/* * Mesa 3-D graphics library * * Copyright (C) 2014 Intel Corporation All Rights Reserved. * * 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 * the rights to use, copy, modify, merge, publish, distribute, sublicense, * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS 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: * Jason Ekstrand */ #include "intel_tex.h" #include "intel_blit.h" #include "intel_mipmap_tree.h" #include "main/formats.h" #include "drivers/common/meta.h" static bool copy_image_with_blitter(struct brw_context *brw, struct intel_mipmap_tree *src_mt, int src_level, int src_x, int src_y, int src_z, struct intel_mipmap_tree *dst_mt, int dst_level, int dst_x, int dst_y, int dst_z, int src_width, int src_height) { GLuint bw, bh; int cpp; /* The blitter doesn't understand multisampling at all. */ if (src_mt->num_samples > 0 || dst_mt->num_samples > 0) return false; /* According to the Ivy Bridge PRM, Vol1 Part4, section 1.2.1.2 (Graphics * Data Size Limitations): * * The BLT engine is capable of transferring very large quantities of * graphics data. Any graphics data read from and written to the * destination is permitted to represent a number of pixels that * occupies up to 65,536 scan lines and up to 32,768 bytes per scan line * at the destination. The maximum number of pixels that may be * represented per scan line’s worth of graphics data depends on the * color depth. * * Furthermore, intelEmitCopyBlit (which is called below) uses a signed * 16-bit integer to represent buffer pitch, so it can only handle buffer * pitches < 32k. * * As a result of these two limitations, we can only use the blitter to do * this copy when the miptree's pitch is less than 32k. */ if (src_mt->pitch >= 32768 || dst_mt->pitch >= 32768) { perf_debug("Falling back due to >=32k pitch\n"); return false; } if (_mesa_is_format_compressed(src_mt->format)) { _mesa_get_format_block_size(src_mt->format, &bw, &bh); assert(src_x % bw == 0); assert(src_y % bw == 0); assert(src_width % bw == 0); assert(src_height % bw == 0); src_x /= (int)bw; src_y /= (int)bw; src_width /= (int)bw; src_height /= (int)bw; cpp = _mesa_get_format_bytes(src_mt->format); } else { cpp = src_mt->cpp; } if (_mesa_is_format_compressed(dst_mt->format)) { _mesa_get_format_block_size(dst_mt->format, &bw, &bh); assert(dst_x % bw == 0); assert(dst_y % bw == 0); dst_x /= (int)bw; dst_y /= (int)bw; } uint32_t src_image_x, src_image_y; intel_miptree_get_image_offset(src_mt, src_level, src_z, &src_image_x, &src_image_y); src_x += src_image_x; src_y += src_image_y; uint32_t dst_image_x, dst_image_y; intel_miptree_get_image_offset(dst_mt, dst_level, dst_z, &dst_image_x, &dst_image_y); dst_x += dst_image_x; dst_y += dst_image_y; return intelEmitCopyBlit(brw, cpp, src_mt->pitch, src_mt->bo, src_mt->offset, src_mt->tiling, dst_mt->pitch, dst_mt->bo, dst_mt->offset, dst_mt->tiling, src_x, src_y, dst_x, dst_y, src_width, src_height, GL_COPY); } static void copy_image_with_memcpy(struct brw_context *brw, struct intel_mipmap_tree *src_mt, int src_level, int src_x, int src_y, int src_z, struct intel_mipmap_tree *dst_mt, int dst_level, int dst_x, int dst_y, int dst_z, int src_width, int src_height) { bool same_slice; uint8_t *mapped, *src_mapped, *dst_mapped; int src_stride, dst_stride, i, cpp; int map_x1, map_y1, map_x2, map_y2; GLuint src_bw, src_bh; cpp = _mesa_get_format_bytes(src_mt->format); _mesa_get_format_block_size(src_mt->format, &src_bw, &src_bh); assert(src_width % src_bw == 0); assert(src_height % src_bw == 0); assert(src_x % src_bw == 0); assert(src_y % src_bw == 0); /* If we are on the same miptree, same level, and same slice, then * intel_miptree_map won't let us map it twice. We have to do things a * bit differently. In particular, we do a single map large enough for * both portions and in read-write mode. */ same_slice = src_mt == dst_mt && src_level == dst_level && src_z == dst_z; if (same_slice) { assert(dst_x % src_bw == 0); assert(dst_y % src_bw == 0); map_x1 = MIN2(src_x, dst_x); map_y1 = MIN2(src_y, dst_y); map_x2 = MAX2(src_x, dst_x) + src_width; map_y2 = MAX2(src_y, dst_y) + src_height; intel_miptree_map(brw, src_mt, src_level, src_z, map_x1, map_y1, map_x2 - map_x1, map_y2 - map_y1, GL_MAP_READ_BIT | GL_MAP_WRITE_BIT, (void **)&mapped, &src_stride); dst_stride = src_stride; /* Set the offsets here so we don't have to think about while looping */ src_mapped = mapped + ((src_y - map_y1) / src_bh) * src_stride + ((src_x - map_x1) / src_bw) * cpp; dst_mapped = mapped + ((dst_y - map_y1) / src_bh) * dst_stride + ((dst_x - map_x1) / src_bw) * cpp; } else { intel_miptree_map(brw, src_mt, src_level, src_z, src_x, src_y, src_width, src_height, GL_MAP_READ_BIT, (void **)&src_mapped, &src_stride); intel_miptree_map(brw, dst_mt, dst_level, dst_z, dst_x, dst_y, src_width, src_height, GL_MAP_WRITE_BIT, (void **)&dst_mapped, &dst_stride); } src_width /= (int)src_bw; src_height /= (int)src_bh; for (i = 0; i < src_height; ++i) { memcpy(dst_mapped, src_mapped, src_width * cpp); src_mapped += src_stride; dst_mapped += dst_stride; } if (same_slice) { intel_miptree_unmap(brw, src_mt, src_level, src_z); } else { intel_miptree_unmap(brw, dst_mt, dst_level, dst_z); intel_miptree_unmap(brw, src_mt, src_level, src_z); } } static void intel_copy_image_sub_data(struct gl_context *ctx, struct gl_texture_image *src_image, int src_x, int src_y, int src_z, struct gl_texture_image *dst_image, int dst_x, int dst_y, int dst_z, int src_width, int src_height) { struct brw_context *brw = brw_context(ctx); struct intel_texture_image *intel_src_image = intel_texture_image(src_image); struct intel_texture_image *intel_dst_image = intel_texture_image(dst_image); if (_mesa_meta_CopyImageSubData_uncompressed(ctx, src_image, src_x, src_y, src_z, dst_image, dst_x, dst_y, dst_z, src_width, src_height)) { return; } if (intel_src_image->mt->num_samples > 0 || intel_dst_image->mt->num_samples > 0) { _mesa_problem(ctx, "Failed to copy multisampled texture with meta path\n"); return; } /* Cube maps actually have different images per face */ if (src_image->TexObject->Target == GL_TEXTURE_CUBE_MAP) src_z = src_image->Face; if (dst_image->TexObject->Target == GL_TEXTURE_CUBE_MAP) dst_z = dst_image->Face; /* We are now going to try and copy the texture using the blitter. If * that fails, we will fall back mapping the texture and using memcpy. * In either case, we need to do a full resolve. */ intel_miptree_all_slices_resolve_hiz(brw, intel_src_image->mt); intel_miptree_all_slices_resolve_depth(brw, intel_src_image->mt); intel_miptree_resolve_color(brw, intel_src_image->mt); intel_miptree_all_slices_resolve_hiz(brw, intel_dst_image->mt); intel_miptree_all_slices_resolve_depth(brw, intel_dst_image->mt); intel_miptree_resolve_color(brw, intel_dst_image->mt); if (copy_image_with_blitter(brw, intel_src_image->mt, src_image->Level, src_x, src_y, src_z, intel_dst_image->mt, src_image->Level, dst_x, dst_y, dst_z, src_width, src_height)) return; /* This is a worst-case scenario software fallback that maps the two * textures and does a memcpy between them. */ copy_image_with_memcpy(brw, intel_src_image->mt, src_image->Level, src_x, src_y, src_z, intel_dst_image->mt, src_image->Level, dst_x, dst_y, dst_z, src_width, src_height); } void intelInitCopyImageFuncs(struct dd_function_table *functions) { functions->CopyImageSubData = intel_copy_image_sub_data; }