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