| 1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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| 2 | |
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| 3 | #include <string.h> |
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| 4 | |
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| 5 | #include <GL/glew.h> |
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| 6 | #include <Cg/cgGL.h> |
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| 7 | |
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| 8 | #include "NvZincBlendeVolumeShader.h" |
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| 9 | |
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| 10 | NvZincBlendeVolumeShader::NvZincBlendeVolumeShader() |
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| 11 | { |
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| 12 | init(); |
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| 13 | } |
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| 14 | |
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| 15 | NvZincBlendeVolumeShader::~NvZincBlendeVolumeShader() |
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| 16 | { |
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| 17 | } |
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| 18 | |
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| 19 | void NvZincBlendeVolumeShader::init() |
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| 20 | { |
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| 21 | loadFragmentProgram("zincblende_volume.cg", "main"); |
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| 22 | _tfParam = cgGetNamedParameter(_cgFP, "tf"); |
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| 23 | _volumeAParam = cgGetNamedParameter(_cgFP, "volumeA"); |
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| 24 | _volumeBParam = cgGetNamedParameter(_cgFP, "volumeB"); |
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| 25 | _cellSizeParam = cgGetNamedParameter(_cgFP, "cellSize"); |
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| 26 | _mviParam = cgGetNamedParameter(_cgFP, "modelViewInv"); |
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| 27 | _renderParam = cgGetNamedParameter(_cgFP, "renderParameters"); |
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| 28 | _optionOneVolumeParam = cgGetNamedParameter(_cgFP, "options"); |
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| 29 | } |
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| 30 | |
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| 31 | void NvZincBlendeVolumeShader::bind(unsigned int tfID, Volume *volume, int sliceMode) |
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| 32 | { |
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| 33 | ZincBlendeVolume *vol = (ZincBlendeVolume *)volume; |
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| 34 | cgGLSetStateMatrixParameter(_mviParam, CG_GL_MODELVIEW_MATRIX, CG_GL_MATRIX_INVERSE); |
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| 35 | cgGLSetTextureParameter(_tfParam, tfID); |
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| 36 | cgGLSetParameter4f(_cellSizeParam, |
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| 37 | vol->cellSize.x, |
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| 38 | vol->cellSize.y, |
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| 39 | vol->cellSize.z, 0.); |
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| 40 | |
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| 41 | if (!sliceMode) { |
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| 42 | cgGLSetParameter4f(_renderParam, |
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| 43 | vol->numSlices(), |
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| 44 | vol->opacityScale(), |
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| 45 | vol->diffuse(), |
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| 46 | vol->specular()); |
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| 47 | } else { |
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| 48 | cgGLSetParameter4f(_renderParam, |
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| 49 | 0., |
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| 50 | vol->opacityScale(), |
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| 51 | vol->diffuse(), |
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| 52 | vol->specular()); |
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| 53 | } |
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| 54 | |
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| 55 | cgGLSetParameter4f(_optionOneVolumeParam, |
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| 56 | 0.0f, |
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| 57 | volume->isosurface(), |
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| 58 | 0.0f, |
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| 59 | 0.0f); |
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| 60 | |
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| 61 | cgGLSetTextureParameter(_volumeAParam, vol->zincblendeTex[0]->id()); |
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| 62 | cgGLSetTextureParameter(_volumeBParam, vol->zincblendeTex[1]->id()); |
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| 63 | cgGLEnableTextureParameter(_volumeAParam); |
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| 64 | cgGLEnableTextureParameter(_volumeBParam); |
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| 65 | |
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| 66 | cgGLBindProgram(_cgFP); |
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| 67 | cgGLEnableProfile(CG_PROFILE_FP40); |
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| 68 | } |
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| 69 | |
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| 70 | void NvZincBlendeVolumeShader::unbind() |
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| 71 | { |
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| 72 | cgGLDisableTextureParameter(_volumeAParam); |
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| 73 | cgGLDisableTextureParameter(_volumeBParam); |
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| 74 | cgGLDisableTextureParameter(_tfParam); |
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| 75 | |
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| 76 | cgGLDisableProfile(CG_PROFILE_FP40); |
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| 77 | } |
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