PBRT
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00001 00002 /* 00003 pbrt source code Copyright(c) 1998-2012 Matt Pharr and Greg Humphreys. 00004 00005 This file is part of pbrt. 00006 00007 Redistribution and use in source and binary forms, with or without 00008 modification, are permitted provided that the following conditions are 00009 met: 00010 00011 - Redistributions of source code must retain the above copyright 00012 notice, this list of conditions and the following disclaimer. 00013 00014 - Redistributions in binary form must reproduce the above copyright 00015 notice, this list of conditions and the following disclaimer in the 00016 documentation and/or other materials provided with the distribution. 00017 00018 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 00019 IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 00020 TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 00021 PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 00022 HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00023 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 00024 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00025 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 00026 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00027 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00028 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00029 00030 */ 00031 00032 #if defined(_MSC_VER) 00033 #pragma once 00034 #endif 00035 00036 #ifndef PBRT_INTEGRATORS_USEPROBES_H 00037 #define PBRT_INTEGRATORS_USEPROBES_H 00038 00039 // integrators/useprobes.h* 00040 #include "pbrt.h" 00041 #include "integrator.h" 00042 #include "sh.h" 00043 00044 // UseRadianceProbes Declarations 00045 class UseRadianceProbes : public SurfaceIntegrator { 00046 public: 00047 // UseRadianceProbes Public Methods 00048 UseRadianceProbes(const string &filename); 00049 ~UseRadianceProbes(); 00050 void RequestSamples(Sampler *sampler, Sample *sample, const Scene *scene); 00051 Spectrum Li(const Scene *scene, const Renderer *, 00052 const RayDifferential &ray, const Intersection &isect, 00053 const Sample *sample, RNG &rng, MemoryArena &arena) const; 00054 private: 00055 // UseRadianceProbes Private Methods 00056 const Spectrum *c_inXYZ(int lmax, int vx, int vy, int vz) const { 00057 vx = Clamp(vx, 0, nProbes[0]-1); 00058 vy = Clamp(vy, 0, nProbes[1]-1); 00059 vz = Clamp(vz, 0, nProbes[2]-1); 00060 int offset = vx + vy * nProbes[0] + vz * nProbes[0] * nProbes[1]; 00061 return &c_in[SHTerms(lmax) * offset]; 00062 } 00063 00064 // UseRadianceProbes Private Data 00065 BBox bbox; 00066 int lmax, includeDirectInProbes, includeIndirectInProbes; 00067 int nProbes[3]; 00068 Spectrum *c_in; 00069 00070 // Declare sample parameters for light source sampling 00071 LightSampleOffsets *lightSampleOffsets; 00072 BSDFSampleOffsets *bsdfSampleOffsets; 00073 }; 00074 00075 00076 extern UseRadianceProbes *CreateRadianceProbesSurfaceIntegrator(const ParamSet ¶mSet); 00077 00078 #endif // PBRT_INTEGRATORS_USEPROBES_H