ELF>@@ #line 2 "materialdefs_funcs_metal2.cl" /*************************************************************************** * Copyright 1998-2013 by authors (see AUTHORS.txt) * * * * This file is part of LuxRender. * * * * Licensed under the Apache License, Version 2.0 (the "License"); * * you may not use this file except in compliance with the License. * * You may obtain a copy of the License at * * * * http://www.apache.org/licenses/LICENSE-2.0 * * * * Unless required by applicable law or agreed to in writing, software * * distributed under the License is distributed on an "AS IS" BASIS, * * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.* * See the License for the specific language governing permissions and * * limitations under the License. * ***************************************************************************/ //------------------------------------------------------------------------------ // Metal2 material // // LuxRender Metal2 material porting. //------------------------------------------------------------------------------ #if defined (PARAM_ENABLE_MAT_METAL2) float3 Metal2Material_Evaluate(__global Material *material, __global HitPoint *hitPoint, const float3 lightDir, const float3 eyeDir, BSDFEvent *event, float *directPdfW TEXTURES_PARAM_DECL) { const float u = clamp(Texture_GetFloatValue(&texs[material->metal2.nuTexIndex], hitPoint TEXTURES_PARAM), 6e-3f, 1.f); #if defined(PARAM_ENABLE_MAT_METAL2_ANISOTROPIC) const float v = clamp(Texture_GetFloatValue(&texs[material->metal2.nvTexIndex], hitPoint TEXTURES_PARAM), 6e-3f, 1.f); const float u2 = u * u; const float v2 = v * v; const float anisotropy = (u2 < v2) ? (1.f - u2 / v2) : (v2 / u2 - 1.f); const float roughness = u * v; #else const float anisotropy = 0.f; const float roughness = u * u; #endif const float3 wh = normalize(lightDir + eyeDir); const float cosWH = dot(lightDir, wh); if (directPdfW) *directPdfW = SchlickDistribution_Pdf(roughness, wh, anisotropy) / (4.f * cosWH); const float3 nVal = Texture_GetSpectrumValue(&texs[material->metal2.nTexIndex], hitPoint TEXTURES_PARAM); const float3 kVal = Texture_GetSpectrumValue(&texs[material->metal2.kTexIndex], hitPoint TEXTURES_PARAM); const float3 F = FresnelGeneral_Evaluate(nVal, kVal, cosWH); const float G = SchlickDistribution_G(roughness, lightDir, eyeDir); *event = GLOSSY | REFLECT; return SchlickDistribution_D(roughness, wh, anisotropy) * G / (4.f * fabs(eyeDir.z)) * F; } float3 Metal2Material_Sample(__global Material *material, __global HitPoint *hitPoint, const float3 fixedDir, float3 *sampledDir, const float u0, const float u1, float *pdfW, float *cosSampledDir, BSDFEvent *event, const BSDFEvent requestedEvent TEXTURES_PARAM_DECL) { if (!(requestedEvent & (GLOSSY | REFLECT)) || (fabs(fixedDir.z) < DEFAULT_COS_EPSILON_STATIC)) return BLACK; const float u = clamp(Texture_GetFloatValue(&texs[material->metal2.nuTexIndex], hitPoint TEXTURES_PARAM), 6e-3f, 1.f); #if defined(PARAM_ENABLE_MAT_METAL2_ANISOTROPIC) const float v = clamp(Texture_GetFloatValue(&texs[material->metal2.nvTexIndex], hitPoint TEXTURES_PARAM), 6e-3f, 1.f); const float u2 = u * u; const float v2 = v * v; const float anisotropy = (u2 < v2) ? (1.f - u2 / v2) : (v2 / u2 - 1.f); const float roughness = u * v; #else const float anisotropy = 0.f; const float roughness = u * u; #endif float3 wh; float d, specPdf; SchlickDistribution_SampleH(roughness, anisotropy, u0, u1, &wh, &d, &specPdf); const float cosWH = dot(fixedDir, wh); *sampledDir = 2.f * cosWH * wh - fixedDir; const float coso = fabs(fixedDir.z); const float cosi = fabs((*sampledDir).z); *cosSampledDir = cosi; if ((*cosSampledDir < DEFAULT_COS_EPSILON_STATIC) || (fixedDir.z * (*sampledDir).z < 0.f)) return BLACK; *pdfW = specPdf / (4.f * fabs(cosWH)); if (*pdfW <= 0.f) return BLACK; const float G = SchlickDistribution_G(roughness, fixedDir, *sampledDir); const float3 nVal = Texture_GetSpectrumValue(&texs[material->metal2.nTexIndex], hitPoint TEXTURES_PARAM); const float3 kVal = Texture_GetSpectrumValue(&texs[material->metal2.kTexIndex], hitPoint TEXTURES_PARAM); const float3 F = FresnelGeneral_Evaluate(nVal, kVal, cosWH); float factor = (d / *pdfW) * G * fabs(cosWH); //if (!fromLight) factor /= 4.f * coso; //else // factor /= cosi; *event = GLOSSY | REFLECT; return factor * F; } #endif SH5HHHT$HH=HHH[GCC: (GNU) 4.7.1zRx <AK nA.symtab.strtab.shstrtab.text.data.bss.rodata.str1.8.rela.text.startup.rela.ctors.comment.note.GNU-stack.rela.eh_frame@!@'@,2@T@< ;pSNZ0cx8s 8  &<  Z _umaterialdefs_funcs_metal2_kernel.cpp_GLOBAL__sub_I_materialdefs_funcs_metal2_kernel.cpp.LC0_GLOBAL_OFFSET_TABLE__ZN3slg3ocl38KernelSource_materialdefs_funcs_metal2E_ZNSsC1EPKcRKSaIcE_ZNSsD1Ev__dso_handle__cxa_atexit  # -2