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_PHOTONMAP_H 00037 #define PBRT_INTEGRATORS_PHOTONMAP_H 00038 00039 // integrators/photonmap.h* 00040 #include "pbrt.h" 00041 #include "integrator.h" 00042 #include "kdtree.h" 00043 00044 struct Photon; 00045 struct RadiancePhoton; 00046 struct ClosePhoton; 00047 struct PhotonProcess; 00048 struct RadiancePhotonProcess; 00049 00050 00051 // PhotonIntegrator Declarations 00052 class PhotonIntegrator : public SurfaceIntegrator { 00053 public: 00054 // PhotonIntegrator Public Methods 00055 PhotonIntegrator(int ncaus, int nindir, int nLookup, int maxspecdepth, 00056 int maxphotondepth, float maxdist, bool finalGather, int gatherSamples, 00057 float ga); 00058 ~PhotonIntegrator(); 00059 Spectrum Li(const Scene *scene, const Renderer *renderer, 00060 const RayDifferential &ray, const Intersection &isect, const Sample *sample, 00061 RNG &rng, MemoryArena &arena) const; 00062 void RequestSamples(Sampler *sampler, Sample *sample, const Scene *scene); 00063 void Preprocess(const Scene *scene, const Camera *camera, const Renderer *renderer); 00064 private: 00065 // PhotonIntegrator Private Methods 00066 friend class PhotonShootingTask; 00067 00068 // PhotonIntegrator Private Data 00069 uint32_t nCausticPhotonsWanted, nIndirectPhotonsWanted, nLookup; 00070 float maxDistSquared; 00071 int maxSpecularDepth, maxPhotonDepth; 00072 bool finalGather; 00073 int gatherSamples; 00074 float cosGatherAngle; 00075 00076 // Declare sample parameters for light source sampling 00077 LightSampleOffsets *lightSampleOffsets; 00078 BSDFSampleOffsets *bsdfSampleOffsets; 00079 BSDFSampleOffsets bsdfGatherSampleOffsets, indirGatherSampleOffsets; 00080 int nCausticPaths, nIndirectPaths; 00081 KdTree<Photon> *causticMap; 00082 KdTree<Photon> *indirectMap; 00083 KdTree<RadiancePhoton> *radianceMap; 00084 }; 00085 00086 00087 PhotonIntegrator *CreatePhotonMapSurfaceIntegrator(const ParamSet ¶ms); 00088 00089 #endif // PBRT_INTEGRATORS_PHOTONMAP_H