/* * Copyright 2012 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * on the rights to use, copy, modify, merge, publish, distribute, sub * license, and/or sell copies of the Software, and to permit persons to whom * the Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. * * Authors: * Tom Stellard * Michel Dänzer * Christian König */ #include "gallivm/lp_bld_const.h" #include "gallivm/lp_bld_gather.h" #include "gallivm/lp_bld_intr.h" #include "gallivm/lp_bld_logic.h" #include "gallivm/lp_bld_arit.h" #include "gallivm/lp_bld_flow.h" #include "gallivm/lp_bld_misc.h" #include "util/u_memory.h" #include "util/u_string.h" #include "tgsi/tgsi_build.h" #include "tgsi/tgsi_util.h" #include "tgsi/tgsi_dump.h" #include "ac_binary.h" #include "ac_llvm_util.h" #include "ac_exp_param.h" #include "si_shader_internal.h" #include "si_pipe.h" #include "sid.h" static const char *scratch_rsrc_dword0_symbol = "SCRATCH_RSRC_DWORD0"; static const char *scratch_rsrc_dword1_symbol = "SCRATCH_RSRC_DWORD1"; struct si_shader_output_values { LLVMValueRef values[4]; unsigned semantic_name; unsigned semantic_index; ubyte vertex_stream[4]; }; static void si_init_shader_ctx(struct si_shader_context *ctx, struct si_screen *sscreen, LLVMTargetMachineRef tm); static void si_llvm_emit_barrier(const struct lp_build_tgsi_action *action, struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data); static void si_dump_shader_key(unsigned processor, const struct si_shader *shader, FILE *f); static unsigned llvm_get_type_size(LLVMTypeRef type); static void si_build_vs_prolog_function(struct si_shader_context *ctx, union si_shader_part_key *key); static void si_build_tcs_epilog_function(struct si_shader_context *ctx, union si_shader_part_key *key); static void si_build_ps_prolog_function(struct si_shader_context *ctx, union si_shader_part_key *key); static void si_build_ps_epilog_function(struct si_shader_context *ctx, union si_shader_part_key *key); /* Ideally pass the sample mask input to the PS epilog as v13, which * is its usual location, so that the shader doesn't have to add v_mov. */ #define PS_EPILOG_SAMPLEMASK_MIN_LOC 13 enum { CONST_ADDR_SPACE = 2, LOCAL_ADDR_SPACE = 3, }; static bool is_merged_shader(struct si_shader *shader) { if (shader->selector->screen->b.chip_class <= VI) return false; return shader->key.as_ls || shader->key.as_es || shader->selector->type == PIPE_SHADER_TESS_CTRL || shader->selector->type == PIPE_SHADER_GEOMETRY; } /** * Returns a unique index for a per-patch semantic name and index. The index * must be less than 32, so that a 32-bit bitmask of used inputs or outputs * can be calculated. */ unsigned si_shader_io_get_unique_index_patch(unsigned semantic_name, unsigned index) { switch (semantic_name) { case TGSI_SEMANTIC_TESSOUTER: return 0; case TGSI_SEMANTIC_TESSINNER: return 1; case TGSI_SEMANTIC_PATCH: assert(index < 30); return 2 + index; default: assert(!"invalid semantic name"); return 0; } } /** * Returns a unique index for a semantic name and index. The index must be * less than 64, so that a 64-bit bitmask of used inputs or outputs can be * calculated. */ unsigned si_shader_io_get_unique_index(unsigned semantic_name, unsigned index) { switch (semantic_name) { case TGSI_SEMANTIC_POSITION: return 0; case TGSI_SEMANTIC_GENERIC: /* Since some shader stages use the the highest used IO index * to determine the size to allocate for inputs/outputs * (in LDS, tess and GS rings). GENERIC should be placed right * after POSITION to make that size as small as possible. */ if (index < SI_MAX_IO_GENERIC) return 1 + index; assert(!"invalid generic index"); return 0; case TGSI_SEMANTIC_PSIZE: return SI_MAX_IO_GENERIC + 1; case TGSI_SEMANTIC_CLIPDIST: assert(index <= 1); return SI_MAX_IO_GENERIC + 2 + index; case TGSI_SEMANTIC_FOG: return SI_MAX_IO_GENERIC + 4; case TGSI_SEMANTIC_LAYER: return SI_MAX_IO_GENERIC + 5; case TGSI_SEMANTIC_VIEWPORT_INDEX: return SI_MAX_IO_GENERIC + 6; case TGSI_SEMANTIC_PRIMID: return SI_MAX_IO_GENERIC + 7; case TGSI_SEMANTIC_COLOR: /* these alias */ case TGSI_SEMANTIC_BCOLOR: assert(index < 2); return SI_MAX_IO_GENERIC + 8 + index; case TGSI_SEMANTIC_TEXCOORD: assert(index < 8); assert(SI_MAX_IO_GENERIC + 10 + index < 64); return SI_MAX_IO_GENERIC + 10 + index; default: assert(!"invalid semantic name"); return 0; } } /** * Get the value of a shader input parameter and extract a bitfield. */ static LLVMValueRef unpack_param(struct si_shader_context *ctx, unsigned param, unsigned rshift, unsigned bitwidth) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef value = LLVMGetParam(ctx->main_fn, param); if (LLVMGetTypeKind(LLVMTypeOf(value)) == LLVMFloatTypeKind) value = bitcast(&ctx->bld_base, TGSI_TYPE_UNSIGNED, value); if (rshift) value = LLVMBuildLShr(gallivm->builder, value, LLVMConstInt(ctx->i32, rshift, 0), ""); if (rshift + bitwidth < 32) { unsigned mask = (1 << bitwidth) - 1; value = LLVMBuildAnd(gallivm->builder, value, LLVMConstInt(ctx->i32, mask, 0), ""); } return value; } static LLVMValueRef get_rel_patch_id(struct si_shader_context *ctx) { switch (ctx->type) { case PIPE_SHADER_TESS_CTRL: return unpack_param(ctx, ctx->param_tcs_rel_ids, 0, 8); case PIPE_SHADER_TESS_EVAL: return LLVMGetParam(ctx->main_fn, ctx->param_tes_rel_patch_id); default: assert(0); return NULL; } } /* Tessellation shaders pass outputs to the next shader using LDS. * * LS outputs = TCS inputs * TCS outputs = TES inputs * * The LDS layout is: * - TCS inputs for patch 0 * - TCS inputs for patch 1 * - TCS inputs for patch 2 = get_tcs_in_current_patch_offset (if RelPatchID==2) * - ... * - TCS outputs for patch 0 = get_tcs_out_patch0_offset * - Per-patch TCS outputs for patch 0 = get_tcs_out_patch0_patch_data_offset * - TCS outputs for patch 1 * - Per-patch TCS outputs for patch 1 * - TCS outputs for patch 2 = get_tcs_out_current_patch_offset (if RelPatchID==2) * - Per-patch TCS outputs for patch 2 = get_tcs_out_current_patch_data_offset (if RelPatchID==2) * - ... * * All three shaders VS(LS), TCS, TES share the same LDS space. */ static LLVMValueRef get_tcs_in_patch_stride(struct si_shader_context *ctx) { return unpack_param(ctx, ctx->param_vs_state_bits, 8, 13); } static LLVMValueRef get_tcs_out_patch_stride(struct si_shader_context *ctx) { return unpack_param(ctx, ctx->param_tcs_out_lds_layout, 0, 13); } static LLVMValueRef get_tcs_out_patch0_offset(struct si_shader_context *ctx) { return lp_build_mul_imm(&ctx->bld_base.uint_bld, unpack_param(ctx, ctx->param_tcs_out_lds_offsets, 0, 16), 4); } static LLVMValueRef get_tcs_out_patch0_patch_data_offset(struct si_shader_context *ctx) { return lp_build_mul_imm(&ctx->bld_base.uint_bld, unpack_param(ctx, ctx->param_tcs_out_lds_offsets, 16, 16), 4); } static LLVMValueRef get_tcs_in_current_patch_offset(struct si_shader_context *ctx) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef patch_stride = get_tcs_in_patch_stride(ctx); LLVMValueRef rel_patch_id = get_rel_patch_id(ctx); return LLVMBuildMul(gallivm->builder, patch_stride, rel_patch_id, ""); } static LLVMValueRef get_tcs_out_current_patch_offset(struct si_shader_context *ctx) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef patch0_offset = get_tcs_out_patch0_offset(ctx); LLVMValueRef patch_stride = get_tcs_out_patch_stride(ctx); LLVMValueRef rel_patch_id = get_rel_patch_id(ctx); return LLVMBuildAdd(gallivm->builder, patch0_offset, LLVMBuildMul(gallivm->builder, patch_stride, rel_patch_id, ""), ""); } static LLVMValueRef get_tcs_out_current_patch_data_offset(struct si_shader_context *ctx) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef patch0_patch_data_offset = get_tcs_out_patch0_patch_data_offset(ctx); LLVMValueRef patch_stride = get_tcs_out_patch_stride(ctx); LLVMValueRef rel_patch_id = get_rel_patch_id(ctx); return LLVMBuildAdd(gallivm->builder, patch0_patch_data_offset, LLVMBuildMul(gallivm->builder, patch_stride, rel_patch_id, ""), ""); } static LLVMValueRef get_instance_index_for_fetch( struct si_shader_context *ctx, unsigned param_start_instance, LLVMValueRef divisor) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef result = LLVMGetParam(ctx->main_fn, ctx->param_instance_id); /* The division must be done before START_INSTANCE is added. */ if (divisor != ctx->i32_1) result = LLVMBuildUDiv(gallivm->builder, result, divisor, ""); return LLVMBuildAdd(gallivm->builder, result, LLVMGetParam(ctx->main_fn, param_start_instance), ""); } /* Bitcast <4 x float> to <2 x double>, extract the component, and convert * to float. */ static LLVMValueRef extract_double_to_float(struct si_shader_context *ctx, LLVMValueRef vec4, unsigned double_index) { LLVMBuilderRef builder = ctx->gallivm.builder; LLVMTypeRef f64 = LLVMDoubleTypeInContext(ctx->gallivm.context); LLVMValueRef dvec2 = LLVMBuildBitCast(builder, vec4, LLVMVectorType(f64, 2), ""); LLVMValueRef index = LLVMConstInt(ctx->i32, double_index, 0); LLVMValueRef value = LLVMBuildExtractElement(builder, dvec2, index, ""); return LLVMBuildFPTrunc(builder, value, ctx->f32, ""); } static void declare_input_vs( struct si_shader_context *ctx, unsigned input_index, const struct tgsi_full_declaration *decl, LLVMValueRef out[4]) { struct gallivm_state *gallivm = &ctx->gallivm; unsigned chan; unsigned fix_fetch; unsigned num_fetches; unsigned fetch_stride; LLVMValueRef t_list_ptr; LLVMValueRef t_offset; LLVMValueRef t_list; LLVMValueRef vertex_index; LLVMValueRef input[3]; /* Load the T list */ t_list_ptr = LLVMGetParam(ctx->main_fn, ctx->param_vertex_buffers); t_offset = LLVMConstInt(ctx->i32, input_index, 0); t_list = ac_build_indexed_load_const(&ctx->ac, t_list_ptr, t_offset); vertex_index = LLVMGetParam(ctx->main_fn, ctx->param_vertex_index0 + input_index); fix_fetch = ctx->shader->key.mono.vs_fix_fetch[input_index]; /* Do multiple loads for special formats. */ switch (fix_fetch) { case SI_FIX_FETCH_RGB_64_FLOAT: num_fetches = 3; /* 3 2-dword loads */ fetch_stride = 8; break; case SI_FIX_FETCH_RGBA_64_FLOAT: num_fetches = 2; /* 2 4-dword loads */ fetch_stride = 16; break; case SI_FIX_FETCH_RGB_8: case SI_FIX_FETCH_RGB_8_INT: num_fetches = 3; fetch_stride = 1; break; case SI_FIX_FETCH_RGB_16: case SI_FIX_FETCH_RGB_16_INT: num_fetches = 3; fetch_stride = 2; break; default: num_fetches = 1; fetch_stride = 0; } for (unsigned i = 0; i < num_fetches; i++) { LLVMValueRef voffset = LLVMConstInt(ctx->i32, fetch_stride * i, 0); input[i] = ac_build_buffer_load_format(&ctx->ac, t_list, vertex_index, voffset, true); } /* Break up the vec4 into individual components */ for (chan = 0; chan < 4; chan++) { LLVMValueRef llvm_chan = LLVMConstInt(ctx->i32, chan, 0); out[chan] = LLVMBuildExtractElement(gallivm->builder, input[0], llvm_chan, ""); } switch (fix_fetch) { case SI_FIX_FETCH_A2_SNORM: case SI_FIX_FETCH_A2_SSCALED: case SI_FIX_FETCH_A2_SINT: { /* The hardware returns an unsigned value; convert it to a * signed one. */ LLVMValueRef tmp = out[3]; LLVMValueRef c30 = LLVMConstInt(ctx->i32, 30, 0); /* First, recover the sign-extended signed integer value. */ if (fix_fetch == SI_FIX_FETCH_A2_SSCALED) tmp = LLVMBuildFPToUI(gallivm->builder, tmp, ctx->i32, ""); else tmp = LLVMBuildBitCast(gallivm->builder, tmp, ctx->i32, ""); /* For the integer-like cases, do a natural sign extension. * * For the SNORM case, the values are 0.0, 0.333, 0.666, 1.0 * and happen to contain 0, 1, 2, 3 as the two LSBs of the * exponent. */ tmp = LLVMBuildShl(gallivm->builder, tmp, fix_fetch == SI_FIX_FETCH_A2_SNORM ? LLVMConstInt(ctx->i32, 7, 0) : c30, ""); tmp = LLVMBuildAShr(gallivm->builder, tmp, c30, ""); /* Convert back to the right type. */ if (fix_fetch == SI_FIX_FETCH_A2_SNORM) { LLVMValueRef clamp; LLVMValueRef neg_one = LLVMConstReal(ctx->f32, -1.0); tmp = LLVMBuildSIToFP(gallivm->builder, tmp, ctx->f32, ""); clamp = LLVMBuildFCmp(gallivm->builder, LLVMRealULT, tmp, neg_one, ""); tmp = LLVMBuildSelect(gallivm->builder, clamp, neg_one, tmp, ""); } else if (fix_fetch == SI_FIX_FETCH_A2_SSCALED) { tmp = LLVMBuildSIToFP(gallivm->builder, tmp, ctx->f32, ""); } out[3] = tmp; break; } case SI_FIX_FETCH_RGBA_32_UNORM: case SI_FIX_FETCH_RGBX_32_UNORM: for (chan = 0; chan < 4; chan++) { out[chan] = LLVMBuildBitCast(gallivm->builder, out[chan], ctx->i32, ""); out[chan] = LLVMBuildUIToFP(gallivm->builder, out[chan], ctx->f32, ""); out[chan] = LLVMBuildFMul(gallivm->builder, out[chan], LLVMConstReal(ctx->f32, 1.0 / UINT_MAX), ""); } /* RGBX UINT returns 1 in alpha, which would be rounded to 0 by normalizing. */ if (fix_fetch == SI_FIX_FETCH_RGBX_32_UNORM) out[3] = LLVMConstReal(ctx->f32, 1); break; case SI_FIX_FETCH_RGBA_32_SNORM: case SI_FIX_FETCH_RGBX_32_SNORM: case SI_FIX_FETCH_RGBA_32_FIXED: case SI_FIX_FETCH_RGBX_32_FIXED: { double scale; if (fix_fetch >= SI_FIX_FETCH_RGBA_32_FIXED) scale = 1.0 / 0x10000; else scale = 1.0 / INT_MAX; for (chan = 0; chan < 4; chan++) { out[chan] = LLVMBuildBitCast(gallivm->builder, out[chan], ctx->i32, ""); out[chan] = LLVMBuildSIToFP(gallivm->builder, out[chan], ctx->f32, ""); out[chan] = LLVMBuildFMul(gallivm->builder, out[chan], LLVMConstReal(ctx->f32, scale), ""); } /* RGBX SINT returns 1 in alpha, which would be rounded to 0 by normalizing. */ if (fix_fetch == SI_FIX_FETCH_RGBX_32_SNORM || fix_fetch == SI_FIX_FETCH_RGBX_32_FIXED) out[3] = LLVMConstReal(ctx->f32, 1); break; } case SI_FIX_FETCH_RGBA_32_USCALED: for (chan = 0; chan < 4; chan++) { out[chan] = LLVMBuildBitCast(gallivm->builder, out[chan], ctx->i32, ""); out[chan] = LLVMBuildUIToFP(gallivm->builder, out[chan], ctx->f32, ""); } break; case SI_FIX_FETCH_RGBA_32_SSCALED: for (chan = 0; chan < 4; chan++) { out[chan] = LLVMBuildBitCast(gallivm->builder, out[chan], ctx->i32, ""); out[chan] = LLVMBuildSIToFP(gallivm->builder, out[chan], ctx->f32, ""); } break; case SI_FIX_FETCH_RG_64_FLOAT: for (chan = 0; chan < 2; chan++) out[chan] = extract_double_to_float(ctx, input[0], chan); out[2] = LLVMConstReal(ctx->f32, 0); out[3] = LLVMConstReal(ctx->f32, 1); break; case SI_FIX_FETCH_RGB_64_FLOAT: for (chan = 0; chan < 3; chan++) out[chan] = extract_double_to_float(ctx, input[chan], 0); out[3] = LLVMConstReal(ctx->f32, 1); break; case SI_FIX_FETCH_RGBA_64_FLOAT: for (chan = 0; chan < 4; chan++) { out[chan] = extract_double_to_float(ctx, input[chan / 2], chan % 2); } break; case SI_FIX_FETCH_RGB_8: case SI_FIX_FETCH_RGB_8_INT: case SI_FIX_FETCH_RGB_16: case SI_FIX_FETCH_RGB_16_INT: for (chan = 0; chan < 3; chan++) { out[chan] = LLVMBuildExtractElement(gallivm->builder, input[chan], ctx->i32_0, ""); } if (fix_fetch == SI_FIX_FETCH_RGB_8 || fix_fetch == SI_FIX_FETCH_RGB_16) { out[3] = LLVMConstReal(ctx->f32, 1); } else { out[3] = LLVMBuildBitCast(gallivm->builder, ctx->i32_1, ctx->f32, ""); } break; } } static LLVMValueRef get_primitive_id(struct lp_build_tgsi_context *bld_base, unsigned swizzle) { struct si_shader_context *ctx = si_shader_context(bld_base); if (swizzle > 0) return ctx->i32_0; switch (ctx->type) { case PIPE_SHADER_VERTEX: return LLVMGetParam(ctx->main_fn, ctx->param_vs_prim_id); case PIPE_SHADER_TESS_CTRL: return LLVMGetParam(ctx->main_fn, ctx->param_tcs_patch_id); case PIPE_SHADER_TESS_EVAL: return LLVMGetParam(ctx->main_fn, ctx->param_tes_patch_id); case PIPE_SHADER_GEOMETRY: return LLVMGetParam(ctx->main_fn, ctx->param_gs_prim_id); default: assert(0); return ctx->i32_0; } } /** * Return the value of tgsi_ind_register for indexing. * This is the indirect index with the constant offset added to it. */ static LLVMValueRef get_indirect_index(struct si_shader_context *ctx, const struct tgsi_ind_register *ind, int rel_index) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef result; result = ctx->addrs[ind->Index][ind->Swizzle]; result = LLVMBuildLoad(gallivm->builder, result, ""); result = LLVMBuildAdd(gallivm->builder, result, LLVMConstInt(ctx->i32, rel_index, 0), ""); return result; } /** * Like get_indirect_index, but restricts the return value to a (possibly * undefined) value inside [0..num). */ LLVMValueRef si_get_bounded_indirect_index(struct si_shader_context *ctx, const struct tgsi_ind_register *ind, int rel_index, unsigned num) { LLVMValueRef result = get_indirect_index(ctx, ind, rel_index); return si_llvm_bound_index(ctx, result, num); } /** * Calculate a dword address given an input or output register and a stride. */ static LLVMValueRef get_dw_address(struct si_shader_context *ctx, const struct tgsi_full_dst_register *dst, const struct tgsi_full_src_register *src, LLVMValueRef vertex_dw_stride, LLVMValueRef base_addr) { struct gallivm_state *gallivm = &ctx->gallivm; struct tgsi_shader_info *info = &ctx->shader->selector->info; ubyte *name, *index, *array_first; int first, param; struct tgsi_full_dst_register reg; /* Set the register description. The address computation is the same * for sources and destinations. */ if (src) { reg.Register.File = src->Register.File; reg.Register.Index = src->Register.Index; reg.Register.Indirect = src->Register.Indirect; reg.Register.Dimension = src->Register.Dimension; reg.Indirect = src->Indirect; reg.Dimension = src->Dimension; reg.DimIndirect = src->DimIndirect; } else reg = *dst; /* If the register is 2-dimensional (e.g. an array of vertices * in a primitive), calculate the base address of the vertex. */ if (reg.Register.Dimension) { LLVMValueRef index; if (reg.Dimension.Indirect) index = get_indirect_index(ctx, ®.DimIndirect, reg.Dimension.Index); else index = LLVMConstInt(ctx->i32, reg.Dimension.Index, 0); base_addr = LLVMBuildAdd(gallivm->builder, base_addr, LLVMBuildMul(gallivm->builder, index, vertex_dw_stride, ""), ""); } /* Get information about the register. */ if (reg.Register.File == TGSI_FILE_INPUT) { name = info->input_semantic_name; index = info->input_semantic_index; array_first = info->input_array_first; } else if (reg.Register.File == TGSI_FILE_OUTPUT) { name = info->output_semantic_name; index = info->output_semantic_index; array_first = info->output_array_first; } else { assert(0); return NULL; } if (reg.Register.Indirect) { /* Add the relative address of the element. */ LLVMValueRef ind_index; if (reg.Indirect.ArrayID) first = array_first[reg.Indirect.ArrayID]; else first = reg.Register.Index; ind_index = get_indirect_index(ctx, ®.Indirect, reg.Register.Index - first); base_addr = LLVMBuildAdd(gallivm->builder, base_addr, LLVMBuildMul(gallivm->builder, ind_index, LLVMConstInt(ctx->i32, 4, 0), ""), ""); param = reg.Register.Dimension ? si_shader_io_get_unique_index(name[first], index[first]) : si_shader_io_get_unique_index_patch(name[first], index[first]); } else { param = reg.Register.Dimension ? si_shader_io_get_unique_index(name[reg.Register.Index], index[reg.Register.Index]) : si_shader_io_get_unique_index_patch(name[reg.Register.Index], index[reg.Register.Index]); } /* Add the base address of the element. */ return LLVMBuildAdd(gallivm->builder, base_addr, LLVMConstInt(ctx->i32, param * 4, 0), ""); } /* The offchip buffer layout for TCS->TES is * * - attribute 0 of patch 0 vertex 0 * - attribute 0 of patch 0 vertex 1 * - attribute 0 of patch 0 vertex 2 * ... * - attribute 0 of patch 1 vertex 0 * - attribute 0 of patch 1 vertex 1 * ... * - attribute 1 of patch 0 vertex 0 * - attribute 1 of patch 0 vertex 1 * ... * - per patch attribute 0 of patch 0 * - per patch attribute 0 of patch 1 * ... * * Note that every attribute has 4 components. */ static LLVMValueRef get_tcs_tes_buffer_address(struct si_shader_context *ctx, LLVMValueRef rel_patch_id, LLVMValueRef vertex_index, LLVMValueRef param_index) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef base_addr, vertices_per_patch, num_patches, total_vertices; LLVMValueRef param_stride, constant16; vertices_per_patch = unpack_param(ctx, ctx->param_tcs_offchip_layout, 6, 6); num_patches = unpack_param(ctx, ctx->param_tcs_offchip_layout, 0, 6); total_vertices = LLVMBuildMul(gallivm->builder, vertices_per_patch, num_patches, ""); constant16 = LLVMConstInt(ctx->i32, 16, 0); if (vertex_index) { base_addr = LLVMBuildMul(gallivm->builder, rel_patch_id, vertices_per_patch, ""); base_addr = LLVMBuildAdd(gallivm->builder, base_addr, vertex_index, ""); param_stride = total_vertices; } else { base_addr = rel_patch_id; param_stride = num_patches; } base_addr = LLVMBuildAdd(gallivm->builder, base_addr, LLVMBuildMul(gallivm->builder, param_index, param_stride, ""), ""); base_addr = LLVMBuildMul(gallivm->builder, base_addr, constant16, ""); if (!vertex_index) { LLVMValueRef patch_data_offset = unpack_param(ctx, ctx->param_tcs_offchip_layout, 12, 20); base_addr = LLVMBuildAdd(gallivm->builder, base_addr, patch_data_offset, ""); } return base_addr; } static LLVMValueRef get_tcs_tes_buffer_address_from_reg( struct si_shader_context *ctx, const struct tgsi_full_dst_register *dst, const struct tgsi_full_src_register *src) { struct gallivm_state *gallivm = &ctx->gallivm; struct tgsi_shader_info *info = &ctx->shader->selector->info; ubyte *name, *index, *array_first; struct tgsi_full_src_register reg; LLVMValueRef vertex_index = NULL; LLVMValueRef param_index = NULL; unsigned param_index_base, param_base; reg = src ? *src : tgsi_full_src_register_from_dst(dst); if (reg.Register.Dimension) { if (reg.Dimension.Indirect) vertex_index = get_indirect_index(ctx, ®.DimIndirect, reg.Dimension.Index); else vertex_index = LLVMConstInt(ctx->i32, reg.Dimension.Index, 0); } /* Get information about the register. */ if (reg.Register.File == TGSI_FILE_INPUT) { name = info->input_semantic_name; index = info->input_semantic_index; array_first = info->input_array_first; } else if (reg.Register.File == TGSI_FILE_OUTPUT) { name = info->output_semantic_name; index = info->output_semantic_index; array_first = info->output_array_first; } else { assert(0); return NULL; } if (reg.Register.Indirect) { if (reg.Indirect.ArrayID) param_base = array_first[reg.Indirect.ArrayID]; else param_base = reg.Register.Index; param_index = get_indirect_index(ctx, ®.Indirect, reg.Register.Index - param_base); } else { param_base = reg.Register.Index; param_index = ctx->i32_0; } param_index_base = reg.Register.Dimension ? si_shader_io_get_unique_index(name[param_base], index[param_base]) : si_shader_io_get_unique_index_patch(name[param_base], index[param_base]); param_index = LLVMBuildAdd(gallivm->builder, param_index, LLVMConstInt(ctx->i32, param_index_base, 0), ""); return get_tcs_tes_buffer_address(ctx, get_rel_patch_id(ctx), vertex_index, param_index); } static LLVMValueRef buffer_load(struct lp_build_tgsi_context *bld_base, enum tgsi_opcode_type type, unsigned swizzle, LLVMValueRef buffer, LLVMValueRef offset, LLVMValueRef base, bool can_speculate) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef value, value2; LLVMTypeRef llvm_type = tgsi2llvmtype(bld_base, type); LLVMTypeRef vec_type = LLVMVectorType(llvm_type, 4); if (swizzle == ~0) { value = ac_build_buffer_load(&ctx->ac, buffer, 4, NULL, base, offset, 0, 1, 0, can_speculate, false); return LLVMBuildBitCast(gallivm->builder, value, vec_type, ""); } if (!tgsi_type_is_64bit(type)) { value = ac_build_buffer_load(&ctx->ac, buffer, 4, NULL, base, offset, 0, 1, 0, can_speculate, false); value = LLVMBuildBitCast(gallivm->builder, value, vec_type, ""); return LLVMBuildExtractElement(gallivm->builder, value, LLVMConstInt(ctx->i32, swizzle, 0), ""); } value = ac_build_buffer_load(&ctx->ac, buffer, 1, NULL, base, offset, swizzle * 4, 1, 0, can_speculate, false); value2 = ac_build_buffer_load(&ctx->ac, buffer, 1, NULL, base, offset, swizzle * 4 + 4, 1, 0, can_speculate, false); return si_llvm_emit_fetch_64bit(bld_base, type, value, value2); } /** * Load from LDS. * * \param type output value type * \param swizzle offset (typically 0..3); it can be ~0, which loads a vec4 * \param dw_addr address in dwords */ static LLVMValueRef lds_load(struct lp_build_tgsi_context *bld_base, enum tgsi_opcode_type type, unsigned swizzle, LLVMValueRef dw_addr) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef value; if (swizzle == ~0) { LLVMValueRef values[TGSI_NUM_CHANNELS]; for (unsigned chan = 0; chan < TGSI_NUM_CHANNELS; chan++) values[chan] = lds_load(bld_base, type, chan, dw_addr); return lp_build_gather_values(gallivm, values, TGSI_NUM_CHANNELS); } dw_addr = lp_build_add(&bld_base->uint_bld, dw_addr, LLVMConstInt(ctx->i32, swizzle, 0)); value = ac_build_indexed_load(&ctx->ac, ctx->lds, dw_addr, false); if (tgsi_type_is_64bit(type)) { LLVMValueRef value2; dw_addr = lp_build_add(&bld_base->uint_bld, dw_addr, ctx->i32_1); value2 = ac_build_indexed_load(&ctx->ac, ctx->lds, dw_addr, false); return si_llvm_emit_fetch_64bit(bld_base, type, value, value2); } return LLVMBuildBitCast(gallivm->builder, value, tgsi2llvmtype(bld_base, type), ""); } /** * Store to LDS. * * \param swizzle offset (typically 0..3) * \param dw_addr address in dwords * \param value value to store */ static void lds_store(struct lp_build_tgsi_context *bld_base, unsigned dw_offset_imm, LLVMValueRef dw_addr, LLVMValueRef value) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; dw_addr = lp_build_add(&bld_base->uint_bld, dw_addr, LLVMConstInt(ctx->i32, dw_offset_imm, 0)); value = LLVMBuildBitCast(gallivm->builder, value, ctx->i32, ""); ac_build_indexed_store(&ctx->ac, ctx->lds, dw_addr, value); } static LLVMValueRef desc_from_addr_base64k(struct si_shader_context *ctx, unsigned param) { LLVMBuilderRef builder = ctx->gallivm.builder; LLVMValueRef addr = LLVMGetParam(ctx->main_fn, param); addr = LLVMBuildZExt(builder, addr, ctx->i64, ""); addr = LLVMBuildShl(builder, addr, LLVMConstInt(ctx->i64, 16, 0), ""); uint64_t desc2 = 0xffffffff; uint64_t desc3 = S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X) | S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y) | S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z) | S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W) | S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT) | S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32); LLVMValueRef hi = LLVMConstInt(ctx->i64, desc2 | (desc3 << 32), 0); LLVMValueRef desc = LLVMGetUndef(LLVMVectorType(ctx->i64, 2)); desc = LLVMBuildInsertElement(builder, desc, addr, ctx->i32_0, ""); desc = LLVMBuildInsertElement(builder, desc, hi, ctx->i32_1, ""); return LLVMBuildBitCast(builder, desc, ctx->v4i32, ""); } static LLVMValueRef fetch_input_tcs( struct lp_build_tgsi_context *bld_base, const struct tgsi_full_src_register *reg, enum tgsi_opcode_type type, unsigned swizzle) { struct si_shader_context *ctx = si_shader_context(bld_base); LLVMValueRef dw_addr, stride; stride = unpack_param(ctx, ctx->param_vs_state_bits, 24, 8); dw_addr = get_tcs_in_current_patch_offset(ctx); dw_addr = get_dw_address(ctx, NULL, reg, stride, dw_addr); return lds_load(bld_base, type, swizzle, dw_addr); } static LLVMValueRef fetch_output_tcs( struct lp_build_tgsi_context *bld_base, const struct tgsi_full_src_register *reg, enum tgsi_opcode_type type, unsigned swizzle) { struct si_shader_context *ctx = si_shader_context(bld_base); LLVMValueRef dw_addr, stride; if (reg->Register.Dimension) { stride = unpack_param(ctx, ctx->param_tcs_out_lds_layout, 13, 8); dw_addr = get_tcs_out_current_patch_offset(ctx); dw_addr = get_dw_address(ctx, NULL, reg, stride, dw_addr); } else { dw_addr = get_tcs_out_current_patch_data_offset(ctx); dw_addr = get_dw_address(ctx, NULL, reg, NULL, dw_addr); } return lds_load(bld_base, type, swizzle, dw_addr); } static LLVMValueRef fetch_input_tes( struct lp_build_tgsi_context *bld_base, const struct tgsi_full_src_register *reg, enum tgsi_opcode_type type, unsigned swizzle) { struct si_shader_context *ctx = si_shader_context(bld_base); LLVMValueRef buffer, base, addr; buffer = desc_from_addr_base64k(ctx, ctx->param_tcs_offchip_addr_base64k); base = LLVMGetParam(ctx->main_fn, ctx->param_tcs_offchip_offset); addr = get_tcs_tes_buffer_address_from_reg(ctx, NULL, reg); return buffer_load(bld_base, type, swizzle, buffer, base, addr, true); } static void store_output_tcs(struct lp_build_tgsi_context *bld_base, const struct tgsi_full_instruction *inst, const struct tgsi_opcode_info *info, LLVMValueRef dst[4]) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; const struct tgsi_full_dst_register *reg = &inst->Dst[0]; const struct tgsi_shader_info *sh_info = &ctx->shader->selector->info; unsigned chan_index; LLVMValueRef dw_addr, stride; LLVMValueRef buffer, base, buf_addr; LLVMValueRef values[4]; bool skip_lds_store; bool is_tess_factor = false; /* Only handle per-patch and per-vertex outputs here. * Vectors will be lowered to scalars and this function will be called again. */ if (reg->Register.File != TGSI_FILE_OUTPUT || (dst[0] && LLVMGetTypeKind(LLVMTypeOf(dst[0])) == LLVMVectorTypeKind)) { si_llvm_emit_store(bld_base, inst, info, dst); return; } if (reg->Register.Dimension) { stride = unpack_param(ctx, ctx->param_tcs_out_lds_layout, 13, 8); dw_addr = get_tcs_out_current_patch_offset(ctx); dw_addr = get_dw_address(ctx, reg, NULL, stride, dw_addr); skip_lds_store = !sh_info->reads_pervertex_outputs; } else { dw_addr = get_tcs_out_current_patch_data_offset(ctx); dw_addr = get_dw_address(ctx, reg, NULL, NULL, dw_addr); skip_lds_store = !sh_info->reads_perpatch_outputs; if (!reg->Register.Indirect) { int name = sh_info->output_semantic_name[reg->Register.Index]; /* Always write tess factors into LDS for the TCS epilog. */ if (name == TGSI_SEMANTIC_TESSINNER || name == TGSI_SEMANTIC_TESSOUTER) { skip_lds_store = false; is_tess_factor = true; } } } buffer = desc_from_addr_base64k(ctx, ctx->param_tcs_offchip_addr_base64k); base = LLVMGetParam(ctx->main_fn, ctx->param_tcs_offchip_offset); buf_addr = get_tcs_tes_buffer_address_from_reg(ctx, reg, NULL); TGSI_FOR_EACH_DST0_ENABLED_CHANNEL(inst, chan_index) { LLVMValueRef value = dst[chan_index]; if (inst->Instruction.Saturate) value = ac_build_clamp(&ctx->ac, value); /* Skip LDS stores if there is no LDS read of this output. */ if (!skip_lds_store) lds_store(bld_base, chan_index, dw_addr, value); value = LLVMBuildBitCast(gallivm->builder, value, ctx->i32, ""); values[chan_index] = value; if (inst->Dst[0].Register.WriteMask != 0xF && !is_tess_factor) { ac_build_buffer_store_dword(&ctx->ac, buffer, value, 1, buf_addr, base, 4 * chan_index, 1, 0, true, false); } } if (inst->Dst[0].Register.WriteMask == 0xF && !is_tess_factor) { LLVMValueRef value = lp_build_gather_values(gallivm, values, 4); ac_build_buffer_store_dword(&ctx->ac, buffer, value, 4, buf_addr, base, 0, 1, 0, true, false); } } static LLVMValueRef fetch_input_gs( struct lp_build_tgsi_context *bld_base, const struct tgsi_full_src_register *reg, enum tgsi_opcode_type type, unsigned swizzle) { struct si_shader_context *ctx = si_shader_context(bld_base); struct si_shader *shader = ctx->shader; struct lp_build_context *uint = &ctx->bld_base.uint_bld; struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef vtx_offset, soffset; struct tgsi_shader_info *info = &shader->selector->info; unsigned semantic_name = info->input_semantic_name[reg->Register.Index]; unsigned semantic_index = info->input_semantic_index[reg->Register.Index]; unsigned param; LLVMValueRef value; if (swizzle != ~0 && semantic_name == TGSI_SEMANTIC_PRIMID) return get_primitive_id(bld_base, swizzle); if (!reg->Register.Dimension) return NULL; param = si_shader_io_get_unique_index(semantic_name, semantic_index); /* GFX9 has the ESGS ring in LDS. */ if (ctx->screen->b.chip_class >= GFX9) { unsigned index = reg->Dimension.Index; switch (index / 2) { case 0: vtx_offset = unpack_param(ctx, ctx->param_gs_vtx01_offset, index % 2 ? 16 : 0, 16); break; case 1: vtx_offset = unpack_param(ctx, ctx->param_gs_vtx23_offset, index % 2 ? 16 : 0, 16); break; case 2: vtx_offset = unpack_param(ctx, ctx->param_gs_vtx45_offset, index % 2 ? 16 : 0, 16); break; default: assert(0); return NULL; } vtx_offset = LLVMBuildAdd(gallivm->builder, vtx_offset, LLVMConstInt(ctx->i32, param * 4, 0), ""); return lds_load(bld_base, type, swizzle, vtx_offset); } /* GFX6: input load from the ESGS ring in memory. */ if (swizzle == ~0) { LLVMValueRef values[TGSI_NUM_CHANNELS]; unsigned chan; for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) { values[chan] = fetch_input_gs(bld_base, reg, type, chan); } return lp_build_gather_values(gallivm, values, TGSI_NUM_CHANNELS); } /* Get the vertex offset parameter on GFX6. */ unsigned vtx_offset_param = reg->Dimension.Index; if (vtx_offset_param < 2) { vtx_offset_param += ctx->param_gs_vtx0_offset; } else { assert(vtx_offset_param < 6); vtx_offset_param += ctx->param_gs_vtx2_offset - 2; } vtx_offset = lp_build_mul_imm(uint, LLVMGetParam(ctx->main_fn, vtx_offset_param), 4); soffset = LLVMConstInt(ctx->i32, (param * 4 + swizzle) * 256, 0); value = ac_build_buffer_load(&ctx->ac, ctx->esgs_ring, 1, ctx->i32_0, vtx_offset, soffset, 0, 1, 0, true, false); if (tgsi_type_is_64bit(type)) { LLVMValueRef value2; soffset = LLVMConstInt(ctx->i32, (param * 4 + swizzle + 1) * 256, 0); value2 = ac_build_buffer_load(&ctx->ac, ctx->esgs_ring, 1, ctx->i32_0, vtx_offset, soffset, 0, 1, 0, true, false); return si_llvm_emit_fetch_64bit(bld_base, type, value, value2); } return LLVMBuildBitCast(gallivm->builder, value, tgsi2llvmtype(bld_base, type), ""); } static int lookup_interp_param_index(unsigned interpolate, unsigned location) { switch (interpolate) { case TGSI_INTERPOLATE_CONSTANT: return 0; case TGSI_INTERPOLATE_LINEAR: if (location == TGSI_INTERPOLATE_LOC_SAMPLE) return SI_PARAM_LINEAR_SAMPLE; else if (location == TGSI_INTERPOLATE_LOC_CENTROID) return SI_PARAM_LINEAR_CENTROID; else return SI_PARAM_LINEAR_CENTER; break; case TGSI_INTERPOLATE_COLOR: case TGSI_INTERPOLATE_PERSPECTIVE: if (location == TGSI_INTERPOLATE_LOC_SAMPLE) return SI_PARAM_PERSP_SAMPLE; else if (location == TGSI_INTERPOLATE_LOC_CENTROID) return SI_PARAM_PERSP_CENTROID; else return SI_PARAM_PERSP_CENTER; break; default: fprintf(stderr, "Warning: Unhandled interpolation mode.\n"); return -1; } } /** * Interpolate a fragment shader input. * * @param ctx context * @param input_index index of the input in hardware * @param semantic_name TGSI_SEMANTIC_* * @param semantic_index semantic index * @param num_interp_inputs number of all interpolated inputs (= BCOLOR offset) * @param colors_read_mask color components read (4 bits for each color, 8 bits in total) * @param interp_param interpolation weights (i,j) * @param prim_mask SI_PARAM_PRIM_MASK * @param face SI_PARAM_FRONT_FACE * @param result the return value (4 components) */ static void interp_fs_input(struct si_shader_context *ctx, unsigned input_index, unsigned semantic_name, unsigned semantic_index, unsigned num_interp_inputs, unsigned colors_read_mask, LLVMValueRef interp_param, LLVMValueRef prim_mask, LLVMValueRef face, LLVMValueRef result[4]) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef attr_number; LLVMValueRef i, j; unsigned chan; /* fs.constant returns the param from the middle vertex, so it's not * really useful for flat shading. It's meant to be used for custom * interpolation (but the intrinsic can't fetch from the other two * vertices). * * Luckily, it doesn't matter, because we rely on the FLAT_SHADE state * to do the right thing. The only reason we use fs.constant is that * fs.interp cannot be used on integers, because they can be equal * to NaN. * * When interp is false we will use fs.constant or for newer llvm, * amdgcn.interp.mov. */ bool interp = interp_param != NULL; attr_number = LLVMConstInt(ctx->i32, input_index, 0); if (interp) { interp_param = LLVMBuildBitCast(gallivm->builder, interp_param, LLVMVectorType(ctx->f32, 2), ""); i = LLVMBuildExtractElement(gallivm->builder, interp_param, ctx->i32_0, ""); j = LLVMBuildExtractElement(gallivm->builder, interp_param, ctx->i32_1, ""); } if (semantic_name == TGSI_SEMANTIC_COLOR && ctx->shader->key.part.ps.prolog.color_two_side) { LLVMValueRef is_face_positive; LLVMValueRef back_attr_number; /* If BCOLOR0 is used, BCOLOR1 is at offset "num_inputs + 1", * otherwise it's at offset "num_inputs". */ unsigned back_attr_offset = num_interp_inputs; if (semantic_index == 1 && colors_read_mask & 0xf) back_attr_offset += 1; back_attr_number = LLVMConstInt(ctx->i32, back_attr_offset, 0); is_face_positive = LLVMBuildICmp(gallivm->builder, LLVMIntNE, face, ctx->i32_0, ""); for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) { LLVMValueRef llvm_chan = LLVMConstInt(ctx->i32, chan, 0); LLVMValueRef front, back; if (interp) { front = ac_build_fs_interp(&ctx->ac, llvm_chan, attr_number, prim_mask, i, j); back = ac_build_fs_interp(&ctx->ac, llvm_chan, back_attr_number, prim_mask, i, j); } else { front = ac_build_fs_interp_mov(&ctx->ac, LLVMConstInt(ctx->i32, 2, 0), /* P0 */ llvm_chan, attr_number, prim_mask); back = ac_build_fs_interp_mov(&ctx->ac, LLVMConstInt(ctx->i32, 2, 0), /* P0 */ llvm_chan, back_attr_number, prim_mask); } result[chan] = LLVMBuildSelect(gallivm->builder, is_face_positive, front, back, ""); } } else if (semantic_name == TGSI_SEMANTIC_FOG) { if (interp) { result[0] = ac_build_fs_interp(&ctx->ac, ctx->i32_0, attr_number, prim_mask, i, j); } else { result[0] = ac_build_fs_interp_mov(&ctx->ac, ctx->i32_0, LLVMConstInt(ctx->i32, 2, 0), /* P0 */ attr_number, prim_mask); } result[1] = result[2] = LLVMConstReal(ctx->f32, 0.0f); result[3] = LLVMConstReal(ctx->f32, 1.0f); } else { for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) { LLVMValueRef llvm_chan = LLVMConstInt(ctx->i32, chan, 0); if (interp) { result[chan] = ac_build_fs_interp(&ctx->ac, llvm_chan, attr_number, prim_mask, i, j); } else { result[chan] = ac_build_fs_interp_mov(&ctx->ac, LLVMConstInt(ctx->i32, 2, 0), /* P0 */ llvm_chan, attr_number, prim_mask); } } } } static void declare_input_fs( struct si_shader_context *ctx, unsigned input_index, const struct tgsi_full_declaration *decl, LLVMValueRef out[4]) { struct lp_build_context *base = &ctx->bld_base.base; struct si_shader *shader = ctx->shader; LLVMValueRef main_fn = ctx->main_fn; LLVMValueRef interp_param = NULL; int interp_param_idx; /* Get colors from input VGPRs (set by the prolog). */ if (decl->Semantic.Name == TGSI_SEMANTIC_COLOR) { unsigned i = decl->Semantic.Index; unsigned colors_read = shader->selector->info.colors_read; unsigned mask = colors_read >> (i * 4); unsigned offset = SI_PARAM_POS_FIXED_PT + 1 + (i ? util_bitcount(colors_read & 0xf) : 0); out[0] = mask & 0x1 ? LLVMGetParam(main_fn, offset++) : base->undef; out[1] = mask & 0x2 ? LLVMGetParam(main_fn, offset++) : base->undef; out[2] = mask & 0x4 ? LLVMGetParam(main_fn, offset++) : base->undef; out[3] = mask & 0x8 ? LLVMGetParam(main_fn, offset++) : base->undef; return; } interp_param_idx = lookup_interp_param_index(decl->Interp.Interpolate, decl->Interp.Location); if (interp_param_idx == -1) return; else if (interp_param_idx) { interp_param = LLVMGetParam(ctx->main_fn, interp_param_idx); } interp_fs_input(ctx, input_index, decl->Semantic.Name, decl->Semantic.Index, shader->selector->info.num_inputs, shader->selector->info.colors_read, interp_param, LLVMGetParam(main_fn, SI_PARAM_PRIM_MASK), LLVMGetParam(main_fn, SI_PARAM_FRONT_FACE), &out[0]); } static LLVMValueRef get_sample_id(struct si_shader_context *ctx) { return unpack_param(ctx, SI_PARAM_ANCILLARY, 8, 4); } /** * Load a dword from a constant buffer. */ static LLVMValueRef buffer_load_const(struct si_shader_context *ctx, LLVMValueRef resource, LLVMValueRef offset) { return ac_build_buffer_load(&ctx->ac, resource, 1, NULL, offset, NULL, 0, 0, 0, true, true); } static LLVMValueRef load_sample_position(struct si_shader_context *ctx, LLVMValueRef sample_id) { struct lp_build_context *uint_bld = &ctx->bld_base.uint_bld; struct gallivm_state *gallivm = &ctx->gallivm; LLVMBuilderRef builder = gallivm->builder; LLVMValueRef desc = LLVMGetParam(ctx->main_fn, ctx->param_rw_buffers); LLVMValueRef buf_index = LLVMConstInt(ctx->i32, SI_PS_CONST_SAMPLE_POSITIONS, 0); LLVMValueRef resource = ac_build_indexed_load_const(&ctx->ac, desc, buf_index); /* offset = sample_id * 8 (8 = 2 floats containing samplepos.xy) */ LLVMValueRef offset0 = lp_build_mul_imm(uint_bld, sample_id, 8); LLVMValueRef offset1 = LLVMBuildAdd(builder, offset0, LLVMConstInt(ctx->i32, 4, 0), ""); LLVMValueRef pos[4] = { buffer_load_const(ctx, resource, offset0), buffer_load_const(ctx, resource, offset1), LLVMConstReal(ctx->f32, 0), LLVMConstReal(ctx->f32, 0) }; return lp_build_gather_values(gallivm, pos, 4); } static void declare_system_value(struct si_shader_context *ctx, unsigned index, const struct tgsi_full_declaration *decl) { struct lp_build_context *bld = &ctx->bld_base.base; struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef value = 0; assert(index < RADEON_LLVM_MAX_SYSTEM_VALUES); switch (decl->Semantic.Name) { case TGSI_SEMANTIC_INSTANCEID: value = LLVMGetParam(ctx->main_fn, ctx->param_instance_id); break; case TGSI_SEMANTIC_VERTEXID: value = LLVMBuildAdd(gallivm->builder, LLVMGetParam(ctx->main_fn, ctx->param_vertex_id), LLVMGetParam(ctx->main_fn, ctx->param_base_vertex), ""); break; case TGSI_SEMANTIC_VERTEXID_NOBASE: /* Unused. Clarify the meaning in indexed vs. non-indexed * draws if this is ever used again. */ assert(false); break; case TGSI_SEMANTIC_BASEVERTEX: { /* For non-indexed draws, the base vertex set by the driver * (for direct draws) or the CP (for indirect draws) is the * first vertex ID, but GLSL expects 0 to be returned. */ LLVMValueRef vs_state = LLVMGetParam(ctx->main_fn, ctx->param_vs_state_bits); LLVMValueRef indexed; indexed = LLVMBuildLShr(gallivm->builder, vs_state, ctx->i32_1, ""); indexed = LLVMBuildTrunc(gallivm->builder, indexed, ctx->i1, ""); value = LLVMBuildSelect(gallivm->builder, indexed, LLVMGetParam(ctx->main_fn, ctx->param_base_vertex), ctx->i32_0, ""); break; } case TGSI_SEMANTIC_BASEINSTANCE: value = LLVMGetParam(ctx->main_fn, ctx->param_start_instance); break; case TGSI_SEMANTIC_DRAWID: value = LLVMGetParam(ctx->main_fn, ctx->param_draw_id); break; case TGSI_SEMANTIC_INVOCATIONID: if (ctx->type == PIPE_SHADER_TESS_CTRL) value = unpack_param(ctx, ctx->param_tcs_rel_ids, 8, 5); else if (ctx->type == PIPE_SHADER_GEOMETRY) value = LLVMGetParam(ctx->main_fn, ctx->param_gs_instance_id); else assert(!"INVOCATIONID not implemented"); break; case TGSI_SEMANTIC_POSITION: { LLVMValueRef pos[4] = { LLVMGetParam(ctx->main_fn, SI_PARAM_POS_X_FLOAT), LLVMGetParam(ctx->main_fn, SI_PARAM_POS_Y_FLOAT), LLVMGetParam(ctx->main_fn, SI_PARAM_POS_Z_FLOAT), lp_build_emit_llvm_unary(&ctx->bld_base, TGSI_OPCODE_RCP, LLVMGetParam(ctx->main_fn, SI_PARAM_POS_W_FLOAT)), }; value = lp_build_gather_values(gallivm, pos, 4); break; } case TGSI_SEMANTIC_FACE: value = LLVMGetParam(ctx->main_fn, SI_PARAM_FRONT_FACE); break; case TGSI_SEMANTIC_SAMPLEID: value = get_sample_id(ctx); break; case TGSI_SEMANTIC_SAMPLEPOS: { LLVMValueRef pos[4] = { LLVMGetParam(ctx->main_fn, SI_PARAM_POS_X_FLOAT), LLVMGetParam(ctx->main_fn, SI_PARAM_POS_Y_FLOAT), LLVMConstReal(ctx->f32, 0), LLVMConstReal(ctx->f32, 0) }; pos[0] = lp_build_emit_llvm_unary(&ctx->bld_base, TGSI_OPCODE_FRC, pos[0]); pos[1] = lp_build_emit_llvm_unary(&ctx->bld_base, TGSI_OPCODE_FRC, pos[1]); value = lp_build_gather_values(gallivm, pos, 4); break; } case TGSI_SEMANTIC_SAMPLEMASK: /* This can only occur with the OpenGL Core profile, which * doesn't support smoothing. */ value = LLVMGetParam(ctx->main_fn, SI_PARAM_SAMPLE_COVERAGE); break; case TGSI_SEMANTIC_TESSCOORD: { LLVMValueRef coord[4] = { LLVMGetParam(ctx->main_fn, ctx->param_tes_u), LLVMGetParam(ctx->main_fn, ctx->param_tes_v), bld->zero, bld->zero }; /* For triangles, the vector should be (u, v, 1-u-v). */ if (ctx->shader->selector->info.properties[TGSI_PROPERTY_TES_PRIM_MODE] == PIPE_PRIM_TRIANGLES) coord[2] = lp_build_sub(bld, bld->one, lp_build_add(bld, coord[0], coord[1])); value = lp_build_gather_values(gallivm, coord, 4); break; } case TGSI_SEMANTIC_VERTICESIN: if (ctx->type == PIPE_SHADER_TESS_CTRL) value = unpack_param(ctx, ctx->param_tcs_out_lds_layout, 26, 6); else if (ctx->type == PIPE_SHADER_TESS_EVAL) value = unpack_param(ctx, ctx->param_tcs_offchip_layout, 6, 6); else assert(!"invalid shader stage for TGSI_SEMANTIC_VERTICESIN"); break; case TGSI_SEMANTIC_TESSINNER: case TGSI_SEMANTIC_TESSOUTER: { LLVMValueRef buffer, base, addr; int param = si_shader_io_get_unique_index_patch(decl->Semantic.Name, 0); buffer = desc_from_addr_base64k(ctx, ctx->param_tcs_offchip_addr_base64k); base = LLVMGetParam(ctx->main_fn, ctx->param_tcs_offchip_offset); addr = get_tcs_tes_buffer_address(ctx, get_rel_patch_id(ctx), NULL, LLVMConstInt(ctx->i32, param, 0)); value = buffer_load(&ctx->bld_base, TGSI_TYPE_FLOAT, ~0, buffer, base, addr, true); break; } case TGSI_SEMANTIC_DEFAULT_TESSOUTER_SI: case TGSI_SEMANTIC_DEFAULT_TESSINNER_SI: { LLVMValueRef buf, slot, val[4]; int i, offset; slot = LLVMConstInt(ctx->i32, SI_HS_CONST_DEFAULT_TESS_LEVELS, 0); buf = LLVMGetParam(ctx->main_fn, ctx->param_rw_buffers); buf = ac_build_indexed_load_const(&ctx->ac, buf, slot); offset = decl->Semantic.Name == TGSI_SEMANTIC_DEFAULT_TESSINNER_SI ? 4 : 0; for (i = 0; i < 4; i++) val[i] = buffer_load_const(ctx, buf, LLVMConstInt(ctx->i32, (offset + i) * 4, 0)); value = lp_build_gather_values(gallivm, val, 4); break; } case TGSI_SEMANTIC_PRIMID: value = get_primitive_id(&ctx->bld_base, 0); break; case TGSI_SEMANTIC_GRID_SIZE: value = LLVMGetParam(ctx->main_fn, ctx->param_grid_size); break; case TGSI_SEMANTIC_BLOCK_SIZE: { LLVMValueRef values[3]; unsigned i; unsigned *properties = ctx->shader->selector->info.properties; if (properties[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH] != 0) { unsigned sizes[3] = { properties[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH], properties[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT], properties[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH] }; for (i = 0; i < 3; ++i) values[i] = LLVMConstInt(ctx->i32, sizes[i], 0); value = lp_build_gather_values(gallivm, values, 3); } else { value = LLVMGetParam(ctx->main_fn, ctx->param_block_size); } break; } case TGSI_SEMANTIC_BLOCK_ID: { LLVMValueRef values[3]; for (int i = 0; i < 3; i++) { values[i] = ctx->i32_0; if (ctx->param_block_id[i] >= 0) { values[i] = LLVMGetParam(ctx->main_fn, ctx->param_block_id[i]); } } value = lp_build_gather_values(gallivm, values, 3); break; } case TGSI_SEMANTIC_THREAD_ID: value = LLVMGetParam(ctx->main_fn, ctx->param_thread_id); break; case TGSI_SEMANTIC_HELPER_INVOCATION: value = lp_build_intrinsic(gallivm->builder, "llvm.amdgcn.ps.live", ctx->i1, NULL, 0, LP_FUNC_ATTR_READNONE); value = LLVMBuildNot(gallivm->builder, value, ""); value = LLVMBuildSExt(gallivm->builder, value, ctx->i32, ""); break; case TGSI_SEMANTIC_SUBGROUP_SIZE: value = LLVMConstInt(ctx->i32, 64, 0); break; case TGSI_SEMANTIC_SUBGROUP_INVOCATION: value = ac_get_thread_id(&ctx->ac); break; case TGSI_SEMANTIC_SUBGROUP_EQ_MASK: { LLVMValueRef id = ac_get_thread_id(&ctx->ac); id = LLVMBuildZExt(gallivm->builder, id, ctx->i64, ""); value = LLVMBuildShl(gallivm->builder, LLVMConstInt(ctx->i64, 1, 0), id, ""); value = LLVMBuildBitCast(gallivm->builder, value, ctx->v2i32, ""); break; } case TGSI_SEMANTIC_SUBGROUP_GE_MASK: case TGSI_SEMANTIC_SUBGROUP_GT_MASK: case TGSI_SEMANTIC_SUBGROUP_LE_MASK: case TGSI_SEMANTIC_SUBGROUP_LT_MASK: { LLVMValueRef id = ac_get_thread_id(&ctx->ac); if (decl->Semantic.Name == TGSI_SEMANTIC_SUBGROUP_GT_MASK || decl->Semantic.Name == TGSI_SEMANTIC_SUBGROUP_LE_MASK) { /* All bits set except LSB */ value = LLVMConstInt(ctx->i64, -2, 0); } else { /* All bits set */ value = LLVMConstInt(ctx->i64, -1, 0); } id = LLVMBuildZExt(gallivm->builder, id, ctx->i64, ""); value = LLVMBuildShl(gallivm->builder, value, id, ""); if (decl->Semantic.Name == TGSI_SEMANTIC_SUBGROUP_LE_MASK || decl->Semantic.Name == TGSI_SEMANTIC_SUBGROUP_LT_MASK) value = LLVMBuildNot(gallivm->builder, value, ""); value = LLVMBuildBitCast(gallivm->builder, value, ctx->v2i32, ""); break; } default: assert(!"unknown system value"); return; } ctx->system_values[index] = value; } static void declare_compute_memory(struct si_shader_context *ctx, const struct tgsi_full_declaration *decl) { struct si_shader_selector *sel = ctx->shader->selector; struct gallivm_state *gallivm = &ctx->gallivm; LLVMTypeRef i8p = LLVMPointerType(ctx->i8, LOCAL_ADDR_SPACE); LLVMValueRef var; assert(decl->Declaration.MemType == TGSI_MEMORY_TYPE_SHARED); assert(decl->Range.First == decl->Range.Last); assert(!ctx->shared_memory); var = LLVMAddGlobalInAddressSpace(gallivm->module, LLVMArrayType(ctx->i8, sel->local_size), "compute_lds", LOCAL_ADDR_SPACE); LLVMSetAlignment(var, 4); ctx->shared_memory = LLVMBuildBitCast(gallivm->builder, var, i8p, ""); } static LLVMValueRef load_const_buffer_desc(struct si_shader_context *ctx, int i) { LLVMValueRef list_ptr = LLVMGetParam(ctx->main_fn, ctx->param_const_and_shader_buffers); return ac_build_indexed_load_const(&ctx->ac, list_ptr, LLVMConstInt(ctx->i32, si_get_constbuf_slot(i), 0)); } static LLVMValueRef fetch_constant( struct lp_build_tgsi_context *bld_base, const struct tgsi_full_src_register *reg, enum tgsi_opcode_type type, unsigned swizzle) { struct si_shader_context *ctx = si_shader_context(bld_base); struct lp_build_context *base = &bld_base->base; const struct tgsi_ind_register *ireg = ®->Indirect; unsigned buf, idx; LLVMValueRef addr, bufp; LLVMValueRef result; if (swizzle == LP_CHAN_ALL) { unsigned chan; LLVMValueRef values[4]; for (chan = 0; chan < TGSI_NUM_CHANNELS; ++chan) values[chan] = fetch_constant(bld_base, reg, type, chan); return lp_build_gather_values(&ctx->gallivm, values, 4); } buf = reg->Register.Dimension ? reg->Dimension.Index : 0; idx = reg->Register.Index * 4 + swizzle; if (reg->Register.Dimension && reg->Dimension.Indirect) { LLVMValueRef ptr = LLVMGetParam(ctx->main_fn, ctx->param_const_and_shader_buffers); LLVMValueRef index; index = si_get_bounded_indirect_index(ctx, ®->DimIndirect, reg->Dimension.Index, ctx->num_const_buffers); index = LLVMBuildAdd(ctx->gallivm.builder, index, LLVMConstInt(ctx->i32, SI_NUM_SHADER_BUFFERS, 0), ""); bufp = ac_build_indexed_load_const(&ctx->ac, ptr, index); } else bufp = load_const_buffer_desc(ctx, buf); if (reg->Register.Indirect) { addr = ctx->addrs[ireg->Index][ireg->Swizzle]; addr = LLVMBuildLoad(base->gallivm->builder, addr, "load addr reg"); addr = lp_build_mul_imm(&bld_base->uint_bld, addr, 16); addr = lp_build_add(&bld_base->uint_bld, addr, LLVMConstInt(ctx->i32, idx * 4, 0)); } else { addr = LLVMConstInt(ctx->i32, idx * 4, 0); } result = buffer_load_const(ctx, bufp, addr); if (!tgsi_type_is_64bit(type)) result = bitcast(bld_base, type, result); else { LLVMValueRef addr2, result2; addr2 = lp_build_add(&bld_base->uint_bld, addr, LLVMConstInt(ctx->i32, 4, 0)); result2 = buffer_load_const(ctx, bufp, addr2); result = si_llvm_emit_fetch_64bit(bld_base, type, result, result2); } return result; } /* Upper 16 bits must be zero. */ static LLVMValueRef si_llvm_pack_two_int16(struct si_shader_context *ctx, LLVMValueRef val[2]) { return LLVMBuildOr(ctx->gallivm.builder, val[0], LLVMBuildShl(ctx->gallivm.builder, val[1], LLVMConstInt(ctx->i32, 16, 0), ""), ""); } /* Upper 16 bits are ignored and will be dropped. */ static LLVMValueRef si_llvm_pack_two_int32_as_int16(struct si_shader_context *ctx, LLVMValueRef val[2]) { LLVMValueRef v[2] = { LLVMBuildAnd(ctx->gallivm.builder, val[0], LLVMConstInt(ctx->i32, 0xffff, 0), ""), val[1], }; return si_llvm_pack_two_int16(ctx, v); } /* Initialize arguments for the shader export intrinsic */ static void si_llvm_init_export_args(struct lp_build_tgsi_context *bld_base, LLVMValueRef *values, unsigned target, struct ac_export_args *args) { struct si_shader_context *ctx = si_shader_context(bld_base); struct lp_build_context *base = &bld_base->base; LLVMBuilderRef builder = ctx->gallivm.builder; LLVMValueRef val[4]; unsigned spi_shader_col_format = V_028714_SPI_SHADER_32_ABGR; unsigned chan; bool is_int8, is_int10; /* Default is 0xf. Adjusted below depending on the format. */ args->enabled_channels = 0xf; /* writemask */ /* Specify whether the EXEC mask represents the valid mask */ args->valid_mask = 0; /* Specify whether this is the last export */ args->done = 0; /* Specify the target we are exporting */ args->target = target; if (ctx->type == PIPE_SHADER_FRAGMENT) { const struct si_shader_key *key = &ctx->shader->key; unsigned col_formats = key->part.ps.epilog.spi_shader_col_format; int cbuf = target - V_008DFC_SQ_EXP_MRT; assert(cbuf >= 0 && cbuf < 8); spi_shader_col_format = (col_formats >> (cbuf * 4)) & 0xf; is_int8 = (key->part.ps.epilog.color_is_int8 >> cbuf) & 0x1; is_int10 = (key->part.ps.epilog.color_is_int10 >> cbuf) & 0x1; } args->compr = false; args->out[0] = base->undef; args->out[1] = base->undef; args->out[2] = base->undef; args->out[3] = base->undef; switch (spi_shader_col_format) { case V_028714_SPI_SHADER_ZERO: args->enabled_channels = 0; /* writemask */ args->target = V_008DFC_SQ_EXP_NULL; break; case V_028714_SPI_SHADER_32_R: args->enabled_channels = 1; /* writemask */ args->out[0] = values[0]; break; case V_028714_SPI_SHADER_32_GR: args->enabled_channels = 0x3; /* writemask */ args->out[0] = values[0]; args->out[1] = values[1]; break; case V_028714_SPI_SHADER_32_AR: args->enabled_channels = 0x9; /* writemask */ args->out[0] = values[0]; args->out[3] = values[3]; break; case V_028714_SPI_SHADER_FP16_ABGR: args->compr = 1; /* COMPR flag */ for (chan = 0; chan < 2; chan++) { LLVMValueRef pack_args[2] = { values[2 * chan], values[2 * chan + 1] }; LLVMValueRef packed; packed = ac_build_cvt_pkrtz_f16(&ctx->ac, pack_args); args->out[chan] = LLVMBuildBitCast(ctx->gallivm.builder, packed, ctx->f32, ""); } break; case V_028714_SPI_SHADER_UNORM16_ABGR: for (chan = 0; chan < 4; chan++) { val[chan] = ac_build_clamp(&ctx->ac, values[chan]); val[chan] = LLVMBuildFMul(builder, val[chan], LLVMConstReal(ctx->f32, 65535), ""); val[chan] = LLVMBuildFAdd(builder, val[chan], LLVMConstReal(ctx->f32, 0.5), ""); val[chan] = LLVMBuildFPToUI(builder, val[chan], ctx->i32, ""); } args->compr = 1; /* COMPR flag */ args->out[0] = bitcast(bld_base, TGSI_TYPE_FLOAT, si_llvm_pack_two_int16(ctx, val)); args->out[1] = bitcast(bld_base, TGSI_TYPE_FLOAT, si_llvm_pack_two_int16(ctx, val+2)); break; case V_028714_SPI_SHADER_SNORM16_ABGR: for (chan = 0; chan < 4; chan++) { /* Clamp between [-1, 1]. */ val[chan] = lp_build_emit_llvm_binary(bld_base, TGSI_OPCODE_MIN, values[chan], LLVMConstReal(ctx->f32, 1)); val[chan] = lp_build_emit_llvm_binary(bld_base, TGSI_OPCODE_MAX, val[chan], LLVMConstReal(ctx->f32, -1)); /* Convert to a signed integer in [-32767, 32767]. */ val[chan] = LLVMBuildFMul(builder, val[chan], LLVMConstReal(ctx->f32, 32767), ""); /* If positive, add 0.5, else add -0.5. */ val[chan] = LLVMBuildFAdd(builder, val[chan], LLVMBuildSelect(builder, LLVMBuildFCmp(builder, LLVMRealOGE, val[chan], base->zero, ""), LLVMConstReal(ctx->f32, 0.5), LLVMConstReal(ctx->f32, -0.5), ""), ""); val[chan] = LLVMBuildFPToSI(builder, val[chan], ctx->i32, ""); } args->compr = 1; /* COMPR flag */ args->out[0] = bitcast(bld_base, TGSI_TYPE_FLOAT, si_llvm_pack_two_int32_as_int16(ctx, val)); args->out[1] = bitcast(bld_base, TGSI_TYPE_FLOAT, si_llvm_pack_two_int32_as_int16(ctx, val+2)); break; case V_028714_SPI_SHADER_UINT16_ABGR: { LLVMValueRef max_rgb = LLVMConstInt(ctx->i32, is_int8 ? 255 : is_int10 ? 1023 : 65535, 0); LLVMValueRef max_alpha = !is_int10 ? max_rgb : LLVMConstInt(ctx->i32, 3, 0); /* Clamp. */ for (chan = 0; chan < 4; chan++) { val[chan] = bitcast(bld_base, TGSI_TYPE_UNSIGNED, values[chan]); val[chan] = lp_build_emit_llvm_binary(bld_base, TGSI_OPCODE_UMIN, val[chan], chan == 3 ? max_alpha : max_rgb); } args->compr = 1; /* COMPR flag */ args->out[0] = bitcast(bld_base, TGSI_TYPE_FLOAT, si_llvm_pack_two_int16(ctx, val)); args->out[1] = bitcast(bld_base, TGSI_TYPE_FLOAT, si_llvm_pack_two_int16(ctx, val+2)); break; } case V_028714_SPI_SHADER_SINT16_ABGR: { LLVMValueRef max_rgb = LLVMConstInt(ctx->i32, is_int8 ? 127 : is_int10 ? 511 : 32767, 0); LLVMValueRef min_rgb = LLVMConstInt(ctx->i32, is_int8 ? -128 : is_int10 ? -512 : -32768, 0); LLVMValueRef max_alpha = !is_int10 ? max_rgb : ctx->i32_1; LLVMValueRef min_alpha = !is_int10 ? min_rgb : LLVMConstInt(ctx->i32, -2, 0); /* Clamp. */ for (chan = 0; chan < 4; chan++) { val[chan] = bitcast(bld_base, TGSI_TYPE_UNSIGNED, values[chan]); val[chan] = lp_build_emit_llvm_binary(bld_base, TGSI_OPCODE_IMIN, val[chan], chan == 3 ? max_alpha : max_rgb); val[chan] = lp_build_emit_llvm_binary(bld_base, TGSI_OPCODE_IMAX, val[chan], chan == 3 ? min_alpha : min_rgb); } args->compr = 1; /* COMPR flag */ args->out[0] = bitcast(bld_base, TGSI_TYPE_FLOAT, si_llvm_pack_two_int32_as_int16(ctx, val)); args->out[1] = bitcast(bld_base, TGSI_TYPE_FLOAT, si_llvm_pack_two_int32_as_int16(ctx, val+2)); break; } case V_028714_SPI_SHADER_32_ABGR: memcpy(&args->out[0], values, sizeof(values[0]) * 4); break; } } static void si_alpha_test(struct lp_build_tgsi_context *bld_base, LLVMValueRef alpha) { struct si_shader_context *ctx = si_shader_context(bld_base); if (ctx->shader->key.part.ps.epilog.alpha_func != PIPE_FUNC_NEVER) { LLVMValueRef alpha_ref = LLVMGetParam(ctx->main_fn, SI_PARAM_ALPHA_REF); LLVMValueRef alpha_pass = lp_build_cmp(&bld_base->base, ctx->shader->key.part.ps.epilog.alpha_func, alpha, alpha_ref); LLVMValueRef arg = lp_build_select(&bld_base->base, alpha_pass, LLVMConstReal(ctx->f32, 1.0f), LLVMConstReal(ctx->f32, -1.0f)); ac_build_kill(&ctx->ac, arg); } else { ac_build_kill(&ctx->ac, NULL); } } static LLVMValueRef si_scale_alpha_by_sample_mask(struct lp_build_tgsi_context *bld_base, LLVMValueRef alpha, unsigned samplemask_param) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef coverage; /* alpha = alpha * popcount(coverage) / SI_NUM_SMOOTH_AA_SAMPLES */ coverage = LLVMGetParam(ctx->main_fn, samplemask_param); coverage = bitcast(bld_base, TGSI_TYPE_SIGNED, coverage); coverage = lp_build_intrinsic(gallivm->builder, "llvm.ctpop.i32", ctx->i32, &coverage, 1, LP_FUNC_ATTR_READNONE); coverage = LLVMBuildUIToFP(gallivm->builder, coverage, ctx->f32, ""); coverage = LLVMBuildFMul(gallivm->builder, coverage, LLVMConstReal(ctx->f32, 1.0 / SI_NUM_SMOOTH_AA_SAMPLES), ""); return LLVMBuildFMul(gallivm->builder, alpha, coverage, ""); } static void si_llvm_emit_clipvertex(struct lp_build_tgsi_context *bld_base, struct ac_export_args *pos, LLVMValueRef *out_elts) { struct si_shader_context *ctx = si_shader_context(bld_base); struct lp_build_context *base = &bld_base->base; unsigned reg_index; unsigned chan; unsigned const_chan; LLVMValueRef base_elt; LLVMValueRef ptr = LLVMGetParam(ctx->main_fn, ctx->param_rw_buffers); LLVMValueRef constbuf_index = LLVMConstInt(ctx->i32, SI_VS_CONST_CLIP_PLANES, 0); LLVMValueRef const_resource = ac_build_indexed_load_const(&ctx->ac, ptr, constbuf_index); for (reg_index = 0; reg_index < 2; reg_index ++) { struct ac_export_args *args = &pos[2 + reg_index]; args->out[0] = args->out[1] = args->out[2] = args->out[3] = LLVMConstReal(ctx->f32, 0.0f); /* Compute dot products of position and user clip plane vectors */ for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) { for (const_chan = 0; const_chan < TGSI_NUM_CHANNELS; const_chan++) { LLVMValueRef addr = LLVMConstInt(ctx->i32, ((reg_index * 4 + chan) * 4 + const_chan) * 4, 0); base_elt = buffer_load_const(ctx, const_resource, addr); args->out[chan] = lp_build_add(base, args->out[chan], lp_build_mul(base, base_elt, out_elts[const_chan])); } } args->enabled_channels = 0xf; args->valid_mask = 0; args->done = 0; args->target = V_008DFC_SQ_EXP_POS + 2 + reg_index; args->compr = 0; } } static void si_dump_streamout(struct pipe_stream_output_info *so) { unsigned i; if (so->num_outputs) fprintf(stderr, "STREAMOUT\n"); for (i = 0; i < so->num_outputs; i++) { unsigned mask = ((1 << so->output[i].num_components) - 1) << so->output[i].start_component; fprintf(stderr, " %i: BUF%i[%i..%i] <- OUT[%i].%s%s%s%s\n", i, so->output[i].output_buffer, so->output[i].dst_offset, so->output[i].dst_offset + so->output[i].num_components - 1, so->output[i].register_index, mask & 1 ? "x" : "", mask & 2 ? "y" : "", mask & 4 ? "z" : "", mask & 8 ? "w" : ""); } } static void emit_streamout_output(struct si_shader_context *ctx, LLVMValueRef const *so_buffers, LLVMValueRef const *so_write_offsets, struct pipe_stream_output *stream_out, struct si_shader_output_values *shader_out) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMBuilderRef builder = gallivm->builder; unsigned buf_idx = stream_out->output_buffer; unsigned start = stream_out->start_component; unsigned num_comps = stream_out->num_components; LLVMValueRef out[4]; assert(num_comps && num_comps <= 4); if (!num_comps || num_comps > 4) return; /* Load the output as int. */ for (int j = 0; j < num_comps; j++) { assert(stream_out->stream == shader_out->vertex_stream[start + j]); out[j] = LLVMBuildBitCast(builder, shader_out->values[start + j], ctx->i32, ""); } /* Pack the output. */ LLVMValueRef vdata = NULL; switch (num_comps) { case 1: /* as i32 */ vdata = out[0]; break; case 2: /* as v2i32 */ case 3: /* as v4i32 (aligned to 4) */ case 4: /* as v4i32 */ vdata = LLVMGetUndef(LLVMVectorType(ctx->i32, util_next_power_of_two(num_comps))); for (int j = 0; j < num_comps; j++) { vdata = LLVMBuildInsertElement(builder, vdata, out[j], LLVMConstInt(ctx->i32, j, 0), ""); } break; } ac_build_buffer_store_dword(&ctx->ac, so_buffers[buf_idx], vdata, num_comps, so_write_offsets[buf_idx], ctx->i32_0, stream_out->dst_offset * 4, 1, 1, true, false); } /** * Write streamout data to buffers for vertex stream @p stream (different * vertex streams can occur for GS copy shaders). */ static void si_llvm_emit_streamout(struct si_shader_context *ctx, struct si_shader_output_values *outputs, unsigned noutput, unsigned stream) { struct si_shader_selector *sel = ctx->shader->selector; struct pipe_stream_output_info *so = &sel->so; struct gallivm_state *gallivm = &ctx->gallivm; LLVMBuilderRef builder = gallivm->builder; int i; struct lp_build_if_state if_ctx; /* Get bits [22:16], i.e. (so_param >> 16) & 127; */ LLVMValueRef so_vtx_count = unpack_param(ctx, ctx->param_streamout_config, 16, 7); LLVMValueRef tid = ac_get_thread_id(&ctx->ac); /* can_emit = tid < so_vtx_count; */ LLVMValueRef can_emit = LLVMBuildICmp(builder, LLVMIntULT, tid, so_vtx_count, ""); /* Emit the streamout code conditionally. This actually avoids * out-of-bounds buffer access. The hw tells us via the SGPR * (so_vtx_count) which threads are allowed to emit streamout data. */ lp_build_if(&if_ctx, gallivm, can_emit); { /* The buffer offset is computed as follows: * ByteOffset = streamout_offset[buffer_id]*4 + * (streamout_write_index + thread_id)*stride[buffer_id] + * attrib_offset */ LLVMValueRef so_write_index = LLVMGetParam(ctx->main_fn, ctx->param_streamout_write_index); /* Compute (streamout_write_index + thread_id). */ so_write_index = LLVMBuildAdd(builder, so_write_index, tid, ""); /* Load the descriptor and compute the write offset for each * enabled buffer. */ LLVMValueRef so_write_offset[4] = {}; LLVMValueRef so_buffers[4]; LLVMValueRef buf_ptr = LLVMGetParam(ctx->main_fn, ctx->param_rw_buffers); for (i = 0; i < 4; i++) { if (!so->stride[i]) continue; LLVMValueRef offset = LLVMConstInt(ctx->i32, SI_VS_STREAMOUT_BUF0 + i, 0); so_buffers[i] = ac_build_indexed_load_const(&ctx->ac, buf_ptr, offset); LLVMValueRef so_offset = LLVMGetParam(ctx->main_fn, ctx->param_streamout_offset[i]); so_offset = LLVMBuildMul(builder, so_offset, LLVMConstInt(ctx->i32, 4, 0), ""); so_write_offset[i] = LLVMBuildMul(builder, so_write_index, LLVMConstInt(ctx->i32, so->stride[i]*4, 0), ""); so_write_offset[i] = LLVMBuildAdd(builder, so_write_offset[i], so_offset, ""); } /* Write streamout data. */ for (i = 0; i < so->num_outputs; i++) { unsigned reg = so->output[i].register_index; if (reg >= noutput) continue; if (stream != so->output[i].stream) continue; emit_streamout_output(ctx, so_buffers, so_write_offset, &so->output[i], &outputs[reg]); } } lp_build_endif(&if_ctx); } /* Generate export instructions for hardware VS shader stage */ static void si_llvm_export_vs(struct lp_build_tgsi_context *bld_base, struct si_shader_output_values *outputs, unsigned noutput) { struct si_shader_context *ctx = si_shader_context(bld_base); struct si_shader *shader = ctx->shader; struct lp_build_context *base = &bld_base->base; struct ac_export_args args, pos_args[4] = {}; LLVMValueRef psize_value = NULL, edgeflag_value = NULL, layer_value = NULL, viewport_index_value = NULL; unsigned semantic_name, semantic_index; unsigned target; unsigned param_count = 0; unsigned pos_idx; int i; for (i = 0; i < noutput; i++) { semantic_name = outputs[i].semantic_name; semantic_index = outputs[i].semantic_index; bool export_param = true; switch (semantic_name) { case TGSI_SEMANTIC_POSITION: /* ignore these */ case TGSI_SEMANTIC_PSIZE: case TGSI_SEMANTIC_CLIPVERTEX: case TGSI_SEMANTIC_EDGEFLAG: break; case TGSI_SEMANTIC_GENERIC: /* don't process indices the function can't handle */ if (semantic_index >= SI_MAX_IO_GENERIC) break; /* fall through */ default: if (shader->key.opt.kill_outputs & (1ull << si_shader_io_get_unique_index(semantic_name, semantic_index))) export_param = false; } if (outputs[i].vertex_stream[0] != 0 && outputs[i].vertex_stream[1] != 0 && outputs[i].vertex_stream[2] != 0 && outputs[i].vertex_stream[3] != 0) export_param = false; handle_semantic: /* Select the correct target */ switch(semantic_name) { case TGSI_SEMANTIC_PSIZE: psize_value = outputs[i].values[0]; continue; case TGSI_SEMANTIC_EDGEFLAG: edgeflag_value = outputs[i].values[0]; continue; case TGSI_SEMANTIC_LAYER: layer_value = outputs[i].values[0]; semantic_name = TGSI_SEMANTIC_GENERIC; goto handle_semantic; case TGSI_SEMANTIC_VIEWPORT_INDEX: viewport_index_value = outputs[i].values[0]; semantic_name = TGSI_SEMANTIC_GENERIC; goto handle_semantic; case TGSI_SEMANTIC_POSITION: target = V_008DFC_SQ_EXP_POS; break; case TGSI_SEMANTIC_CLIPDIST: if (shader->key.opt.clip_disable) { semantic_name = TGSI_SEMANTIC_GENERIC; goto handle_semantic; } target = V_008DFC_SQ_EXP_POS + 2 + semantic_index; break; case TGSI_SEMANTIC_CLIPVERTEX: if (shader->key.opt.clip_disable) continue; si_llvm_emit_clipvertex(bld_base, pos_args, outputs[i].values); continue; case TGSI_SEMANTIC_COLOR: case TGSI_SEMANTIC_BCOLOR: case TGSI_SEMANTIC_PRIMID: case TGSI_SEMANTIC_FOG: case TGSI_SEMANTIC_TEXCOORD: case TGSI_SEMANTIC_GENERIC: if (!export_param) continue; target = V_008DFC_SQ_EXP_PARAM + param_count; assert(i < ARRAY_SIZE(shader->info.vs_output_param_offset)); shader->info.vs_output_param_offset[i] = param_count; param_count++; break; default: target = 0; fprintf(stderr, "Warning: SI unhandled vs output type:%d\n", semantic_name); } si_llvm_init_export_args(bld_base, outputs[i].values, target, &args); if (target >= V_008DFC_SQ_EXP_POS && target <= (V_008DFC_SQ_EXP_POS + 3)) { memcpy(&pos_args[target - V_008DFC_SQ_EXP_POS], &args, sizeof(args)); } else { ac_build_export(&ctx->ac, &args); } if (semantic_name == TGSI_SEMANTIC_CLIPDIST) { semantic_name = TGSI_SEMANTIC_GENERIC; goto handle_semantic; } } shader->info.nr_param_exports = param_count; /* We need to add the position output manually if it's missing. */ if (!pos_args[0].out[0]) { pos_args[0].enabled_channels = 0xf; /* writemask */ pos_args[0].valid_mask = 0; /* EXEC mask */ pos_args[0].done = 0; /* last export? */ pos_args[0].target = V_008DFC_SQ_EXP_POS; pos_args[0].compr = 0; /* COMPR flag */ pos_args[0].out[0] = base->zero; /* X */ pos_args[0].out[1] = base->zero; /* Y */ pos_args[0].out[2] = base->zero; /* Z */ pos_args[0].out[3] = base->one; /* W */ } /* Write the misc vector (point size, edgeflag, layer, viewport). */ if (shader->selector->info.writes_psize || shader->selector->info.writes_edgeflag || shader->selector->info.writes_viewport_index || shader->selector->info.writes_layer) { pos_args[1].enabled_channels = shader->selector->info.writes_psize | (shader->selector->info.writes_edgeflag << 1) | (shader->selector->info.writes_layer << 2); pos_args[1].valid_mask = 0; /* EXEC mask */ pos_args[1].done = 0; /* last export? */ pos_args[1].target = V_008DFC_SQ_EXP_POS + 1; pos_args[1].compr = 0; /* COMPR flag */ pos_args[1].out[0] = base->zero; /* X */ pos_args[1].out[1] = base->zero; /* Y */ pos_args[1].out[2] = base->zero; /* Z */ pos_args[1].out[3] = base->zero; /* W */ if (shader->selector->info.writes_psize) pos_args[1].out[0] = psize_value; if (shader->selector->info.writes_edgeflag) { /* The output is a float, but the hw expects an integer * with the first bit containing the edge flag. */ edgeflag_value = LLVMBuildFPToUI(ctx->gallivm.builder, edgeflag_value, ctx->i32, ""); edgeflag_value = lp_build_min(&bld_base->int_bld, edgeflag_value, ctx->i32_1); /* The LLVM intrinsic expects a float. */ pos_args[1].out[1] = LLVMBuildBitCast(ctx->gallivm.builder, edgeflag_value, ctx->f32, ""); } if (ctx->screen->b.chip_class >= GFX9) { /* GFX9 has the layer in out.z[10:0] and the viewport * index in out.z[19:16]. */ if (shader->selector->info.writes_layer) pos_args[1].out[2] = layer_value; if (shader->selector->info.writes_viewport_index) { LLVMValueRef v = viewport_index_value; v = bitcast(bld_base, TGSI_TYPE_UNSIGNED, v); v = LLVMBuildShl(ctx->gallivm.builder, v, LLVMConstInt(ctx->i32, 16, 0), ""); v = LLVMBuildOr(ctx->gallivm.builder, v, bitcast(bld_base, TGSI_TYPE_UNSIGNED, pos_args[1].out[2]), ""); pos_args[1].out[2] = bitcast(bld_base, TGSI_TYPE_FLOAT, v); pos_args[1].enabled_channels |= 1 << 2; } } else { if (shader->selector->info.writes_layer) pos_args[1].out[2] = layer_value; if (shader->selector->info.writes_viewport_index) { pos_args[1].out[3] = viewport_index_value; pos_args[1].enabled_channels |= 1 << 3; } } } for (i = 0; i < 4; i++) if (pos_args[i].out[0]) shader->info.nr_pos_exports++; pos_idx = 0; for (i = 0; i < 4; i++) { if (!pos_args[i].out[0]) continue; /* Specify the target we are exporting */ pos_args[i].target = V_008DFC_SQ_EXP_POS + pos_idx++; if (pos_idx == shader->info.nr_pos_exports) /* Specify that this is the last export */ pos_args[i].done = 1; ac_build_export(&ctx->ac, &pos_args[i]); } } /** * Forward all outputs from the vertex shader to the TES. This is only used * for the fixed function TCS. */ static void si_copy_tcs_inputs(struct lp_build_tgsi_context *bld_base) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef invocation_id, buffer, buffer_offset; LLVMValueRef lds_vertex_stride, lds_vertex_offset, lds_base; uint64_t inputs; invocation_id = unpack_param(ctx, ctx->param_tcs_rel_ids, 8, 5); buffer = desc_from_addr_base64k(ctx, ctx->param_tcs_offchip_addr_base64k); buffer_offset = LLVMGetParam(ctx->main_fn, ctx->param_tcs_offchip_offset); lds_vertex_stride = unpack_param(ctx, ctx->param_vs_state_bits, 24, 8); lds_vertex_offset = LLVMBuildMul(gallivm->builder, invocation_id, lds_vertex_stride, ""); lds_base = get_tcs_in_current_patch_offset(ctx); lds_base = LLVMBuildAdd(gallivm->builder, lds_base, lds_vertex_offset, ""); inputs = ctx->shader->key.mono.u.ff_tcs_inputs_to_copy; while (inputs) { unsigned i = u_bit_scan64(&inputs); LLVMValueRef lds_ptr = LLVMBuildAdd(gallivm->builder, lds_base, LLVMConstInt(ctx->i32, 4 * i, 0), ""); LLVMValueRef buffer_addr = get_tcs_tes_buffer_address(ctx, get_rel_patch_id(ctx), invocation_id, LLVMConstInt(ctx->i32, i, 0)); LLVMValueRef value = lds_load(bld_base, TGSI_TYPE_SIGNED, ~0, lds_ptr); ac_build_buffer_store_dword(&ctx->ac, buffer, value, 4, buffer_addr, buffer_offset, 0, 1, 0, true, false); } } static void si_write_tess_factors(struct lp_build_tgsi_context *bld_base, LLVMValueRef rel_patch_id, LLVMValueRef invocation_id, LLVMValueRef tcs_out_current_patch_data_offset) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; struct si_shader *shader = ctx->shader; unsigned tess_inner_index, tess_outer_index; LLVMValueRef lds_base, lds_inner, lds_outer, byteoffset, buffer; LLVMValueRef out[6], vec0, vec1, tf_base, inner[4], outer[4]; unsigned stride, outer_comps, inner_comps, i, offset; struct lp_build_if_state if_ctx, inner_if_ctx; si_llvm_emit_barrier(NULL, bld_base, NULL); /* Do this only for invocation 0, because the tess levels are per-patch, * not per-vertex. * * This can't jump, because invocation 0 executes this. It should * at least mask out the loads and stores for other invocations. */ lp_build_if(&if_ctx, gallivm, LLVMBuildICmp(gallivm->builder, LLVMIntEQ, invocation_id, ctx->i32_0, "")); /* Determine the layout of one tess factor element in the buffer. */ switch (shader->key.part.tcs.epilog.prim_mode) { case PIPE_PRIM_LINES: stride = 2; /* 2 dwords, 1 vec2 store */ outer_comps = 2; inner_comps = 0; break; case PIPE_PRIM_TRIANGLES: stride = 4; /* 4 dwords, 1 vec4 store */ outer_comps = 3; inner_comps = 1; break; case PIPE_PRIM_QUADS: stride = 6; /* 6 dwords, 2 stores (vec4 + vec2) */ outer_comps = 4; inner_comps = 2; break; default: assert(0); return; } /* Load tess_inner and tess_outer from LDS. * Any invocation can write them, so we can't get them from a temporary. */ tess_inner_index = si_shader_io_get_unique_index_patch(TGSI_SEMANTIC_TESSINNER, 0); tess_outer_index = si_shader_io_get_unique_index_patch(TGSI_SEMANTIC_TESSOUTER, 0); lds_base = tcs_out_current_patch_data_offset; lds_inner = LLVMBuildAdd(gallivm->builder, lds_base, LLVMConstInt(ctx->i32, tess_inner_index * 4, 0), ""); lds_outer = LLVMBuildAdd(gallivm->builder, lds_base, LLVMConstInt(ctx->i32, tess_outer_index * 4, 0), ""); for (i = 0; i < 4; i++) { inner[i] = LLVMGetUndef(ctx->i32); outer[i] = LLVMGetUndef(ctx->i32); } if (shader->key.part.tcs.epilog.prim_mode == PIPE_PRIM_LINES) { /* For isolines, the hardware expects tess factors in the * reverse order from what GLSL / TGSI specify. */ outer[0] = out[1] = lds_load(bld_base, TGSI_TYPE_SIGNED, 0, lds_outer); outer[1] = out[0] = lds_load(bld_base, TGSI_TYPE_SIGNED, 1, lds_outer); } else { for (i = 0; i < outer_comps; i++) { outer[i] = out[i] = lds_load(bld_base, TGSI_TYPE_SIGNED, i, lds_outer); } for (i = 0; i < inner_comps; i++) { inner[i] = out[outer_comps+i] = lds_load(bld_base, TGSI_TYPE_SIGNED, i, lds_inner); } } /* Convert the outputs to vectors for stores. */ vec0 = lp_build_gather_values(gallivm, out, MIN2(stride, 4)); vec1 = NULL; if (stride > 4) vec1 = lp_build_gather_values(gallivm, out+4, stride - 4); /* Get the buffer. */ buffer = desc_from_addr_base64k(ctx, ctx->param_tcs_factor_addr_base64k); /* Get the offset. */ tf_base = LLVMGetParam(ctx->main_fn, ctx->param_tcs_factor_offset); byteoffset = LLVMBuildMul(gallivm->builder, rel_patch_id, LLVMConstInt(ctx->i32, 4 * stride, 0), ""); lp_build_if(&inner_if_ctx, gallivm, LLVMBuildICmp(gallivm->builder, LLVMIntEQ, rel_patch_id, ctx->i32_0, "")); /* Store the dynamic HS control word. */ offset = 0; if (ctx->screen->b.chip_class <= VI) { ac_build_buffer_store_dword(&ctx->ac, buffer, LLVMConstInt(ctx->i32, 0x80000000, 0), 1, ctx->i32_0, tf_base, offset, 1, 0, true, false); offset += 4; } lp_build_endif(&inner_if_ctx); /* Store the tessellation factors. */ ac_build_buffer_store_dword(&ctx->ac, buffer, vec0, MIN2(stride, 4), byteoffset, tf_base, offset, 1, 0, true, false); offset += 16; if (vec1) ac_build_buffer_store_dword(&ctx->ac, buffer, vec1, stride - 4, byteoffset, tf_base, offset, 1, 0, true, false); /* Store the tess factors into the offchip buffer if TES reads them. */ if (shader->key.part.tcs.epilog.tes_reads_tess_factors) { LLVMValueRef buf, base, inner_vec, outer_vec, tf_outer_offset; LLVMValueRef tf_inner_offset; unsigned param_outer, param_inner; buf = desc_from_addr_base64k(ctx, ctx->param_tcs_offchip_addr_base64k); base = LLVMGetParam(ctx->main_fn, ctx->param_tcs_offchip_offset); param_outer = si_shader_io_get_unique_index_patch( TGSI_SEMANTIC_TESSOUTER, 0); tf_outer_offset = get_tcs_tes_buffer_address(ctx, rel_patch_id, NULL, LLVMConstInt(ctx->i32, param_outer, 0)); outer_vec = lp_build_gather_values(gallivm, outer, util_next_power_of_two(outer_comps)); ac_build_buffer_store_dword(&ctx->ac, buf, outer_vec, outer_comps, tf_outer_offset, base, 0, 1, 0, true, false); if (inner_comps) { param_inner = si_shader_io_get_unique_index_patch( TGSI_SEMANTIC_TESSINNER, 0); tf_inner_offset = get_tcs_tes_buffer_address(ctx, rel_patch_id, NULL, LLVMConstInt(ctx->i32, param_inner, 0)); inner_vec = inner_comps == 1 ? inner[0] : lp_build_gather_values(gallivm, inner, inner_comps); ac_build_buffer_store_dword(&ctx->ac, buf, inner_vec, inner_comps, tf_inner_offset, base, 0, 1, 0, true, false); } } lp_build_endif(&if_ctx); } static LLVMValueRef si_insert_input_ret(struct si_shader_context *ctx, LLVMValueRef ret, unsigned param, unsigned return_index) { return LLVMBuildInsertValue(ctx->gallivm.builder, ret, LLVMGetParam(ctx->main_fn, param), return_index, ""); } static LLVMValueRef si_insert_input_ret_float(struct si_shader_context *ctx, LLVMValueRef ret, unsigned param, unsigned return_index) { LLVMBuilderRef builder = ctx->gallivm.builder; LLVMValueRef p = LLVMGetParam(ctx->main_fn, param); return LLVMBuildInsertValue(builder, ret, LLVMBuildBitCast(builder, p, ctx->f32, ""), return_index, ""); } static LLVMValueRef si_insert_input_ptr_as_2xi32(struct si_shader_context *ctx, LLVMValueRef ret, unsigned param, unsigned return_index) { LLVMBuilderRef builder = ctx->gallivm.builder; LLVMValueRef ptr, lo, hi; ptr = LLVMGetParam(ctx->main_fn, param); ptr = LLVMBuildPtrToInt(builder, ptr, ctx->i64, ""); ptr = LLVMBuildBitCast(builder, ptr, ctx->v2i32, ""); lo = LLVMBuildExtractElement(builder, ptr, ctx->i32_0, ""); hi = LLVMBuildExtractElement(builder, ptr, ctx->i32_1, ""); ret = LLVMBuildInsertValue(builder, ret, lo, return_index, ""); return LLVMBuildInsertValue(builder, ret, hi, return_index + 1, ""); } /* This only writes the tessellation factor levels. */ static void si_llvm_emit_tcs_epilogue(struct lp_build_tgsi_context *bld_base) { struct si_shader_context *ctx = si_shader_context(bld_base); LLVMValueRef rel_patch_id, invocation_id, tf_lds_offset; si_copy_tcs_inputs(bld_base); rel_patch_id = get_rel_patch_id(ctx); invocation_id = unpack_param(ctx, ctx->param_tcs_rel_ids, 8, 5); tf_lds_offset = get_tcs_out_current_patch_data_offset(ctx); /* Return epilog parameters from this function. */ LLVMBuilderRef builder = ctx->gallivm.builder; LLVMValueRef ret = ctx->return_value; unsigned vgpr; if (ctx->screen->b.chip_class >= GFX9) { ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_offchip_layout, 8 + GFX9_SGPR_TCS_OFFCHIP_LAYOUT); ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_offchip_addr_base64k, 8 + GFX9_SGPR_TCS_OFFCHIP_ADDR_BASE64K); ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_factor_addr_base64k, 8 + GFX9_SGPR_TCS_FACTOR_ADDR_BASE64K); /* Tess offchip and tess factor offsets are at the beginning. */ ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_offchip_offset, 2); ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_factor_offset, 4); vgpr = 8 + GFX9_SGPR_TCS_FACTOR_ADDR_BASE64K + 1; } else { ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_offchip_layout, GFX6_SGPR_TCS_OFFCHIP_LAYOUT); ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_offchip_addr_base64k, GFX6_SGPR_TCS_OFFCHIP_ADDR_BASE64K); ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_factor_addr_base64k, GFX6_SGPR_TCS_FACTOR_ADDR_BASE64K); /* Tess offchip and tess factor offsets are after user SGPRs. */ ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_offchip_offset, GFX6_TCS_NUM_USER_SGPR); ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_factor_offset, GFX6_TCS_NUM_USER_SGPR + 1); vgpr = GFX6_TCS_NUM_USER_SGPR + 2; } /* VGPRs */ rel_patch_id = bitcast(bld_base, TGSI_TYPE_FLOAT, rel_patch_id); invocation_id = bitcast(bld_base, TGSI_TYPE_FLOAT, invocation_id); tf_lds_offset = bitcast(bld_base, TGSI_TYPE_FLOAT, tf_lds_offset); ret = LLVMBuildInsertValue(builder, ret, rel_patch_id, vgpr++, ""); ret = LLVMBuildInsertValue(builder, ret, invocation_id, vgpr++, ""); ret = LLVMBuildInsertValue(builder, ret, tf_lds_offset, vgpr++, ""); ctx->return_value = ret; } /* Pass TCS inputs from LS to TCS on GFX9. */ static void si_set_ls_return_value_for_tcs(struct si_shader_context *ctx) { LLVMValueRef ret = ctx->return_value; ret = si_insert_input_ptr_as_2xi32(ctx, ret, ctx->param_rw_buffers, 0); ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_offchip_offset, 2); ret = si_insert_input_ret(ctx, ret, ctx->param_merged_wave_info, 3); ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_factor_offset, 4); ret = si_insert_input_ret(ctx, ret, ctx->param_merged_scratch_offset, 5); ret = si_insert_input_ret(ctx, ret, ctx->param_vs_state_bits, 8 + SI_SGPR_VS_STATE_BITS); ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_offchip_layout, 8 + GFX9_SGPR_TCS_OFFCHIP_LAYOUT); ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_out_lds_offsets, 8 + GFX9_SGPR_TCS_OUT_OFFSETS); ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_out_lds_layout, 8 + GFX9_SGPR_TCS_OUT_LAYOUT); ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_offchip_addr_base64k, 8 + GFX9_SGPR_TCS_OFFCHIP_ADDR_BASE64K); ret = si_insert_input_ret(ctx, ret, ctx->param_tcs_factor_addr_base64k, 8 + GFX9_SGPR_TCS_FACTOR_ADDR_BASE64K); unsigned desc_param = ctx->param_tcs_factor_addr_base64k + 2; ret = si_insert_input_ptr_as_2xi32(ctx, ret, desc_param, 8 + GFX9_SGPR_TCS_CONST_AND_SHADER_BUFFERS); ret = si_insert_input_ptr_as_2xi32(ctx, ret, desc_param + 1, 8 + GFX9_SGPR_TCS_SAMPLERS_AND_IMAGES); unsigned vgpr = 8 + GFX9_TCS_NUM_USER_SGPR; ret = si_insert_input_ret_float(ctx, ret, ctx->param_tcs_patch_id, vgpr++); ret = si_insert_input_ret_float(ctx, ret, ctx->param_tcs_rel_ids, vgpr++); ctx->return_value = ret; } /* Pass GS inputs from ES to GS on GFX9. */ static void si_set_es_return_value_for_gs(struct si_shader_context *ctx) { LLVMValueRef ret = ctx->return_value; ret = si_insert_input_ptr_as_2xi32(ctx, ret, ctx->param_rw_buffers, 0); ret = si_insert_input_ret(ctx, ret, ctx->param_gs2vs_offset, 2); ret = si_insert_input_ret(ctx, ret, ctx->param_merged_wave_info, 3); ret = si_insert_input_ret(ctx, ret, ctx->param_merged_scratch_offset, 5); unsigned desc_param = ctx->param_vs_state_bits + 1; ret = si_insert_input_ptr_as_2xi32(ctx, ret, desc_param, 8 + GFX9_SGPR_GS_CONST_AND_SHADER_BUFFERS); ret = si_insert_input_ptr_as_2xi32(ctx, ret, desc_param + 1, 8 + GFX9_SGPR_GS_SAMPLERS_AND_IMAGES); unsigned vgpr = 8 + GFX9_GS_NUM_USER_SGPR; for (unsigned i = 0; i < 5; i++) { unsigned param = ctx->param_gs_vtx01_offset + i; ret = si_insert_input_ret_float(ctx, ret, param, vgpr++); } ctx->return_value = ret; } static void si_llvm_emit_ls_epilogue(struct lp_build_tgsi_context *bld_base) { struct si_shader_context *ctx = si_shader_context(bld_base); struct si_shader *shader = ctx->shader; struct tgsi_shader_info *info = &shader->selector->info; struct gallivm_state *gallivm = &ctx->gallivm; unsigned i, chan; LLVMValueRef vertex_id = LLVMGetParam(ctx->main_fn, ctx->param_rel_auto_id); LLVMValueRef vertex_dw_stride = unpack_param(ctx, ctx->param_vs_state_bits, 24, 8); LLVMValueRef base_dw_addr = LLVMBuildMul(gallivm->builder, vertex_id, vertex_dw_stride, ""); /* Write outputs to LDS. The next shader (TCS aka HS) will read * its inputs from it. */ for (i = 0; i < info->num_outputs; i++) { LLVMValueRef *out_ptr = ctx->outputs[i]; unsigned name = info->output_semantic_name[i]; unsigned index = info->output_semantic_index[i]; /* The ARB_shader_viewport_layer_array spec contains the * following issue: * * 2) What happens if gl_ViewportIndex or gl_Layer is * written in the vertex shader and a geometry shader is * present? * * RESOLVED: The value written by the last vertex processing * stage is used. If the last vertex processing stage * (vertex, tessellation evaluation or geometry) does not * statically assign to gl_ViewportIndex or gl_Layer, index * or layer zero is assumed. * * So writes to those outputs in VS-as-LS are simply ignored. */ if (name == TGSI_SEMANTIC_LAYER || name == TGSI_SEMANTIC_VIEWPORT_INDEX) continue; int param = si_shader_io_get_unique_index(name, index); LLVMValueRef dw_addr = LLVMBuildAdd(gallivm->builder, base_dw_addr, LLVMConstInt(ctx->i32, param * 4, 0), ""); for (chan = 0; chan < 4; chan++) { lds_store(bld_base, chan, dw_addr, LLVMBuildLoad(gallivm->builder, out_ptr[chan], "")); } } if (ctx->screen->b.chip_class >= GFX9) si_set_ls_return_value_for_tcs(ctx); } static void si_llvm_emit_es_epilogue(struct lp_build_tgsi_context *bld_base) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; struct si_shader *es = ctx->shader; struct tgsi_shader_info *info = &es->selector->info; LLVMValueRef soffset = LLVMGetParam(ctx->main_fn, ctx->param_es2gs_offset); LLVMValueRef lds_base = NULL; unsigned chan; int i; if (ctx->screen->b.chip_class >= GFX9 && info->num_outputs) { unsigned itemsize_dw = es->selector->esgs_itemsize / 4; lds_base = LLVMBuildMul(gallivm->builder, ac_get_thread_id(&ctx->ac), LLVMConstInt(ctx->i32, itemsize_dw, 0), ""); } for (i = 0; i < info->num_outputs; i++) { LLVMValueRef *out_ptr = ctx->outputs[i]; int param; if (info->output_semantic_name[i] == TGSI_SEMANTIC_VIEWPORT_INDEX || info->output_semantic_name[i] == TGSI_SEMANTIC_LAYER) continue; param = si_shader_io_get_unique_index(info->output_semantic_name[i], info->output_semantic_index[i]); for (chan = 0; chan < 4; chan++) { LLVMValueRef out_val = LLVMBuildLoad(gallivm->builder, out_ptr[chan], ""); out_val = LLVMBuildBitCast(gallivm->builder, out_val, ctx->i32, ""); /* GFX9 has the ESGS ring in LDS. */ if (ctx->screen->b.chip_class >= GFX9) { lds_store(bld_base, param * 4 + chan, lds_base, out_val); continue; } ac_build_buffer_store_dword(&ctx->ac, ctx->esgs_ring, out_val, 1, NULL, soffset, (4 * param + chan) * 4, 1, 1, true, true); } } if (ctx->screen->b.chip_class >= GFX9) si_set_es_return_value_for_gs(ctx); } static LLVMValueRef si_get_gs_wave_id(struct si_shader_context *ctx) { if (ctx->screen->b.chip_class >= GFX9) return unpack_param(ctx, ctx->param_merged_wave_info, 16, 8); else return LLVMGetParam(ctx->main_fn, ctx->param_gs_wave_id); } static void si_llvm_emit_gs_epilogue(struct lp_build_tgsi_context *bld_base) { struct si_shader_context *ctx = si_shader_context(bld_base); ac_build_sendmsg(&ctx->ac, AC_SENDMSG_GS_OP_NOP | AC_SENDMSG_GS_DONE, si_get_gs_wave_id(ctx)); } static void si_llvm_emit_vs_epilogue(struct lp_build_tgsi_context *bld_base) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; struct tgsi_shader_info *info = &ctx->shader->selector->info; struct si_shader_output_values *outputs = NULL; int i,j; assert(!ctx->shader->is_gs_copy_shader); outputs = MALLOC((info->num_outputs + 1) * sizeof(outputs[0])); /* Vertex color clamping. * * This uses a state constant loaded in a user data SGPR and * an IF statement is added that clamps all colors if the constant * is true. */ if (ctx->type == PIPE_SHADER_VERTEX) { struct lp_build_if_state if_ctx; LLVMValueRef cond = NULL; LLVMValueRef addr, val; for (i = 0; i < info->num_outputs; i++) { if (info->output_semantic_name[i] != TGSI_SEMANTIC_COLOR && info->output_semantic_name[i] != TGSI_SEMANTIC_BCOLOR) continue; /* We've found a color. */ if (!cond) { /* The state is in the first bit of the user SGPR. */ cond = LLVMGetParam(ctx->main_fn, ctx->param_vs_state_bits); cond = LLVMBuildTrunc(gallivm->builder, cond, ctx->i1, ""); lp_build_if(&if_ctx, gallivm, cond); } for (j = 0; j < 4; j++) { addr = ctx->outputs[i][j]; val = LLVMBuildLoad(gallivm->builder, addr, ""); val = ac_build_clamp(&ctx->ac, val); LLVMBuildStore(gallivm->builder, val, addr); } } if (cond) lp_build_endif(&if_ctx); } for (i = 0; i < info->num_outputs; i++) { outputs[i].semantic_name = info->output_semantic_name[i]; outputs[i].semantic_index = info->output_semantic_index[i]; for (j = 0; j < 4; j++) { outputs[i].values[j] = LLVMBuildLoad(gallivm->builder, ctx->outputs[i][j], ""); outputs[i].vertex_stream[j] = (info->output_streams[i] >> (2 * j)) & 3; } } if (ctx->shader->selector->so.num_outputs) si_llvm_emit_streamout(ctx, outputs, i, 0); /* Export PrimitiveID. */ if (ctx->shader->key.mono.u.vs_export_prim_id) { outputs[i].semantic_name = TGSI_SEMANTIC_PRIMID; outputs[i].semantic_index = 0; outputs[i].values[0] = bitcast(bld_base, TGSI_TYPE_FLOAT, get_primitive_id(bld_base, 0)); for (j = 1; j < 4; j++) outputs[i].values[j] = LLVMConstReal(ctx->f32, 0); memset(outputs[i].vertex_stream, 0, sizeof(outputs[i].vertex_stream)); i++; } si_llvm_export_vs(bld_base, outputs, i); FREE(outputs); } struct si_ps_exports { unsigned num; struct ac_export_args args[10]; }; unsigned si_get_spi_shader_z_format(bool writes_z, bool writes_stencil, bool writes_samplemask) { if (writes_z) { /* Z needs 32 bits. */ if (writes_samplemask) return V_028710_SPI_SHADER_32_ABGR; else if (writes_stencil) return V_028710_SPI_SHADER_32_GR; else return V_028710_SPI_SHADER_32_R; } else if (writes_stencil || writes_samplemask) { /* Both stencil and sample mask need only 16 bits. */ return V_028710_SPI_SHADER_UINT16_ABGR; } else { return V_028710_SPI_SHADER_ZERO; } } static void si_export_mrt_z(struct lp_build_tgsi_context *bld_base, LLVMValueRef depth, LLVMValueRef stencil, LLVMValueRef samplemask, struct si_ps_exports *exp) { struct si_shader_context *ctx = si_shader_context(bld_base); struct lp_build_context *base = &bld_base->base; struct ac_export_args args; unsigned mask = 0; unsigned format = si_get_spi_shader_z_format(depth != NULL, stencil != NULL, samplemask != NULL); assert(depth || stencil || samplemask); args.valid_mask = 1; /* whether the EXEC mask is valid */ args.done = 1; /* DONE bit */ /* Specify the target we are exporting */ args.target = V_008DFC_SQ_EXP_MRTZ; args.compr = 0; /* COMP flag */ args.out[0] = base->undef; /* R, depth */ args.out[1] = base->undef; /* G, stencil test value[0:7], stencil op value[8:15] */ args.out[2] = base->undef; /* B, sample mask */ args.out[3] = base->undef; /* A, alpha to mask */ if (format == V_028710_SPI_SHADER_UINT16_ABGR) { assert(!depth); args.compr = 1; /* COMPR flag */ if (stencil) { /* Stencil should be in X[23:16]. */ stencil = bitcast(bld_base, TGSI_TYPE_UNSIGNED, stencil); stencil = LLVMBuildShl(ctx->gallivm.builder, stencil, LLVMConstInt(ctx->i32, 16, 0), ""); args.out[0] = bitcast(bld_base, TGSI_TYPE_FLOAT, stencil); mask |= 0x3; } if (samplemask) { /* SampleMask should be in Y[15:0]. */ args.out[1] = samplemask; mask |= 0xc; } } else { if (depth) { args.out[0] = depth; mask |= 0x1; } if (stencil) { args.out[1] = stencil; mask |= 0x2; } if (samplemask) { args.out[2] = samplemask; mask |= 0x4; } } /* SI (except OLAND and HAINAN) has a bug that it only looks * at the X writemask component. */ if (ctx->screen->b.chip_class == SI && ctx->screen->b.family != CHIP_OLAND && ctx->screen->b.family != CHIP_HAINAN) mask |= 0x1; /* Specify which components to enable */ args.enabled_channels = mask; memcpy(&exp->args[exp->num++], &args, sizeof(args)); } static void si_export_mrt_color(struct lp_build_tgsi_context *bld_base, LLVMValueRef *color, unsigned index, unsigned samplemask_param, bool is_last, struct si_ps_exports *exp) { struct si_shader_context *ctx = si_shader_context(bld_base); struct lp_build_context *base = &bld_base->base; int i; /* Clamp color */ if (ctx->shader->key.part.ps.epilog.clamp_color) for (i = 0; i < 4; i++) color[i] = ac_build_clamp(&ctx->ac, color[i]); /* Alpha to one */ if (ctx->shader->key.part.ps.epilog.alpha_to_one) color[3] = base->one; /* Alpha test */ if (index == 0 && ctx->shader->key.part.ps.epilog.alpha_func != PIPE_FUNC_ALWAYS) si_alpha_test(bld_base, color[3]); /* Line & polygon smoothing */ if (ctx->shader->key.part.ps.epilog.poly_line_smoothing) color[3] = si_scale_alpha_by_sample_mask(bld_base, color[3], samplemask_param); /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */ if (ctx->shader->key.part.ps.epilog.last_cbuf > 0) { struct ac_export_args args[8]; int c, last = -1; /* Get the export arguments, also find out what the last one is. */ for (c = 0; c <= ctx->shader->key.part.ps.epilog.last_cbuf; c++) { si_llvm_init_export_args(bld_base, color, V_008DFC_SQ_EXP_MRT + c, &args[c]); if (args[c].enabled_channels) last = c; } /* Emit all exports. */ for (c = 0; c <= ctx->shader->key.part.ps.epilog.last_cbuf; c++) { if (is_last && last == c) { args[c].valid_mask = 1; /* whether the EXEC mask is valid */ args[c].done = 1; /* DONE bit */ } else if (!args[c].enabled_channels) continue; /* unnecessary NULL export */ memcpy(&exp->args[exp->num++], &args[c], sizeof(args[c])); } } else { struct ac_export_args args; /* Export */ si_llvm_init_export_args(bld_base, color, V_008DFC_SQ_EXP_MRT + index, &args); if (is_last) { args.valid_mask = 1; /* whether the EXEC mask is valid */ args.done = 1; /* DONE bit */ } else if (!args.enabled_channels) return; /* unnecessary NULL export */ memcpy(&exp->args[exp->num++], &args, sizeof(args)); } } static void si_emit_ps_exports(struct si_shader_context *ctx, struct si_ps_exports *exp) { for (unsigned i = 0; i < exp->num; i++) ac_build_export(&ctx->ac, &exp->args[i]); } static void si_export_null(struct lp_build_tgsi_context *bld_base) { struct si_shader_context *ctx = si_shader_context(bld_base); struct lp_build_context *base = &bld_base->base; struct ac_export_args args; args.enabled_channels = 0x0; /* enabled channels */ args.valid_mask = 1; /* whether the EXEC mask is valid */ args.done = 1; /* DONE bit */ args.target = V_008DFC_SQ_EXP_NULL; args.compr = 0; /* COMPR flag (0 = 32-bit export) */ args.out[0] = base->undef; /* R */ args.out[1] = base->undef; /* G */ args.out[2] = base->undef; /* B */ args.out[3] = base->undef; /* A */ ac_build_export(&ctx->ac, &args); } /** * Return PS outputs in this order: * * v[0:3] = color0.xyzw * v[4:7] = color1.xyzw * ... * vN+0 = Depth * vN+1 = Stencil * vN+2 = SampleMask * vN+3 = SampleMaskIn (used for OpenGL smoothing) * * The alpha-ref SGPR is returned via its original location. */ static void si_llvm_return_fs_outputs(struct lp_build_tgsi_context *bld_base) { struct si_shader_context *ctx = si_shader_context(bld_base); struct si_shader *shader = ctx->shader; struct tgsi_shader_info *info = &shader->selector->info; LLVMBuilderRef builder = ctx->gallivm.builder; unsigned i, j, first_vgpr, vgpr; LLVMValueRef color[8][4] = {}; LLVMValueRef depth = NULL, stencil = NULL, samplemask = NULL; LLVMValueRef ret; if (ctx->postponed_kill) ac_build_kill(&ctx->ac, LLVMBuildLoad(builder, ctx->postponed_kill, "")); /* Read the output values. */ for (i = 0; i < info->num_outputs; i++) { unsigned semantic_name = info->output_semantic_name[i]; unsigned semantic_index = info->output_semantic_index[i]; switch (semantic_name) { case TGSI_SEMANTIC_COLOR: assert(semantic_index < 8); for (j = 0; j < 4; j++) { LLVMValueRef ptr = ctx->outputs[i][j]; LLVMValueRef result = LLVMBuildLoad(builder, ptr, ""); color[semantic_index][j] = result; } break; case TGSI_SEMANTIC_POSITION: depth = LLVMBuildLoad(builder, ctx->outputs[i][2], ""); break; case TGSI_SEMANTIC_STENCIL: stencil = LLVMBuildLoad(builder, ctx->outputs[i][1], ""); break; case TGSI_SEMANTIC_SAMPLEMASK: samplemask = LLVMBuildLoad(builder, ctx->outputs[i][0], ""); break; default: fprintf(stderr, "Warning: SI unhandled fs output type:%d\n", semantic_name); } } /* Fill the return structure. */ ret = ctx->return_value; /* Set SGPRs. */ ret = LLVMBuildInsertValue(builder, ret, bitcast(bld_base, TGSI_TYPE_SIGNED, LLVMGetParam(ctx->main_fn, SI_PARAM_ALPHA_REF)), SI_SGPR_ALPHA_REF, ""); /* Set VGPRs */ first_vgpr = vgpr = SI_SGPR_ALPHA_REF + 1; for (i = 0; i < ARRAY_SIZE(color); i++) { if (!color[i][0]) continue; for (j = 0; j < 4; j++) ret = LLVMBuildInsertValue(builder, ret, color[i][j], vgpr++, ""); } if (depth) ret = LLVMBuildInsertValue(builder, ret, depth, vgpr++, ""); if (stencil) ret = LLVMBuildInsertValue(builder, ret, stencil, vgpr++, ""); if (samplemask) ret = LLVMBuildInsertValue(builder, ret, samplemask, vgpr++, ""); /* Add the input sample mask for smoothing at the end. */ if (vgpr < first_vgpr + PS_EPILOG_SAMPLEMASK_MIN_LOC) vgpr = first_vgpr + PS_EPILOG_SAMPLEMASK_MIN_LOC; ret = LLVMBuildInsertValue(builder, ret, LLVMGetParam(ctx->main_fn, SI_PARAM_SAMPLE_COVERAGE), vgpr++, ""); ctx->return_value = ret; } /* Prevent optimizations (at least of memory accesses) across the current * point in the program by emitting empty inline assembly that is marked as * having side effects. * * Optionally, a value can be passed through the inline assembly to prevent * LLVM from hoisting calls to ReadNone functions. */ static void emit_optimization_barrier(struct si_shader_context *ctx, LLVMValueRef *pvgpr) { static int counter = 0; LLVMBuilderRef builder = ctx->gallivm.builder; char code[16]; snprintf(code, sizeof(code), "; %d", p_atomic_inc_return(&counter)); if (!pvgpr) { LLVMTypeRef ftype = LLVMFunctionType(ctx->voidt, NULL, 0, false); LLVMValueRef inlineasm = LLVMConstInlineAsm(ftype, code, "", true, false); LLVMBuildCall(builder, inlineasm, NULL, 0, ""); } else { LLVMTypeRef ftype = LLVMFunctionType(ctx->i32, &ctx->i32, 1, false); LLVMValueRef inlineasm = LLVMConstInlineAsm(ftype, code, "=v,0", true, false); LLVMValueRef vgpr = *pvgpr; LLVMTypeRef vgpr_type = LLVMTypeOf(vgpr); unsigned vgpr_size = llvm_get_type_size(vgpr_type); LLVMValueRef vgpr0; assert(vgpr_size % 4 == 0); vgpr = LLVMBuildBitCast(builder, vgpr, LLVMVectorType(ctx->i32, vgpr_size / 4), ""); vgpr0 = LLVMBuildExtractElement(builder, vgpr, ctx->i32_0, ""); vgpr0 = LLVMBuildCall(builder, inlineasm, &vgpr0, 1, ""); vgpr = LLVMBuildInsertElement(builder, vgpr, vgpr0, ctx->i32_0, ""); vgpr = LLVMBuildBitCast(builder, vgpr, vgpr_type, ""); *pvgpr = vgpr; } } void si_emit_waitcnt(struct si_shader_context *ctx, unsigned simm16) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMBuilderRef builder = gallivm->builder; LLVMValueRef args[1] = { LLVMConstInt(ctx->i32, simm16, 0) }; lp_build_intrinsic(builder, "llvm.amdgcn.s.waitcnt", ctx->voidt, args, 1, 0); } static void membar_emit( const struct lp_build_tgsi_action *action, struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { struct si_shader_context *ctx = si_shader_context(bld_base); LLVMValueRef src0 = lp_build_emit_fetch(bld_base, emit_data->inst, 0, 0); unsigned flags = LLVMConstIntGetZExtValue(src0); unsigned waitcnt = NOOP_WAITCNT; if (flags & TGSI_MEMBAR_THREAD_GROUP) waitcnt &= VM_CNT & LGKM_CNT; if (flags & (TGSI_MEMBAR_ATOMIC_BUFFER | TGSI_MEMBAR_SHADER_BUFFER | TGSI_MEMBAR_SHADER_IMAGE)) waitcnt &= VM_CNT; if (flags & TGSI_MEMBAR_SHARED) waitcnt &= LGKM_CNT; if (waitcnt != NOOP_WAITCNT) si_emit_waitcnt(ctx, waitcnt); } static void clock_emit( const struct lp_build_tgsi_action *action, struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef tmp; tmp = lp_build_intrinsic(gallivm->builder, "llvm.readcyclecounter", ctx->i64, NULL, 0, 0); tmp = LLVMBuildBitCast(gallivm->builder, tmp, ctx->v2i32, ""); emit_data->output[0] = LLVMBuildExtractElement(gallivm->builder, tmp, ctx->i32_0, ""); emit_data->output[1] = LLVMBuildExtractElement(gallivm->builder, tmp, ctx->i32_1, ""); } LLVMTypeRef si_const_array(LLVMTypeRef elem_type, int num_elements) { return LLVMPointerType(LLVMArrayType(elem_type, num_elements), CONST_ADDR_SPACE); } static void si_llvm_emit_ddxy( const struct lp_build_tgsi_action *action, struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; unsigned opcode = emit_data->info->opcode; LLVMValueRef val; int idx; unsigned mask; if (opcode == TGSI_OPCODE_DDX_FINE) mask = AC_TID_MASK_LEFT; else if (opcode == TGSI_OPCODE_DDY_FINE) mask = AC_TID_MASK_TOP; else mask = AC_TID_MASK_TOP_LEFT; /* for DDX we want to next X pixel, DDY next Y pixel. */ idx = (opcode == TGSI_OPCODE_DDX || opcode == TGSI_OPCODE_DDX_FINE) ? 1 : 2; val = LLVMBuildBitCast(gallivm->builder, emit_data->args[0], ctx->i32, ""); val = ac_build_ddxy(&ctx->ac, ctx->screen->has_ds_bpermute, mask, idx, ctx->lds, val); emit_data->output[emit_data->chan] = val; } /* * this takes an I,J coordinate pair, * and works out the X and Y derivatives. * it returns DDX(I), DDX(J), DDY(I), DDY(J). */ static LLVMValueRef si_llvm_emit_ddxy_interp( struct lp_build_tgsi_context *bld_base, LLVMValueRef interp_ij) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef result[4], a; unsigned i; for (i = 0; i < 2; i++) { a = LLVMBuildExtractElement(gallivm->builder, interp_ij, LLVMConstInt(ctx->i32, i, 0), ""); result[i] = lp_build_emit_llvm_unary(bld_base, TGSI_OPCODE_DDX, a); result[2+i] = lp_build_emit_llvm_unary(bld_base, TGSI_OPCODE_DDY, a); } return lp_build_gather_values(gallivm, result, 4); } static void interp_fetch_args( struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; const struct tgsi_full_instruction *inst = emit_data->inst; if (inst->Instruction.Opcode == TGSI_OPCODE_INTERP_OFFSET) { /* offset is in second src, first two channels */ emit_data->args[0] = lp_build_emit_fetch(bld_base, emit_data->inst, 1, TGSI_CHAN_X); emit_data->args[1] = lp_build_emit_fetch(bld_base, emit_data->inst, 1, TGSI_CHAN_Y); emit_data->arg_count = 2; } else if (inst->Instruction.Opcode == TGSI_OPCODE_INTERP_SAMPLE) { LLVMValueRef sample_position; LLVMValueRef sample_id; LLVMValueRef halfval = LLVMConstReal(ctx->f32, 0.5f); /* fetch sample ID, then fetch its sample position, * and place into first two channels. */ sample_id = lp_build_emit_fetch(bld_base, emit_data->inst, 1, TGSI_CHAN_X); sample_id = LLVMBuildBitCast(gallivm->builder, sample_id, ctx->i32, ""); sample_position = load_sample_position(ctx, sample_id); emit_data->args[0] = LLVMBuildExtractElement(gallivm->builder, sample_position, ctx->i32_0, ""); emit_data->args[0] = LLVMBuildFSub(gallivm->builder, emit_data->args[0], halfval, ""); emit_data->args[1] = LLVMBuildExtractElement(gallivm->builder, sample_position, ctx->i32_1, ""); emit_data->args[1] = LLVMBuildFSub(gallivm->builder, emit_data->args[1], halfval, ""); emit_data->arg_count = 2; } } static void build_interp_intrinsic(const struct lp_build_tgsi_action *action, struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { struct si_shader_context *ctx = si_shader_context(bld_base); struct si_shader *shader = ctx->shader; struct gallivm_state *gallivm = &ctx->gallivm; const struct tgsi_shader_info *info = &shader->selector->info; LLVMValueRef interp_param; const struct tgsi_full_instruction *inst = emit_data->inst; const struct tgsi_full_src_register *input = &inst->Src[0]; int input_base, input_array_size; int chan; int i; LLVMValueRef params = LLVMGetParam(ctx->main_fn, SI_PARAM_PRIM_MASK); LLVMValueRef array_idx; int interp_param_idx; unsigned interp; unsigned location; assert(input->Register.File == TGSI_FILE_INPUT); if (input->Register.Indirect) { unsigned array_id = input->Indirect.ArrayID; if (array_id) { input_base = info->input_array_first[array_id]; input_array_size = info->input_array_last[array_id] - input_base + 1; } else { input_base = inst->Src[0].Register.Index; input_array_size = info->num_inputs - input_base; } array_idx = get_indirect_index(ctx, &input->Indirect, input->Register.Index - input_base); } else { input_base = inst->Src[0].Register.Index; input_array_size = 1; array_idx = ctx->i32_0; } interp = shader->selector->info.input_interpolate[input_base]; if (inst->Instruction.Opcode == TGSI_OPCODE_INTERP_OFFSET || inst->Instruction.Opcode == TGSI_OPCODE_INTERP_SAMPLE) location = TGSI_INTERPOLATE_LOC_CENTER; else location = TGSI_INTERPOLATE_LOC_CENTROID; interp_param_idx = lookup_interp_param_index(interp, location); if (interp_param_idx == -1) return; else if (interp_param_idx) interp_param = LLVMGetParam(ctx->main_fn, interp_param_idx); else interp_param = NULL; if (inst->Instruction.Opcode == TGSI_OPCODE_INTERP_OFFSET || inst->Instruction.Opcode == TGSI_OPCODE_INTERP_SAMPLE) { LLVMValueRef ij_out[2]; LLVMValueRef ddxy_out = si_llvm_emit_ddxy_interp(bld_base, interp_param); /* * take the I then J parameters, and the DDX/Y for it, and * calculate the IJ inputs for the interpolator. * temp1 = ddx * offset/sample.x + I; * interp_param.I = ddy * offset/sample.y + temp1; * temp1 = ddx * offset/sample.x + J; * interp_param.J = ddy * offset/sample.y + temp1; */ for (i = 0; i < 2; i++) { LLVMValueRef ix_ll = LLVMConstInt(ctx->i32, i, 0); LLVMValueRef iy_ll = LLVMConstInt(ctx->i32, i + 2, 0); LLVMValueRef ddx_el = LLVMBuildExtractElement(gallivm->builder, ddxy_out, ix_ll, ""); LLVMValueRef ddy_el = LLVMBuildExtractElement(gallivm->builder, ddxy_out, iy_ll, ""); LLVMValueRef interp_el = LLVMBuildExtractElement(gallivm->builder, interp_param, ix_ll, ""); LLVMValueRef temp1, temp2; interp_el = LLVMBuildBitCast(gallivm->builder, interp_el, ctx->f32, ""); temp1 = LLVMBuildFMul(gallivm->builder, ddx_el, emit_data->args[0], ""); temp1 = LLVMBuildFAdd(gallivm->builder, temp1, interp_el, ""); temp2 = LLVMBuildFMul(gallivm->builder, ddy_el, emit_data->args[1], ""); ij_out[i] = LLVMBuildFAdd(gallivm->builder, temp2, temp1, ""); } interp_param = lp_build_gather_values(gallivm, ij_out, 2); } if (interp_param) { interp_param = LLVMBuildBitCast(gallivm->builder, interp_param, LLVMVectorType(ctx->f32, 2), ""); } for (chan = 0; chan < 4; chan++) { LLVMValueRef llvm_chan; LLVMValueRef gather = LLVMGetUndef(LLVMVectorType(ctx->f32, input_array_size)); unsigned schan; schan = tgsi_util_get_full_src_register_swizzle(&inst->Src[0], chan); llvm_chan = LLVMConstInt(ctx->i32, schan, 0); for (unsigned i = 0; i < input_array_size; ++i) { LLVMValueRef attr_number = LLVMConstInt(ctx->i32, input_base + i, false); LLVMValueRef v; if (interp_param) { interp_param = LLVMBuildBitCast(gallivm->builder, interp_param, LLVMVectorType(ctx->f32, 2), ""); LLVMValueRef i = LLVMBuildExtractElement( gallivm->builder, interp_param, ctx->i32_0, ""); LLVMValueRef j = LLVMBuildExtractElement( gallivm->builder, interp_param, ctx->i32_1, ""); v = ac_build_fs_interp(&ctx->ac, llvm_chan, attr_number, params, i, j); } else { v = ac_build_fs_interp_mov(&ctx->ac, LLVMConstInt(ctx->i32, 2, 0), /* P0 */ llvm_chan, attr_number, params); } gather = LLVMBuildInsertElement(gallivm->builder, gather, v, LLVMConstInt(ctx->i32, i, false), ""); } emit_data->output[chan] = LLVMBuildExtractElement( gallivm->builder, gather, array_idx, ""); } } static LLVMValueRef si_emit_ballot(struct si_shader_context *ctx, LLVMValueRef value) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef args[3] = { value, ctx->i32_0, LLVMConstInt(ctx->i32, LLVMIntNE, 0) }; /* We currently have no other way to prevent LLVM from lifting the icmp * calls to a dominating basic block. */ emit_optimization_barrier(ctx, &args[0]); if (LLVMTypeOf(args[0]) != ctx->i32) args[0] = LLVMBuildBitCast(gallivm->builder, args[0], ctx->i32, ""); return lp_build_intrinsic(gallivm->builder, "llvm.amdgcn.icmp.i32", ctx->i64, args, 3, LP_FUNC_ATTR_NOUNWIND | LP_FUNC_ATTR_READNONE | LP_FUNC_ATTR_CONVERGENT); } static void vote_all_emit( const struct lp_build_tgsi_action *action, struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef active_set, vote_set; LLVMValueRef tmp; active_set = si_emit_ballot(ctx, ctx->i32_1); vote_set = si_emit_ballot(ctx, emit_data->args[0]); tmp = LLVMBuildICmp(gallivm->builder, LLVMIntEQ, vote_set, active_set, ""); emit_data->output[emit_data->chan] = LLVMBuildSExt(gallivm->builder, tmp, ctx->i32, ""); } static void vote_any_emit( const struct lp_build_tgsi_action *action, struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef vote_set; LLVMValueRef tmp; vote_set = si_emit_ballot(ctx, emit_data->args[0]); tmp = LLVMBuildICmp(gallivm->builder, LLVMIntNE, vote_set, LLVMConstInt(ctx->i64, 0, 0), ""); emit_data->output[emit_data->chan] = LLVMBuildSExt(gallivm->builder, tmp, ctx->i32, ""); } static void vote_eq_emit( const struct lp_build_tgsi_action *action, struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef active_set, vote_set; LLVMValueRef all, none, tmp; active_set = si_emit_ballot(ctx, ctx->i32_1); vote_set = si_emit_ballot(ctx, emit_data->args[0]); all = LLVMBuildICmp(gallivm->builder, LLVMIntEQ, vote_set, active_set, ""); none = LLVMBuildICmp(gallivm->builder, LLVMIntEQ, vote_set, LLVMConstInt(ctx->i64, 0, 0), ""); tmp = LLVMBuildOr(gallivm->builder, all, none, ""); emit_data->output[emit_data->chan] = LLVMBuildSExt(gallivm->builder, tmp, ctx->i32, ""); } static void ballot_emit( const struct lp_build_tgsi_action *action, struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { struct si_shader_context *ctx = si_shader_context(bld_base); LLVMBuilderRef builder = ctx->gallivm.builder; LLVMValueRef tmp; tmp = lp_build_emit_fetch(bld_base, emit_data->inst, 0, TGSI_CHAN_X); tmp = si_emit_ballot(ctx, tmp); tmp = LLVMBuildBitCast(builder, tmp, ctx->v2i32, ""); emit_data->output[0] = LLVMBuildExtractElement(builder, tmp, ctx->i32_0, ""); emit_data->output[1] = LLVMBuildExtractElement(builder, tmp, ctx->i32_1, ""); } static void read_invoc_fetch_args( struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { emit_data->args[0] = lp_build_emit_fetch(bld_base, emit_data->inst, 0, emit_data->src_chan); /* Always read the source invocation (= lane) from the X channel. */ emit_data->args[1] = lp_build_emit_fetch(bld_base, emit_data->inst, 1, TGSI_CHAN_X); emit_data->arg_count = 2; } static void read_lane_emit( const struct lp_build_tgsi_action *action, struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { struct si_shader_context *ctx = si_shader_context(bld_base); LLVMBuilderRef builder = ctx->gallivm.builder; /* We currently have no other way to prevent LLVM from lifting the icmp * calls to a dominating basic block. */ emit_optimization_barrier(ctx, &emit_data->args[0]); for (unsigned i = 0; i < emit_data->arg_count; ++i) { emit_data->args[i] = LLVMBuildBitCast(builder, emit_data->args[i], ctx->i32, ""); } emit_data->output[emit_data->chan] = ac_build_intrinsic(&ctx->ac, action->intr_name, ctx->i32, emit_data->args, emit_data->arg_count, AC_FUNC_ATTR_READNONE | AC_FUNC_ATTR_CONVERGENT); } static unsigned si_llvm_get_stream(struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { struct si_shader_context *ctx = si_shader_context(bld_base); struct tgsi_src_register src0 = emit_data->inst->Src[0].Register; LLVMValueRef imm; unsigned stream; assert(src0.File == TGSI_FILE_IMMEDIATE); imm = ctx->imms[src0.Index * TGSI_NUM_CHANNELS + src0.SwizzleX]; stream = LLVMConstIntGetZExtValue(imm) & 0x3; return stream; } /* Emit one vertex from the geometry shader */ static void si_llvm_emit_vertex( const struct lp_build_tgsi_action *action, struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { struct si_shader_context *ctx = si_shader_context(bld_base); struct lp_build_context *uint = &bld_base->uint_bld; struct si_shader *shader = ctx->shader; struct tgsi_shader_info *info = &shader->selector->info; struct gallivm_state *gallivm = &ctx->gallivm; struct lp_build_if_state if_state; LLVMValueRef soffset = LLVMGetParam(ctx->main_fn, ctx->param_gs2vs_offset); LLVMValueRef gs_next_vertex; LLVMValueRef can_emit, kill; unsigned chan, offset; int i; unsigned stream; stream = si_llvm_get_stream(bld_base, emit_data); /* Write vertex attribute values to GSVS ring */ gs_next_vertex = LLVMBuildLoad(gallivm->builder, ctx->gs_next_vertex[stream], ""); /* If this thread has already emitted the declared maximum number of * vertices, skip the write: excessive vertex emissions are not * supposed to have any effect. * * If the shader has no writes to memory, kill it instead. This skips * further memory loads and may allow LLVM to skip to the end * altogether. */ can_emit = LLVMBuildICmp(gallivm->builder, LLVMIntULT, gs_next_vertex, LLVMConstInt(ctx->i32, shader->selector->gs_max_out_vertices, 0), ""); bool use_kill = !info->writes_memory; if (use_kill) { kill = lp_build_select(&bld_base->base, can_emit, LLVMConstReal(ctx->f32, 1.0f), LLVMConstReal(ctx->f32, -1.0f)); ac_build_kill(&ctx->ac, kill); } else { lp_build_if(&if_state, gallivm, can_emit); } offset = 0; for (i = 0; i < info->num_outputs; i++) { LLVMValueRef *out_ptr = ctx->outputs[i]; for (chan = 0; chan < 4; chan++) { if (!(info->output_usagemask[i] & (1 << chan)) || ((info->output_streams[i] >> (2 * chan)) & 3) != stream) continue; LLVMValueRef out_val = LLVMBuildLoad(gallivm->builder, out_ptr[chan], ""); LLVMValueRef voffset = LLVMConstInt(ctx->i32, offset * shader->selector->gs_max_out_vertices, 0); offset++; voffset = lp_build_add(uint, voffset, gs_next_vertex); voffset = lp_build_mul_imm(uint, voffset, 4); out_val = LLVMBuildBitCast(gallivm->builder, out_val, ctx->i32, ""); ac_build_buffer_store_dword(&ctx->ac, ctx->gsvs_ring[stream], out_val, 1, voffset, soffset, 0, 1, 1, true, true); } } gs_next_vertex = lp_build_add(uint, gs_next_vertex, ctx->i32_1); LLVMBuildStore(gallivm->builder, gs_next_vertex, ctx->gs_next_vertex[stream]); /* Signal vertex emission */ ac_build_sendmsg(&ctx->ac, AC_SENDMSG_GS_OP_EMIT | AC_SENDMSG_GS | (stream << 8), si_get_gs_wave_id(ctx)); if (!use_kill) lp_build_endif(&if_state); } /* Cut one primitive from the geometry shader */ static void si_llvm_emit_primitive( const struct lp_build_tgsi_action *action, struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { struct si_shader_context *ctx = si_shader_context(bld_base); unsigned stream; /* Signal primitive cut */ stream = si_llvm_get_stream(bld_base, emit_data); ac_build_sendmsg(&ctx->ac, AC_SENDMSG_GS_OP_CUT | AC_SENDMSG_GS | (stream << 8), si_get_gs_wave_id(ctx)); } static void si_llvm_emit_barrier(const struct lp_build_tgsi_action *action, struct lp_build_tgsi_context *bld_base, struct lp_build_emit_data *emit_data) { struct si_shader_context *ctx = si_shader_context(bld_base); struct gallivm_state *gallivm = &ctx->gallivm; /* SI only (thanks to a hw bug workaround): * The real barrier instruction isn’t needed, because an entire patch * always fits into a single wave. */ if (ctx->screen->b.chip_class == SI && ctx->type == PIPE_SHADER_TESS_CTRL) { si_emit_waitcnt(ctx, LGKM_CNT & VM_CNT); return; } lp_build_intrinsic(gallivm->builder, "llvm.amdgcn.s.barrier", ctx->voidt, NULL, 0, LP_FUNC_ATTR_CONVERGENT); } static const struct lp_build_tgsi_action interp_action = { .fetch_args = interp_fetch_args, .emit = build_interp_intrinsic, }; static void si_create_function(struct si_shader_context *ctx, const char *name, LLVMTypeRef *returns, unsigned num_returns, LLVMTypeRef *params, unsigned num_params, int last_sgpr, unsigned max_workgroup_size) { int i; si_llvm_create_func(ctx, name, returns, num_returns, params, num_params); ctx->return_value = LLVMGetUndef(ctx->return_type); for (i = 0; i <= last_sgpr; ++i) { LLVMValueRef P = LLVMGetParam(ctx->main_fn, i); /* The combination of: * - ByVal * - dereferenceable * - invariant.load * allows the optimization passes to move loads and reduces * SGPR spilling significantly. */ if (LLVMGetTypeKind(LLVMTypeOf(P)) == LLVMPointerTypeKind) { lp_add_function_attr(ctx->main_fn, i + 1, LP_FUNC_ATTR_BYVAL); lp_add_function_attr(ctx->main_fn, i + 1, LP_FUNC_ATTR_NOALIAS); ac_add_attr_dereferenceable(P, UINT64_MAX); } else lp_add_function_attr(ctx->main_fn, i + 1, LP_FUNC_ATTR_INREG); } if (max_workgroup_size) { si_llvm_add_attribute(ctx->main_fn, "amdgpu-max-work-group-size", max_workgroup_size); } LLVMAddTargetDependentFunctionAttr(ctx->main_fn, "no-signed-zeros-fp-math", "true"); if (ctx->screen->b.debug_flags & DBG_UNSAFE_MATH) { /* These were copied from some LLVM test. */ LLVMAddTargetDependentFunctionAttr(ctx->main_fn, "less-precise-fpmad", "true"); LLVMAddTargetDependentFunctionAttr(ctx->main_fn, "no-infs-fp-math", "true"); LLVMAddTargetDependentFunctionAttr(ctx->main_fn, "no-nans-fp-math", "true"); LLVMAddTargetDependentFunctionAttr(ctx->main_fn, "unsafe-fp-math", "true"); } } static void declare_streamout_params(struct si_shader_context *ctx, struct pipe_stream_output_info *so, LLVMTypeRef *params, LLVMTypeRef i32, unsigned *num_params) { int i; /* Streamout SGPRs. */ if (so->num_outputs) { if (ctx->type != PIPE_SHADER_TESS_EVAL) params[ctx->param_streamout_config = (*num_params)++] = i32; else ctx->param_streamout_config = *num_params - 1; params[ctx->param_streamout_write_index = (*num_params)++] = i32; } /* A streamout buffer offset is loaded if the stride is non-zero. */ for (i = 0; i < 4; i++) { if (!so->stride[i]) continue; params[ctx->param_streamout_offset[i] = (*num_params)++] = i32; } } static unsigned llvm_get_type_size(LLVMTypeRef type) { LLVMTypeKind kind = LLVMGetTypeKind(type); switch (kind) { case LLVMIntegerTypeKind: return LLVMGetIntTypeWidth(type) / 8; case LLVMFloatTypeKind: return 4; case LLVMPointerTypeKind: return 8; case LLVMVectorTypeKind: return LLVMGetVectorSize(type) * llvm_get_type_size(LLVMGetElementType(type)); case LLVMArrayTypeKind: return LLVMGetArrayLength(type) * llvm_get_type_size(LLVMGetElementType(type)); default: assert(0); return 0; } } static void declare_lds_as_pointer(struct si_shader_context *ctx) { struct gallivm_state *gallivm = &ctx->gallivm; unsigned lds_size = ctx->screen->b.chip_class >= CIK ? 65536 : 32768; ctx->lds = LLVMBuildIntToPtr(gallivm->builder, ctx->i32_0, LLVMPointerType(LLVMArrayType(ctx->i32, lds_size / 4), LOCAL_ADDR_SPACE), "lds"); } static unsigned si_get_max_workgroup_size(const struct si_shader *shader) { switch (shader->selector->type) { case PIPE_SHADER_TESS_CTRL: /* Return this so that LLVM doesn't remove s_barrier * instructions on chips where we use s_barrier. */ return shader->selector->screen->b.chip_class >= CIK ? 128 : 64; case PIPE_SHADER_GEOMETRY: return shader->selector->screen->b.chip_class >= GFX9 ? 128 : 64; case PIPE_SHADER_COMPUTE: break; /* see below */ default: return 0; } const unsigned *properties = shader->selector->info.properties; unsigned max_work_group_size = properties[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH] * properties[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT] * properties[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH]; if (!max_work_group_size) { /* This is a variable group size compute shader, * compile it for the maximum possible group size. */ max_work_group_size = SI_MAX_VARIABLE_THREADS_PER_BLOCK; } return max_work_group_size; } static void declare_per_stage_desc_pointers(struct si_shader_context *ctx, LLVMTypeRef *params, unsigned *num_params, bool assign_params) { params[(*num_params)++] = si_const_array(ctx->v4i32, SI_NUM_SHADER_BUFFERS + SI_NUM_CONST_BUFFERS); params[(*num_params)++] = si_const_array(ctx->v8i32, SI_NUM_IMAGES + SI_NUM_SAMPLERS * 2); if (assign_params) { ctx->param_const_and_shader_buffers = *num_params - 2; ctx->param_samplers_and_images = *num_params - 1; } } static void declare_default_desc_pointers(struct si_shader_context *ctx, LLVMTypeRef *params, unsigned *num_params) { params[ctx->param_rw_buffers = (*num_params)++] = si_const_array(ctx->v4i32, SI_NUM_RW_BUFFERS); declare_per_stage_desc_pointers(ctx, params, num_params, true); } static void declare_vs_specific_input_sgprs(struct si_shader_context *ctx, LLVMTypeRef *params, unsigned *num_params) { params[ctx->param_vertex_buffers = (*num_params)++] = si_const_array(ctx->v4i32, SI_NUM_VERTEX_BUFFERS); params[ctx->param_base_vertex = (*num_params)++] = ctx->i32; params[ctx->param_start_instance = (*num_params)++] = ctx->i32; params[ctx->param_draw_id = (*num_params)++] = ctx->i32; params[ctx->param_vs_state_bits = (*num_params)++] = ctx->i32; } static void declare_vs_input_vgprs(struct si_shader_context *ctx, LLVMTypeRef *params, unsigned *num_params, unsigned *num_prolog_vgprs) { struct si_shader *shader = ctx->shader; params[ctx->param_vertex_id = (*num_params)++] = ctx->i32; if (shader->key.as_ls) { params[ctx->param_rel_auto_id = (*num_params)++] = ctx->i32; params[ctx->param_instance_id = (*num_params)++] = ctx->i32; } else { params[ctx->param_instance_id = (*num_params)++] = ctx->i32; params[ctx->param_vs_prim_id = (*num_params)++] = ctx->i32; } params[(*num_params)++] = ctx->i32; /* unused */ if (!shader->is_gs_copy_shader) { /* Vertex load indices. */ ctx->param_vertex_index0 = (*num_params); for (unsigned i = 0; i < shader->selector->info.num_inputs; i++) params[(*num_params)++] = ctx->i32; *num_prolog_vgprs += shader->selector->info.num_inputs; } } static void declare_tes_input_vgprs(struct si_shader_context *ctx, LLVMTypeRef *params, unsigned *num_params) { params[ctx->param_tes_u = (*num_params)++] = ctx->f32; params[ctx->param_tes_v = (*num_params)++] = ctx->f32; params[ctx->param_tes_rel_patch_id = (*num_params)++] = ctx->i32; params[ctx->param_tes_patch_id = (*num_params)++] = ctx->i32; } enum { /* Convenient merged shader definitions. */ SI_SHADER_MERGED_VERTEX_TESSCTRL = PIPE_SHADER_TYPES, SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY, }; static void create_function(struct si_shader_context *ctx) { struct lp_build_tgsi_context *bld_base = &ctx->bld_base; struct gallivm_state *gallivm = &ctx->gallivm; struct si_shader *shader = ctx->shader; LLVMTypeRef params[100]; /* just make it large enough */ LLVMTypeRef returns[16+32*4]; unsigned i, last_sgpr, num_params = 0, num_return_sgprs; unsigned num_returns = 0; unsigned num_prolog_vgprs = 0; unsigned type = ctx->type; /* Set MERGED shaders. */ if (ctx->screen->b.chip_class >= GFX9) { if (shader->key.as_ls || type == PIPE_SHADER_TESS_CTRL) type = SI_SHADER_MERGED_VERTEX_TESSCTRL; /* LS or HS */ else if (shader->key.as_es || type == PIPE_SHADER_GEOMETRY) type = SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY; } LLVMTypeRef v3i32 = LLVMVectorType(ctx->i32, 3); switch (type) { case PIPE_SHADER_VERTEX: declare_default_desc_pointers(ctx, params, &num_params); declare_vs_specific_input_sgprs(ctx, params, &num_params); if (shader->key.as_es) { params[ctx->param_es2gs_offset = num_params++] = ctx->i32; } else if (shader->key.as_ls) { /* no extra parameters */ } else { if (shader->is_gs_copy_shader) num_params = ctx->param_rw_buffers + 1; /* The locations of the other parameters are assigned dynamically. */ declare_streamout_params(ctx, &shader->selector->so, params, ctx->i32, &num_params); } last_sgpr = num_params-1; /* VGPRs */ declare_vs_input_vgprs(ctx, params, &num_params, &num_prolog_vgprs); break; case PIPE_SHADER_TESS_CTRL: /* SI-CI-VI */ declare_default_desc_pointers(ctx, params, &num_params); params[ctx->param_tcs_offchip_layout = num_params++] = ctx->i32; params[ctx->param_tcs_out_lds_offsets = num_params++] = ctx->i32; params[ctx->param_tcs_out_lds_layout = num_params++] = ctx->i32; params[ctx->param_vs_state_bits = num_params++] = ctx->i32; params[ctx->param_tcs_offchip_addr_base64k = num_params++] = ctx->i32; params[ctx->param_tcs_factor_addr_base64k = num_params++] = ctx->i32; params[ctx->param_tcs_offchip_offset = num_params++] = ctx->i32; params[ctx->param_tcs_factor_offset = num_params++] = ctx->i32; last_sgpr = num_params - 1; /* VGPRs */ params[ctx->param_tcs_patch_id = num_params++] = ctx->i32; params[ctx->param_tcs_rel_ids = num_params++] = ctx->i32; /* param_tcs_offchip_offset and param_tcs_factor_offset are * placed after the user SGPRs. */ for (i = 0; i < GFX6_TCS_NUM_USER_SGPR + 2; i++) returns[num_returns++] = ctx->i32; /* SGPRs */ for (i = 0; i < 3; i++) returns[num_returns++] = ctx->f32; /* VGPRs */ break; case SI_SHADER_MERGED_VERTEX_TESSCTRL: /* Merged stages have 8 system SGPRs at the beginning. */ params[ctx->param_rw_buffers = num_params++] = /* SPI_SHADER_USER_DATA_ADDR_LO_HS */ si_const_array(ctx->v4i32, SI_NUM_RW_BUFFERS); params[ctx->param_tcs_offchip_offset = num_params++] = ctx->i32; params[ctx->param_merged_wave_info = num_params++] = ctx->i32; params[ctx->param_tcs_factor_offset = num_params++] = ctx->i32; params[ctx->param_merged_scratch_offset = num_params++] = ctx->i32; params[num_params++] = ctx->i32; /* unused */ params[num_params++] = ctx->i32; /* unused */ params[num_params++] = ctx->i32; /* unused */ params[num_params++] = ctx->i32; /* unused */ declare_per_stage_desc_pointers(ctx, params, &num_params, ctx->type == PIPE_SHADER_VERTEX); declare_vs_specific_input_sgprs(ctx, params, &num_params); params[ctx->param_tcs_offchip_layout = num_params++] = ctx->i32; params[ctx->param_tcs_out_lds_offsets = num_params++] = ctx->i32; params[ctx->param_tcs_out_lds_layout = num_params++] = ctx->i32; params[ctx->param_tcs_offchip_addr_base64k = num_params++] = ctx->i32; params[ctx->param_tcs_factor_addr_base64k = num_params++] = ctx->i32; params[num_params++] = ctx->i32; /* unused */ declare_per_stage_desc_pointers(ctx, params, &num_params, ctx->type == PIPE_SHADER_TESS_CTRL); last_sgpr = num_params - 1; /* VGPRs (first TCS, then VS) */ params[ctx->param_tcs_patch_id = num_params++] = ctx->i32; params[ctx->param_tcs_rel_ids = num_params++] = ctx->i32; if (ctx->type == PIPE_SHADER_VERTEX) { declare_vs_input_vgprs(ctx, params, &num_params, &num_prolog_vgprs); /* LS return values are inputs to the TCS main shader part. */ for (i = 0; i < 8 + GFX9_TCS_NUM_USER_SGPR; i++) returns[num_returns++] = ctx->i32; /* SGPRs */ for (i = 0; i < 2; i++) returns[num_returns++] = ctx->f32; /* VGPRs */ } else { /* TCS return values are inputs to the TCS epilog. * * param_tcs_offchip_offset, param_tcs_factor_offset, * param_tcs_offchip_layout, and param_rw_buffers * should be passed to the epilog. */ for (i = 0; i <= 8 + GFX9_SGPR_TCS_FACTOR_ADDR_BASE64K; i++) returns[num_returns++] = ctx->i32; /* SGPRs */ for (i = 0; i < 3; i++) returns[num_returns++] = ctx->f32; /* VGPRs */ } break; case SI_SHADER_MERGED_VERTEX_OR_TESSEVAL_GEOMETRY: /* Merged stages have 8 system SGPRs at the beginning. */ params[ctx->param_rw_buffers = num_params++] = /* SPI_SHADER_USER_DATA_ADDR_LO_GS */ si_const_array(ctx->v4i32, SI_NUM_RW_BUFFERS); params[ctx->param_gs2vs_offset = num_params++] = ctx->i32; params[ctx->param_merged_wave_info = num_params++] = ctx->i32; params[ctx->param_tcs_offchip_offset = num_params++] = ctx->i32; params[ctx->param_merged_scratch_offset = num_params++] = ctx->i32; params[num_params++] = ctx->i32; /* unused (SPI_SHADER_PGM_LO/HI_GS << 8) */ params[num_params++] = ctx->i32; /* unused (SPI_SHADER_PGM_LO/HI_GS >> 24) */ params[num_params++] = ctx->i32; /* unused */ params[num_params++] = ctx->i32; /* unused */ declare_per_stage_desc_pointers(ctx, params, &num_params, (ctx->type == PIPE_SHADER_VERTEX || ctx->type == PIPE_SHADER_TESS_EVAL)); if (ctx->type == PIPE_SHADER_VERTEX) { declare_vs_specific_input_sgprs(ctx, params, &num_params); } else { /* TESS_EVAL (and also GEOMETRY): * Declare as many input SGPRs as the VS has. */ params[ctx->param_tcs_offchip_layout = num_params++] = ctx->i32; params[ctx->param_tcs_offchip_addr_base64k = num_params++] = ctx->i32; params[num_params++] = ctx->i32; /* unused */ params[num_params++] = ctx->i32; /* unused */ params[num_params++] = ctx->i32; /* unused */ params[ctx->param_vs_state_bits = num_params++] = ctx->i32; /* unused */ } declare_per_stage_desc_pointers(ctx, params, &num_params, ctx->type == PIPE_SHADER_GEOMETRY); last_sgpr = num_params - 1; /* VGPRs (first GS, then VS/TES) */ params[ctx->param_gs_vtx01_offset = num_params++] = ctx->i32; params[ctx->param_gs_vtx23_offset = num_params++] = ctx->i32; params[ctx->param_gs_prim_id = num_params++] = ctx->i32; params[ctx->param_gs_instance_id = num_params++] = ctx->i32; params[ctx->param_gs_vtx45_offset = num_params++] = ctx->i32; if (ctx->type == PIPE_SHADER_VERTEX) { declare_vs_input_vgprs(ctx, params, &num_params, &num_prolog_vgprs); } else if (ctx->type == PIPE_SHADER_TESS_EVAL) { declare_tes_input_vgprs(ctx, params, &num_params); } if (ctx->type == PIPE_SHADER_VERTEX || ctx->type == PIPE_SHADER_TESS_EVAL) { /* ES return values are inputs to GS. */ for (i = 0; i < 8 + GFX9_GS_NUM_USER_SGPR; i++) returns[num_returns++] = ctx->i32; /* SGPRs */ for (i = 0; i < 5; i++) returns[num_returns++] = ctx->f32; /* VGPRs */ } break; case PIPE_SHADER_TESS_EVAL: declare_default_desc_pointers(ctx, params, &num_params); params[ctx->param_tcs_offchip_layout = num_params++] = ctx->i32; params[ctx->param_tcs_offchip_addr_base64k = num_params++] = ctx->i32; if (shader->key.as_es) { params[ctx->param_tcs_offchip_offset = num_params++] = ctx->i32; params[num_params++] = ctx->i32; params[ctx->param_es2gs_offset = num_params++] = ctx->i32; } else { params[num_params++] = ctx->i32; declare_streamout_params(ctx, &shader->selector->so, params, ctx->i32, &num_params); params[ctx->param_tcs_offchip_offset = num_params++] = ctx->i32; } last_sgpr = num_params - 1; /* VGPRs */ declare_tes_input_vgprs(ctx, params, &num_params); break; case PIPE_SHADER_GEOMETRY: declare_default_desc_pointers(ctx, params, &num_params); params[ctx->param_gs2vs_offset = num_params++] = ctx->i32; params[ctx->param_gs_wave_id = num_params++] = ctx->i32; last_sgpr = num_params - 1; /* VGPRs */ params[ctx->param_gs_vtx0_offset = num_params++] = ctx->i32; params[ctx->param_gs_vtx1_offset = num_params++] = ctx->i32; params[ctx->param_gs_prim_id = num_params++] = ctx->i32; params[ctx->param_gs_vtx2_offset = num_params++] = ctx->i32; params[ctx->param_gs_vtx3_offset = num_params++] = ctx->i32; params[ctx->param_gs_vtx4_offset = num_params++] = ctx->i32; params[ctx->param_gs_vtx5_offset = num_params++] = ctx->i32; params[ctx->param_gs_instance_id = num_params++] = ctx->i32; break; case PIPE_SHADER_FRAGMENT: declare_default_desc_pointers(ctx, params, &num_params); params[SI_PARAM_ALPHA_REF] = ctx->f32; params[SI_PARAM_PRIM_MASK] = ctx->i32; last_sgpr = SI_PARAM_PRIM_MASK; params[SI_PARAM_PERSP_SAMPLE] = ctx->v2i32; params[SI_PARAM_PERSP_CENTER] = ctx->v2i32; params[SI_PARAM_PERSP_CENTROID] = ctx->v2i32; params[SI_PARAM_PERSP_PULL_MODEL] = v3i32; params[SI_PARAM_LINEAR_SAMPLE] = ctx->v2i32; params[SI_PARAM_LINEAR_CENTER] = ctx->v2i32; params[SI_PARAM_LINEAR_CENTROID] = ctx->v2i32; params[SI_PARAM_LINE_STIPPLE_TEX] = ctx->f32; params[SI_PARAM_POS_X_FLOAT] = ctx->f32; params[SI_PARAM_POS_Y_FLOAT] = ctx->f32; params[SI_PARAM_POS_Z_FLOAT] = ctx->f32; params[SI_PARAM_POS_W_FLOAT] = ctx->f32; params[SI_PARAM_FRONT_FACE] = ctx->i32; shader->info.face_vgpr_index = 20; params[SI_PARAM_ANCILLARY] = ctx->i32; params[SI_PARAM_SAMPLE_COVERAGE] = ctx->f32; params[SI_PARAM_POS_FIXED_PT] = ctx->i32; num_params = SI_PARAM_POS_FIXED_PT+1; /* Color inputs from the prolog. */ if (shader->selector->info.colors_read) { unsigned num_color_elements = util_bitcount(shader->selector->info.colors_read); assert(num_params + num_color_elements <= ARRAY_SIZE(params)); for (i = 0; i < num_color_elements; i++) params[num_params++] = ctx->f32; num_prolog_vgprs += num_color_elements; } /* Outputs for the epilog. */ num_return_sgprs = SI_SGPR_ALPHA_REF + 1; num_returns = num_return_sgprs + util_bitcount(shader->selector->info.colors_written) * 4 + shader->selector->info.writes_z + shader->selector->info.writes_stencil + shader->selector->info.writes_samplemask + 1 /* SampleMaskIn */; num_returns = MAX2(num_returns, num_return_sgprs + PS_EPILOG_SAMPLEMASK_MIN_LOC + 1); for (i = 0; i < num_return_sgprs; i++) returns[i] = ctx->i32; for (; i < num_returns; i++) returns[i] = ctx->f32; break; case PIPE_SHADER_COMPUTE: declare_default_desc_pointers(ctx, params, &num_params); if (shader->selector->info.uses_grid_size) params[ctx->param_grid_size = num_params++] = v3i32; if (shader->selector->info.uses_block_size) params[ctx->param_block_size = num_params++] = v3i32; for (i = 0; i < 3; i++) { ctx->param_block_id[i] = -1; if (shader->selector->info.uses_block_id[i]) params[ctx->param_block_id[i] = num_params++] = ctx->i32; } last_sgpr = num_params - 1; params[ctx->param_thread_id = num_params++] = v3i32; break; default: assert(0 && "unimplemented shader"); return; } assert(num_params <= ARRAY_SIZE(params)); si_create_function(ctx, "main", returns, num_returns, params, num_params, last_sgpr, si_get_max_workgroup_size(shader)); /* Reserve register locations for VGPR inputs the PS prolog may need. */ if (ctx->type == PIPE_SHADER_FRAGMENT && ctx->separate_prolog) { si_llvm_add_attribute(ctx->main_fn, "InitialPSInputAddr", S_0286D0_PERSP_SAMPLE_ENA(1) | S_0286D0_PERSP_CENTER_ENA(1) | S_0286D0_PERSP_CENTROID_ENA(1) | S_0286D0_LINEAR_SAMPLE_ENA(1) | S_0286D0_LINEAR_CENTER_ENA(1) | S_0286D0_LINEAR_CENTROID_ENA(1) | S_0286D0_FRONT_FACE_ENA(1) | S_0286D0_POS_FIXED_PT_ENA(1)); } shader->info.num_input_sgprs = 0; shader->info.num_input_vgprs = 0; for (i = 0; i <= last_sgpr; ++i) shader->info.num_input_sgprs += llvm_get_type_size(params[i]) / 4; for (; i < num_params; ++i) shader->info.num_input_vgprs += llvm_get_type_size(params[i]) / 4; assert(shader->info.num_input_vgprs >= num_prolog_vgprs); shader->info.num_input_vgprs -= num_prolog_vgprs; if (!ctx->screen->has_ds_bpermute && bld_base->info && (bld_base->info->opcode_count[TGSI_OPCODE_DDX] > 0 || bld_base->info->opcode_count[TGSI_OPCODE_DDY] > 0 || bld_base->info->opcode_count[TGSI_OPCODE_DDX_FINE] > 0 || bld_base->info->opcode_count[TGSI_OPCODE_DDY_FINE] > 0 || bld_base->info->opcode_count[TGSI_OPCODE_INTERP_OFFSET] > 0 || bld_base->info->opcode_count[TGSI_OPCODE_INTERP_SAMPLE] > 0)) ctx->lds = LLVMAddGlobalInAddressSpace(gallivm->module, LLVMArrayType(ctx->i32, 64), "ddxy_lds", LOCAL_ADDR_SPACE); if (shader->key.as_ls || ctx->type == PIPE_SHADER_TESS_CTRL || /* GFX9 has the ESGS ring buffer in LDS. */ (ctx->screen->b.chip_class >= GFX9 && (shader->key.as_es || ctx->type == PIPE_SHADER_GEOMETRY))) declare_lds_as_pointer(ctx); } /** * Load ESGS and GSVS ring buffer resource descriptors and save the variables * for later use. */ static void preload_ring_buffers(struct si_shader_context *ctx) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMBuilderRef builder = gallivm->builder; LLVMValueRef buf_ptr = LLVMGetParam(ctx->main_fn, ctx->param_rw_buffers); if (ctx->screen->b.chip_class <= VI && (ctx->shader->key.as_es || ctx->type == PIPE_SHADER_GEOMETRY)) { unsigned ring = ctx->type == PIPE_SHADER_GEOMETRY ? SI_GS_RING_ESGS : SI_ES_RING_ESGS; LLVMValueRef offset = LLVMConstInt(ctx->i32, ring, 0); ctx->esgs_ring = ac_build_indexed_load_const(&ctx->ac, buf_ptr, offset); } if (ctx->shader->is_gs_copy_shader) { LLVMValueRef offset = LLVMConstInt(ctx->i32, SI_RING_GSVS, 0); ctx->gsvs_ring[0] = ac_build_indexed_load_const(&ctx->ac, buf_ptr, offset); } else if (ctx->type == PIPE_SHADER_GEOMETRY) { const struct si_shader_selector *sel = ctx->shader->selector; LLVMValueRef offset = LLVMConstInt(ctx->i32, SI_RING_GSVS, 0); LLVMValueRef base_ring; base_ring = ac_build_indexed_load_const(&ctx->ac, buf_ptr, offset); /* The conceptual layout of the GSVS ring is * v0c0 .. vLv0 v0c1 .. vLc1 .. * but the real memory layout is swizzled across * threads: * t0v0c0 .. t15v0c0 t0v1c0 .. t15v1c0 ... t15vLcL * t16v0c0 .. * Override the buffer descriptor accordingly. */ LLVMTypeRef v2i64 = LLVMVectorType(ctx->i64, 2); uint64_t stream_offset = 0; for (unsigned stream = 0; stream < 4; ++stream) { unsigned num_components; unsigned stride; unsigned num_records; LLVMValueRef ring, tmp; num_components = sel->info.num_stream_output_components[stream]; if (!num_components) continue; stride = 4 * num_components * sel->gs_max_out_vertices; /* Limit on the stride field for <= CIK. */ assert(stride < (1 << 14)); num_records = 64; ring = LLVMBuildBitCast(builder, base_ring, v2i64, ""); tmp = LLVMBuildExtractElement(builder, ring, ctx->i32_0, ""); tmp = LLVMBuildAdd(builder, tmp, LLVMConstInt(ctx->i64, stream_offset, 0), ""); stream_offset += stride * 64; ring = LLVMBuildInsertElement(builder, ring, tmp, ctx->i32_0, ""); ring = LLVMBuildBitCast(builder, ring, ctx->v4i32, ""); tmp = LLVMBuildExtractElement(builder, ring, ctx->i32_1, ""); tmp = LLVMBuildOr(builder, tmp, LLVMConstInt(ctx->i32, S_008F04_STRIDE(stride) | S_008F04_SWIZZLE_ENABLE(1), 0), ""); ring = LLVMBuildInsertElement(builder, ring, tmp, ctx->i32_1, ""); ring = LLVMBuildInsertElement(builder, ring, LLVMConstInt(ctx->i32, num_records, 0), LLVMConstInt(ctx->i32, 2, 0), ""); ring = LLVMBuildInsertElement(builder, ring, LLVMConstInt(ctx->i32, S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X) | S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y) | S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z) | S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W) | S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT) | S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32) | S_008F0C_ELEMENT_SIZE(1) | /* element_size = 4 (bytes) */ S_008F0C_INDEX_STRIDE(1) | /* index_stride = 16 (elements) */ S_008F0C_ADD_TID_ENABLE(1), 0), LLVMConstInt(ctx->i32, 3, 0), ""); ctx->gsvs_ring[stream] = ring; } } } static void si_llvm_emit_polygon_stipple(struct si_shader_context *ctx, LLVMValueRef param_rw_buffers, unsigned param_pos_fixed_pt) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMBuilderRef builder = gallivm->builder; LLVMValueRef slot, desc, offset, row, bit, address[2]; /* Use the fixed-point gl_FragCoord input. * Since the stipple pattern is 32x32 and it repeats, just get 5 bits * per coordinate to get the repeating effect. */ address[0] = unpack_param(ctx, param_pos_fixed_pt, 0, 5); address[1] = unpack_param(ctx, param_pos_fixed_pt, 16, 5); /* Load the buffer descriptor. */ slot = LLVMConstInt(ctx->i32, SI_PS_CONST_POLY_STIPPLE, 0); desc = ac_build_indexed_load_const(&ctx->ac, param_rw_buffers, slot); /* The stipple pattern is 32x32, each row has 32 bits. */ offset = LLVMBuildMul(builder, address[1], LLVMConstInt(ctx->i32, 4, 0), ""); row = buffer_load_const(ctx, desc, offset); row = LLVMBuildBitCast(builder, row, ctx->i32, ""); bit = LLVMBuildLShr(builder, row, address[0], ""); bit = LLVMBuildTrunc(builder, bit, ctx->i1, ""); /* The intrinsic kills the thread if arg < 0. */ bit = LLVMBuildSelect(builder, bit, LLVMConstReal(ctx->f32, 0), LLVMConstReal(ctx->f32, -1), ""); ac_build_kill(&ctx->ac, bit); } void si_shader_binary_read_config(struct ac_shader_binary *binary, struct si_shader_config *conf, unsigned symbol_offset) { unsigned i; const unsigned char *config = ac_shader_binary_config_start(binary, symbol_offset); bool really_needs_scratch = false; /* LLVM adds SGPR spills to the scratch size. * Find out if we really need the scratch buffer. */ for (i = 0; i < binary->reloc_count; i++) { const struct ac_shader_reloc *reloc = &binary->relocs[i]; if (!strcmp(scratch_rsrc_dword0_symbol, reloc->name) || !strcmp(scratch_rsrc_dword1_symbol, reloc->name)) { really_needs_scratch = true; break; } } /* XXX: We may be able to emit some of these values directly rather than * extracting fields to be emitted later. */ for (i = 0; i < binary->config_size_per_symbol; i+= 8) { unsigned reg = util_le32_to_cpu(*(uint32_t*)(config + i)); unsigned value = util_le32_to_cpu(*(uint32_t*)(config + i + 4)); switch (reg) { case R_00B028_SPI_SHADER_PGM_RSRC1_PS: case R_00B128_SPI_SHADER_PGM_RSRC1_VS: case R_00B228_SPI_SHADER_PGM_RSRC1_GS: case R_00B428_SPI_SHADER_PGM_RSRC1_HS: case R_00B848_COMPUTE_PGM_RSRC1: conf->num_sgprs = MAX2(conf->num_sgprs, (G_00B028_SGPRS(value) + 1) * 8); conf->num_vgprs = MAX2(conf->num_vgprs, (G_00B028_VGPRS(value) + 1) * 4); conf->float_mode = G_00B028_FLOAT_MODE(value); conf->rsrc1 = value; break; case R_00B02C_SPI_SHADER_PGM_RSRC2_PS: conf->lds_size = MAX2(conf->lds_size, G_00B02C_EXTRA_LDS_SIZE(value)); break; case R_00B84C_COMPUTE_PGM_RSRC2: conf->lds_size = MAX2(conf->lds_size, G_00B84C_LDS_SIZE(value)); conf->rsrc2 = value; break; case R_0286CC_SPI_PS_INPUT_ENA: conf->spi_ps_input_ena = value; break; case R_0286D0_SPI_PS_INPUT_ADDR: conf->spi_ps_input_addr = value; break; case R_0286E8_SPI_TMPRING_SIZE: case R_00B860_COMPUTE_TMPRING_SIZE: /* WAVESIZE is in units of 256 dwords. */ if (really_needs_scratch) conf->scratch_bytes_per_wave = G_00B860_WAVESIZE(value) * 256 * 4; break; case 0x4: /* SPILLED_SGPRS */ conf->spilled_sgprs = value; break; case 0x8: /* SPILLED_VGPRS */ conf->spilled_vgprs = value; break; default: { static bool printed; if (!printed) { fprintf(stderr, "Warning: LLVM emitted unknown " "config register: 0x%x\n", reg); printed = true; } } break; } } if (!conf->spi_ps_input_addr) conf->spi_ps_input_addr = conf->spi_ps_input_ena; } void si_shader_apply_scratch_relocs(struct si_shader *shader, uint64_t scratch_va) { unsigned i; uint32_t scratch_rsrc_dword0 = scratch_va; uint32_t scratch_rsrc_dword1 = S_008F04_BASE_ADDRESS_HI(scratch_va >> 32); /* Enable scratch coalescing. */ scratch_rsrc_dword1 |= S_008F04_SWIZZLE_ENABLE(1); for (i = 0 ; i < shader->binary.reloc_count; i++) { const struct ac_shader_reloc *reloc = &shader->binary.relocs[i]; if (!strcmp(scratch_rsrc_dword0_symbol, reloc->name)) { util_memcpy_cpu_to_le32(shader->binary.code + reloc->offset, &scratch_rsrc_dword0, 4); } else if (!strcmp(scratch_rsrc_dword1_symbol, reloc->name)) { util_memcpy_cpu_to_le32(shader->binary.code + reloc->offset, &scratch_rsrc_dword1, 4); } } } static unsigned si_get_shader_binary_size(const struct si_shader *shader) { unsigned size = shader->binary.code_size; if (shader->prolog) size += shader->prolog->binary.code_size; if (shader->previous_stage) size += shader->previous_stage->binary.code_size; if (shader->prolog2) size += shader->prolog2->binary.code_size; if (shader->epilog) size += shader->epilog->binary.code_size; return size; } int si_shader_binary_upload(struct si_screen *sscreen, struct si_shader *shader) { const struct ac_shader_binary *prolog = shader->prolog ? &shader->prolog->binary : NULL; const struct ac_shader_binary *previous_stage = shader->previous_stage ? &shader->previous_stage->binary : NULL; const struct ac_shader_binary *prolog2 = shader->prolog2 ? &shader->prolog2->binary : NULL; const struct ac_shader_binary *epilog = shader->epilog ? &shader->epilog->binary : NULL; const struct ac_shader_binary *mainb = &shader->binary; unsigned bo_size = si_get_shader_binary_size(shader) + (!epilog ? mainb->rodata_size : 0); unsigned char *ptr; assert(!prolog || !prolog->rodata_size); assert(!previous_stage || !previous_stage->rodata_size); assert(!prolog2 || !prolog2->rodata_size); assert((!prolog && !previous_stage && !prolog2 && !epilog) || !mainb->rodata_size); assert(!epilog || !epilog->rodata_size); r600_resource_reference(&shader->bo, NULL); shader->bo = (struct r600_resource*) pipe_buffer_create(&sscreen->b.b, 0, PIPE_USAGE_IMMUTABLE, align(bo_size, SI_CPDMA_ALIGNMENT)); if (!shader->bo) return -ENOMEM; /* Upload. */ ptr = sscreen->b.ws->buffer_map(shader->bo->buf, NULL, PIPE_TRANSFER_READ_WRITE | PIPE_TRANSFER_UNSYNCHRONIZED); /* Don't use util_memcpy_cpu_to_le32. LLVM binaries are * endian-independent. */ if (prolog) { memcpy(ptr, prolog->code, prolog->code_size); ptr += prolog->code_size; } if (previous_stage) { memcpy(ptr, previous_stage->code, previous_stage->code_size); ptr += previous_stage->code_size; } if (prolog2) { memcpy(ptr, prolog2->code, prolog2->code_size); ptr += prolog2->code_size; } memcpy(ptr, mainb->code, mainb->code_size); ptr += mainb->code_size; if (epilog) memcpy(ptr, epilog->code, epilog->code_size); else if (mainb->rodata_size > 0) memcpy(ptr, mainb->rodata, mainb->rodata_size); sscreen->b.ws->buffer_unmap(shader->bo->buf); return 0; } static void si_shader_dump_disassembly(const struct ac_shader_binary *binary, struct pipe_debug_callback *debug, const char *name, FILE *file) { char *line, *p; unsigned i, count; if (binary->disasm_string) { fprintf(file, "Shader %s disassembly:\n", name); fprintf(file, "%s", binary->disasm_string); if (debug && debug->debug_message) { /* Very long debug messages are cut off, so send the * disassembly one line at a time. This causes more * overhead, but on the plus side it simplifies * parsing of resulting logs. */ pipe_debug_message(debug, SHADER_INFO, "Shader Disassembly Begin"); line = binary->disasm_string; while (*line) { p = util_strchrnul(line, '\n'); count = p - line; if (count) { pipe_debug_message(debug, SHADER_INFO, "%.*s", count, line); } if (!*p) break; line = p + 1; } pipe_debug_message(debug, SHADER_INFO, "Shader Disassembly End"); } } else { fprintf(file, "Shader %s binary:\n", name); for (i = 0; i < binary->code_size; i += 4) { fprintf(file, "@0x%x: %02x%02x%02x%02x\n", i, binary->code[i + 3], binary->code[i + 2], binary->code[i + 1], binary->code[i]); } } } static void si_shader_dump_stats(struct si_screen *sscreen, const struct si_shader *shader, struct pipe_debug_callback *debug, unsigned processor, FILE *file, bool check_debug_option) { const struct si_shader_config *conf = &shader->config; unsigned num_inputs = shader->selector ? shader->selector->info.num_inputs : 0; unsigned code_size = si_get_shader_binary_size(shader); unsigned lds_increment = sscreen->b.chip_class >= CIK ? 512 : 256; unsigned lds_per_wave = 0; unsigned max_simd_waves = 10; /* Compute LDS usage for PS. */ switch (processor) { case PIPE_SHADER_FRAGMENT: /* The minimum usage per wave is (num_inputs * 48). The maximum * usage is (num_inputs * 48 * 16). * We can get anything in between and it varies between waves. * * The 48 bytes per input for a single primitive is equal to * 4 bytes/component * 4 components/input * 3 points. * * Other stages don't know the size at compile time or don't * allocate LDS per wave, but instead they do it per thread group. */ lds_per_wave = conf->lds_size * lds_increment + align(num_inputs * 48, lds_increment); break; case PIPE_SHADER_COMPUTE: if (shader->selector) { unsigned max_workgroup_size = si_get_max_workgroup_size(shader); lds_per_wave = (conf->lds_size * lds_increment) / DIV_ROUND_UP(max_workgroup_size, 64); } break; } /* Compute the per-SIMD wave counts. */ if (conf->num_sgprs) { if (sscreen->b.chip_class >= VI) max_simd_waves = MIN2(max_simd_waves, 800 / conf->num_sgprs); else max_simd_waves = MIN2(max_simd_waves, 512 / conf->num_sgprs); } if (conf->num_vgprs) max_simd_waves = MIN2(max_simd_waves, 256 / conf->num_vgprs); /* LDS is 64KB per CU (4 SIMDs), which is 16KB per SIMD (usage above * 16KB makes some SIMDs unoccupied). */ if (lds_per_wave) max_simd_waves = MIN2(max_simd_waves, 16384 / lds_per_wave); if (!check_debug_option || r600_can_dump_shader(&sscreen->b, processor)) { if (processor == PIPE_SHADER_FRAGMENT) { fprintf(file, "*** SHADER CONFIG ***\n" "SPI_PS_INPUT_ADDR = 0x%04x\n" "SPI_PS_INPUT_ENA = 0x%04x\n", conf->spi_ps_input_addr, conf->spi_ps_input_ena); } fprintf(file, "*** SHADER STATS ***\n" "SGPRS: %d\n" "VGPRS: %d\n" "Spilled SGPRs: %d\n" "Spilled VGPRs: %d\n" "Private memory VGPRs: %d\n" "Code Size: %d bytes\n" "LDS: %d blocks\n" "Scratch: %d bytes per wave\n" "Max Waves: %d\n" "********************\n\n\n", conf->num_sgprs, conf->num_vgprs, conf->spilled_sgprs, conf->spilled_vgprs, conf->private_mem_vgprs, code_size, conf->lds_size, conf->scratch_bytes_per_wave, max_simd_waves); } pipe_debug_message(debug, SHADER_INFO, "Shader Stats: SGPRS: %d VGPRS: %d Code Size: %d " "LDS: %d Scratch: %d Max Waves: %d Spilled SGPRs: %d " "Spilled VGPRs: %d PrivMem VGPRs: %d", conf->num_sgprs, conf->num_vgprs, code_size, conf->lds_size, conf->scratch_bytes_per_wave, max_simd_waves, conf->spilled_sgprs, conf->spilled_vgprs, conf->private_mem_vgprs); } const char *si_get_shader_name(const struct si_shader *shader, unsigned processor) { switch (processor) { case PIPE_SHADER_VERTEX: if (shader->key.as_es) return "Vertex Shader as ES"; else if (shader->key.as_ls) return "Vertex Shader as LS"; else return "Vertex Shader as VS"; case PIPE_SHADER_TESS_CTRL: return "Tessellation Control Shader"; case PIPE_SHADER_TESS_EVAL: if (shader->key.as_es) return "Tessellation Evaluation Shader as ES"; else return "Tessellation Evaluation Shader as VS"; case PIPE_SHADER_GEOMETRY: if (shader->is_gs_copy_shader) return "GS Copy Shader as VS"; else return "Geometry Shader"; case PIPE_SHADER_FRAGMENT: return "Pixel Shader"; case PIPE_SHADER_COMPUTE: return "Compute Shader"; default: return "Unknown Shader"; } } void si_shader_dump(struct si_screen *sscreen, const struct si_shader *shader, struct pipe_debug_callback *debug, unsigned processor, FILE *file, bool check_debug_option) { if (!check_debug_option || r600_can_dump_shader(&sscreen->b, processor)) si_dump_shader_key(processor, shader, file); if (!check_debug_option && shader->binary.llvm_ir_string) { fprintf(file, "\n%s - main shader part - LLVM IR:\n\n", si_get_shader_name(shader, processor)); fprintf(file, "%s\n", shader->binary.llvm_ir_string); } if (!check_debug_option || (r600_can_dump_shader(&sscreen->b, processor) && !(sscreen->b.debug_flags & DBG_NO_ASM))) { fprintf(file, "\n%s:\n", si_get_shader_name(shader, processor)); if (shader->prolog) si_shader_dump_disassembly(&shader->prolog->binary, debug, "prolog", file); if (shader->previous_stage) si_shader_dump_disassembly(&shader->previous_stage->binary, debug, "previous stage", file); if (shader->prolog2) si_shader_dump_disassembly(&shader->prolog2->binary, debug, "prolog2", file); si_shader_dump_disassembly(&shader->binary, debug, "main", file); if (shader->epilog) si_shader_dump_disassembly(&shader->epilog->binary, debug, "epilog", file); fprintf(file, "\n"); } si_shader_dump_stats(sscreen, shader, debug, processor, file, check_debug_option); } static int si_compile_llvm(struct si_screen *sscreen, struct ac_shader_binary *binary, struct si_shader_config *conf, LLVMTargetMachineRef tm, LLVMModuleRef mod, struct pipe_debug_callback *debug, unsigned processor, const char *name) { int r = 0; unsigned count = p_atomic_inc_return(&sscreen->b.num_compilations); if (r600_can_dump_shader(&sscreen->b, processor)) { fprintf(stderr, "radeonsi: Compiling shader %d\n", count); if (!(sscreen->b.debug_flags & (DBG_NO_IR | DBG_PREOPT_IR))) { fprintf(stderr, "%s LLVM IR:\n\n", name); ac_dump_module(mod); fprintf(stderr, "\n"); } } if (sscreen->record_llvm_ir) { char *ir = LLVMPrintModuleToString(mod); binary->llvm_ir_string = strdup(ir); LLVMDisposeMessage(ir); } if (!si_replace_shader(count, binary)) { r = si_llvm_compile(mod, binary, tm, debug); if (r) return r; } si_shader_binary_read_config(binary, conf, 0); /* Enable 64-bit and 16-bit denormals, because there is no performance * cost. * * If denormals are enabled, all floating-point output modifiers are * ignored. * * Don't enable denormals for 32-bit floats, because: * - Floating-point output modifiers would be ignored by the hw. * - Some opcodes don't support denormals, such as v_mad_f32. We would * have to stop using those. * - SI & CI would be very slow. */ conf->float_mode |= V_00B028_FP_64_DENORMS; FREE(binary->config); FREE(binary->global_symbol_offsets); binary->config = NULL; binary->global_symbol_offsets = NULL; /* Some shaders can't have rodata because their binaries can be * concatenated. */ if (binary->rodata_size && (processor == PIPE_SHADER_VERTEX || processor == PIPE_SHADER_TESS_CTRL || processor == PIPE_SHADER_TESS_EVAL || processor == PIPE_SHADER_FRAGMENT)) { fprintf(stderr, "radeonsi: The shader can't have rodata."); return -EINVAL; } return r; } static void si_llvm_build_ret(struct si_shader_context *ctx, LLVMValueRef ret) { if (LLVMGetTypeKind(LLVMTypeOf(ret)) == LLVMVoidTypeKind) LLVMBuildRetVoid(ctx->gallivm.builder); else LLVMBuildRet(ctx->gallivm.builder, ret); } /* Generate code for the hardware VS shader stage to go with a geometry shader */ struct si_shader * si_generate_gs_copy_shader(struct si_screen *sscreen, LLVMTargetMachineRef tm, struct si_shader_selector *gs_selector, struct pipe_debug_callback *debug) { struct si_shader_context ctx; struct si_shader *shader; struct gallivm_state *gallivm = &ctx.gallivm; LLVMBuilderRef builder; struct lp_build_tgsi_context *bld_base = &ctx.bld_base; struct lp_build_context *uint = &bld_base->uint_bld; struct si_shader_output_values *outputs; struct tgsi_shader_info *gsinfo = &gs_selector->info; int i, r; outputs = MALLOC(gsinfo->num_outputs * sizeof(outputs[0])); if (!outputs) return NULL; shader = CALLOC_STRUCT(si_shader); if (!shader) { FREE(outputs); return NULL; } shader->selector = gs_selector; shader->is_gs_copy_shader = true; si_init_shader_ctx(&ctx, sscreen, tm); ctx.shader = shader; ctx.type = PIPE_SHADER_VERTEX; builder = gallivm->builder; create_function(&ctx); preload_ring_buffers(&ctx); LLVMValueRef voffset = lp_build_mul_imm(uint, LLVMGetParam(ctx.main_fn, ctx.param_vertex_id), 4); /* Fetch the vertex stream ID.*/ LLVMValueRef stream_id; if (gs_selector->so.num_outputs) stream_id = unpack_param(&ctx, ctx.param_streamout_config, 24, 2); else stream_id = ctx.i32_0; /* Fill in output information. */ for (i = 0; i < gsinfo->num_outputs; ++i) { outputs[i].semantic_name = gsinfo->output_semantic_name[i]; outputs[i].semantic_index = gsinfo->output_semantic_index[i]; for (int chan = 0; chan < 4; chan++) { outputs[i].vertex_stream[chan] = (gsinfo->output_streams[i] >> (2 * chan)) & 3; } } LLVMBasicBlockRef end_bb; LLVMValueRef switch_inst; end_bb = LLVMAppendBasicBlockInContext(gallivm->context, ctx.main_fn, "end"); switch_inst = LLVMBuildSwitch(builder, stream_id, end_bb, 4); for (int stream = 0; stream < 4; stream++) { LLVMBasicBlockRef bb; unsigned offset; if (!gsinfo->num_stream_output_components[stream]) continue; if (stream > 0 && !gs_selector->so.num_outputs) continue; bb = LLVMInsertBasicBlockInContext(gallivm->context, end_bb, "out"); LLVMAddCase(switch_inst, LLVMConstInt(ctx.i32, stream, 0), bb); LLVMPositionBuilderAtEnd(builder, bb); /* Fetch vertex data from GSVS ring */ offset = 0; for (i = 0; i < gsinfo->num_outputs; ++i) { for (unsigned chan = 0; chan < 4; chan++) { if (!(gsinfo->output_usagemask[i] & (1 << chan)) || outputs[i].vertex_stream[chan] != stream) { outputs[i].values[chan] = ctx.bld_base.base.undef; continue; } LLVMValueRef soffset = LLVMConstInt(ctx.i32, offset * gs_selector->gs_max_out_vertices * 16 * 4, 0); offset++; outputs[i].values[chan] = ac_build_buffer_load(&ctx.ac, ctx.gsvs_ring[0], 1, ctx.i32_0, voffset, soffset, 0, 1, 1, true, false); } } /* Streamout and exports. */ if (gs_selector->so.num_outputs) { si_llvm_emit_streamout(&ctx, outputs, gsinfo->num_outputs, stream); } if (stream == 0) si_llvm_export_vs(bld_base, outputs, gsinfo->num_outputs); LLVMBuildBr(builder, end_bb); } LLVMPositionBuilderAtEnd(builder, end_bb); LLVMBuildRetVoid(gallivm->builder); ctx.type = PIPE_SHADER_GEOMETRY; /* override for shader dumping */ si_llvm_optimize_module(&ctx); r = si_compile_llvm(sscreen, &ctx.shader->binary, &ctx.shader->config, ctx.tm, ctx.gallivm.module, debug, PIPE_SHADER_GEOMETRY, "GS Copy Shader"); if (!r) { if (r600_can_dump_shader(&sscreen->b, PIPE_SHADER_GEOMETRY)) fprintf(stderr, "GS Copy Shader:\n"); si_shader_dump(sscreen, ctx.shader, debug, PIPE_SHADER_GEOMETRY, stderr, true); r = si_shader_binary_upload(sscreen, ctx.shader); } si_llvm_dispose(&ctx); FREE(outputs); if (r != 0) { FREE(shader); shader = NULL; } return shader; } static void si_dump_shader_key_vs(const struct si_shader_key *key, const struct si_vs_prolog_bits *prolog, const char *prefix, FILE *f) { fprintf(f, " %s.instance_divisor_is_one = %u\n", prefix, prolog->instance_divisor_is_one); fprintf(f, " %s.instance_divisor_is_fetched = %u\n", prefix, prolog->instance_divisor_is_fetched); fprintf(f, " mono.vs.fix_fetch = {"); for (int i = 0; i < SI_MAX_ATTRIBS; i++) fprintf(f, !i ? "%u" : ", %u", key->mono.vs_fix_fetch[i]); fprintf(f, "}\n"); } static void si_dump_shader_key(unsigned processor, const struct si_shader *shader, FILE *f) { const struct si_shader_key *key = &shader->key; fprintf(f, "SHADER KEY\n"); switch (processor) { case PIPE_SHADER_VERTEX: si_dump_shader_key_vs(key, &key->part.vs.prolog, "part.vs.prolog", f); fprintf(f, " as_es = %u\n", key->as_es); fprintf(f, " as_ls = %u\n", key->as_ls); fprintf(f, " mono.u.vs_export_prim_id = %u\n", key->mono.u.vs_export_prim_id); break; case PIPE_SHADER_TESS_CTRL: if (shader->selector->screen->b.chip_class >= GFX9) { si_dump_shader_key_vs(key, &key->part.tcs.ls_prolog, "part.tcs.ls_prolog", f); } fprintf(f, " part.tcs.epilog.prim_mode = %u\n", key->part.tcs.epilog.prim_mode); fprintf(f, " mono.u.ff_tcs_inputs_to_copy = 0x%"PRIx64"\n", key->mono.u.ff_tcs_inputs_to_copy); break; case PIPE_SHADER_TESS_EVAL: fprintf(f, " as_es = %u\n", key->as_es); fprintf(f, " mono.u.vs_export_prim_id = %u\n", key->mono.u.vs_export_prim_id); break; case PIPE_SHADER_GEOMETRY: if (shader->is_gs_copy_shader) break; if (shader->selector->screen->b.chip_class >= GFX9 && key->part.gs.es->type == PIPE_SHADER_VERTEX) { si_dump_shader_key_vs(key, &key->part.gs.vs_prolog, "part.gs.vs_prolog", f); } fprintf(f, " part.gs.prolog.tri_strip_adj_fix = %u\n", key->part.gs.prolog.tri_strip_adj_fix); break; case PIPE_SHADER_COMPUTE: break; case PIPE_SHADER_FRAGMENT: fprintf(f, " part.ps.prolog.color_two_side = %u\n", key->part.ps.prolog.color_two_side); fprintf(f, " part.ps.prolog.flatshade_colors = %u\n", key->part.ps.prolog.flatshade_colors); fprintf(f, " part.ps.prolog.poly_stipple = %u\n", key->part.ps.prolog.poly_stipple); fprintf(f, " part.ps.prolog.force_persp_sample_interp = %u\n", key->part.ps.prolog.force_persp_sample_interp); fprintf(f, " part.ps.prolog.force_linear_sample_interp = %u\n", key->part.ps.prolog.force_linear_sample_interp); fprintf(f, " part.ps.prolog.force_persp_center_interp = %u\n", key->part.ps.prolog.force_persp_center_interp); fprintf(f, " part.ps.prolog.force_linear_center_interp = %u\n", key->part.ps.prolog.force_linear_center_interp); fprintf(f, " part.ps.prolog.bc_optimize_for_persp = %u\n", key->part.ps.prolog.bc_optimize_for_persp); fprintf(f, " part.ps.prolog.bc_optimize_for_linear = %u\n", key->part.ps.prolog.bc_optimize_for_linear); fprintf(f, " part.ps.epilog.spi_shader_col_format = 0x%x\n", key->part.ps.epilog.spi_shader_col_format); fprintf(f, " part.ps.epilog.color_is_int8 = 0x%X\n", key->part.ps.epilog.color_is_int8); fprintf(f, " part.ps.epilog.color_is_int10 = 0x%X\n", key->part.ps.epilog.color_is_int10); fprintf(f, " part.ps.epilog.last_cbuf = %u\n", key->part.ps.epilog.last_cbuf); fprintf(f, " part.ps.epilog.alpha_func = %u\n", key->part.ps.epilog.alpha_func); fprintf(f, " part.ps.epilog.alpha_to_one = %u\n", key->part.ps.epilog.alpha_to_one); fprintf(f, " part.ps.epilog.poly_line_smoothing = %u\n", key->part.ps.epilog.poly_line_smoothing); fprintf(f, " part.ps.epilog.clamp_color = %u\n", key->part.ps.epilog.clamp_color); break; default: assert(0); } if ((processor == PIPE_SHADER_GEOMETRY || processor == PIPE_SHADER_TESS_EVAL || processor == PIPE_SHADER_VERTEX) && !key->as_es && !key->as_ls) { fprintf(f, " opt.kill_outputs = 0x%"PRIx64"\n", key->opt.kill_outputs); fprintf(f, " opt.clip_disable = %u\n", key->opt.clip_disable); } } static void si_init_shader_ctx(struct si_shader_context *ctx, struct si_screen *sscreen, LLVMTargetMachineRef tm) { struct lp_build_tgsi_context *bld_base; si_llvm_context_init(ctx, sscreen, tm); bld_base = &ctx->bld_base; bld_base->emit_fetch_funcs[TGSI_FILE_CONSTANT] = fetch_constant; bld_base->op_actions[TGSI_OPCODE_INTERP_CENTROID] = interp_action; bld_base->op_actions[TGSI_OPCODE_INTERP_SAMPLE] = interp_action; bld_base->op_actions[TGSI_OPCODE_INTERP_OFFSET] = interp_action; bld_base->op_actions[TGSI_OPCODE_MEMBAR].emit = membar_emit; bld_base->op_actions[TGSI_OPCODE_CLOCK].emit = clock_emit; bld_base->op_actions[TGSI_OPCODE_DDX].emit = si_llvm_emit_ddxy; bld_base->op_actions[TGSI_OPCODE_DDY].emit = si_llvm_emit_ddxy; bld_base->op_actions[TGSI_OPCODE_DDX_FINE].emit = si_llvm_emit_ddxy; bld_base->op_actions[TGSI_OPCODE_DDY_FINE].emit = si_llvm_emit_ddxy; bld_base->op_actions[TGSI_OPCODE_VOTE_ALL].emit = vote_all_emit; bld_base->op_actions[TGSI_OPCODE_VOTE_ANY].emit = vote_any_emit; bld_base->op_actions[TGSI_OPCODE_VOTE_EQ].emit = vote_eq_emit; bld_base->op_actions[TGSI_OPCODE_BALLOT].emit = ballot_emit; bld_base->op_actions[TGSI_OPCODE_READ_FIRST].intr_name = "llvm.amdgcn.readfirstlane"; bld_base->op_actions[TGSI_OPCODE_READ_FIRST].emit = read_lane_emit; bld_base->op_actions[TGSI_OPCODE_READ_INVOC].intr_name = "llvm.amdgcn.readlane"; bld_base->op_actions[TGSI_OPCODE_READ_INVOC].fetch_args = read_invoc_fetch_args; bld_base->op_actions[TGSI_OPCODE_READ_INVOC].emit = read_lane_emit; bld_base->op_actions[TGSI_OPCODE_EMIT].emit = si_llvm_emit_vertex; bld_base->op_actions[TGSI_OPCODE_ENDPRIM].emit = si_llvm_emit_primitive; bld_base->op_actions[TGSI_OPCODE_BARRIER].emit = si_llvm_emit_barrier; } static void si_optimize_vs_outputs(struct si_shader_context *ctx) { struct si_shader *shader = ctx->shader; struct tgsi_shader_info *info = &shader->selector->info; if ((ctx->type != PIPE_SHADER_VERTEX && ctx->type != PIPE_SHADER_TESS_EVAL) || shader->key.as_ls || shader->key.as_es) return; ac_optimize_vs_outputs(&ctx->ac, ctx->main_fn, shader->info.vs_output_param_offset, info->num_outputs, &shader->info.nr_param_exports); } static void si_count_scratch_private_memory(struct si_shader_context *ctx) { ctx->shader->config.private_mem_vgprs = 0; /* Process all LLVM instructions. */ LLVMBasicBlockRef bb = LLVMGetFirstBasicBlock(ctx->main_fn); while (bb) { LLVMValueRef next = LLVMGetFirstInstruction(bb); while (next) { LLVMValueRef inst = next; next = LLVMGetNextInstruction(next); if (LLVMGetInstructionOpcode(inst) != LLVMAlloca) continue; LLVMTypeRef type = LLVMGetElementType(LLVMTypeOf(inst)); /* No idea why LLVM aligns allocas to 4 elements. */ unsigned alignment = LLVMGetAlignment(inst); unsigned dw_size = align(llvm_get_type_size(type) / 4, alignment); ctx->shader->config.private_mem_vgprs += dw_size; } bb = LLVMGetNextBasicBlock(bb); } } static void si_init_exec_full_mask(struct si_shader_context *ctx) { LLVMValueRef full_mask = LLVMConstInt(ctx->i64, ~0ull, 0); lp_build_intrinsic(ctx->gallivm.builder, "llvm.amdgcn.init.exec", ctx->voidt, &full_mask, 1, LP_FUNC_ATTR_CONVERGENT); } static void si_init_exec_from_input(struct si_shader_context *ctx, unsigned param, unsigned bitoffset) { LLVMValueRef args[] = { LLVMGetParam(ctx->main_fn, param), LLVMConstInt(ctx->i32, bitoffset, 0), }; lp_build_intrinsic(ctx->gallivm.builder, "llvm.amdgcn.init.exec.from.input", ctx->voidt, args, 2, LP_FUNC_ATTR_CONVERGENT); } static bool si_compile_tgsi_main(struct si_shader_context *ctx, bool is_monolithic) { struct si_shader *shader = ctx->shader; struct si_shader_selector *sel = shader->selector; struct lp_build_tgsi_context *bld_base = &ctx->bld_base; switch (ctx->type) { case PIPE_SHADER_VERTEX: ctx->load_input = declare_input_vs; if (shader->key.as_ls) bld_base->emit_epilogue = si_llvm_emit_ls_epilogue; else if (shader->key.as_es) bld_base->emit_epilogue = si_llvm_emit_es_epilogue; else bld_base->emit_epilogue = si_llvm_emit_vs_epilogue; break; case PIPE_SHADER_TESS_CTRL: bld_base->emit_fetch_funcs[TGSI_FILE_INPUT] = fetch_input_tcs; bld_base->emit_fetch_funcs[TGSI_FILE_OUTPUT] = fetch_output_tcs; bld_base->emit_store = store_output_tcs; bld_base->emit_epilogue = si_llvm_emit_tcs_epilogue; break; case PIPE_SHADER_TESS_EVAL: bld_base->emit_fetch_funcs[TGSI_FILE_INPUT] = fetch_input_tes; if (shader->key.as_es) bld_base->emit_epilogue = si_llvm_emit_es_epilogue; else bld_base->emit_epilogue = si_llvm_emit_vs_epilogue; break; case PIPE_SHADER_GEOMETRY: bld_base->emit_fetch_funcs[TGSI_FILE_INPUT] = fetch_input_gs; bld_base->emit_epilogue = si_llvm_emit_gs_epilogue; break; case PIPE_SHADER_FRAGMENT: ctx->load_input = declare_input_fs; bld_base->emit_epilogue = si_llvm_return_fs_outputs; break; case PIPE_SHADER_COMPUTE: ctx->declare_memory_region = declare_compute_memory; break; default: assert(!"Unsupported shader type"); return false; } create_function(ctx); preload_ring_buffers(ctx); /* For GFX9 merged shaders: * - Set EXEC. If the prolog is present, set EXEC there instead. * - Add a barrier before the second shader. * * The same thing for monolithic shaders is done in * si_build_wrapper_function. */ if (ctx->screen->b.chip_class >= GFX9 && !is_monolithic) { if (sel->info.num_instructions > 1 && /* not empty shader */ (shader->key.as_es || shader->key.as_ls) && (ctx->type == PIPE_SHADER_TESS_EVAL || (ctx->type == PIPE_SHADER_VERTEX && !sel->vs_needs_prolog))) { si_init_exec_from_input(ctx, ctx->param_merged_wave_info, 0); } else if (ctx->type == PIPE_SHADER_TESS_CTRL || ctx->type == PIPE_SHADER_GEOMETRY) { si_init_exec_from_input(ctx, ctx->param_merged_wave_info, 8); si_llvm_emit_barrier(NULL, bld_base, NULL); } } if (ctx->type == PIPE_SHADER_GEOMETRY) { int i; for (i = 0; i < 4; i++) { ctx->gs_next_vertex[i] = lp_build_alloca(&ctx->gallivm, ctx->i32, ""); } } if (ctx->type == PIPE_SHADER_FRAGMENT && sel->info.uses_kill && ctx->screen->b.debug_flags & DBG_FS_CORRECT_DERIVS_AFTER_KILL) { /* This is initialized to 0.0 = not kill. */ ctx->postponed_kill = lp_build_alloca(&ctx->gallivm, ctx->f32, ""); } if (!lp_build_tgsi_llvm(bld_base, sel->tokens)) { fprintf(stderr, "Failed to translate shader from TGSI to LLVM\n"); return false; } si_llvm_build_ret(ctx, ctx->return_value); return true; } /** * Compute the VS prolog key, which contains all the information needed to * build the VS prolog function, and set shader->info bits where needed. * * \param info Shader info of the vertex shader. * \param num_input_sgprs Number of input SGPRs for the vertex shader. * \param prolog_key Key of the VS prolog * \param shader_out The vertex shader, or the next shader if merging LS+HS or ES+GS. * \param key Output shader part key. */ static void si_get_vs_prolog_key(const struct tgsi_shader_info *info, unsigned num_input_sgprs, const struct si_vs_prolog_bits *prolog_key, struct si_shader *shader_out, union si_shader_part_key *key) { memset(key, 0, sizeof(*key)); key->vs_prolog.states = *prolog_key; key->vs_prolog.num_input_sgprs = num_input_sgprs; key->vs_prolog.last_input = MAX2(1, info->num_inputs) - 1; key->vs_prolog.as_ls = shader_out->key.as_ls; if (shader_out->selector->type == PIPE_SHADER_TESS_CTRL) { key->vs_prolog.as_ls = 1; key->vs_prolog.num_merged_next_stage_vgprs = 2; } else if (shader_out->selector->type == PIPE_SHADER_GEOMETRY) { key->vs_prolog.num_merged_next_stage_vgprs = 5; } /* Enable loading the InstanceID VGPR. */ uint16_t input_mask = u_bit_consecutive(0, info->num_inputs); if ((key->vs_prolog.states.instance_divisor_is_one | key->vs_prolog.states.instance_divisor_is_fetched) & input_mask) shader_out->info.uses_instanceid = true; } /** * Compute the PS prolog key, which contains all the information needed to * build the PS prolog function, and set related bits in shader->config. */ static void si_get_ps_prolog_key(struct si_shader *shader, union si_shader_part_key *key, bool separate_prolog) { struct tgsi_shader_info *info = &shader->selector->info; memset(key, 0, sizeof(*key)); key->ps_prolog.states = shader->key.part.ps.prolog; key->ps_prolog.colors_read = info->colors_read; key->ps_prolog.num_input_sgprs = shader->info.num_input_sgprs; key->ps_prolog.num_input_vgprs = shader->info.num_input_vgprs; key->ps_prolog.wqm = info->uses_derivatives && (key->ps_prolog.colors_read || key->ps_prolog.states.force_persp_sample_interp || key->ps_prolog.states.force_linear_sample_interp || key->ps_prolog.states.force_persp_center_interp || key->ps_prolog.states.force_linear_center_interp || key->ps_prolog.states.bc_optimize_for_persp || key->ps_prolog.states.bc_optimize_for_linear); if (info->colors_read) { unsigned *color = shader->selector->color_attr_index; if (shader->key.part.ps.prolog.color_two_side) { /* BCOLORs are stored after the last input. */ key->ps_prolog.num_interp_inputs = info->num_inputs; key->ps_prolog.face_vgpr_index = shader->info.face_vgpr_index; shader->config.spi_ps_input_ena |= S_0286CC_FRONT_FACE_ENA(1); } for (unsigned i = 0; i < 2; i++) { unsigned interp = info->input_interpolate[color[i]]; unsigned location = info->input_interpolate_loc[color[i]]; if (!(info->colors_read & (0xf << i*4))) continue; key->ps_prolog.color_attr_index[i] = color[i]; if (shader->key.part.ps.prolog.flatshade_colors && interp == TGSI_INTERPOLATE_COLOR) interp = TGSI_INTERPOLATE_CONSTANT; switch (interp) { case TGSI_INTERPOLATE_CONSTANT: key->ps_prolog.color_interp_vgpr_index[i] = -1; break; case TGSI_INTERPOLATE_PERSPECTIVE: case TGSI_INTERPOLATE_COLOR: /* Force the interpolation location for colors here. */ if (shader->key.part.ps.prolog.force_persp_sample_interp) location = TGSI_INTERPOLATE_LOC_SAMPLE; if (shader->key.part.ps.prolog.force_persp_center_interp) location = TGSI_INTERPOLATE_LOC_CENTER; switch (location) { case TGSI_INTERPOLATE_LOC_SAMPLE: key->ps_prolog.color_interp_vgpr_index[i] = 0; shader->config.spi_ps_input_ena |= S_0286CC_PERSP_SAMPLE_ENA(1); break; case TGSI_INTERPOLATE_LOC_CENTER: key->ps_prolog.color_interp_vgpr_index[i] = 2; shader->config.spi_ps_input_ena |= S_0286CC_PERSP_CENTER_ENA(1); break; case TGSI_INTERPOLATE_LOC_CENTROID: key->ps_prolog.color_interp_vgpr_index[i] = 4; shader->config.spi_ps_input_ena |= S_0286CC_PERSP_CENTROID_ENA(1); break; default: assert(0); } break; case TGSI_INTERPOLATE_LINEAR: /* Force the interpolation location for colors here. */ if (shader->key.part.ps.prolog.force_linear_sample_interp) location = TGSI_INTERPOLATE_LOC_SAMPLE; if (shader->key.part.ps.prolog.force_linear_center_interp) location = TGSI_INTERPOLATE_LOC_CENTER; /* The VGPR assignment for non-monolithic shaders * works because InitialPSInputAddr is set on the * main shader and PERSP_PULL_MODEL is never used. */ switch (location) { case TGSI_INTERPOLATE_LOC_SAMPLE: key->ps_prolog.color_interp_vgpr_index[i] = separate_prolog ? 6 : 9; shader->config.spi_ps_input_ena |= S_0286CC_LINEAR_SAMPLE_ENA(1); break; case TGSI_INTERPOLATE_LOC_CENTER: key->ps_prolog.color_interp_vgpr_index[i] = separate_prolog ? 8 : 11; shader->config.spi_ps_input_ena |= S_0286CC_LINEAR_CENTER_ENA(1); break; case TGSI_INTERPOLATE_LOC_CENTROID: key->ps_prolog.color_interp_vgpr_index[i] = separate_prolog ? 10 : 13; shader->config.spi_ps_input_ena |= S_0286CC_LINEAR_CENTROID_ENA(1); break; default: assert(0); } break; default: assert(0); } } } } /** * Check whether a PS prolog is required based on the key. */ static bool si_need_ps_prolog(const union si_shader_part_key *key) { return key->ps_prolog.colors_read || key->ps_prolog.states.force_persp_sample_interp || key->ps_prolog.states.force_linear_sample_interp || key->ps_prolog.states.force_persp_center_interp || key->ps_prolog.states.force_linear_center_interp || key->ps_prolog.states.bc_optimize_for_persp || key->ps_prolog.states.bc_optimize_for_linear || key->ps_prolog.states.poly_stipple; } /** * Compute the PS epilog key, which contains all the information needed to * build the PS epilog function. */ static void si_get_ps_epilog_key(struct si_shader *shader, union si_shader_part_key *key) { struct tgsi_shader_info *info = &shader->selector->info; memset(key, 0, sizeof(*key)); key->ps_epilog.colors_written = info->colors_written; key->ps_epilog.writes_z = info->writes_z; key->ps_epilog.writes_stencil = info->writes_stencil; key->ps_epilog.writes_samplemask = info->writes_samplemask; key->ps_epilog.states = shader->key.part.ps.epilog; } /** * Build the GS prolog function. Rotate the input vertices for triangle strips * with adjacency. */ static void si_build_gs_prolog_function(struct si_shader_context *ctx, union si_shader_part_key *key) { unsigned num_sgprs, num_vgprs; struct gallivm_state *gallivm = &ctx->gallivm; LLVMBuilderRef builder = gallivm->builder; LLVMTypeRef params[48]; /* 40 SGPRs (maximum) + some VGPRs */ LLVMTypeRef returns[48]; LLVMValueRef func, ret; if (ctx->screen->b.chip_class >= GFX9) { num_sgprs = 8 + GFX9_GS_NUM_USER_SGPR; num_vgprs = 5; /* ES inputs are not needed by GS */ } else { num_sgprs = GFX6_GS_NUM_USER_SGPR + 2; num_vgprs = 8; } for (unsigned i = 0; i < num_sgprs; ++i) { params[i] = ctx->i32; returns[i] = ctx->i32; } for (unsigned i = 0; i < num_vgprs; ++i) { params[num_sgprs + i] = ctx->i32; returns[num_sgprs + i] = ctx->f32; } /* Create the function. */ si_create_function(ctx, "gs_prolog", returns, num_sgprs + num_vgprs, params, num_sgprs + num_vgprs, num_sgprs - 1, 0); func = ctx->main_fn; /* Set the full EXEC mask for the prolog, because we are only fiddling * with registers here. The main shader part will set the correct EXEC * mask. */ if (ctx->screen->b.chip_class >= GFX9 && !key->gs_prolog.is_monolithic) si_init_exec_full_mask(ctx); /* Copy inputs to outputs. This should be no-op, as the registers match, * but it will prevent the compiler from overwriting them unintentionally. */ ret = ctx->return_value; for (unsigned i = 0; i < num_sgprs; i++) { LLVMValueRef p = LLVMGetParam(func, i); ret = LLVMBuildInsertValue(builder, ret, p, i, ""); } for (unsigned i = 0; i < num_vgprs; i++) { LLVMValueRef p = LLVMGetParam(func, num_sgprs + i); p = LLVMBuildBitCast(builder, p, ctx->f32, ""); ret = LLVMBuildInsertValue(builder, ret, p, num_sgprs + i, ""); } if (key->gs_prolog.states.tri_strip_adj_fix) { /* Remap the input vertices for every other primitive. */ const unsigned gfx6_vtx_params[6] = { num_sgprs, num_sgprs + 1, num_sgprs + 3, num_sgprs + 4, num_sgprs + 5, num_sgprs + 6 }; const unsigned gfx9_vtx_params[3] = { num_sgprs, num_sgprs + 1, num_sgprs + 4, }; LLVMValueRef vtx_in[6], vtx_out[6]; LLVMValueRef prim_id, rotate; if (ctx->screen->b.chip_class >= GFX9) { for (unsigned i = 0; i < 3; i++) { vtx_in[i*2] = unpack_param(ctx, gfx9_vtx_params[i], 0, 16); vtx_in[i*2+1] = unpack_param(ctx, gfx9_vtx_params[i], 16, 16); } } else { for (unsigned i = 0; i < 6; i++) vtx_in[i] = LLVMGetParam(func, gfx6_vtx_params[i]); } prim_id = LLVMGetParam(func, num_sgprs + 2); rotate = LLVMBuildTrunc(builder, prim_id, ctx->i1, ""); for (unsigned i = 0; i < 6; ++i) { LLVMValueRef base, rotated; base = vtx_in[i]; rotated = vtx_in[(i + 4) % 6]; vtx_out[i] = LLVMBuildSelect(builder, rotate, rotated, base, ""); } if (ctx->screen->b.chip_class >= GFX9) { for (unsigned i = 0; i < 3; i++) { LLVMValueRef hi, out; hi = LLVMBuildShl(builder, vtx_out[i*2+1], LLVMConstInt(ctx->i32, 16, 0), ""); out = LLVMBuildOr(builder, vtx_out[i*2], hi, ""); out = LLVMBuildBitCast(builder, out, ctx->f32, ""); ret = LLVMBuildInsertValue(builder, ret, out, gfx9_vtx_params[i], ""); } } else { for (unsigned i = 0; i < 6; i++) { LLVMValueRef out; out = LLVMBuildBitCast(builder, vtx_out[i], ctx->f32, ""); ret = LLVMBuildInsertValue(builder, ret, out, gfx6_vtx_params[i], ""); } } } LLVMBuildRet(builder, ret); } /** * Given a list of shader part functions, build a wrapper function that * runs them in sequence to form a monolithic shader. */ static void si_build_wrapper_function(struct si_shader_context *ctx, LLVMValueRef *parts, unsigned num_parts, unsigned main_part, unsigned next_shader_first_part) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMBuilderRef builder = ctx->gallivm.builder; /* PS epilog has one arg per color component */ LLVMTypeRef param_types[48]; LLVMValueRef initial[48], out[48]; LLVMTypeRef function_type; unsigned num_params; unsigned num_out, initial_num_out; MAYBE_UNUSED unsigned num_out_sgpr; /* used in debug checks */ MAYBE_UNUSED unsigned initial_num_out_sgpr; /* used in debug checks */ unsigned num_sgprs, num_vgprs; unsigned last_sgpr_param; unsigned gprs; struct lp_build_if_state if_state; for (unsigned i = 0; i < num_parts; ++i) { lp_add_function_attr(parts[i], -1, LP_FUNC_ATTR_ALWAYSINLINE); LLVMSetLinkage(parts[i], LLVMPrivateLinkage); } /* The parameters of the wrapper function correspond to those of the * first part in terms of SGPRs and VGPRs, but we use the types of the * main part to get the right types. This is relevant for the * dereferenceable attribute on descriptor table pointers. */ num_sgprs = 0; num_vgprs = 0; function_type = LLVMGetElementType(LLVMTypeOf(parts[0])); num_params = LLVMCountParamTypes(function_type); for (unsigned i = 0; i < num_params; ++i) { LLVMValueRef param = LLVMGetParam(parts[0], i); if (ac_is_sgpr_param(param)) { assert(num_vgprs == 0); num_sgprs += llvm_get_type_size(LLVMTypeOf(param)) / 4; } else { num_vgprs += llvm_get_type_size(LLVMTypeOf(param)) / 4; } } assert(num_vgprs + num_sgprs <= ARRAY_SIZE(param_types)); num_params = 0; last_sgpr_param = 0; gprs = 0; while (gprs < num_sgprs + num_vgprs) { LLVMValueRef param = LLVMGetParam(parts[main_part], num_params); unsigned size; param_types[num_params] = LLVMTypeOf(param); if (gprs < num_sgprs) last_sgpr_param = num_params; size = llvm_get_type_size(param_types[num_params]) / 4; num_params++; assert(ac_is_sgpr_param(param) == (gprs < num_sgprs)); assert(gprs + size <= num_sgprs + num_vgprs && (gprs >= num_sgprs || gprs + size <= num_sgprs)); gprs += size; } si_create_function(ctx, "wrapper", NULL, 0, param_types, num_params, last_sgpr_param, si_get_max_workgroup_size(ctx->shader)); if (is_merged_shader(ctx->shader)) si_init_exec_full_mask(ctx); /* Record the arguments of the function as if they were an output of * a previous part. */ num_out = 0; num_out_sgpr = 0; for (unsigned i = 0; i < num_params; ++i) { LLVMValueRef param = LLVMGetParam(ctx->main_fn, i); LLVMTypeRef param_type = LLVMTypeOf(param); LLVMTypeRef out_type = i <= last_sgpr_param ? ctx->i32 : ctx->f32; unsigned size = llvm_get_type_size(param_type) / 4; if (size == 1) { if (param_type != out_type) param = LLVMBuildBitCast(builder, param, out_type, ""); out[num_out++] = param; } else { LLVMTypeRef vector_type = LLVMVectorType(out_type, size); if (LLVMGetTypeKind(param_type) == LLVMPointerTypeKind) { param = LLVMBuildPtrToInt(builder, param, ctx->i64, ""); param_type = ctx->i64; } if (param_type != vector_type) param = LLVMBuildBitCast(builder, param, vector_type, ""); for (unsigned j = 0; j < size; ++j) out[num_out++] = LLVMBuildExtractElement( builder, param, LLVMConstInt(ctx->i32, j, 0), ""); } if (i <= last_sgpr_param) num_out_sgpr = num_out; } memcpy(initial, out, sizeof(out)); initial_num_out = num_out; initial_num_out_sgpr = num_out_sgpr; /* Now chain the parts. */ for (unsigned part = 0; part < num_parts; ++part) { LLVMValueRef in[48]; LLVMValueRef ret; LLVMTypeRef ret_type; unsigned out_idx = 0; num_params = LLVMCountParams(parts[part]); assert(num_params <= ARRAY_SIZE(param_types)); /* Merged shaders are executed conditionally depending * on the number of enabled threads passed in the input SGPRs. */ if (is_merged_shader(ctx->shader) && (part == 0 || part == next_shader_first_part)) { LLVMValueRef ena, count = initial[3]; /* The thread count for the 2nd shader is at bit-offset 8. */ if (part == next_shader_first_part) { count = LLVMBuildLShr(builder, count, LLVMConstInt(ctx->i32, 8, 0), ""); } count = LLVMBuildAnd(builder, count, LLVMConstInt(ctx->i32, 0x7f, 0), ""); ena = LLVMBuildICmp(builder, LLVMIntULT, ac_get_thread_id(&ctx->ac), count, ""); lp_build_if(&if_state, &ctx->gallivm, ena); } /* Derive arguments for the next part from outputs of the * previous one. */ for (unsigned param_idx = 0; param_idx < num_params; ++param_idx) { LLVMValueRef param; LLVMTypeRef param_type; bool is_sgpr; unsigned param_size; LLVMValueRef arg = NULL; param = LLVMGetParam(parts[part], param_idx); param_type = LLVMTypeOf(param); param_size = llvm_get_type_size(param_type) / 4; is_sgpr = ac_is_sgpr_param(param); if (is_sgpr) { #if HAVE_LLVM < 0x0400 LLVMRemoveAttribute(param, LLVMByValAttribute); #else unsigned kind_id = LLVMGetEnumAttributeKindForName("byval", 5); LLVMRemoveEnumAttributeAtIndex(parts[part], param_idx + 1, kind_id); #endif lp_add_function_attr(parts[part], param_idx + 1, LP_FUNC_ATTR_INREG); } assert(out_idx + param_size <= (is_sgpr ? num_out_sgpr : num_out)); assert(is_sgpr || out_idx >= num_out_sgpr); if (param_size == 1) arg = out[out_idx]; else arg = lp_build_gather_values(gallivm, &out[out_idx], param_size); if (LLVMTypeOf(arg) != param_type) { if (LLVMGetTypeKind(param_type) == LLVMPointerTypeKind) { arg = LLVMBuildBitCast(builder, arg, ctx->i64, ""); arg = LLVMBuildIntToPtr(builder, arg, param_type, ""); } else { arg = LLVMBuildBitCast(builder, arg, param_type, ""); } } in[param_idx] = arg; out_idx += param_size; } ret = LLVMBuildCall(builder, parts[part], in, num_params, ""); if (is_merged_shader(ctx->shader) && (part + 1 == next_shader_first_part || part + 1 == num_parts)) { lp_build_endif(&if_state); if (part + 1 == next_shader_first_part) { /* A barrier is required between 2 merged shaders. */ si_llvm_emit_barrier(NULL, &ctx->bld_base, NULL); /* The second half of the merged shader should use * the inputs from the toplevel (wrapper) function, * not the return value from the last call. * * That's because the last call was executed condi- * tionally, so we can't consume it in the main * block. */ memcpy(out, initial, sizeof(initial)); num_out = initial_num_out; num_out_sgpr = initial_num_out_sgpr; } continue; } /* Extract the returned GPRs. */ ret_type = LLVMTypeOf(ret); num_out = 0; num_out_sgpr = 0; if (LLVMGetTypeKind(ret_type) != LLVMVoidTypeKind) { assert(LLVMGetTypeKind(ret_type) == LLVMStructTypeKind); unsigned ret_size = LLVMCountStructElementTypes(ret_type); for (unsigned i = 0; i < ret_size; ++i) { LLVMValueRef val = LLVMBuildExtractValue(builder, ret, i, ""); out[num_out++] = val; if (LLVMTypeOf(val) == ctx->i32) { assert(num_out_sgpr + 1 == num_out); num_out_sgpr = num_out; } } } } LLVMBuildRetVoid(builder); } int si_compile_tgsi_shader(struct si_screen *sscreen, LLVMTargetMachineRef tm, struct si_shader *shader, bool is_monolithic, struct pipe_debug_callback *debug) { struct si_shader_selector *sel = shader->selector; struct si_shader_context ctx; int r = -1; /* Dump TGSI code before doing TGSI->LLVM conversion in case the * conversion fails. */ if (r600_can_dump_shader(&sscreen->b, sel->info.processor) && !(sscreen->b.debug_flags & DBG_NO_TGSI)) { tgsi_dump(sel->tokens, 0); si_dump_streamout(&sel->so); } si_init_shader_ctx(&ctx, sscreen, tm); si_llvm_context_set_tgsi(&ctx, shader); ctx.separate_prolog = !is_monolithic; memset(shader->info.vs_output_param_offset, AC_EXP_PARAM_UNDEFINED, sizeof(shader->info.vs_output_param_offset)); shader->info.uses_instanceid = sel->info.uses_instanceid; ctx.load_system_value = declare_system_value; if (!si_compile_tgsi_main(&ctx, is_monolithic)) { si_llvm_dispose(&ctx); return -1; } if (is_monolithic && ctx.type == PIPE_SHADER_VERTEX) { LLVMValueRef parts[2]; bool need_prolog = sel->vs_needs_prolog; parts[1] = ctx.main_fn; if (need_prolog) { union si_shader_part_key prolog_key; si_get_vs_prolog_key(&sel->info, shader->info.num_input_sgprs, &shader->key.part.vs.prolog, shader, &prolog_key); si_build_vs_prolog_function(&ctx, &prolog_key); parts[0] = ctx.main_fn; } si_build_wrapper_function(&ctx, parts + !need_prolog, 1 + need_prolog, need_prolog, 0); } else if (is_monolithic && ctx.type == PIPE_SHADER_TESS_CTRL) { if (sscreen->b.chip_class >= GFX9) { struct si_shader_selector *ls = shader->key.part.tcs.ls; LLVMValueRef parts[4]; /* TCS main part */ parts[2] = ctx.main_fn; /* TCS epilog */ union si_shader_part_key tcs_epilog_key; memset(&tcs_epilog_key, 0, sizeof(tcs_epilog_key)); tcs_epilog_key.tcs_epilog.states = shader->key.part.tcs.epilog; si_build_tcs_epilog_function(&ctx, &tcs_epilog_key); parts[3] = ctx.main_fn; /* VS prolog */ if (ls->vs_needs_prolog) { union si_shader_part_key vs_prolog_key; si_get_vs_prolog_key(&ls->info, shader->info.num_input_sgprs, &shader->key.part.tcs.ls_prolog, shader, &vs_prolog_key); vs_prolog_key.vs_prolog.is_monolithic = true; si_build_vs_prolog_function(&ctx, &vs_prolog_key); parts[0] = ctx.main_fn; } /* VS as LS main part */ struct si_shader shader_ls = {}; shader_ls.selector = ls; shader_ls.key.as_ls = 1; shader_ls.key.mono = shader->key.mono; shader_ls.key.opt = shader->key.opt; si_llvm_context_set_tgsi(&ctx, &shader_ls); if (!si_compile_tgsi_main(&ctx, true)) { si_llvm_dispose(&ctx); return -1; } shader->info.uses_instanceid |= ls->info.uses_instanceid; parts[1] = ctx.main_fn; /* Reset the shader context. */ ctx.shader = shader; ctx.type = PIPE_SHADER_TESS_CTRL; si_build_wrapper_function(&ctx, parts + !ls->vs_needs_prolog, 4 - !ls->vs_needs_prolog, 0, ls->vs_needs_prolog ? 2 : 1); } else { LLVMValueRef parts[2]; union si_shader_part_key epilog_key; parts[0] = ctx.main_fn; memset(&epilog_key, 0, sizeof(epilog_key)); epilog_key.tcs_epilog.states = shader->key.part.tcs.epilog; si_build_tcs_epilog_function(&ctx, &epilog_key); parts[1] = ctx.main_fn; si_build_wrapper_function(&ctx, parts, 2, 0, 0); } } else if (is_monolithic && ctx.type == PIPE_SHADER_GEOMETRY) { if (ctx.screen->b.chip_class >= GFX9) { struct si_shader_selector *es = shader->key.part.gs.es; LLVMValueRef es_prolog = NULL; LLVMValueRef es_main = NULL; LLVMValueRef gs_prolog = NULL; LLVMValueRef gs_main = ctx.main_fn; /* GS prolog */ union si_shader_part_key gs_prolog_key; memset(&gs_prolog_key, 0, sizeof(gs_prolog_key)); gs_prolog_key.gs_prolog.states = shader->key.part.gs.prolog; gs_prolog_key.gs_prolog.is_monolithic = true; si_build_gs_prolog_function(&ctx, &gs_prolog_key); gs_prolog = ctx.main_fn; /* ES prolog */ if (es->vs_needs_prolog) { union si_shader_part_key vs_prolog_key; si_get_vs_prolog_key(&es->info, shader->info.num_input_sgprs, &shader->key.part.tcs.ls_prolog, shader, &vs_prolog_key); vs_prolog_key.vs_prolog.is_monolithic = true; si_build_vs_prolog_function(&ctx, &vs_prolog_key); es_prolog = ctx.main_fn; } /* ES main part */ struct si_shader shader_es = {}; shader_es.selector = es; shader_es.key.as_es = 1; shader_es.key.mono = shader->key.mono; shader_es.key.opt = shader->key.opt; si_llvm_context_set_tgsi(&ctx, &shader_es); if (!si_compile_tgsi_main(&ctx, true)) { si_llvm_dispose(&ctx); return -1; } shader->info.uses_instanceid |= es->info.uses_instanceid; es_main = ctx.main_fn; /* Reset the shader context. */ ctx.shader = shader; ctx.type = PIPE_SHADER_GEOMETRY; /* Prepare the array of shader parts. */ LLVMValueRef parts[4]; unsigned num_parts = 0, main_part, next_first_part; if (es_prolog) parts[num_parts++] = es_prolog; parts[main_part = num_parts++] = es_main; parts[next_first_part = num_parts++] = gs_prolog; parts[num_parts++] = gs_main; si_build_wrapper_function(&ctx, parts, num_parts, main_part, next_first_part); } else { LLVMValueRef parts[2]; union si_shader_part_key prolog_key; parts[1] = ctx.main_fn; memset(&prolog_key, 0, sizeof(prolog_key)); prolog_key.gs_prolog.states = shader->key.part.gs.prolog; si_build_gs_prolog_function(&ctx, &prolog_key); parts[0] = ctx.main_fn; si_build_wrapper_function(&ctx, parts, 2, 1, 0); } } else if (is_monolithic && ctx.type == PIPE_SHADER_FRAGMENT) { LLVMValueRef parts[3]; union si_shader_part_key prolog_key; union si_shader_part_key epilog_key; bool need_prolog; si_get_ps_prolog_key(shader, &prolog_key, false); need_prolog = si_need_ps_prolog(&prolog_key); parts[need_prolog ? 1 : 0] = ctx.main_fn; if (need_prolog) { si_build_ps_prolog_function(&ctx, &prolog_key); parts[0] = ctx.main_fn; } si_get_ps_epilog_key(shader, &epilog_key); si_build_ps_epilog_function(&ctx, &epilog_key); parts[need_prolog ? 2 : 1] = ctx.main_fn; si_build_wrapper_function(&ctx, parts, need_prolog ? 3 : 2, need_prolog ? 1 : 0, 0); } si_llvm_optimize_module(&ctx); /* Post-optimization transformations and analysis. */ si_optimize_vs_outputs(&ctx); if ((debug && debug->debug_message) || r600_can_dump_shader(&sscreen->b, ctx.type)) si_count_scratch_private_memory(&ctx); /* Compile to bytecode. */ r = si_compile_llvm(sscreen, &shader->binary, &shader->config, tm, ctx.gallivm.module, debug, ctx.type, "TGSI shader"); si_llvm_dispose(&ctx); if (r) { fprintf(stderr, "LLVM failed to compile shader\n"); return r; } /* Validate SGPR and VGPR usage for compute to detect compiler bugs. * LLVM 3.9svn has this bug. */ if (sel->type == PIPE_SHADER_COMPUTE) { unsigned wave_size = 64; unsigned max_vgprs = 256; unsigned max_sgprs = sscreen->b.chip_class >= VI ? 800 : 512; unsigned max_sgprs_per_wave = 128; unsigned max_block_threads = si_get_max_workgroup_size(shader); unsigned min_waves_per_cu = DIV_ROUND_UP(max_block_threads, wave_size); unsigned min_waves_per_simd = DIV_ROUND_UP(min_waves_per_cu, 4); max_vgprs = max_vgprs / min_waves_per_simd; max_sgprs = MIN2(max_sgprs / min_waves_per_simd, max_sgprs_per_wave); if (shader->config.num_sgprs > max_sgprs || shader->config.num_vgprs > max_vgprs) { fprintf(stderr, "LLVM failed to compile a shader correctly: " "SGPR:VGPR usage is %u:%u, but the hw limit is %u:%u\n", shader->config.num_sgprs, shader->config.num_vgprs, max_sgprs, max_vgprs); /* Just terminate the process, because dependent * shaders can hang due to bad input data, but use * the env var to allow shader-db to work. */ if (!debug_get_bool_option("SI_PASS_BAD_SHADERS", false)) abort(); } } /* Add the scratch offset to input SGPRs. */ if (shader->config.scratch_bytes_per_wave && !is_merged_shader(shader)) shader->info.num_input_sgprs += 1; /* scratch byte offset */ /* Calculate the number of fragment input VGPRs. */ if (ctx.type == PIPE_SHADER_FRAGMENT) { shader->info.num_input_vgprs = 0; shader->info.face_vgpr_index = -1; if (G_0286CC_PERSP_SAMPLE_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 2; if (G_0286CC_PERSP_CENTER_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 2; if (G_0286CC_PERSP_CENTROID_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 2; if (G_0286CC_PERSP_PULL_MODEL_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 3; if (G_0286CC_LINEAR_SAMPLE_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 2; if (G_0286CC_LINEAR_CENTER_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 2; if (G_0286CC_LINEAR_CENTROID_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 2; if (G_0286CC_LINE_STIPPLE_TEX_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 1; if (G_0286CC_POS_X_FLOAT_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 1; if (G_0286CC_POS_Y_FLOAT_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 1; if (G_0286CC_POS_Z_FLOAT_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 1; if (G_0286CC_POS_W_FLOAT_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 1; if (G_0286CC_FRONT_FACE_ENA(shader->config.spi_ps_input_addr)) { shader->info.face_vgpr_index = shader->info.num_input_vgprs; shader->info.num_input_vgprs += 1; } if (G_0286CC_ANCILLARY_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 1; if (G_0286CC_SAMPLE_COVERAGE_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 1; if (G_0286CC_POS_FIXED_PT_ENA(shader->config.spi_ps_input_addr)) shader->info.num_input_vgprs += 1; } return 0; } /** * Create, compile and return a shader part (prolog or epilog). * * \param sscreen screen * \param list list of shader parts of the same category * \param type shader type * \param key shader part key * \param prolog whether the part being requested is a prolog * \param tm LLVM target machine * \param debug debug callback * \param build the callback responsible for building the main function * \return non-NULL on success */ static struct si_shader_part * si_get_shader_part(struct si_screen *sscreen, struct si_shader_part **list, enum pipe_shader_type type, bool prolog, union si_shader_part_key *key, LLVMTargetMachineRef tm, struct pipe_debug_callback *debug, void (*build)(struct si_shader_context *, union si_shader_part_key *), const char *name) { struct si_shader_part *result; mtx_lock(&sscreen->shader_parts_mutex); /* Find existing. */ for (result = *list; result; result = result->next) { if (memcmp(&result->key, key, sizeof(*key)) == 0) { mtx_unlock(&sscreen->shader_parts_mutex); return result; } } /* Compile a new one. */ result = CALLOC_STRUCT(si_shader_part); result->key = *key; struct si_shader shader = {}; struct si_shader_context ctx; struct gallivm_state *gallivm = &ctx.gallivm; si_init_shader_ctx(&ctx, sscreen, tm); ctx.shader = &shader; ctx.type = type; switch (type) { case PIPE_SHADER_VERTEX: break; case PIPE_SHADER_TESS_CTRL: assert(!prolog); shader.key.part.tcs.epilog = key->tcs_epilog.states; break; case PIPE_SHADER_GEOMETRY: assert(prolog); break; case PIPE_SHADER_FRAGMENT: if (prolog) shader.key.part.ps.prolog = key->ps_prolog.states; else shader.key.part.ps.epilog = key->ps_epilog.states; break; default: unreachable("bad shader part"); } build(&ctx, key); /* Compile. */ si_llvm_optimize_module(&ctx); if (si_compile_llvm(sscreen, &result->binary, &result->config, tm, gallivm->module, debug, ctx.type, name)) { FREE(result); result = NULL; goto out; } result->next = *list; *list = result; out: si_llvm_dispose(&ctx); mtx_unlock(&sscreen->shader_parts_mutex); return result; } static LLVMValueRef si_prolog_get_rw_buffers(struct si_shader_context *ctx) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMValueRef ptr[2], list; /* Get the pointer to rw buffers. */ ptr[0] = LLVMGetParam(ctx->main_fn, SI_SGPR_RW_BUFFERS); ptr[1] = LLVMGetParam(ctx->main_fn, SI_SGPR_RW_BUFFERS_HI); list = lp_build_gather_values(gallivm, ptr, 2); list = LLVMBuildBitCast(gallivm->builder, list, ctx->i64, ""); list = LLVMBuildIntToPtr(gallivm->builder, list, si_const_array(ctx->v4i32, SI_NUM_RW_BUFFERS), ""); return list; } /** * Build the vertex shader prolog function. * * The inputs are the same as VS (a lot of SGPRs and 4 VGPR system values). * All inputs are returned unmodified. The vertex load indices are * stored after them, which will be used by the API VS for fetching inputs. * * For example, the expected outputs for instance_divisors[] = {0, 1, 2} are: * input_v0, * input_v1, * input_v2, * input_v3, * (VertexID + BaseVertex), * (InstanceID + StartInstance), * (InstanceID / 2 + StartInstance) */ static void si_build_vs_prolog_function(struct si_shader_context *ctx, union si_shader_part_key *key) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMTypeRef *params, *returns; LLVMValueRef ret, func; int last_sgpr, num_params, num_returns, i; unsigned first_vs_vgpr = key->vs_prolog.num_input_sgprs + key->vs_prolog.num_merged_next_stage_vgprs; unsigned num_input_vgprs = key->vs_prolog.num_merged_next_stage_vgprs + 4; unsigned num_all_input_regs = key->vs_prolog.num_input_sgprs + num_input_vgprs; unsigned user_sgpr_base = key->vs_prolog.num_merged_next_stage_vgprs ? 8 : 0; ctx->param_vertex_id = first_vs_vgpr; ctx->param_instance_id = first_vs_vgpr + (key->vs_prolog.as_ls ? 2 : 1); /* 4 preloaded VGPRs + vertex load indices as prolog outputs */ params = alloca(num_all_input_regs * sizeof(LLVMTypeRef)); returns = alloca((num_all_input_regs + key->vs_prolog.last_input + 1) * sizeof(LLVMTypeRef)); num_params = 0; num_returns = 0; /* Declare input and output SGPRs. */ num_params = 0; for (i = 0; i < key->vs_prolog.num_input_sgprs; i++) { params[num_params++] = ctx->i32; returns[num_returns++] = ctx->i32; } last_sgpr = num_params - 1; /* Preloaded VGPRs (outputs must be floats) */ for (i = 0; i < num_input_vgprs; i++) { params[num_params++] = ctx->i32; returns[num_returns++] = ctx->f32; } /* Vertex load indices. */ for (i = 0; i <= key->vs_prolog.last_input; i++) returns[num_returns++] = ctx->f32; /* Create the function. */ si_create_function(ctx, "vs_prolog", returns, num_returns, params, num_params, last_sgpr, 0); func = ctx->main_fn; if (key->vs_prolog.num_merged_next_stage_vgprs && !key->vs_prolog.is_monolithic) si_init_exec_from_input(ctx, 3, 0); /* Copy inputs to outputs. This should be no-op, as the registers match, * but it will prevent the compiler from overwriting them unintentionally. */ ret = ctx->return_value; for (i = 0; i < key->vs_prolog.num_input_sgprs; i++) { LLVMValueRef p = LLVMGetParam(func, i); ret = LLVMBuildInsertValue(gallivm->builder, ret, p, i, ""); } for (; i < num_params; i++) { LLVMValueRef p = LLVMGetParam(func, i); p = LLVMBuildBitCast(gallivm->builder, p, ctx->f32, ""); ret = LLVMBuildInsertValue(gallivm->builder, ret, p, i, ""); } /* Compute vertex load indices from instance divisors. */ LLVMValueRef instance_divisor_constbuf = NULL; if (key->vs_prolog.states.instance_divisor_is_fetched) { LLVMValueRef list = si_prolog_get_rw_buffers(ctx); LLVMValueRef buf_index = LLVMConstInt(ctx->i32, SI_VS_CONST_INSTANCE_DIVISORS, 0); instance_divisor_constbuf = ac_build_indexed_load_const(&ctx->ac, list, buf_index); } for (i = 0; i <= key->vs_prolog.last_input; i++) { bool divisor_is_one = key->vs_prolog.states.instance_divisor_is_one & (1u << i); bool divisor_is_fetched = key->vs_prolog.states.instance_divisor_is_fetched & (1u << i); LLVMValueRef index; if (divisor_is_one || divisor_is_fetched) { LLVMValueRef divisor = ctx->i32_1; if (divisor_is_fetched) { divisor = buffer_load_const(ctx, instance_divisor_constbuf, LLVMConstInt(ctx->i32, i * 4, 0)); divisor = LLVMBuildBitCast(gallivm->builder, divisor, ctx->i32, ""); } /* InstanceID / Divisor + StartInstance */ index = get_instance_index_for_fetch(ctx, user_sgpr_base + SI_SGPR_START_INSTANCE, divisor); } else { /* VertexID + BaseVertex */ index = LLVMBuildAdd(gallivm->builder, LLVMGetParam(func, ctx->param_vertex_id), LLVMGetParam(func, user_sgpr_base + SI_SGPR_BASE_VERTEX), ""); } index = LLVMBuildBitCast(gallivm->builder, index, ctx->f32, ""); ret = LLVMBuildInsertValue(gallivm->builder, ret, index, num_params++, ""); } si_llvm_build_ret(ctx, ret); } static bool si_get_vs_prolog(struct si_screen *sscreen, LLVMTargetMachineRef tm, struct si_shader *shader, struct pipe_debug_callback *debug, struct si_shader *main_part, const struct si_vs_prolog_bits *key) { struct si_shader_selector *vs = main_part->selector; /* The prolog is a no-op if there are no inputs. */ if (!vs->vs_needs_prolog) return true; /* Get the prolog. */ union si_shader_part_key prolog_key; si_get_vs_prolog_key(&vs->info, main_part->info.num_input_sgprs, key, shader, &prolog_key); shader->prolog = si_get_shader_part(sscreen, &sscreen->vs_prologs, PIPE_SHADER_VERTEX, true, &prolog_key, tm, debug, si_build_vs_prolog_function, "Vertex Shader Prolog"); return shader->prolog != NULL; } /** * Select and compile (or reuse) vertex shader parts (prolog & epilog). */ static bool si_shader_select_vs_parts(struct si_screen *sscreen, LLVMTargetMachineRef tm, struct si_shader *shader, struct pipe_debug_callback *debug) { return si_get_vs_prolog(sscreen, tm, shader, debug, shader, &shader->key.part.vs.prolog); } /** * Compile the TCS epilog function. This writes tesselation factors to memory * based on the output primitive type of the tesselator (determined by TES). */ static void si_build_tcs_epilog_function(struct si_shader_context *ctx, union si_shader_part_key *key) { struct gallivm_state *gallivm = &ctx->gallivm; struct lp_build_tgsi_context *bld_base = &ctx->bld_base; LLVMTypeRef params[32]; LLVMValueRef func; int last_sgpr, num_params = 0; if (ctx->screen->b.chip_class >= GFX9) { params[num_params++] = ctx->i64; params[ctx->param_tcs_offchip_offset = num_params++] = ctx->i32; params[num_params++] = ctx->i32; /* wave info */ params[ctx->param_tcs_factor_offset = num_params++] = ctx->i32; params[num_params++] = ctx->i32; params[num_params++] = ctx->i32; params[num_params++] = ctx->i32; params[num_params++] = ctx->i64; params[num_params++] = ctx->i64; params[num_params++] = ctx->i64; params[num_params++] = ctx->i64; params[num_params++] = ctx->i32; params[num_params++] = ctx->i32; params[num_params++] = ctx->i32; params[num_params++] = ctx->i32; params[ctx->param_tcs_offchip_layout = num_params++] = ctx->i32; params[num_params++] = ctx->i32; params[num_params++] = ctx->i32; params[ctx->param_tcs_offchip_addr_base64k = num_params++] = ctx->i32; params[ctx->param_tcs_factor_addr_base64k = num_params++] = ctx->i32; } else { params[num_params++] = ctx->i64; params[num_params++] = ctx->i64; params[num_params++] = ctx->i64; params[ctx->param_tcs_offchip_layout = num_params++] = ctx->i32; params[num_params++] = ctx->i32; params[num_params++] = ctx->i32; params[num_params++] = ctx->i32; params[ctx->param_tcs_offchip_addr_base64k = num_params++] = ctx->i32; params[ctx->param_tcs_factor_addr_base64k = num_params++] = ctx->i32; params[ctx->param_tcs_offchip_offset = num_params++] = ctx->i32; params[ctx->param_tcs_factor_offset = num_params++] = ctx->i32; } last_sgpr = num_params - 1; params[num_params++] = ctx->i32; /* patch index within the wave (REL_PATCH_ID) */ params[num_params++] = ctx->i32; /* invocation ID within the patch */ params[num_params++] = ctx->i32; /* LDS offset where tess factors should be loaded from */ /* Create the function. */ si_create_function(ctx, "tcs_epilog", NULL, 0, params, num_params, last_sgpr, ctx->screen->b.chip_class >= CIK ? 128 : 64); declare_lds_as_pointer(ctx); func = ctx->main_fn; si_write_tess_factors(bld_base, LLVMGetParam(func, last_sgpr + 1), LLVMGetParam(func, last_sgpr + 2), LLVMGetParam(func, last_sgpr + 3)); LLVMBuildRetVoid(gallivm->builder); } /** * Select and compile (or reuse) TCS parts (epilog). */ static bool si_shader_select_tcs_parts(struct si_screen *sscreen, LLVMTargetMachineRef tm, struct si_shader *shader, struct pipe_debug_callback *debug) { if (sscreen->b.chip_class >= GFX9) { struct si_shader *ls_main_part = shader->key.part.tcs.ls->main_shader_part_ls; if (!si_get_vs_prolog(sscreen, tm, shader, debug, ls_main_part, &shader->key.part.tcs.ls_prolog)) return false; shader->previous_stage = ls_main_part; } /* Get the epilog. */ union si_shader_part_key epilog_key; memset(&epilog_key, 0, sizeof(epilog_key)); epilog_key.tcs_epilog.states = shader->key.part.tcs.epilog; shader->epilog = si_get_shader_part(sscreen, &sscreen->tcs_epilogs, PIPE_SHADER_TESS_CTRL, false, &epilog_key, tm, debug, si_build_tcs_epilog_function, "Tessellation Control Shader Epilog"); return shader->epilog != NULL; } /** * Select and compile (or reuse) GS parts (prolog). */ static bool si_shader_select_gs_parts(struct si_screen *sscreen, LLVMTargetMachineRef tm, struct si_shader *shader, struct pipe_debug_callback *debug) { if (sscreen->b.chip_class >= GFX9) { struct si_shader *es_main_part = shader->key.part.gs.es->main_shader_part_es; if (shader->key.part.gs.es->type == PIPE_SHADER_VERTEX && !si_get_vs_prolog(sscreen, tm, shader, debug, es_main_part, &shader->key.part.gs.vs_prolog)) return false; shader->previous_stage = es_main_part; } if (!shader->key.part.gs.prolog.tri_strip_adj_fix) return true; union si_shader_part_key prolog_key; memset(&prolog_key, 0, sizeof(prolog_key)); prolog_key.gs_prolog.states = shader->key.part.gs.prolog; shader->prolog2 = si_get_shader_part(sscreen, &sscreen->gs_prologs, PIPE_SHADER_GEOMETRY, true, &prolog_key, tm, debug, si_build_gs_prolog_function, "Geometry Shader Prolog"); return shader->prolog2 != NULL; } /** * Build the pixel shader prolog function. This handles: * - two-side color selection and interpolation * - overriding interpolation parameters for the API PS * - polygon stippling * * All preloaded SGPRs and VGPRs are passed through unmodified unless they are * overriden by other states. (e.g. per-sample interpolation) * Interpolated colors are stored after the preloaded VGPRs. */ static void si_build_ps_prolog_function(struct si_shader_context *ctx, union si_shader_part_key *key) { struct gallivm_state *gallivm = &ctx->gallivm; LLVMTypeRef *params; LLVMValueRef ret, func; int last_sgpr, num_params, num_returns, i, num_color_channels; assert(si_need_ps_prolog(key)); /* Number of inputs + 8 color elements. */ params = alloca((key->ps_prolog.num_input_sgprs + key->ps_prolog.num_input_vgprs + 8) * sizeof(LLVMTypeRef)); /* Declare inputs. */ num_params = 0; for (i = 0; i < key->ps_prolog.num_input_sgprs; i++) params[num_params++] = ctx->i32; last_sgpr = num_params - 1; for (i = 0; i < key->ps_prolog.num_input_vgprs; i++) params[num_params++] = ctx->f32; /* Declare outputs (same as inputs + add colors if needed) */ num_returns = num_params; num_color_channels = util_bitcount(key->ps_prolog.colors_read); for (i = 0; i < num_color_channels; i++) params[num_returns++] = ctx->f32; /* Create the function. */ si_create_function(ctx, "ps_prolog", params, num_returns, params, num_params, last_sgpr, 0); func = ctx->main_fn; /* Copy inputs to outputs. This should be no-op, as the registers match, * but it will prevent the compiler from overwriting them unintentionally. */ ret = ctx->return_value; for (i = 0; i < num_params; i++) { LLVMValueRef p = LLVMGetParam(func, i); ret = LLVMBuildInsertValue(gallivm->builder, ret, p, i, ""); } /* Polygon stippling. */ if (key->ps_prolog.states.poly_stipple) { /* POS_FIXED_PT is always last. */ unsigned pos = key->ps_prolog.num_input_sgprs + key->ps_prolog.num_input_vgprs - 1; LLVMValueRef list = si_prolog_get_rw_buffers(ctx); si_llvm_emit_polygon_stipple(ctx, list, pos); } if (key->ps_prolog.states.bc_optimize_for_persp || key->ps_prolog.states.bc_optimize_for_linear) { unsigned i, base = key->ps_prolog.num_input_sgprs; LLVMValueRef center[2], centroid[2], tmp, bc_optimize; /* The shader should do: if (PRIM_MASK[31]) CENTROID = CENTER; * The hw doesn't compute CENTROID if the whole wave only * contains fully-covered quads. * * PRIM_MASK is after user SGPRs. */ bc_optimize = LLVMGetParam(func, SI_PS_NUM_USER_SGPR); bc_optimize = LLVMBuildLShr(gallivm->builder, bc_optimize, LLVMConstInt(ctx->i32, 31, 0), ""); bc_optimize = LLVMBuildTrunc(gallivm->builder, bc_optimize, ctx->i1, ""); if (key->ps_prolog.states.bc_optimize_for_persp) { /* Read PERSP_CENTER. */ for (i = 0; i < 2; i++) center[i] = LLVMGetParam(func, base + 2 + i); /* Read PERSP_CENTROID. */ for (i = 0; i < 2; i++) centroid[i] = LLVMGetParam(func, base + 4 + i); /* Select PERSP_CENTROID. */ for (i = 0; i < 2; i++) { tmp = LLVMBuildSelect(gallivm->builder, bc_optimize, center[i], centroid[i], ""); ret = LLVMBuildInsertValue(gallivm->builder, ret, tmp, base + 4 + i, ""); } } if (key->ps_prolog.states.bc_optimize_for_linear) { /* Read LINEAR_CENTER. */ for (i = 0; i < 2; i++) center[i] = LLVMGetParam(func, base + 8 + i); /* Read LINEAR_CENTROID. */ for (i = 0; i < 2; i++) centroid[i] = LLVMGetParam(func, base + 10 + i); /* Select LINEAR_CENTROID. */ for (i = 0; i < 2; i++) { tmp = LLVMBuildSelect(gallivm->builder, bc_optimize, center[i], centroid[i], ""); ret = LLVMBuildInsertValue(gallivm->builder, ret, tmp, base + 10 + i, ""); } } } /* Force per-sample interpolation. */ if (key->ps_prolog.states.force_persp_sample_interp) { unsigned i, base = key->ps_prolog.num_input_sgprs; LLVMValueRef persp_sample[2]; /* Read PERSP_SAMPLE. */ for (i = 0; i < 2; i++) persp_sample[i] = LLVMGetParam(func, base + i); /* Overwrite PERSP_CENTER. */ for (i = 0; i < 2; i++) ret = LLVMBuildInsertValue(gallivm->builder, ret, persp_sample[i], base + 2 + i, ""); /* Overwrite PERSP_CENTROID. */ for (i = 0; i < 2; i++) ret = LLVMBuildInsertValue(gallivm->builder, ret, persp_sample[i], base + 4 + i, ""); } if (key->ps_prolog.states.force_linear_sample_interp) { unsigned i, base = key->ps_prolog.num_input_sgprs; LLVMValueRef linear_sample[2]; /* Read LINEAR_SAMPLE. */ for (i = 0; i < 2; i++) linear_sample[i] = LLVMGetParam(func, base + 6 + i); /* Overwrite LINEAR_CENTER. */ for (i = 0; i < 2; i++) ret = LLVMBuildInsertValue(gallivm->builder, ret, linear_sample[i], base + 8 + i, ""); /* Overwrite LINEAR_CENTROID. */ for (i = 0; i < 2; i++) ret = LLVMBuildInsertValue(gallivm->builder, ret, linear_sample[i], base + 10 + i, ""); } /* Force center interpolation. */ if (key->ps_prolog.states.force_persp_center_interp) { unsigned i, base = key->ps_prolog.num_input_sgprs; LLVMValueRef persp_center[2]; /* Read PERSP_CENTER. */ for (i = 0; i < 2; i++) persp_center[i] = LLVMGetParam(func, base + 2 + i); /* Overwrite PERSP_SAMPLE. */ for (i = 0; i < 2; i++) ret = LLVMBuildInsertValue(gallivm->builder, ret, persp_center[i], base + i, ""); /* Overwrite PERSP_CENTROID. */ for (i = 0; i < 2; i++) ret = LLVMBuildInsertValue(gallivm->builder, ret, persp_center[i], base + 4 + i, ""); } if (key->ps_prolog.states.force_linear_center_interp) { unsigned i, base = key->ps_prolog.num_input_sgprs; LLVMValueRef linear_center[2]; /* Read LINEAR_CENTER. */ for (i = 0; i < 2; i++) linear_center[i] = LLVMGetParam(func, base + 8 + i); /* Overwrite LINEAR_SAMPLE. */ for (i = 0; i < 2; i++) ret = LLVMBuildInsertValue(gallivm->builder, ret, linear_center[i], base + 6 + i, ""); /* Overwrite LINEAR_CENTROID. */ for (i = 0; i < 2; i++) ret = LLVMBuildInsertValue(gallivm->builder, ret, linear_center[i], base + 10 + i, ""); } /* Interpolate colors. */ for (i = 0; i < 2; i++) { unsigned writemask = (key->ps_prolog.colors_read >> (i * 4)) & 0xf; unsigned face_vgpr = key->ps_prolog.num_input_sgprs + key->ps_prolog.face_vgpr_index; LLVMValueRef interp[2], color[4]; LLVMValueRef interp_ij = NULL, prim_mask = NULL, face = NULL; if (!writemask) continue; /* If the interpolation qualifier is not CONSTANT (-1). */ if (key->ps_prolog.color_interp_vgpr_index[i] != -1) { unsigned interp_vgpr = key->ps_prolog.num_input_sgprs + key->ps_prolog.color_interp_vgpr_index[i]; /* Get the (i,j) updated by bc_optimize handling. */ interp[0] = LLVMBuildExtractValue(gallivm->builder, ret, interp_vgpr, ""); interp[1] = LLVMBuildExtractValue(gallivm->builder, ret, interp_vgpr + 1, ""); interp_ij = lp_build_gather_values(gallivm, interp, 2); } /* Use the absolute location of the input. */ prim_mask = LLVMGetParam(func, SI_PS_NUM_USER_SGPR); if (key->ps_prolog.states.color_two_side) { face = LLVMGetParam(func, face_vgpr); face = LLVMBuildBitCast(gallivm->builder, face, ctx->i32, ""); } interp_fs_input(ctx, key->ps_prolog.color_attr_index[i], TGSI_SEMANTIC_COLOR, i, key->ps_prolog.num_interp_inputs, key->ps_prolog.colors_read, interp_ij, prim_mask, face, color); while (writemask) { unsigned chan = u_bit_scan(&writemask); ret = LLVMBuildInsertValue(gallivm->builder, ret, color[chan], num_params++, ""); } } /* Tell LLVM to insert WQM instruction sequence when needed. */ if (key->ps_prolog.wqm) { LLVMAddTargetDependentFunctionAttr(func, "amdgpu-ps-wqm-outputs", ""); } si_llvm_build_ret(ctx, ret); } /** * Build the pixel shader epilog function. This handles everything that must be * emulated for pixel shader exports. (alpha-test, format conversions, etc) */ static void si_build_ps_epilog_function(struct si_shader_context *ctx, union si_shader_part_key *key) { struct gallivm_state *gallivm = &ctx->gallivm; struct lp_build_tgsi_context *bld_base = &ctx->bld_base; LLVMTypeRef params[16+8*4+3]; LLVMValueRef depth = NULL, stencil = NULL, samplemask = NULL; int last_sgpr, num_params = 0, i; struct si_ps_exports exp = {}; /* Declare input SGPRs. */ params[ctx->param_rw_buffers = num_params++] = ctx->i64; params[ctx->param_const_and_shader_buffers = num_params++] = ctx->i64; params[ctx->param_samplers_and_images = num_params++] = ctx->i64; assert(num_params == SI_PARAM_ALPHA_REF); params[SI_PARAM_ALPHA_REF] = ctx->f32; last_sgpr = SI_PARAM_ALPHA_REF; /* Declare input VGPRs. */ num_params = (last_sgpr + 1) + util_bitcount(key->ps_epilog.colors_written) * 4 + key->ps_epilog.writes_z + key->ps_epilog.writes_stencil + key->ps_epilog.writes_samplemask; num_params = MAX2(num_params, last_sgpr + 1 + PS_EPILOG_SAMPLEMASK_MIN_LOC + 1); assert(num_params <= ARRAY_SIZE(params)); for (i = last_sgpr + 1; i < num_params; i++) params[i] = ctx->f32; /* Create the function. */ si_create_function(ctx, "ps_epilog", NULL, 0, params, num_params, last_sgpr, 0); /* Disable elimination of unused inputs. */ si_llvm_add_attribute(ctx->main_fn, "InitialPSInputAddr", 0xffffff); /* Process colors. */ unsigned vgpr = last_sgpr + 1; unsigned colors_written = key->ps_epilog.colors_written; int last_color_export = -1; /* Find the last color export. */ if (!key->ps_epilog.writes_z && !key->ps_epilog.writes_stencil && !key->ps_epilog.writes_samplemask) { unsigned spi_format = key->ps_epilog.states.spi_shader_col_format; /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */ if (colors_written == 0x1 && key->ps_epilog.states.last_cbuf > 0) { /* Just set this if any of the colorbuffers are enabled. */ if (spi_format & ((1llu << (4 * (key->ps_epilog.states.last_cbuf + 1))) - 1)) last_color_export = 0; } else { for (i = 0; i < 8; i++) if (colors_written & (1 << i) && (spi_format >> (i * 4)) & 0xf) last_color_export = i; } } while (colors_written) { LLVMValueRef color[4]; int mrt = u_bit_scan(&colors_written); for (i = 0; i < 4; i++) color[i] = LLVMGetParam(ctx->main_fn, vgpr++); si_export_mrt_color(bld_base, color, mrt, num_params - 1, mrt == last_color_export, &exp); } /* Process depth, stencil, samplemask. */ if (key->ps_epilog.writes_z) depth = LLVMGetParam(ctx->main_fn, vgpr++); if (key->ps_epilog.writes_stencil) stencil = LLVMGetParam(ctx->main_fn, vgpr++); if (key->ps_epilog.writes_samplemask) samplemask = LLVMGetParam(ctx->main_fn, vgpr++); if (depth || stencil || samplemask) si_export_mrt_z(bld_base, depth, stencil, samplemask, &exp); else if (last_color_export == -1) si_export_null(bld_base); if (exp.num) si_emit_ps_exports(ctx, &exp); /* Compile. */ LLVMBuildRetVoid(gallivm->builder); } /** * Select and compile (or reuse) pixel shader parts (prolog & epilog). */ static bool si_shader_select_ps_parts(struct si_screen *sscreen, LLVMTargetMachineRef tm, struct si_shader *shader, struct pipe_debug_callback *debug) { union si_shader_part_key prolog_key; union si_shader_part_key epilog_key; /* Get the prolog. */ si_get_ps_prolog_key(shader, &prolog_key, true); /* The prolog is a no-op if these aren't set. */ if (si_need_ps_prolog(&prolog_key)) { shader->prolog = si_get_shader_part(sscreen, &sscreen->ps_prologs, PIPE_SHADER_FRAGMENT, true, &prolog_key, tm, debug, si_build_ps_prolog_function, "Fragment Shader Prolog"); if (!shader->prolog) return false; } /* Get the epilog. */ si_get_ps_epilog_key(shader, &epilog_key); shader->epilog = si_get_shader_part(sscreen, &sscreen->ps_epilogs, PIPE_SHADER_FRAGMENT, false, &epilog_key, tm, debug, si_build_ps_epilog_function, "Fragment Shader Epilog"); if (!shader->epilog) return false; /* Enable POS_FIXED_PT if polygon stippling is enabled. */ if (shader->key.part.ps.prolog.poly_stipple) { shader->config.spi_ps_input_ena |= S_0286CC_POS_FIXED_PT_ENA(1); assert(G_0286CC_POS_FIXED_PT_ENA(shader->config.spi_ps_input_addr)); } /* Set up the enable bits for per-sample shading if needed. */ if (shader->key.part.ps.prolog.force_persp_sample_interp && (G_0286CC_PERSP_CENTER_ENA(shader->config.spi_ps_input_ena) || G_0286CC_PERSP_CENTROID_ENA(shader->config.spi_ps_input_ena))) { shader->config.spi_ps_input_ena &= C_0286CC_PERSP_CENTER_ENA; shader->config.spi_ps_input_ena &= C_0286CC_PERSP_CENTROID_ENA; shader->config.spi_ps_input_ena |= S_0286CC_PERSP_SAMPLE_ENA(1); } if (shader->key.part.ps.prolog.force_linear_sample_interp && (G_0286CC_LINEAR_CENTER_ENA(shader->config.spi_ps_input_ena) || G_0286CC_LINEAR_CENTROID_ENA(shader->config.spi_ps_input_ena))) { shader->config.spi_ps_input_ena &= C_0286CC_LINEAR_CENTER_ENA; shader->config.spi_ps_input_ena &= C_0286CC_LINEAR_CENTROID_ENA; shader->config.spi_ps_input_ena |= S_0286CC_LINEAR_SAMPLE_ENA(1); } if (shader->key.part.ps.prolog.force_persp_center_interp && (G_0286CC_PERSP_SAMPLE_ENA(shader->config.spi_ps_input_ena) || G_0286CC_PERSP_CENTROID_ENA(shader->config.spi_ps_input_ena))) { shader->config.spi_ps_input_ena &= C_0286CC_PERSP_SAMPLE_ENA; shader->config.spi_ps_input_ena &= C_0286CC_PERSP_CENTROID_ENA; shader->config.spi_ps_input_ena |= S_0286CC_PERSP_CENTER_ENA(1); } if (shader->key.part.ps.prolog.force_linear_center_interp && (G_0286CC_LINEAR_SAMPLE_ENA(shader->config.spi_ps_input_ena) || G_0286CC_LINEAR_CENTROID_ENA(shader->config.spi_ps_input_ena))) { shader->config.spi_ps_input_ena &= C_0286CC_LINEAR_SAMPLE_ENA; shader->config.spi_ps_input_ena &= C_0286CC_LINEAR_CENTROID_ENA; shader->config.spi_ps_input_ena |= S_0286CC_LINEAR_CENTER_ENA(1); } /* POW_W_FLOAT requires that one of the perspective weights is enabled. */ if (G_0286CC_POS_W_FLOAT_ENA(shader->config.spi_ps_input_ena) && !(shader->config.spi_ps_input_ena & 0xf)) { shader->config.spi_ps_input_ena |= S_0286CC_PERSP_CENTER_ENA(1); assert(G_0286CC_PERSP_CENTER_ENA(shader->config.spi_ps_input_addr)); } /* At least one pair of interpolation weights must be enabled. */ if (!(shader->config.spi_ps_input_ena & 0x7f)) { shader->config.spi_ps_input_ena |= S_0286CC_LINEAR_CENTER_ENA(1); assert(G_0286CC_LINEAR_CENTER_ENA(shader->config.spi_ps_input_addr)); } /* The sample mask input is always enabled, because the API shader always * passes it through to the epilog. Disable it here if it's unused. */ if (!shader->key.part.ps.epilog.poly_line_smoothing && !shader->selector->info.reads_samplemask) shader->config.spi_ps_input_ena &= C_0286CC_SAMPLE_COVERAGE_ENA; return true; } void si_multiwave_lds_size_workaround(struct si_screen *sscreen, unsigned *lds_size) { /* SPI barrier management bug: * Make sure we have at least 4k of LDS in use to avoid the bug. * It applies to workgroup sizes of more than one wavefront. */ if (sscreen->b.family == CHIP_BONAIRE || sscreen->b.family == CHIP_KABINI || sscreen->b.family == CHIP_MULLINS) *lds_size = MAX2(*lds_size, 8); } static void si_fix_resource_usage(struct si_screen *sscreen, struct si_shader *shader) { unsigned min_sgprs = shader->info.num_input_sgprs + 2; /* VCC */ shader->config.num_sgprs = MAX2(shader->config.num_sgprs, min_sgprs); if (shader->selector->type == PIPE_SHADER_COMPUTE && si_get_max_workgroup_size(shader) > 64) { si_multiwave_lds_size_workaround(sscreen, &shader->config.lds_size); } } int si_shader_create(struct si_screen *sscreen, LLVMTargetMachineRef tm, struct si_shader *shader, struct pipe_debug_callback *debug) { struct si_shader_selector *sel = shader->selector; struct si_shader *mainp = *si_get_main_shader_part(sel, &shader->key); int r; /* LS, ES, VS are compiled on demand if the main part hasn't been * compiled for that stage. * * Vertex shaders are compiled on demand when a vertex fetch * workaround must be applied. */ if (shader->is_monolithic) { /* Monolithic shader (compiled as a whole, has many variants, * may take a long time to compile). */ r = si_compile_tgsi_shader(sscreen, tm, shader, true, debug); if (r) return r; } else { /* The shader consists of 2-3 parts: * * - the middle part is the user shader, it has 1 variant only * and it was compiled during the creation of the shader * selector * - the prolog part is inserted at the beginning * - the epilog part is inserted at the end * * The prolog and epilog have many (but simple) variants. */ /* Copy the compiled TGSI shader data over. */ shader->is_binary_shared = true; shader->binary = mainp->binary; shader->config = mainp->config; shader->info.num_input_sgprs = mainp->info.num_input_sgprs; shader->info.num_input_vgprs = mainp->info.num_input_vgprs; shader->info.face_vgpr_index = mainp->info.face_vgpr_index; memcpy(shader->info.vs_output_param_offset, mainp->info.vs_output_param_offset, sizeof(mainp->info.vs_output_param_offset)); shader->info.uses_instanceid = mainp->info.uses_instanceid; shader->info.nr_pos_exports = mainp->info.nr_pos_exports; shader->info.nr_param_exports = mainp->info.nr_param_exports; /* Select prologs and/or epilogs. */ switch (sel->type) { case PIPE_SHADER_VERTEX: if (!si_shader_select_vs_parts(sscreen, tm, shader, debug)) return -1; break; case PIPE_SHADER_TESS_CTRL: if (!si_shader_select_tcs_parts(sscreen, tm, shader, debug)) return -1; break; case PIPE_SHADER_TESS_EVAL: break; case PIPE_SHADER_GEOMETRY: if (!si_shader_select_gs_parts(sscreen, tm, shader, debug)) return -1; break; case PIPE_SHADER_FRAGMENT: if (!si_shader_select_ps_parts(sscreen, tm, shader, debug)) return -1; /* Make sure we have at least as many VGPRs as there * are allocated inputs. */ shader->config.num_vgprs = MAX2(shader->config.num_vgprs, shader->info.num_input_vgprs); break; } /* Update SGPR and VGPR counts. */ if (shader->prolog) { shader->config.num_sgprs = MAX2(shader->config.num_sgprs, shader->prolog->config.num_sgprs); shader->config.num_vgprs = MAX2(shader->config.num_vgprs, shader->prolog->config.num_vgprs); } if (shader->previous_stage) { shader->config.num_sgprs = MAX2(shader->config.num_sgprs, shader->previous_stage->config.num_sgprs); shader->config.num_vgprs = MAX2(shader->config.num_vgprs, shader->previous_stage->config.num_vgprs); shader->config.spilled_sgprs = MAX2(shader->config.spilled_sgprs, shader->previous_stage->config.spilled_sgprs); shader->config.spilled_vgprs = MAX2(shader->config.spilled_vgprs, shader->previous_stage->config.spilled_vgprs); shader->config.private_mem_vgprs = MAX2(shader->config.private_mem_vgprs, shader->previous_stage->config.private_mem_vgprs); shader->config.scratch_bytes_per_wave = MAX2(shader->config.scratch_bytes_per_wave, shader->previous_stage->config.scratch_bytes_per_wave); shader->info.uses_instanceid |= shader->previous_stage->info.uses_instanceid; } if (shader->prolog2) { shader->config.num_sgprs = MAX2(shader->config.num_sgprs, shader->prolog2->config.num_sgprs); shader->config.num_vgprs = MAX2(shader->config.num_vgprs, shader->prolog2->config.num_vgprs); } if (shader->epilog) { shader->config.num_sgprs = MAX2(shader->config.num_sgprs, shader->epilog->config.num_sgprs); shader->config.num_vgprs = MAX2(shader->config.num_vgprs, shader->epilog->config.num_vgprs); } } si_fix_resource_usage(sscreen, shader); si_shader_dump(sscreen, shader, debug, sel->info.processor, stderr, true); /* Upload. */ r = si_shader_binary_upload(sscreen, shader); if (r) { fprintf(stderr, "LLVM failed to upload shader\n"); return r; } return 0; } void si_shader_destroy(struct si_shader *shader) { if (shader->scratch_bo) r600_resource_reference(&shader->scratch_bo, NULL); r600_resource_reference(&shader->bo, NULL); if (!shader->is_binary_shared) radeon_shader_binary_clean(&shader->binary); free(shader->shader_log); }