ELF> @@ #line 2 "materialdefs_funcs_velvet.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. * ***************************************************************************/ //------------------------------------------------------------------------------ // Velvet material //------------------------------------------------------------------------------ #if defined (PARAM_ENABLE_MAT_VELVET) float3 VelvetMaterial_Evaluate(__global Material *material, __global HitPoint *hitPoint, const float3 lightDir, const float3 eyeDir, BSDFEvent *event, float *directPdfW TEXTURES_PARAM_DECL) { if (directPdfW) *directPdfW = fabs(lightDir.z * M_1_PI_F); *event = DIFFUSE | REFLECT; const float3 kd = Spectrum_Clamp(Texture_GetSpectrumValue(&texs[material->velvet.kdTexIndex], hitPoint TEXTURES_PARAM)); const float A1 = Texture_GetFloatValue(&texs[material->velvet.p1TexIndex], hitPoint TEXTURES_PARAM); const float A2 = Texture_GetFloatValue(&texs[material->velvet.p2TexIndex], hitPoint TEXTURES_PARAM); const float A3 = Texture_GetFloatValue(&texs[material->velvet.p3TexIndex], hitPoint TEXTURES_PARAM); const float delta = Texture_GetFloatValue(&texs[material->velvet.thicknessTexIndex], hitPoint TEXTURES_PARAM); const float cosv = -dot(lightDir, eyeDir); // Compute phase function const float B = 3.0f * cosv; float p = 1.0f + A1 * cosv + A2 * 0.5f * (B * cosv - 1.0f) + A3 * 0.5 * (5.0f * cosv * cosv * cosv - B); p = p / (4.0f * M_PI_F); p = (p * delta) / fabs(eyeDir.z); // Clamp the BRDF (page 7) if (p > 1.0f) p = 1.0f; else if (p < 0.0f) p = 0.0f; return p * kd; } float3 VelvetMaterial_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 & (DIFFUSE | REFLECT)) || (fabs(fixedDir.z) < DEFAULT_COS_EPSILON_STATIC)) return BLACK; *sampledDir = (signbit(fixedDir.z) ? -1.f : 1.f) * CosineSampleHemisphereWithPdf(u0, u1, pdfW); *cosSampledDir = fabs((*sampledDir).z); if (*cosSampledDir < DEFAULT_COS_EPSILON_STATIC) return BLACK; *event = DIFFUSE | REFLECT; const float3 kd = Spectrum_Clamp(Texture_GetSpectrumValue(&texs[material->velvet.kdTexIndex], hitPoint TEXTURES_PARAM)); const float A1 = Texture_GetFloatValue(&texs[material->velvet.p1TexIndex], hitPoint TEXTURES_PARAM); const float A2 = Texture_GetFloatValue(&texs[material->velvet.p2TexIndex], hitPoint TEXTURES_PARAM); const float A3 = Texture_GetFloatValue(&texs[material->velvet.p3TexIndex], hitPoint TEXTURES_PARAM); const float delta = Texture_GetFloatValue(&texs[material->velvet.thicknessTexIndex], hitPoint TEXTURES_PARAM); const float cosv = dot(-fixedDir, *sampledDir);; // Compute phase function const float B = 3.0f * cosv; float p = 1.0f + A1 * cosv + A2 * 0.5f * (B * cosv - 1.0f) + A3 * 0.5 * (5.0f * cosv * cosv * cosv - B); p = p / (4.0f * M_PI_F); p = (p * delta) / fabs(fixedDir.z); // Clamp the BRDF (page 7) if (p > 1.0f) p = 1.0f; else if (p < 0.0f) p = 0.0f; return kd * (p / *pdfW); } #endif SH5HƒìH‹HT$H‰ßèH‹=H‰ÞHèHƒÄ[ÃGCC: (GNU) 4.7.1zRx <AƒK nA.symtab.strtab.shstrtab.text.data.bss.rodata.str1.8.rela.text.startup.rela.ctors.comment.note.GNU-stack.rela.eh_frame@!@'@,2@6@€< ;PSÀNàZ0ÈcÚxà8sø ‚ È  háñÿ&<  Z _uª½ÇÔmaterialdefs_funcs_velvet_kernel.cpp_GLOBAL__sub_I_materialdefs_funcs_velvet_kernel.cpp.LC0_GLOBAL_OFFSET_TABLE__ZN3slg3ocl38KernelSource_materialdefs_funcs_velvetE_ZNSsC1EPKcRKSaIcE_ZNSsD1Ev__dso_handle__cxa_atexit üÿÿÿÿÿÿÿ üÿÿÿÿÿÿÿüÿÿÿÿÿÿÿ# üÿÿÿÿÿÿÿ-üÿÿÿÿÿÿÿ2üÿÿÿÿÿÿÿ