[2896] | 1 | #include "DeferredRenderer.h"
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[2859] | 2 | #include "FrameBufferObject.h"
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| 3 | #include "RenderState.h"
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| 4 | #include "SampleGenerator.h"
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[2860] | 5 | #include "Vector3.h"
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| 6 | #include "Camera.h"
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[2884] | 7 | #include "shaderenv.h"
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[2886] | 8 | #include "Halton.h"
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[2895] | 9 | #include "ShadowMapping.h"
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[2952] | 10 | #include "Light.h"
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[3057] | 11 | #include "ShaderManager.h"
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[3213] | 12 | #include "Texture.h"
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| 13 |
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[3198] | 14 | #include <math.h>
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[2858] | 15 |
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[3003] | 16 | #include <IL/il.h>
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| 17 | #include <assert.h>
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[2859] | 18 |
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[3003] | 19 |
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[3021] | 20 | #ifdef _CRT_SET
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| 21 | #define _CRTDBG_MAP_ALLOC
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| 22 | #include <stdlib.h>
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| 23 | #include <crtdbg.h>
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| 24 |
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| 25 | // redefine new operator
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| 26 | #define DEBUG_NEW new(_NORMAL_BLOCK, __FILE__, __LINE__)
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| 27 | #define new DEBUG_NEW
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| 28 | #endif
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| 29 |
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| 30 |
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[2858] | 31 | using namespace std;
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| 32 |
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| 33 |
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[3003] | 34 | static void startil()
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| 35 | {
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| 36 | ilInit();
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| 37 | assert(ilGetError() == IL_NO_ERROR);
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| 38 | }
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| 39 |
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| 40 |
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| 41 | static void stopil()
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| 42 | {
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| 43 | ilShutDown();
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| 44 | assert(ilGetError() == IL_NO_ERROR);
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| 45 | }
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| 46 |
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[3198] | 47 |
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[2858] | 48 | namespace CHCDemoEngine
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| 49 | {
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| 50 |
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[3026] | 51 | static ShaderProgram *sCgSsaoProgram = NULL;
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| 52 | static ShaderProgram *sCgGiProgram = NULL;
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[2873] | 53 |
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[3026] | 54 | static ShaderProgram *sCgDeferredProgram = NULL;
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| 55 | static ShaderProgram *sCgAntiAliasingProgram = NULL;
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| 56 | static ShaderProgram *sCgDeferredShadowProgram = NULL;
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[2859] | 57 |
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[3026] | 58 | static ShaderProgram *sCgCombineSsaoProgram = NULL;
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[3301] | 59 | static ShaderProgram *sCgFilterSsaoProgram = NULL;
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[3026] | 60 | static ShaderProgram *sCgCombineIllumProgram = NULL;
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| 61 | static ShaderProgram *sCgLogLumProgram = NULL;
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| 62 | static ShaderProgram *sCgToneProgram = NULL;
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| 63 | static ShaderProgram *sCgDownSampleProgram = NULL;
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[3137] | 64 | static ShaderProgram *sCgScaleDepthProgram = NULL;
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[3155] | 65 | static ShaderProgram *sCgPrepareSsaoProgram = NULL;
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[3213] | 66 | static ShaderProgram *sCgLenseFlareProgram = NULL;
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[2869] | 67 |
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[3232] | 68 | static ShaderProgram *sCgDOFProgram = NULL;
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[2992] | 69 |
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[3232] | 70 |
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[3129] | 71 | static GLuint noiseTex2D = 0;
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| 72 | static GLuint noiseTex1D = 0;
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[3324] | 73 | static GLuint sampleTex2D = 0;
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[2865] | 74 |
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[3128] | 75 |
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[3324] | 76 | static Sample2 samples2[NUM_PRECOMPUTED_SAMPLES];
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[2859] | 77 | // ssao random spherical samples
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[3324] | 78 | //static Sample2 samples2[NUM_SAMPLES];
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| 79 |
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[3232] | 80 | // pcf samples
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[3103] | 81 | static Sample2 pcfSamples[NUM_PCF_TABS];
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[3232] | 82 | // dof samples
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| 83 | static Sample2 dofSamples[NUM_DOF_TABS];
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[2966] | 84 |
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[3214] | 85 | static Texture *sHaloTex[5];
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[3103] | 86 |
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[3118] | 87 | int DeferredRenderer::colorBufferIdx = 0;
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[2859] | 88 |
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[2992] | 89 |
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[3212] | 90 |
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| 91 |
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[3085] | 92 | /** Helper method that computes the view vectors in the corners of the current view frustum.
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| 93 | */
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[3316] | 94 | static void ComputeViewVectors(PerspectiveCamera *cam,
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| 95 | Vector3 &bl,
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| 96 | Vector3 &br,
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| 97 | Vector3 &tl,
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| 98 | Vector3 &tr)
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[3085] | 99 | {
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| 100 | Vector3 ftl, ftr, fbl, fbr, ntl, ntr, nbl, nbr;
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| 101 | cam->ComputePoints(ftl, ftr, fbl, fbr, ntl, ntr, nbl, nbr);
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| 102 |
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| 103 | bl = Normalize(nbl - fbl);
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| 104 | br = Normalize(nbr - fbr);
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| 105 | tl = Normalize(ntl - ftl);
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| 106 | tr = Normalize(ntr - ftr);
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| 107 | }
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| 108 |
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| 109 |
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[3025] | 110 | static float GaussianDistribution(float x, float y, float rho)
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| 111 | {
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[3110] | 112 | float g = 1.0f / sqrtf(2.0f * M_PI * rho * rho);
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[3133] | 113 | g *= expf( -(x * x + y * y) / (2.0f * rho * rho));
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[3025] | 114 |
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| 115 | return g;
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| 116 | }
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| 117 |
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| 118 |
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[2859] | 119 | static void PrintGLerror(char *msg)
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| 120 | {
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| 121 | GLenum errCode;
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| 122 | const GLubyte *errStr;
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| 123 |
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| 124 | if ((errCode = glGetError()) != GL_NO_ERROR)
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| 125 | {
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| 126 | errStr = gluErrorString(errCode);
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| 127 | fprintf(stderr,"OpenGL ERROR: %s: %s\n", errStr, msg);
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| 128 | }
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| 129 | }
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| 130 |
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| 131 |
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[3206] | 132 | static Sample2 UnitTest(float x, float y, int wi, int he)
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[3198] | 133 | {
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| 134 | Sample2 s;
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| 135 |
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| 136 | s.x = float(floor(x * (float)wi - 0.5f) + 1.0f) / (float)wi;
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| 137 | s.y = float(floor(y * (float)he - 0.5f) + 1.0f) / (float)he;
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| 138 |
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| 139 | return s;
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| 140 | }
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| 141 |
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| 142 |
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[3134] | 143 | static void ComputeSampleOffsets(float *sampleOffsets,
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| 144 | int imageW, int imageH,
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| 145 | float width,
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| 146 | int samples)
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| 147 | {
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| 148 | const float xoffs = width / (float)imageW;
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| 149 | const float yoffs = width / (float)imageH;
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[3017] | 150 |
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[3134] | 151 | const int numSamples = (int)sqrt((float)samples);
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| 152 | const int startSamples = -numSamples / 2;
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| 153 | const int endSamples = numSamples + startSamples - 1;
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| 154 | //cout << startSamples << " " << endSamples << endl;
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[2976] | 155 |
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[3134] | 156 | int idx = 0;
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[3017] | 157 |
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[3134] | 158 | for (int x = startSamples; x <= endSamples; ++ x)
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[3017] | 159 | {
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[3134] | 160 | for (int y = startSamples; y <= endSamples; ++ y)
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[3017] | 161 | {
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[3134] | 162 | sampleOffsets[idx + 0] = (float)x * xoffs;
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| 163 | sampleOffsets[idx + 1] = (float)y * yoffs;
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[3017] | 164 | idx += 2;
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| 165 | }
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| 166 | }
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| 167 | }
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| 168 |
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[3026] | 169 |
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[3327] | 170 | static float *GrabTexture(GLuint tex, int w, int h)
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| 171 | {
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| 172 | glBindTexture(GL_TEXTURE_2D, tex);
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| 173 |
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| 174 | float *data = new float[w * h * 3];
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| 175 |
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| 176 | glGetTexImage(GL_TEXTURE_2D, 0, GL_RGB, GL_FLOAT, data);
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| 177 |
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| 178 | glBindTexture(GL_TEXTURE_2D, 0);
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| 179 | glDisable(GL_TEXTURE_2D);
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| 180 |
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| 181 | return data;
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| 182 | }
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| 183 |
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| 184 |
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[3132] | 185 | void DeferredRenderer::FlipFbos(FrameBufferObject *fbo)
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| 186 | {
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| 187 | fbo->Bind();
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| 188 | colorBufferIdx = 3 - colorBufferIdx;
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| 189 | glDrawBuffers(1, mrt + colorBufferIdx);
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| 190 | }
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| 191 |
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| 192 |
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[3026] | 193 | void DeferredRenderer::DrawQuad(ShaderProgram *p)
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| 194 | {
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[3132] | 195 | if (p) p->Bind();
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[3026] | 196 |
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[3089] | 197 | // interpolate the view vector
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[3085] | 198 | Vector3 bl = mCornersView[0];
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| 199 | Vector3 br = mCornersView[1];
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| 200 | Vector3 tl = mCornersView[2];
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| 201 | Vector3 tr = mCornersView[3];
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| 202 |
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[3026] | 203 | // note: slightly larger texture could hide ambient occlusion error on border but costs resolution
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| 204 | glBegin(GL_QUADS);
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| 205 |
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[3093] | 206 | glTexCoord2f(0, 0); glMultiTexCoord3fARB(GL_TEXTURE1_ARB, bl.x, bl.y, bl.z); glVertex2f( .0f, .0f);
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| 207 | glTexCoord2f(1, 0); glMultiTexCoord3fARB(GL_TEXTURE1_ARB, br.x, br.y, br.z); glVertex2f(1.0f, .0f);
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| 208 | glTexCoord2f(1, 1); glMultiTexCoord3fARB(GL_TEXTURE1_ARB, tr.x, tr.y, tr.z); glVertex2f(1.0f, 1.0f);
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| 209 | glTexCoord2f(0, 1); glMultiTexCoord3fARB(GL_TEXTURE1_ARB, tl.x, tl.y, tl.z); glVertex2f( .0f, 1.0f);
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[3026] | 210 |
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| 211 | glEnd();
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| 212 | }
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| 213 |
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[2859] | 214 | /** Generate poisson disc distributed sample points on the unit disc
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| 215 | */
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[2887] | 216 | static void GenerateSamples(int sampling)
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[2859] | 217 | {
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[2887] | 218 | switch (sampling)
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| 219 | {
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[2930] | 220 | case DeferredRenderer::SAMPLING_POISSON:
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[2887] | 221 | {
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[3338] | 222 | PoissonDiscSampleGenerator2D poisson(NUM_PRECOMPUTED_SAMPLES, 1.0f);
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[2900] | 223 | poisson.Generate((float *)samples2);
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[2887] | 224 | }
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| 225 | break;
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[2930] | 226 | case DeferredRenderer::SAMPLING_QUADRATIC:
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[2887] | 227 | {
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[3338] | 228 | //PoissonDiscSampleGenerator2D poisson(NUM_PRECOMPUTED_SAMPLES, 1.0f);
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| 229 | //poisson.Generate((float *)samples2);
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[3324] | 230 | QuadraticDiscSampleGenerator2D g(NUM_PRECOMPUTED_SAMPLES, 1.0f);
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[2930] | 231 | g.Generate((float *)samples2);
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[2887] | 232 | }
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| 233 | break;
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[2930] | 234 | default: // SAMPLING_DEFAULT
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[3026] | 235 | {
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[3338] | 236 | RandomSampleGenerator2D g(NUM_SAMPLES, 1.0f);
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[3026] | 237 | g.Generate((float *)samples2);
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| 238 | }
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[2903] | 239 | }
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[2859] | 240 | }
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| 241 |
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| 242 |
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[2879] | 243 | static void CreateNoiseTex2D(int w, int h)
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| 244 | {
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| 245 | //GLubyte *randomNormals = new GLubyte[mWidth * mHeight * 3];
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[3227] | 246 | Vector3 *randomNormals = new Vector3[w * h];
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[2879] | 247 |
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[3227] | 248 | for (int i = 0; i < w * h; ++ i)
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[2879] | 249 | {
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[2903] | 250 | // create random samples on a circle
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[3227] | 251 | const float r = RandomValue(0, 1);
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[2903] | 252 |
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[3227] | 253 | const float theta = 2.0f * acos(sqrt(1.0f - r));
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| 254 | //randomNormals[i] = Vector3(cos(theta), sin(theta), 0);
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| 255 | randomNormals[i] = Vector3(RandomValue(-M_PI, M_PI), 0, 0);
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| 256 | //Normalize(randomNormals[i]);
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[2879] | 257 | }
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| 258 |
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[3227] | 259 |
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[2879] | 260 | glEnable(GL_TEXTURE_2D);
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[3129] | 261 | glGenTextures(1, &noiseTex2D);
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| 262 | glBindTexture(GL_TEXTURE_2D, noiseTex2D);
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[2879] | 263 |
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[3227] | 264 | //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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| 265 | //glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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| 266 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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| 267 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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[2879] | 268 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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| 269 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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| 270 |
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[3227] | 271 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, w, h, 0, GL_RGB, GL_FLOAT, (float *)randomNormals);
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[2879] | 272 |
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| 273 | glBindTexture(GL_TEXTURE_2D, 0);
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| 274 | glDisable(GL_TEXTURE_2D);
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| 275 |
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| 276 | delete [] randomNormals;
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| 277 |
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| 278 | cout << "created noise texture" << endl;
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| 279 |
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| 280 | PrintGLerror("noisetexture");
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| 281 | }
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| 282 |
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| 283 |
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[3326] | 284 | static void UpdateSampleTex(Sample2 *samples, int numSamples)
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| 285 | {
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[3332] | 286 | PrintGLerror("here4");
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[3326] | 287 | glEnable(GL_TEXTURE_2D);
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| 288 | glBindTexture(GL_TEXTURE_2D, sampleTex2D);
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| 289 |
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| 290 | const int w = numSamples; const int h = 1;
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| 291 |
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| 292 | float *tempBuffer = new float[numSamples * 3];
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| 293 |
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| 294 | for (int i = 0; i < numSamples; ++ i)
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| 295 | {
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| 296 | tempBuffer[i * 3 + 0] = samples[i].x;
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| 297 | tempBuffer[i * 3 + 1] = samples[i].y;
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| 298 | tempBuffer[i * 3 + 2] = 0;
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| 299 | }
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| 300 |
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| 301 | glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, w, h, GL_RGB, GL_FLOAT, (float *)tempBuffer);
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| 302 |
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[3333] | 303 | glBindTexture(GL_TEXTURE_2D, 0);
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[3326] | 304 | glDisable(GL_TEXTURE_2D);
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| 305 |
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| 306 | cout << "updated sample texture" << endl;
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| 307 |
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| 308 | delete [] tempBuffer;
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| 309 |
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[3332] | 310 | PrintGLerror("update sample tex");
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[3326] | 311 | }
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| 312 |
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| 313 |
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[3324] | 314 | static void CreateSampleTex(Sample2 *samples, int numSamples)
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| 315 | {
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| 316 | glEnable(GL_TEXTURE_2D);
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| 317 | glGenTextures(1, &sampleTex2D);
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| 318 | glBindTexture(GL_TEXTURE_2D, sampleTex2D);
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| 319 |
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| 320 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
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| 321 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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| 322 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
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| 323 | glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
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| 324 |
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[3326] | 325 | const int w = numSamples; const int h = 1;
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[3324] | 326 |
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| 327 | float *tempBuffer = new float[numSamples * 3];
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| 328 |
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| 329 | for (int i = 0; i < numSamples; ++ i)
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| 330 | {
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| 331 | tempBuffer[i * 3 + 0] = samples[i].x;
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| 332 | tempBuffer[i * 3 + 1] = samples[i].y;
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| 333 | tempBuffer[i * 3 + 2] = 0;
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| 334 | }
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| 335 |
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| 336 | glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F_ARB, w, h, 0, GL_RGB, GL_FLOAT, (float *)tempBuffer);
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| 337 |
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| 338 | glBindTexture(GL_TEXTURE_2D, 0);
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| 339 | glDisable(GL_TEXTURE_2D);
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| 340 |
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| 341 | cout << "created sample texture" << endl;
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| 342 |
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| 343 | delete [] tempBuffer;
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| 344 |
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[3332] | 345 | PrintGLerror("create sample tex");
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[3324] | 346 | }
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| 347 |
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| 348 |
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[3213] | 349 | static void PrepareLenseFlare()
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| 350 | {
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[3214] | 351 | string textures[] = {"flare4.tga", "lens2.jpg", "lens3.jpg", "lens4.jpg", "lens1.jpg"};
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[3213] | 352 |
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[3270] | 353 | // todo: delete halo textures
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[3214] | 354 | for (int i = 0; i < 5; ++ i)
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[3213] | 355 | {
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| 356 | sHaloTex[i] = new Texture(model_path + textures[i]);
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| 357 |
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[3214] | 358 | sHaloTex[i]->SetBoundaryModeS(Texture::BORDER);
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| 359 | sHaloTex[i]->SetBoundaryModeT(Texture::BORDER);
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[3213] | 360 |
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| 361 | sHaloTex[i]->Create();
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| 362 | }
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| 363 |
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| 364 | cout << "prepared lense flare textures" << endl;
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| 365 |
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| 366 | PrintGLerror("prepare lense flare");
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| 367 | }
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| 368 |
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| 369 |
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[3216] | 370 | DeferredRenderer::DeferredRenderer(int w, int h,
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| 371 | PerspectiveCamera *cam,
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| 372 | bool ssaoUseFullResolution):
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[2860] | 373 | mWidth(w), mHeight(h),
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| 374 | mCamera(cam),
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[2875] | 375 | mUseTemporalCoherence(true),
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[2895] | 376 | mRegenerateSamples(true),
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[2930] | 377 | mSamplingMethod(SAMPLING_POISSON),
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[2895] | 378 | mShadingMethod(DEFAULT),
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[3189] | 379 | mIllumFboIndex(0),
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[3212] | 380 | mSortSamples(true),
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| 381 | mKernelRadius(1e-8f),
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[3215] | 382 | mSampleIntensity(0.2f),
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[3219] | 383 | mSunVisiblePixels(0),
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[3220] | 384 | mSavedFrameNumber(-1),
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[3235] | 385 | mSavedFrameSuffix(""),
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[3242] | 386 | mMaxDistance(1e6f),
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| 387 | mTempCohFactor(.0f),
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| 388 | mUseToneMapping(false),
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| 389 | mUseAntiAliasing(false),
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[3305] | 390 | mUseDepthOfField(false),
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[3316] | 391 | mSsaoUseFullResolution(ssaoUseFullResolution),
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[3319] | 392 | mMaxConvergence(2000.0f),
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| 393 | mSpatialWeight(.0f)
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[2861] | 394 | {
|
---|
| 395 | ///////////
|
---|
| 396 | //-- the flip-flop fbos
|
---|
[2859] | 397 |
|
---|
[3216] | 398 | int downSampledWidth, downSampledHeight;
|
---|
| 399 |
|
---|
[3305] | 400 | if (mSsaoUseFullResolution)
|
---|
[3216] | 401 | {
|
---|
| 402 | downSampledWidth = w; downSampledHeight = h;
|
---|
| 403 | cout << "using full resolution ssao" << endl;
|
---|
| 404 | }
|
---|
| 405 | else
|
---|
| 406 | {
|
---|
| 407 | downSampledWidth = w / 2; downSampledHeight = h / 2;
|
---|
| 408 | cout << "using half resolution ssao" << endl;
|
---|
| 409 | }
|
---|
| 410 |
|
---|
[3305] | 411 |
|
---|
| 412 | /////////
|
---|
[3301] | 413 | //-- the illumination fbo is either half size or full size
|
---|
| 414 |
|
---|
[3216] | 415 | mIllumFbo = new FrameBufferObject(downSampledWidth, downSampledHeight, FrameBufferObject::DEPTH_NONE);
|
---|
[3019] | 416 | mFBOs.push_back(mIllumFbo);
|
---|
[2891] | 417 |
|
---|
[3019] | 418 | for (int i = 0; i < 4; ++ i)
|
---|
| 419 | {
|
---|
[3332] | 420 | mIllumFbo->AddColorBuffer(ColorBufferObject::R_FLOAT_32, ColorBufferObject::WRAP_CLAMP_TO_EDGE, ColorBufferObject::FILTER_LINEAR);
|
---|
[3117] | 421 | FrameBufferObject::InitBuffer(mIllumFbo, i);
|
---|
[3019] | 422 | }
|
---|
[3002] | 423 |
|
---|
[3117] | 424 |
|
---|
| 425 | ///////////////
|
---|
[3212] | 426 | //-- the downsampled ssao + color bleeding textures:
|
---|
[3305] | 427 | //-- as GI is mostly low frequency, we can use lower resolution to improve performance
|
---|
[3117] | 428 |
|
---|
[3222] | 429 | mDownSampleFbo = new FrameBufferObject(downSampledWidth, downSampledHeight, FrameBufferObject::DEPTH_NONE);
|
---|
[3204] | 430 | // the downsampled color + depth buffer
|
---|
[3002] | 431 | mDownSampleFbo->AddColorBuffer(ColorBufferObject::RGBA_FLOAT_32, ColorBufferObject::WRAP_CLAMP_TO_EDGE, ColorBufferObject::FILTER_LINEAR);
|
---|
[3204] | 432 | // downsample buffer for the normal texture
|
---|
[3212] | 433 | mDownSampleFbo->AddColorBuffer(ColorBufferObject::RGB_FLOAT_16, ColorBufferObject::WRAP_CLAMP_TO_EDGE, ColorBufferObject::FILTER_LINEAR);
|
---|
[3019] | 434 |
|
---|
[3199] | 435 | for (int i = 0; i < 2; ++ i)
|
---|
| 436 | {
|
---|
| 437 | FrameBufferObject::InitBuffer(mDownSampleFbo, i);
|
---|
| 438 | }
|
---|
[3117] | 439 |
|
---|
[3019] | 440 | mFBOs.push_back(mDownSampleFbo);
|
---|
[3038] | 441 |
|
---|
[3305] | 442 |
|
---|
| 443 | /////////
|
---|
| 444 | //-- temporal buffer
|
---|
| 445 |
|
---|
| 446 | mTempFbo = new FrameBufferObject(mWidth, mHeight, FrameBufferObject::DEPTH_NONE);
|
---|
| 447 | mFBOs.push_back(mTempFbo);
|
---|
| 448 |
|
---|
| 449 | mTempFbo->AddColorBuffer(ColorBufferObject::RGBA_FLOAT_32, ColorBufferObject::WRAP_CLAMP_TO_EDGE, ColorBufferObject::FILTER_LINEAR);
|
---|
| 450 | FrameBufferObject::InitBuffer(mTempFbo, 0);
|
---|
| 451 |
|
---|
| 452 |
|
---|
[3084] | 453 | // create noise texture for ssao
|
---|
[3150] | 454 | // for performance reasons we use a smaller texture and repeat it over the screen
|
---|
| 455 | CreateNoiseTex2D(mIllumFbo->GetWidth() / 4, mIllumFbo->GetWidth() / 4);
|
---|
[3301] | 456 |
|
---|
[3085] | 457 | mProjViewMatrix = IdentityMatrix();
|
---|
| 458 | mOldProjViewMatrix = IdentityMatrix();
|
---|
| 459 |
|
---|
| 460 | for (int i = 0; i < 4; ++ i)
|
---|
| 461 | {
|
---|
| 462 | mCornersView[i] = mOldCornersView[i] = Vector3::UNIT_X();
|
---|
| 463 | }
|
---|
| 464 |
|
---|
| 465 | mEyePos = mOldEyePos = Vector3::ZERO();
|
---|
| 466 |
|
---|
[3213] | 467 | PrepareLenseFlare();
|
---|
| 468 |
|
---|
[3038] | 469 | InitCg();
|
---|
[2861] | 470 | }
|
---|
| 471 |
|
---|
| 472 |
|
---|
[2896] | 473 | DeferredRenderer::~DeferredRenderer()
|
---|
[2861] | 474 | {
|
---|
[3019] | 475 | CLEAR_CONTAINER(mFBOs);
|
---|
[3206] | 476 |
|
---|
[3129] | 477 | glDeleteTextures(1, &noiseTex2D);
|
---|
| 478 | glDeleteTextures(1, &noiseTex1D);
|
---|
[2861] | 479 | }
|
---|
| 480 |
|
---|
| 481 |
|
---|
[3038] | 482 | void DeferredRenderer::InitCg()
|
---|
[3026] | 483 | {
|
---|
[3057] | 484 | ShaderManager *sm = ShaderManager::GetSingleton();
|
---|
[2873] | 485 |
|
---|
[3216] | 486 | sCgDeferredProgram = sm->CreateFragmentProgram("deferred", "main", "DeferredFrag");
|
---|
| 487 | sCgDeferredShadowProgram = sm->CreateFragmentProgram("deferred", "main_shadow", "DeferredFragShadow");
|
---|
| 488 | sCgSsaoProgram = sm->CreateFragmentProgram("ssao", "main", "SsaoFrag");
|
---|
| 489 | sCgGiProgram = sm->CreateFragmentProgram("globillum", "main", "GiFrag");
|
---|
| 490 | sCgCombineIllumProgram = sm->CreateFragmentProgram("globillum", "combine", "CombineGi");
|
---|
[3305] | 491 |
|
---|
| 492 | if (mSsaoUseFullResolution)
|
---|
| 493 | {
|
---|
| 494 | sCgFilterSsaoProgram = sm->CreateFragmentProgram("combineSsaoSep", "FilterSsaoFullRes", "FilterSsao");
|
---|
| 495 | }
|
---|
| 496 | else
|
---|
| 497 | {
|
---|
| 498 | sCgFilterSsaoProgram = sm->CreateFragmentProgram("combineSsaoSep", "FilterSsaoHalfRes", "FilterSsao");
|
---|
| 499 | }
|
---|
| 500 |
|
---|
| 501 | sCgCombineSsaoProgram = sm->CreateFragmentProgram("combineSsaoSep", "CombineSsao", "CombineSsao");
|
---|
[3216] | 502 | sCgAntiAliasingProgram = sm->CreateFragmentProgram("antialiasing", "main", "AntiAliasing");
|
---|
| 503 | sCgToneProgram = sm->CreateFragmentProgram("tonemap", "ToneMap", "ToneMap");
|
---|
[3137] | 504 | sCgDownSampleProgram = sm->CreateFragmentProgram("deferred", "Output", "Output");
|
---|
| 505 | sCgScaleDepthProgram = sm->CreateFragmentProgram("deferred", "ScaleDepth", "ScaleDepth");
|
---|
[3216] | 506 | sCgLogLumProgram = sm->CreateFragmentProgram("tonemap", "CalcAvgLogLum", "AvgLogLum");
|
---|
[3155] | 507 | sCgPrepareSsaoProgram = sm->CreateFragmentProgram("deferred", "PrepareSsao", "PrepareSsao");
|
---|
[3213] | 508 | sCgLenseFlareProgram = sm->CreateFragmentProgram("lenseFlare", "LenseFlare", "LenseFlare");
|
---|
[3232] | 509 | sCgDOFProgram = sm->CreateFragmentProgram("depthOfField", "DepthOfField", "DepthOfField");
|
---|
[3038] | 510 |
|
---|
[3034] | 511 |
|
---|
[3104] | 512 | ///////////////////
|
---|
| 513 | //-- initialize program parameters
|
---|
[3034] | 514 |
|
---|
[3104] | 515 | string ssaoParams[] =
|
---|
[3313] | 516 | {"colors", "normals", "oldTex", "noiseTex", "temporalCoherence",
|
---|
[3111] | 517 | "samples", "bl", "br", "tl", "tr",
|
---|
| 518 | "modelViewProj", "oldModelViewProj", "oldEyePos", "oldbl", "oldbr",
|
---|
[3212] | 519 | "oldtl", "oldtr", "attribsTex", "kernelRadius", "sampleIntensity"};
|
---|
[3324] | 520 |
|
---|
[3212] | 521 | sCgSsaoProgram->AddParameters(ssaoParams, 0, 20);
|
---|
[3085] | 522 |
|
---|
[3104] | 523 | string giParams[] =
|
---|
| 524 | {"colors", "normals", "noiseTex", "oldSsaoTex", "oldIllumTex",
|
---|
[3111] | 525 | "temporalCoherence", "samples", "bl", "br", "tl",
|
---|
| 526 | "tr", "oldModelViewProj", "modelViewProj"};
|
---|
[3232] | 527 |
|
---|
[3104] | 528 | sCgGiProgram->AddParameters(giParams, 0, 13);
|
---|
[3034] | 529 |
|
---|
[3104] | 530 | string toneParams[] = {"colors", "imageKey", "whiteLum", "middleGrey"};
|
---|
| 531 | sCgToneProgram->AddParameters(toneParams, 0, 4);
|
---|
[3034] | 532 |
|
---|
| 533 |
|
---|
[3104] | 534 | ////////////////
|
---|
| 535 |
|
---|
| 536 | string deferredShadowParams[] =
|
---|
| 537 | {"colors", "normals", "shadowMap", "noiseTex", "shadowMatrix",
|
---|
| 538 | "sampleWidth", "lightDir", "eyePos", "samples", "weights"};
|
---|
[3035] | 539 |
|
---|
[3104] | 540 | sCgDeferredShadowProgram->AddParameters(deferredShadowParams, 0, 10);
|
---|
| 541 |
|
---|
| 542 | ////////////////
|
---|
[3034] | 543 |
|
---|
[3104] | 544 | string combineIllumParams[] = {"colorsTex", "ssaoTex", "illumTex"};
|
---|
| 545 | sCgCombineIllumProgram->AddParameters(combineIllumParams, 0, 3);
|
---|
[3035] | 546 |
|
---|
[3104] | 547 | ////////////////
|
---|
[3035] | 548 |
|
---|
[3299] | 549 | string combineSsaoParams[] =
|
---|
[3319] | 550 | {"colorsTex", "ssaoTex", "bl", "br", "tl", "tr", "res", "maxConvergence", "spatialWeight"};
|
---|
[3232] | 551 |
|
---|
[3319] | 552 | sCgCombineSsaoProgram->AddParameters(combineSsaoParams, 0, 9);
|
---|
[3035] | 553 |
|
---|
[3301] | 554 |
|
---|
| 555 | ////////////////
|
---|
[3299] | 556 |
|
---|
[3301] | 557 | string filterSsaoParams[] =
|
---|
[3319] | 558 | {"colorsTex", "ssaoTex", "bl", "br", "tl", "tr", "res", "maxConvergence", "spatialWeight"};
|
---|
| 559 | sCgFilterSsaoProgram->AddParameters(filterSsaoParams, 0, 9);
|
---|
[3301] | 560 |
|
---|
| 561 |
|
---|
[3104] | 562 | //////////////
|
---|
[3036] | 563 |
|
---|
[3104] | 564 | string deferredParams[] = {"colors", "normals", "lightDir"};
|
---|
| 565 | sCgDeferredProgram->AddParameters(deferredParams, 0, 3);
|
---|
| 566 |
|
---|
| 567 | ///////////////////
|
---|
| 568 |
|
---|
[3136] | 569 | string aaParams[] = {"colors", "normals", "offsets"};
|
---|
| 570 | sCgAntiAliasingProgram->AddParameters(aaParams, 0, 3);
|
---|
[3104] | 571 |
|
---|
| 572 | /////////////////////
|
---|
| 573 |
|
---|
[3137] | 574 | string downSampleParams[] = {"colors"};
|
---|
| 575 | sCgDownSampleProgram->AddParameters(downSampleParams, 0, 1);
|
---|
[3104] | 576 |
|
---|
[3137] | 577 | /////////////////////
|
---|
| 578 |
|
---|
| 579 | string scaleDepthParams[] = {"colors"};
|
---|
| 580 | sCgScaleDepthProgram->AddParameters(scaleDepthParams, 0, 1);
|
---|
| 581 |
|
---|
[3104] | 582 | ////////////
|
---|
| 583 |
|
---|
| 584 | sCgLogLumProgram->AddParameter("colors", 0);
|
---|
[3128] | 585 |
|
---|
| 586 | ////////////////
|
---|
| 587 |
|
---|
[3155] | 588 |
|
---|
| 589 | string prepareSsaoParams[] =
|
---|
[3326] | 590 | {"colorsTex", "normalsTex", "diffVals", "oldTex",
|
---|
[3167] | 591 | "oldEyePos", "modelViewProj", "oldModelViewProj",
|
---|
[3326] | 592 | "oldbl", "oldbr", "oldtl", "oldtr", "myTex"};
|
---|
[3325] | 593 | sCgPrepareSsaoProgram->AddParameters(prepareSsaoParams, 0, 12);
|
---|
[3155] | 594 |
|
---|
| 595 |
|
---|
| 596 | ////////////////
|
---|
[3213] | 597 |
|
---|
| 598 | string lenseFlareParams[] =
|
---|
| 599 | {"colorsTex", "flareTex1", "flareTex2", "flareTex3", "flareTex4",
|
---|
[3215] | 600 | "flareTex5", "vectorToLight", "distanceToLight", "sunVisiblePixels"};
|
---|
[3213] | 601 |
|
---|
[3215] | 602 | sCgLenseFlareProgram->AddParameters(lenseFlareParams, 0, 9);
|
---|
[3213] | 603 |
|
---|
[3232] | 604 |
|
---|
| 605 | ////////////////
|
---|
| 606 |
|
---|
[3235] | 607 | string dofParams[] = {"colorsTex", "filterOffs", "sceneRange", "zFocus"};
|
---|
[3213] | 608 |
|
---|
[3235] | 609 | sCgDOFProgram->AddParameters(dofParams, 0, 4);
|
---|
[3232] | 610 |
|
---|
| 611 |
|
---|
[3144] | 612 | /////////
|
---|
[3133] | 613 | //-- pcf tabs for shadowing
|
---|
| 614 |
|
---|
[3026] | 615 | float filterWeights[NUM_PCF_TABS];
|
---|
[3227] | 616 | PoissonDiscSampleGenerator2D poisson2(NUM_PCF_TABS, 1.0f);
|
---|
[3103] | 617 | poisson2.Generate((float *)pcfSamples);
|
---|
[2990] | 618 |
|
---|
[3026] | 619 | for (int i = 0; i < NUM_PCF_TABS; ++ i)
|
---|
[2880] | 620 | {
|
---|
[3026] | 621 | filterWeights[i] = GaussianDistribution(pcfSamples[i].x, pcfSamples[i].y, 1.0f);
|
---|
[2880] | 622 | }
|
---|
| 623 |
|
---|
[3035] | 624 | sCgDeferredShadowProgram->SetArray2f(8, (float *)pcfSamples, NUM_PCF_TABS);
|
---|
| 625 | sCgDeferredShadowProgram->SetArray1f(9, (float *)filterWeights, NUM_PCF_TABS);
|
---|
[2880] | 626 |
|
---|
[3232] | 627 |
|
---|
| 628 | /////////
|
---|
| 629 | //-- pcf tabs for depth of field
|
---|
| 630 |
|
---|
| 631 | // todo matt: it is stupid to put num samples and width of kernel into constructor => change this!!!
|
---|
| 632 | PoissonDiscSampleGenerator2D poisson3(NUM_DOF_TABS, 1.0f);
|
---|
[3235] | 633 | poisson3.Generate((float *)dofSamples);
|
---|
[3232] | 634 |
|
---|
[3235] | 635 | for (int i = 0; i < NUM_DOF_TABS; ++ i)
|
---|
| 636 | {
|
---|
| 637 | dofSamples[i].x *= 1.0f / mWidth;
|
---|
| 638 | dofSamples[i].y *= 1.0f / mHeight;
|
---|
| 639 | }
|
---|
| 640 |
|
---|
[3232] | 641 | //float dofWeights[NUM_PCF_TABS];
|
---|
| 642 | //sCgDOFProgram->SetArray1f(2, (float *)dofWeights, NUM_DOF_TABS);
|
---|
| 643 |
|
---|
[2859] | 644 | PrintGLerror("init");
|
---|
| 645 | }
|
---|
| 646 |
|
---|
| 647 |
|
---|
[2896] | 648 | void DeferredRenderer::Render(FrameBufferObject *fbo,
|
---|
[2952] | 649 | DirectionalLight *light,
|
---|
[2991] | 650 | ShadowMap *shadowMap
|
---|
| 651 | )
|
---|
[2859] | 652 | {
|
---|
[3085] | 653 | InitFrame();
|
---|
| 654 |
|
---|
[2944] | 655 | if (shadowMap)
|
---|
[2952] | 656 | FirstPassShadow(fbo, light, shadowMap);
|
---|
[2895] | 657 | else
|
---|
[2952] | 658 | FirstPass(fbo, light);
|
---|
[2944] | 659 |
|
---|
[3103] | 660 | if (mShadingMethod != 0)
|
---|
[2880] | 661 | {
|
---|
[3332] | 662 | PrepareSsao(fbo); // downsample fbo buffers
|
---|
[3103] | 663 | }
|
---|
[3006] | 664 |
|
---|
[3213] | 665 | // q: use antialiasing before or after ssao?
|
---|
[3193] | 666 | //if (useAntiAliasing) AntiAliasing(fbo, light);
|
---|
[3132] | 667 |
|
---|
[3103] | 668 | switch (mShadingMethod)
|
---|
| 669 | {
|
---|
| 670 | case SSAO:
|
---|
[3242] | 671 | ComputeSsao(fbo, mTempCohFactor);
|
---|
[3301] | 672 | FilterSsao(fbo);
|
---|
[2944] | 673 | CombineSsao(fbo);
|
---|
| 674 | break;
|
---|
| 675 | case GI:
|
---|
[3242] | 676 | ComputeGlobIllum(fbo, mTempCohFactor);
|
---|
[2944] | 677 | CombineIllum(fbo);
|
---|
| 678 | break;
|
---|
[3214] | 679 | default:
|
---|
[2944] | 680 | // do nothing: standard deferred shading
|
---|
| 681 | break;
|
---|
| 682 | }
|
---|
[2884] | 683 |
|
---|
[3242] | 684 | /// depth of field
|
---|
| 685 | if (mUseDepthOfField)
|
---|
| 686 | {
|
---|
| 687 | DepthOfField(fbo);
|
---|
| 688 | }
|
---|
[3235] | 689 |
|
---|
[3242] | 690 | if (mUseToneMapping)
|
---|
[2991] | 691 | {
|
---|
| 692 | float imageKey, whiteLum, middleGrey;
|
---|
| 693 |
|
---|
| 694 | ComputeToneParameters(fbo, light, imageKey, whiteLum, middleGrey);
|
---|
[3007] | 695 | ToneMap(fbo, imageKey, whiteLum, middleGrey);
|
---|
[2991] | 696 | }
|
---|
| 697 |
|
---|
[3215] | 698 | /// compute lense flare
|
---|
| 699 | LenseFlare(fbo, light);
|
---|
[3213] | 700 |
|
---|
[3219] | 701 | const bool saveFrame = (mSavedFrameNumber != -1);
|
---|
| 702 | const bool displayAfterAA = !saveFrame;
|
---|
| 703 |
|
---|
[3175] | 704 | // multisampling is difficult / costly with deferred shading
|
---|
| 705 | // at least do some edge blurring
|
---|
[3242] | 706 | if (mUseAntiAliasing) AntiAliasing(fbo, light, displayAfterAA);
|
---|
[3219] | 707 |
|
---|
| 708 | /// store the current frame
|
---|
| 709 | if (saveFrame) SaveFrame(fbo);
|
---|
[3135] | 710 |
|
---|
[3219] | 711 | // if it hasn't been done yet => just output the latest buffer
|
---|
[3242] | 712 | if (!mUseAntiAliasing || !displayAfterAA)
|
---|
[3326] | 713 | {
|
---|
[3219] | 714 | Output(fbo);
|
---|
[3326] | 715 | }
|
---|
[3219] | 716 |
|
---|
[2867] | 717 | glEnable(GL_LIGHTING);
|
---|
| 718 | glDisable(GL_TEXTURE_2D);
|
---|
| 719 |
|
---|
| 720 | glMatrixMode(GL_PROJECTION);
|
---|
| 721 | glPopMatrix();
|
---|
| 722 |
|
---|
| 723 | glMatrixMode(GL_MODELVIEW);
|
---|
| 724 | glPopMatrix();
|
---|
| 725 |
|
---|
[3089] | 726 | // viewport
|
---|
[2867] | 727 | glPopAttrib();
|
---|
| 728 |
|
---|
[3007] | 729 | FrameBufferObject::Release();
|
---|
[3057] | 730 | ShaderManager::GetSingleton()->DisableFragmentProfile();
|
---|
[2859] | 731 | }
|
---|
| 732 |
|
---|
| 733 |
|
---|
[3167] | 734 | static inline float SqrMag(const Sample2 &s)
|
---|
| 735 | {
|
---|
| 736 | return (s.x * s.x + s.y * s.y);
|
---|
| 737 | }
|
---|
| 738 |
|
---|
| 739 |
|
---|
| 740 | static inline float SqrDist(const Sample2 &a, const Sample2 &b)
|
---|
| 741 | {
|
---|
| 742 | float x = a.x - b.x;
|
---|
| 743 | float y = a.y - b.y;
|
---|
| 744 |
|
---|
| 745 | return x * x + y * y;
|
---|
| 746 | }
|
---|
| 747 |
|
---|
| 748 |
|
---|
| 749 | static inline bool lt(const Sample2 &a, const Sample2 &b)
|
---|
| 750 | {
|
---|
| 751 | return SqrMag(a) < SqrMag(b);
|
---|
| 752 | }
|
---|
| 753 |
|
---|
| 754 |
|
---|
| 755 | void DeferredRenderer::SortSamples()
|
---|
| 756 | {
|
---|
| 757 | static Sample2 tempSamples[NUM_SAMPLES];
|
---|
| 758 | static bool checked[NUM_SAMPLES];
|
---|
| 759 |
|
---|
| 760 | for (int i = 0; i < NUM_SAMPLES; ++ i)
|
---|
| 761 | checked[i] = false;
|
---|
| 762 |
|
---|
| 763 | Sample2 currentSample;
|
---|
| 764 | currentSample.x = 0; currentSample.y = 0;
|
---|
| 765 | int ns = 0; // the next sample index
|
---|
| 766 |
|
---|
| 767 | for (int i = 0; i < NUM_SAMPLES; ++ i)
|
---|
| 768 | {
|
---|
| 769 | float minLen = 1e20f;
|
---|
| 770 |
|
---|
| 771 | for (int j = 0; j < NUM_SAMPLES; ++ j)
|
---|
| 772 | {
|
---|
| 773 | if (checked[j]) continue;
|
---|
| 774 |
|
---|
| 775 | Sample2 s = samples2[j];
|
---|
| 776 | const float len = SqrDist(s, currentSample);
|
---|
| 777 |
|
---|
| 778 | if (len < minLen)
|
---|
| 779 | {
|
---|
| 780 | minLen = len;
|
---|
| 781 | ns = j;
|
---|
| 782 | }
|
---|
| 783 | }
|
---|
| 784 |
|
---|
| 785 | tempSamples[i] = samples2[ns];
|
---|
| 786 | currentSample = samples2[ns];
|
---|
[3327] | 787 |
|
---|
[3167] | 788 | checked[ns] = true;
|
---|
| 789 | }
|
---|
| 790 |
|
---|
| 791 | for (int i = 0; i < NUM_SAMPLES; ++ i)
|
---|
| 792 | samples2[i] = tempSamples[i];
|
---|
| 793 | }
|
---|
| 794 |
|
---|
| 795 |
|
---|
[3199] | 796 | void DeferredRenderer::ComputeSsao(FrameBufferObject *fbo, float tempCohFactor)
|
---|
[2859] | 797 | {
|
---|
[3117] | 798 | GLuint colorsTex, normalsTex, attribsTex;
|
---|
[3015] | 799 |
|
---|
[3133] | 800 | if (0)
|
---|
[3199] | 801 | {
|
---|
[3117] | 802 | colorsTex = fbo->GetColorBuffer(colorBufferIdx)->GetTexture();
|
---|
[3199] | 803 | normalsTex = fbo->GetColorBuffer(1)->GetTexture();
|
---|
| 804 | }
|
---|
[3117] | 805 | else
|
---|
[3199] | 806 | {
|
---|
| 807 | normalsTex = mDownSampleFbo->GetColorBuffer(1)->GetTexture();
|
---|
[3117] | 808 | colorsTex = mDownSampleFbo->GetColorBuffer(0)->GetTexture();
|
---|
[3199] | 809 | }
|
---|
| 810 |
|
---|
[3198] | 811 | attribsTex = fbo->GetColorBuffer(2)->GetTexture();
|
---|
[3117] | 812 |
|
---|
[3341] | 813 |
|
---|
[3325] | 814 | /////////
|
---|
| 815 | //-- flip flop between illumination buffers
|
---|
| 816 |
|
---|
| 817 | GLuint oldSsaoTex = mIllumFbo->GetColorBuffer(2 - mIllumFboIndex)->GetTexture();
|
---|
| 818 |
|
---|
[3006] | 819 | glPushAttrib(GL_VIEWPORT_BIT);
|
---|
[3019] | 820 | glViewport(0, 0, mIllumFbo->GetWidth(), mIllumFbo->GetHeight());
|
---|
[3006] | 821 |
|
---|
[2861] | 822 | // read the second buffer, write to the first buffer
|
---|
[3019] | 823 | mIllumFbo->Bind();
|
---|
[3325] | 824 | glDrawBuffers(2, mrt + mIllumFboIndex);
|
---|
[2868] | 825 |
|
---|
[3095] | 826 | int i = 0;
|
---|
[3034] | 827 |
|
---|
[3095] | 828 | sCgSsaoProgram->SetTexture(i ++, colorsTex);
|
---|
| 829 | sCgSsaoProgram->SetTexture(i ++, normalsTex);
|
---|
[3325] | 830 | sCgSsaoProgram->SetTexture(i ++, oldSsaoTex);
|
---|
[3129] | 831 | sCgSsaoProgram->SetTexture(i ++, noiseTex2D);
|
---|
[3095] | 832 |
|
---|
[3313] | 833 | sCgSsaoProgram->SetValue1f(i ++, (mUseTemporalCoherence && !mRegenerateSamples) ? tempCohFactor : 0);
|
---|
[3035] | 834 |
|
---|
[3325] | 835 |
|
---|
[3324] | 836 | if (/*mUseTemporalCoherence || */mRegenerateSamples)
|
---|
[2875] | 837 | {
|
---|
[2895] | 838 | mRegenerateSamples = false;
|
---|
[2859] | 839 |
|
---|
[2875] | 840 | // q: should we generate new samples or only rotate the old ones?
|
---|
| 841 | // in the first case, the sample patterns look nicer, but the kernel
|
---|
| 842 | // needs longer to converge
|
---|
[3324] | 843 | GenerateSamples(mSamplingMethod);
|
---|
[3326] | 844 |
|
---|
| 845 | if (!sampleTex2D)
|
---|
| 846 | {
|
---|
| 847 | CreateSampleTex(samples2, NUM_PRECOMPUTED_SAMPLES);
|
---|
[3341] | 848 | cout<<"here34"<<endl;
|
---|
[3326] | 849 | }
|
---|
| 850 | else
|
---|
| 851 | {
|
---|
| 852 | UpdateSampleTex(samples2, NUM_PRECOMPUTED_SAMPLES);
|
---|
| 853 | }
|
---|
| 854 |
|
---|
[3327] | 855 |
|
---|
[3192] | 856 | //if (mSortSamples) { SortSamples(); }
|
---|
[3324] | 857 | //sCgSsaoProgram->SetArray2f(i, (float *)samples2, NUM_SAMPLES);
|
---|
| 858 | //sCgSsaoProgram->SetArray2f(i, (float *)samples2, NUM_PRECOMPUTED_SAMPLES);
|
---|
[2875] | 859 | }
|
---|
[3327] | 860 |
|
---|
| 861 | sCgSsaoProgram->SetTexture(i, sampleTex2D);
|
---|
| 862 |
|
---|
[3095] | 863 | ++ i;
|
---|
[2859] | 864 |
|
---|
[3095] | 865 | for (int j = 0; j < 4; ++ j, ++ i)
|
---|
[3324] | 866 | {
|
---|
[3095] | 867 | sCgSsaoProgram->SetValue3f(i, mCornersView[j].x, mCornersView[j].y, mCornersView[j].z);
|
---|
[3324] | 868 | }
|
---|
[2987] | 869 |
|
---|
[3095] | 870 | sCgSsaoProgram->SetMatrix(i ++, mProjViewMatrix);
|
---|
| 871 | sCgSsaoProgram->SetMatrix(i ++, mOldProjViewMatrix);
|
---|
[3062] | 872 |
|
---|
[3105] | 873 | Vector3 de;
|
---|
| 874 | de.x = mOldEyePos.x - mEyePos.x;
|
---|
| 875 | de.y = mOldEyePos.y - mEyePos.y;
|
---|
| 876 | de.z = mOldEyePos.z - mEyePos.z;
|
---|
[3035] | 877 |
|
---|
[3095] | 878 | sCgSsaoProgram->SetValue3f(i ++, de.x, de.y, de.z);
|
---|
[3093] | 879 |
|
---|
[3095] | 880 | for (int j = 0; j < 4; ++ j, ++ i)
|
---|
[3212] | 881 | {
|
---|
[3095] | 882 | sCgSsaoProgram->SetValue3f(i, mOldCornersView[j].x, mOldCornersView[j].y, mOldCornersView[j].z);
|
---|
[3212] | 883 | }
|
---|
[3085] | 884 |
|
---|
[3110] | 885 | sCgSsaoProgram->SetTexture(i ++, attribsTex);
|
---|
[3212] | 886 | sCgSsaoProgram->SetValue1f(i ++, mKernelRadius);
|
---|
[3227] | 887 | sCgSsaoProgram->SetValue1f(i ++, mSampleIntensity * mKernelRadius);
|
---|
[3110] | 888 |
|
---|
[3026] | 889 | DrawQuad(sCgSsaoProgram);
|
---|
[3006] | 890 | glPopAttrib();
|
---|
[2859] | 891 |
|
---|
| 892 | PrintGLerror("ssao first pass");
|
---|
| 893 | }
|
---|
| 894 |
|
---|
| 895 |
|
---|
[2865] | 896 | static void SetVertex(float x, float y, float x_offs, float y_offs)
|
---|
| 897 | {
|
---|
| 898 | glMultiTexCoord2fARB(GL_TEXTURE0_ARB, x, y); // center
|
---|
| 899 | glMultiTexCoord2fARB(GL_TEXTURE1_ARB, x - x_offs, y + y_offs); // left top
|
---|
| 900 | glMultiTexCoord2fARB(GL_TEXTURE2_ARB, x + x_offs, y - y_offs); // right bottom
|
---|
| 901 | glMultiTexCoord2fARB(GL_TEXTURE3_ARB, x + x_offs, y + y_offs); // right top
|
---|
| 902 | glMultiTexCoord2fARB(GL_TEXTURE4_ARB, x - x_offs, y - y_offs); // left bottom
|
---|
| 903 |
|
---|
| 904 | glMultiTexCoord4fARB(GL_TEXTURE5_ARB, x - x_offs, y, x + x_offs, y); // left right
|
---|
| 905 | glMultiTexCoord4fARB(GL_TEXTURE6_ARB, x, y + y_offs, x, y - y_offs); // top bottom
|
---|
| 906 |
|
---|
[3089] | 907 | //glVertex3f(x - 0.5f, y - 0.5f, -0.5f);
|
---|
| 908 | glVertex2f(x, y);
|
---|
[2865] | 909 | }
|
---|
| 910 |
|
---|
| 911 |
|
---|
[3219] | 912 | void DeferredRenderer::AntiAliasing(FrameBufferObject *fbo,
|
---|
| 913 | DirectionalLight *light,
|
---|
| 914 | bool displayFrame)
|
---|
[2865] | 915 | {
|
---|
[2968] | 916 | ColorBufferObject *colorBuffer = fbo->GetColorBuffer(colorBufferIdx);
|
---|
| 917 | GLuint colorsTex = colorBuffer->GetTexture();
|
---|
[3136] | 918 | GLuint normalsTex = fbo->GetColorBuffer(1)->GetTexture();
|
---|
[3007] | 919 |
|
---|
[3132] | 920 | // read the second buffer, write to the first buffer
|
---|
[3219] | 921 | if (!displayFrame)
|
---|
[3327] | 922 | {
|
---|
[3219] | 923 | FlipFbos(fbo);
|
---|
[3327] | 924 | }
|
---|
[3219] | 925 | else
|
---|
[3327] | 926 | {
|
---|
[3219] | 927 | // end of the pipeline => just draw image to screen
|
---|
| 928 | FrameBufferObject::Release();
|
---|
[3327] | 929 | }
|
---|
[3132] | 930 |
|
---|
[3136] | 931 | // the neighbouring texels
|
---|
| 932 | float xOffs = 1.0f / fbo->GetWidth();
|
---|
| 933 | float yOffs = 1.0f / fbo->GetHeight();
|
---|
| 934 |
|
---|
[3034] | 935 | sCgAntiAliasingProgram->SetTexture(0, colorsTex);
|
---|
| 936 | sCgAntiAliasingProgram->SetTexture(1, normalsTex);
|
---|
[2865] | 937 |
|
---|
[3136] | 938 | float offsets[16];
|
---|
| 939 | int i = 0;
|
---|
[2868] | 940 |
|
---|
[3136] | 941 | offsets[i] = -xOffs; offsets[i + 1] = yOffs; i += 2; // left top
|
---|
| 942 | offsets[i] = xOffs; offsets[i + 1] = -yOffs; i += 2; // right bottom
|
---|
| 943 | offsets[i] = xOffs; offsets[i + 1] = yOffs; i += 2; // right top
|
---|
| 944 | offsets[i] = -xOffs; offsets[i + 1] = -yOffs; i += 2; // left bottom
|
---|
| 945 | offsets[i] = -xOffs; offsets[i + 1] = .0f; i += 2; // left
|
---|
| 946 | offsets[i] = xOffs; offsets[i + 1] = .0f; i += 2; // right
|
---|
| 947 | offsets[i] = .0f; offsets[i + 1] = yOffs; i += 2; // top
|
---|
| 948 | offsets[i] = .0f; offsets[i + 1] = -yOffs; i += 2; // bottom
|
---|
[2865] | 949 |
|
---|
[3136] | 950 | sCgAntiAliasingProgram->SetArray2f(2, offsets, 8);
|
---|
[2865] | 951 |
|
---|
[3136] | 952 | DrawQuad(sCgAntiAliasingProgram);
|
---|
[2865] | 953 |
|
---|
[2867] | 954 | PrintGLerror("antialiasing");
|
---|
[2865] | 955 | }
|
---|
| 956 |
|
---|
| 957 |
|
---|
[2952] | 958 | void DeferredRenderer::FirstPass(FrameBufferObject *fbo, DirectionalLight *light)
|
---|
[2868] | 959 | {
|
---|
[2973] | 960 | GLuint colorsTex = fbo->GetColorBuffer(colorBufferIdx)->GetTexture();
|
---|
[3009] | 961 | GLuint normalsTex = fbo->GetColorBuffer(1)->GetTexture();
|
---|
[2868] | 962 |
|
---|
[3132] | 963 | FlipFbos(fbo);
|
---|
[2868] | 964 |
|
---|
[3026] | 965 | const Vector3 lightDir = -light->GetDirection();
|
---|
[2868] | 966 |
|
---|
[3034] | 967 | sCgDeferredProgram->SetTexture(0, colorsTex);
|
---|
| 968 | sCgDeferredProgram->SetTexture(1, normalsTex);
|
---|
| 969 | sCgDeferredProgram->SetValue3f(2, lightDir.x, lightDir.y, lightDir.z);
|
---|
[2868] | 970 |
|
---|
[3026] | 971 | DrawQuad(sCgDeferredProgram);
|
---|
[2952] | 972 |
|
---|
[2868] | 973 | PrintGLerror("deferred shading");
|
---|
| 974 | }
|
---|
| 975 |
|
---|
[2869] | 976 |
|
---|
[2896] | 977 | void DeferredRenderer::ComputeGlobIllum(FrameBufferObject *fbo,
|
---|
[3085] | 978 | float tempCohFactor)
|
---|
[2869] | 979 | {
|
---|
[3016] | 980 | #if 0
|
---|
| 981 | GLuint colorsTex = fbo->GetColorBuffer(colorBufferIdx)->GetTexture();
|
---|
| 982 | GLuint normalsTex = fbo->GetColorBuffer(1)->GetTexture();
|
---|
| 983 | #else
|
---|
[3003] | 984 | GLuint colorsTex = mDownSampleFbo->GetColorBuffer(0)->GetTexture();
|
---|
[3009] | 985 | GLuint normalsTex = mDownSampleFbo->GetColorBuffer(1)->GetTexture();
|
---|
[3016] | 986 | #endif
|
---|
[2869] | 987 |
|
---|
[3006] | 988 | glPushAttrib(GL_VIEWPORT_BIT);
|
---|
[3019] | 989 | glViewport(0, 0, mIllumFbo->GetWidth(), mIllumFbo->GetHeight());
|
---|
[2869] | 990 |
|
---|
[2873] | 991 | // read the second buffer, write to the first buffer
|
---|
[3019] | 992 | mIllumFbo->Bind();
|
---|
| 993 | glDrawBuffers(2, mrt + mIllumFboIndex);
|
---|
[2873] | 994 |
|
---|
[3326] | 995 | // bind the old buffers for temporal coherence
|
---|
[3019] | 996 | GLuint oldSsaoTex = mIllumFbo->GetColorBuffer(2 - mIllumFboIndex)->GetTexture();
|
---|
| 997 | GLuint oldIllumTex = mIllumFbo->GetColorBuffer(2 - mIllumFboIndex + 1)->GetTexture();
|
---|
[2869] | 998 |
|
---|
[3160] | 999 | int i = 0;
|
---|
[2869] | 1000 |
|
---|
[3160] | 1001 | sCgGiProgram->SetTexture(i ++, colorsTex);
|
---|
| 1002 | sCgGiProgram->SetTexture(i ++, normalsTex);
|
---|
| 1003 | sCgGiProgram->SetTexture(i ++, noiseTex2D);
|
---|
| 1004 | sCgGiProgram->SetTexture(i ++, oldSsaoTex);
|
---|
| 1005 | sCgGiProgram->SetTexture(i ++, oldIllumTex);
|
---|
| 1006 |
|
---|
| 1007 | sCgGiProgram->SetValue1f(i ++,
|
---|
[3026] | 1008 | (mUseTemporalCoherence && !mRegenerateSamples) ? tempCohFactor : 0);
|
---|
[2869] | 1009 |
|
---|
[2895] | 1010 | if (mUseTemporalCoherence || mRegenerateSamples)
|
---|
[2875] | 1011 | {
|
---|
[2895] | 1012 | mRegenerateSamples = false;
|
---|
[2873] | 1013 |
|
---|
[2875] | 1014 | // q: should we generate new samples or only rotate the old ones?
|
---|
| 1015 | // in the first case, the sample patterns look nicer, but the kernel
|
---|
| 1016 | // needs longer to converge
|
---|
[2895] | 1017 | GenerateSamples(mSamplingMethod);
|
---|
[2903] | 1018 |
|
---|
[3160] | 1019 | sCgGiProgram->SetArray2f(i ++, (float *)samples2, NUM_SAMPLES);
|
---|
[2875] | 1020 | }
|
---|
| 1021 |
|
---|
[3085] | 1022 | Vector3 bl = mCornersView[0];
|
---|
| 1023 | Vector3 br = mCornersView[1];
|
---|
| 1024 | Vector3 tl = mCornersView[2];
|
---|
| 1025 | Vector3 tr = mCornersView[3];
|
---|
[2895] | 1026 |
|
---|
[3160] | 1027 | sCgGiProgram->SetValue3f(i ++, bl.x, bl.y, bl.z);
|
---|
| 1028 | sCgGiProgram->SetValue3f(i ++, br.x, br.y, br.z);
|
---|
| 1029 | sCgGiProgram->SetValue3f(i ++, tl.x, tl.y, tl.z);
|
---|
| 1030 | sCgGiProgram->SetValue3f(i ++, tr.x, tr.y, tr.z);
|
---|
[2873] | 1031 |
|
---|
[3160] | 1032 | sCgGiProgram->SetMatrix(i ++, mOldProjViewMatrix);
|
---|
| 1033 | sCgGiProgram->SetMatrix(i ++, mProjViewMatrix);
|
---|
[3035] | 1034 |
|
---|
| 1035 |
|
---|
[3026] | 1036 | DrawQuad(sCgGiProgram);
|
---|
[2990] | 1037 |
|
---|
[3006] | 1038 | glPopAttrib();
|
---|
| 1039 |
|
---|
[2873] | 1040 | PrintGLerror("globillum first pass");
|
---|
[2869] | 1041 | }
|
---|
| 1042 |
|
---|
| 1043 |
|
---|
[2896] | 1044 | void DeferredRenderer::CombineIllum(FrameBufferObject *fbo)
|
---|
[2880] | 1045 | {
|
---|
[2973] | 1046 | GLuint colorsTex = fbo->GetColorBuffer(colorBufferIdx)->GetTexture();
|
---|
[2884] | 1047 |
|
---|
[3019] | 1048 | GLuint ssaoTex = mIllumFbo->GetColorBuffer(mIllumFboIndex)->GetTexture();
|
---|
| 1049 | GLuint illumTex = mIllumFbo->GetColorBuffer(mIllumFboIndex + 1)->GetTexture();
|
---|
[2880] | 1050 |
|
---|
[3132] | 1051 | FlipFbos(fbo);
|
---|
[2891] | 1052 |
|
---|
[3036] | 1053 | sCgCombineIllumProgram->SetTexture(0, colorsTex);
|
---|
| 1054 | sCgCombineIllumProgram->SetTexture(1, ssaoTex);
|
---|
| 1055 | sCgCombineIllumProgram->SetTexture(2, illumTex);
|
---|
[2880] | 1056 |
|
---|
[3026] | 1057 | DrawQuad(sCgCombineIllumProgram);
|
---|
[2880] | 1058 |
|
---|
| 1059 | PrintGLerror("combine");
|
---|
| 1060 | }
|
---|
| 1061 |
|
---|
| 1062 |
|
---|
[3301] | 1063 | void DeferredRenderer::FilterSsao(FrameBufferObject *fbo)
|
---|
[2880] | 1064 | {
|
---|
[2973] | 1065 | GLuint colorsTex = fbo->GetColorBuffer(colorBufferIdx)->GetTexture();
|
---|
[3103] | 1066 | GLuint normalsTex = fbo->GetColorBuffer(1)->GetTexture();
|
---|
[3144] | 1067 | GLuint ssaoTex = mIllumFbo->GetColorBuffer(mIllumFboIndex)->GetTexture();
|
---|
[3132] | 1068 |
|
---|
[3305] | 1069 | mTempFbo->Bind();
|
---|
| 1070 | glDrawBuffers(1, mrt);
|
---|
[3301] | 1071 |
|
---|
[3104] | 1072 | int i = 0;
|
---|
[3148] | 1073 |
|
---|
[3301] | 1074 | sCgFilterSsaoProgram->SetTexture(i ++, colorsTex);
|
---|
| 1075 | sCgFilterSsaoProgram->SetTexture(i ++, ssaoTex);
|
---|
[3017] | 1076 |
|
---|
[3163] | 1077 | for (int j = 0; j < 4; ++ j, ++ i)
|
---|
[3296] | 1078 | {
|
---|
[3301] | 1079 | sCgFilterSsaoProgram->SetValue3f(i, mCornersView[j].x, mCornersView[j].y, mCornersView[j].z);
|
---|
[3296] | 1080 | }
|
---|
[3134] | 1081 |
|
---|
[3305] | 1082 | sCgFilterSsaoProgram->SetValue2f(i ++, (float)mWidth, (float)mHeight);
|
---|
[3319] | 1083 | sCgFilterSsaoProgram->SetValue1f(i ++, mMaxConvergence);
|
---|
| 1084 | sCgFilterSsaoProgram->SetValue1f(i ++, mSpatialWeight);
|
---|
[3300] | 1085 |
|
---|
[3301] | 1086 | DrawQuad(sCgFilterSsaoProgram);
|
---|
[3340] | 1087 | PrintGLerror("filter ssao");
|
---|
[2880] | 1088 | }
|
---|
| 1089 |
|
---|
| 1090 |
|
---|
[3301] | 1091 | void DeferredRenderer::CombineSsao(FrameBufferObject *fbo)
|
---|
[3296] | 1092 | {
|
---|
| 1093 | GLuint colorsTex = fbo->GetColorBuffer(colorBufferIdx)->GetTexture();
|
---|
| 1094 | GLuint normalsTex = fbo->GetColorBuffer(1)->GetTexture();
|
---|
[3305] | 1095 | GLuint ssaoTex = mTempFbo->GetColorBuffer(0)->GetTexture();
|
---|
[3296] | 1096 |
|
---|
| 1097 | FlipFbos(fbo);
|
---|
| 1098 |
|
---|
| 1099 | int i = 0;
|
---|
| 1100 |
|
---|
| 1101 | sCgCombineSsaoProgram->SetTexture(i ++, colorsTex);
|
---|
| 1102 | sCgCombineSsaoProgram->SetTexture(i ++, ssaoTex);
|
---|
| 1103 |
|
---|
| 1104 | for (int j = 0; j < 4; ++ j, ++ i)
|
---|
| 1105 | {
|
---|
| 1106 | sCgCombineSsaoProgram->SetValue3f(i, mCornersView[j].x, mCornersView[j].y, mCornersView[j].z);
|
---|
| 1107 | }
|
---|
| 1108 |
|
---|
[3305] | 1109 | sCgCombineSsaoProgram->SetValue2f(i ++, mWidth, mHeight);
|
---|
[3319] | 1110 | sCgCombineSsaoProgram->SetValue1f(i ++, mMaxConvergence);
|
---|
| 1111 | sCgCombineSsaoProgram->SetValue1f(i ++, mSpatialWeight);
|
---|
[3296] | 1112 |
|
---|
| 1113 | DrawQuad(sCgCombineSsaoProgram);
|
---|
| 1114 |
|
---|
| 1115 | PrintGLerror("combine ssao");
|
---|
| 1116 | }
|
---|
| 1117 |
|
---|
| 1118 |
|
---|
[2952] | 1119 | void DeferredRenderer::FirstPassShadow(FrameBufferObject *fbo,
|
---|
| 1120 | DirectionalLight *light,
|
---|
| 1121 | ShadowMap *shadowMap)
|
---|
[2895] | 1122 | {
|
---|
[2973] | 1123 | GLuint colorsTex = fbo->GetColorBuffer(colorBufferIdx)->GetTexture();
|
---|
[3009] | 1124 | GLuint normalsTex = fbo->GetColorBuffer(1)->GetTexture();
|
---|
[2973] | 1125 |
|
---|
[2928] | 1126 | GLuint shadowTex = shadowMap->GetDepthTexture();
|
---|
[2895] | 1127 |
|
---|
| 1128 | Matrix4x4 shadowMatrix;
|
---|
| 1129 | shadowMap->GetTextureMatrix(shadowMatrix);
|
---|
| 1130 |
|
---|
| 1131 |
|
---|
[3132] | 1132 | FlipFbos(fbo);
|
---|
| 1133 |
|
---|
[3035] | 1134 | sCgDeferredShadowProgram->SetTexture(0, colorsTex);
|
---|
| 1135 | sCgDeferredShadowProgram->SetTexture(1, normalsTex);
|
---|
| 1136 | sCgDeferredShadowProgram->SetTexture(2, shadowTex);
|
---|
[3129] | 1137 | sCgDeferredShadowProgram->SetTexture(3, noiseTex2D);
|
---|
[3035] | 1138 | sCgDeferredShadowProgram->SetMatrix(4, shadowMatrix);
|
---|
| 1139 | sCgDeferredShadowProgram->SetValue1f(5, 2.0f / shadowMap->GetSize());
|
---|
[3027] | 1140 |
|
---|
[3026] | 1141 | const Vector3 lightDir = -light->GetDirection();
|
---|
[3035] | 1142 | sCgDeferredShadowProgram->SetValue3f(6, lightDir.x, lightDir.y, lightDir.z);
|
---|
[3085] | 1143 | sCgDeferredShadowProgram->SetValue3f(7, mEyePos.x, mEyePos.y, mEyePos.z);
|
---|
[2952] | 1144 |
|
---|
[3026] | 1145 | DrawQuad(sCgDeferredShadowProgram);
|
---|
[2895] | 1146 |
|
---|
| 1147 | PrintGLerror("deferred shading + shadows");
|
---|
| 1148 | }
|
---|
| 1149 |
|
---|
| 1150 |
|
---|
[2973] | 1151 | void DeferredRenderer::ComputeToneParameters(FrameBufferObject *fbo,
|
---|
| 1152 | DirectionalLight *light,
|
---|
| 1153 | float &imageKey,
|
---|
| 1154 | float &whiteLum,
|
---|
| 1155 | float &middleGrey)
|
---|
[2972] | 1156 | {
|
---|
[2975] | 1157 | // hack: estimate value where sky burns out
|
---|
[3010] | 1158 | whiteLum = log(WHITE_LUMINANCE);
|
---|
[2973] | 1159 |
|
---|
[2975] | 1160 | ////////////////////
|
---|
| 1161 | //-- linear interpolate brightness key depending on the current sun position
|
---|
[2973] | 1162 |
|
---|
| 1163 | const float minKey = 0.09f;
|
---|
[3020] | 1164 | const float maxKey = 0.36f;
|
---|
[2973] | 1165 |
|
---|
| 1166 | const float lightIntensity = DotProd(-light->GetDirection(), Vector3::UNIT_Z());
|
---|
| 1167 | middleGrey = lightIntensity * maxKey + (1.0f - lightIntensity) * minKey;
|
---|
[2991] | 1168 |
|
---|
[2993] | 1169 |
|
---|
[2991] | 1170 | //////////
|
---|
| 1171 | //-- compute avg loglum
|
---|
| 1172 |
|
---|
| 1173 | ColorBufferObject *colorBuffer = fbo->GetColorBuffer(colorBufferIdx);
|
---|
[2992] | 1174 | GLuint colorsTex = colorBuffer->GetTexture();
|
---|
[2991] | 1175 |
|
---|
[3132] | 1176 | FlipFbos(fbo);
|
---|
[2991] | 1177 |
|
---|
[3035] | 1178 | sCgLogLumProgram->SetTexture(0, colorsTex);
|
---|
[3026] | 1179 | DrawQuad(sCgLogLumProgram);
|
---|
[2991] | 1180 |
|
---|
| 1181 | PrintGLerror("ToneMapParams");
|
---|
| 1182 |
|
---|
| 1183 |
|
---|
| 1184 | ///////////////////
|
---|
| 1185 | //-- compute avg loglum in scene using mipmapping
|
---|
| 1186 |
|
---|
[3008] | 1187 | glBindTexture(GL_TEXTURE_2D, fbo->GetColorBuffer(colorBufferIdx)->GetTexture());
|
---|
| 1188 | glGenerateMipmapEXT(GL_TEXTURE_2D);
|
---|
[2972] | 1189 | }
|
---|
| 1190 |
|
---|
| 1191 |
|
---|
[3003] | 1192 | static void ExportData(float *data, int w, int h)
|
---|
| 1193 | {
|
---|
| 1194 | startil();
|
---|
| 1195 |
|
---|
| 1196 | cout << "w: " << w << " h: " << h << endl;
|
---|
| 1197 | ILstring filename = ILstring("downsample2.jpg");
|
---|
| 1198 | ilRegisterType(IL_FLOAT);
|
---|
| 1199 |
|
---|
| 1200 | const int depth = 1;
|
---|
| 1201 | const int bpp = 4;
|
---|
| 1202 |
|
---|
| 1203 | if (!ilTexImage(w, h, depth, bpp, IL_RGBA, IL_FLOAT, data))
|
---|
| 1204 | {
|
---|
| 1205 | cerr << "IL error " << ilGetError() << endl;
|
---|
| 1206 | stopil();
|
---|
| 1207 | return;
|
---|
| 1208 | }
|
---|
| 1209 |
|
---|
| 1210 | if (!ilSaveImage(filename))
|
---|
| 1211 | {
|
---|
| 1212 | cerr << "TGA write error " << ilGetError() << endl;
|
---|
| 1213 | }
|
---|
| 1214 |
|
---|
| 1215 | stopil();
|
---|
| 1216 | }
|
---|
| 1217 |
|
---|
| 1218 |
|
---|
[3155] | 1219 | void DeferredRenderer::PrepareSsao(FrameBufferObject *fbo)
|
---|
| 1220 | {
|
---|
[3198] | 1221 | GLuint colorsTex = fbo->GetColorBuffer(colorBufferIdx)->GetTexture();
|
---|
[3199] | 1222 | GLuint normalsTex = fbo->GetColorBuffer(1)->GetTexture();
|
---|
[3198] | 1223 | GLuint diffVals = fbo->GetColorBuffer(2)->GetTexture();
|
---|
[3325] | 1224 |
|
---|
[3155] | 1225 | // flip flop between illumination buffers
|
---|
[3198] | 1226 | GLuint oldTex = mIllumFbo->GetColorBuffer(2 - mIllumFboIndex)->GetTexture();
|
---|
[3326] | 1227 | GLuint myTex = mIllumFbo->GetColorBuffer(2 - mIllumFboIndex + 1)->GetTexture();
|
---|
[3155] | 1228 |
|
---|
| 1229 | int i = 0;
|
---|
| 1230 |
|
---|
| 1231 | sCgPrepareSsaoProgram->SetTexture(i ++, colorsTex);
|
---|
[3199] | 1232 | sCgPrepareSsaoProgram->SetTexture(i ++, normalsTex);
|
---|
[3167] | 1233 | sCgPrepareSsaoProgram->SetTexture(i ++, diffVals);
|
---|
[3155] | 1234 | sCgPrepareSsaoProgram->SetTexture(i ++, oldTex);
|
---|
| 1235 |
|
---|
| 1236 | Vector3 de;
|
---|
| 1237 | de.x = mOldEyePos.x - mEyePos.x;
|
---|
| 1238 | de.y = mOldEyePos.y - mEyePos.y;
|
---|
| 1239 | de.z = mOldEyePos.z - mEyePos.z;
|
---|
| 1240 |
|
---|
| 1241 | sCgPrepareSsaoProgram->SetValue3f(i ++, de.x, de.y, de.z);
|
---|
| 1242 |
|
---|
[3156] | 1243 | sCgPrepareSsaoProgram->SetMatrix(i ++, mProjViewMatrix);
|
---|
| 1244 | sCgPrepareSsaoProgram->SetMatrix(i ++, mOldProjViewMatrix);
|
---|
| 1245 |
|
---|
[3326] | 1246 |
|
---|
[3156] | 1247 | for (int j = 0; j < 4; ++ j, ++ i)
|
---|
[3325] | 1248 | {
|
---|
[3156] | 1249 | sCgPrepareSsaoProgram->SetValue3f(i, mOldCornersView[j].x, mOldCornersView[j].y, mOldCornersView[j].z);
|
---|
[3325] | 1250 | }
|
---|
[3156] | 1251 |
|
---|
[3326] | 1252 | sCgPrepareSsaoProgram->SetTexture(i ++, myTex);
|
---|
| 1253 |
|
---|
[3155] | 1254 | glPushAttrib(GL_VIEWPORT_BIT);
|
---|
| 1255 | glViewport(0, 0, mDownSampleFbo->GetWidth(), mDownSampleFbo->GetHeight());
|
---|
| 1256 |
|
---|
| 1257 | mDownSampleFbo->Bind();
|
---|
| 1258 |
|
---|
[3212] | 1259 | // prepare downsampled depth and normal texture for ssao
|
---|
[3199] | 1260 | glDrawBuffers(2, mrt);
|
---|
[3155] | 1261 |
|
---|
| 1262 | DrawQuad(sCgPrepareSsaoProgram);
|
---|
| 1263 |
|
---|
| 1264 | glPopAttrib();
|
---|
| 1265 | PrintGLerror("prepareSsao");
|
---|
| 1266 | }
|
---|
| 1267 |
|
---|
| 1268 |
|
---|
[3103] | 1269 | void DeferredRenderer::DownSample(FrameBufferObject *fbo,
|
---|
| 1270 | int bufferIdx,
|
---|
[3006] | 1271 | FrameBufferObject *downSampleFbo,
|
---|
[3137] | 1272 | int downSampleBufferIdx,
|
---|
| 1273 | ShaderProgram *program)
|
---|
[2972] | 1274 | {
|
---|
[3137] | 1275 | ColorBufferObject *buffer = fbo->GetColorBuffer(bufferIdx);
|
---|
| 1276 | GLuint tex = buffer->GetTexture();
|
---|
[3006] | 1277 |
|
---|
| 1278 | glPushAttrib(GL_VIEWPORT_BIT);
|
---|
| 1279 | glViewport(0, 0, downSampleFbo->GetWidth(), downSampleFbo->GetHeight());
|
---|
[2972] | 1280 |
|
---|
[3137] | 1281 | downSampleFbo->Bind();
|
---|
[2994] | 1282 |
|
---|
[3137] | 1283 | program->SetTexture(0, tex);
|
---|
[3006] | 1284 | glDrawBuffers(1, mrt + downSampleBufferIdx);
|
---|
[2994] | 1285 |
|
---|
[3137] | 1286 | DrawQuad(program);
|
---|
[3005] | 1287 |
|
---|
[3006] | 1288 | glPopAttrib();
|
---|
[3005] | 1289 | PrintGLerror("downsample");
|
---|
[2972] | 1290 | }
|
---|
| 1291 |
|
---|
| 1292 |
|
---|
[2973] | 1293 | void DeferredRenderer::ToneMap(FrameBufferObject *fbo,
|
---|
| 1294 | float imageKey,
|
---|
| 1295 | float whiteLum,
|
---|
| 1296 | float middleGrey)
|
---|
[2972] | 1297 | {
|
---|
| 1298 | ColorBufferObject *colorBuffer = fbo->GetColorBuffer(colorBufferIdx);
|
---|
[2994] | 1299 | GLuint colorsTex = colorBuffer->GetTexture();
|
---|
[3326] | 1300 |
|
---|
[2972] | 1301 |
|
---|
[3132] | 1302 | FlipFbos(fbo);
|
---|
[3007] | 1303 |
|
---|
[3035] | 1304 | sCgToneProgram->SetTexture(0, colorsTex);
|
---|
| 1305 | sCgToneProgram->SetValue1f(1, imageKey);
|
---|
| 1306 | sCgToneProgram->SetValue1f(2, whiteLum);
|
---|
| 1307 | sCgToneProgram->SetValue1f(3, middleGrey);
|
---|
[3007] | 1308 |
|
---|
[3026] | 1309 | DrawQuad(sCgToneProgram);
|
---|
[2972] | 1310 |
|
---|
[2973] | 1311 | PrintGLerror("ToneMap");
|
---|
[2972] | 1312 | }
|
---|
| 1313 |
|
---|
| 1314 |
|
---|
[3132] | 1315 | void DeferredRenderer::Output(FrameBufferObject *fbo)
|
---|
| 1316 | {
|
---|
| 1317 | glPushAttrib(GL_VIEWPORT_BIT);
|
---|
| 1318 | glViewport(0, 0, fbo->GetWidth(), fbo->GetHeight());
|
---|
| 1319 |
|
---|
| 1320 | ColorBufferObject *colorBuffer = fbo->GetColorBuffer(colorBufferIdx);
|
---|
| 1321 | GLuint colorsTex = colorBuffer->GetTexture();
|
---|
| 1322 |
|
---|
| 1323 | sCgDownSampleProgram->SetTexture(0, colorsTex);
|
---|
| 1324 |
|
---|
| 1325 | FrameBufferObject::Release();
|
---|
| 1326 | DrawQuad(sCgDownSampleProgram);
|
---|
| 1327 |
|
---|
[3326] | 1328 | PrintGLerror("Output");
|
---|
[3132] | 1329 | }
|
---|
| 1330 |
|
---|
| 1331 |
|
---|
[3085] | 1332 | void DeferredRenderer::InitFrame()
|
---|
| 1333 | {
|
---|
[3095] | 1334 | for (int i = 0; i < 4; ++ i)
|
---|
[3326] | 1335 | {
|
---|
[3095] | 1336 | mOldCornersView[i] = mCornersView[i];
|
---|
[3326] | 1337 | }
|
---|
[3095] | 1338 |
|
---|
[3085] | 1339 | mOldProjViewMatrix = mProjViewMatrix;
|
---|
[3095] | 1340 | mOldEyePos = mEyePos;
|
---|
[3106] | 1341 | mEyePos = mCamera->GetPosition();
|
---|
[3081] | 1342 |
|
---|
[3104] | 1343 | // hack: temporarily change far to improve precision
|
---|
| 1344 | const float oldFar = mCamera->GetFar();
|
---|
[3106] | 1345 | const float oldNear = mCamera->GetNear();
|
---|
[3132] | 1346 |
|
---|
[3104] | 1347 |
|
---|
[3106] | 1348 | Matrix4x4 matViewing, matProjection;
|
---|
[3104] | 1349 |
|
---|
[3106] | 1350 |
|
---|
| 1351 | ///////////////////
|
---|
| 1352 |
|
---|
[3213] | 1353 | // use view orientation as we assume that the eye point is always in the center
|
---|
| 1354 | // of our coordinate system, this way we have the highest precision near the eye point
|
---|
[3093] | 1355 | mCamera->GetViewOrientationMatrix(matViewing);
|
---|
[3085] | 1356 | mCamera->GetProjectionMatrix(matProjection);
|
---|
| 1357 |
|
---|
| 1358 | mProjViewMatrix = matViewing * matProjection;
|
---|
[3095] | 1359 | ComputeViewVectors(mCamera, mCornersView[0], mCornersView[1], mCornersView[2], mCornersView[3]);
|
---|
[3106] | 1360 |
|
---|
[3085] | 1361 |
|
---|
[3095] | 1362 | // switch roles of old and new fbo
|
---|
| 1363 | // the algorihm uses two input fbos, where the one
|
---|
| 1364 | // contais the color buffer from the last frame,
|
---|
| 1365 | // the other one will be written
|
---|
[3085] | 1366 |
|
---|
[3095] | 1367 | mIllumFboIndex = 2 - mIllumFboIndex;
|
---|
| 1368 |
|
---|
| 1369 | // enable fragment shading
|
---|
| 1370 | ShaderManager::GetSingleton()->EnableFragmentProfile();
|
---|
| 1371 |
|
---|
| 1372 | glDisable(GL_ALPHA_TEST);
|
---|
| 1373 | glDisable(GL_TEXTURE_2D);
|
---|
| 1374 | glDisable(GL_LIGHTING);
|
---|
| 1375 | glDisable(GL_BLEND);
|
---|
| 1376 | glDisable(GL_DEPTH_TEST);
|
---|
| 1377 |
|
---|
| 1378 | glPolygonMode(GL_FRONT, GL_FILL);
|
---|
| 1379 |
|
---|
| 1380 | glMatrixMode(GL_PROJECTION);
|
---|
| 1381 | glPushMatrix();
|
---|
| 1382 | glLoadIdentity();
|
---|
| 1383 |
|
---|
| 1384 | gluOrtho2D(0, 1, 0, 1);
|
---|
| 1385 |
|
---|
| 1386 |
|
---|
| 1387 | glMatrixMode(GL_MODELVIEW);
|
---|
| 1388 | glPushMatrix();
|
---|
| 1389 | glLoadIdentity();
|
---|
| 1390 |
|
---|
| 1391 |
|
---|
| 1392 | glPushAttrib(GL_VIEWPORT_BIT);
|
---|
| 1393 | glViewport(0, 0, mWidth, mHeight);
|
---|
[3128] | 1394 |
|
---|
| 1395 | // revert to old far and near plane
|
---|
[3104] | 1396 | mCamera->SetFar(oldFar);
|
---|
[3106] | 1397 | mCamera->SetNear(oldNear);
|
---|
[3085] | 1398 | }
|
---|
| 1399 |
|
---|
[3212] | 1400 |
|
---|
[3213] | 1401 | void DeferredRenderer::LenseFlare(FrameBufferObject *fbo,
|
---|
[3215] | 1402 | DirectionalLight *light
|
---|
[3213] | 1403 | )
|
---|
[3212] | 1404 | {
|
---|
[3242] | 1405 | // light source visible?
|
---|
[3215] | 1406 | if (!mSunVisiblePixels) return;
|
---|
| 1407 |
|
---|
[3213] | 1408 | // the sun is a large distance in the reverse light direction
|
---|
| 1409 | // => extrapolate light pos
|
---|
| 1410 | const Vector3 lightPos = light->GetDirection() * -1e3f;
|
---|
| 1411 |
|
---|
[3214] | 1412 | float w;
|
---|
| 1413 | Vector3 projLightPos = mProjViewMatrix.Transform(w, lightPos, 1.0f);
|
---|
| 1414 | projLightPos /= w;
|
---|
| 1415 | projLightPos = projLightPos * 0.5f + Vector3(0.5f);
|
---|
[3213] | 1416 |
|
---|
| 1417 | // vector to light from screen center in texture space
|
---|
| 1418 | Vector3 vectorToLight = projLightPos - Vector3(0.5f);
|
---|
| 1419 | vectorToLight.z = .0f;
|
---|
| 1420 |
|
---|
| 1421 | const float distanceToLight = Magnitude(vectorToLight);
|
---|
| 1422 | vectorToLight /= distanceToLight;
|
---|
[3214] | 1423 | //cout << "dist " << distanceToLight << " v " << vectorToLight << endl;
|
---|
[3213] | 1424 |
|
---|
| 1425 |
|
---|
[3212] | 1426 | ColorBufferObject *colorBuffer = fbo->GetColorBuffer(colorBufferIdx);
|
---|
[3213] | 1427 | GLuint colorsTex = colorBuffer->GetTexture();
|
---|
| 1428 |
|
---|
[3212] | 1429 | FlipFbos(fbo);
|
---|
| 1430 |
|
---|
[3213] | 1431 | int i = 0;
|
---|
[3212] | 1432 |
|
---|
[3213] | 1433 | sCgLenseFlareProgram->SetTexture(i ++, colorsTex);
|
---|
| 1434 | sCgLenseFlareProgram->SetTexture(i ++, sHaloTex[0]->GetId());
|
---|
| 1435 | sCgLenseFlareProgram->SetTexture(i ++, sHaloTex[1]->GetId());
|
---|
| 1436 | sCgLenseFlareProgram->SetTexture(i ++, sHaloTex[2]->GetId());
|
---|
| 1437 | sCgLenseFlareProgram->SetTexture(i ++, sHaloTex[3]->GetId());
|
---|
[3214] | 1438 | sCgLenseFlareProgram->SetTexture(i ++, sHaloTex[4]->GetId());
|
---|
[3213] | 1439 | sCgLenseFlareProgram->SetValue2f(i ++, vectorToLight.x, vectorToLight.y);
|
---|
| 1440 | sCgLenseFlareProgram->SetValue1f(i ++, distanceToLight);
|
---|
[3215] | 1441 | sCgLenseFlareProgram->SetValue1f(i ++, (float)mSunVisiblePixels);
|
---|
[3213] | 1442 |
|
---|
[3212] | 1443 | DrawQuad(sCgLenseFlareProgram);
|
---|
| 1444 |
|
---|
| 1445 | PrintGLerror("LenseFlare");
|
---|
| 1446 | }
|
---|
| 1447 |
|
---|
| 1448 |
|
---|
[3232] | 1449 | void DeferredRenderer::DepthOfField(FrameBufferObject *fbo)
|
---|
| 1450 | {
|
---|
| 1451 | ColorBufferObject *colorBuffer = fbo->GetColorBuffer(colorBufferIdx);
|
---|
| 1452 | GLuint colorsTex = colorBuffer->GetTexture();
|
---|
| 1453 |
|
---|
| 1454 | FlipFbos(fbo);
|
---|
| 1455 |
|
---|
| 1456 | int i = 0;
|
---|
| 1457 |
|
---|
[3235] | 1458 | const float zFocus = 7.0f;
|
---|
| 1459 |
|
---|
[3232] | 1460 | sCgDOFProgram->SetTexture(i ++, colorsTex);
|
---|
| 1461 | sCgDOFProgram->SetArray2f(i ++, (float *)dofSamples, NUM_DOF_TABS);
|
---|
[3235] | 1462 | sCgDOFProgram->SetValue1f(i ++, min(mCamera->GetFar(), mMaxDistance) - mCamera->GetNear());
|
---|
| 1463 | sCgDOFProgram->SetValue1f(i ++, zFocus);
|
---|
[3232] | 1464 |
|
---|
| 1465 | DrawQuad(sCgDOFProgram);
|
---|
| 1466 |
|
---|
| 1467 | PrintGLerror("LenseFlare");
|
---|
| 1468 | }
|
---|
| 1469 |
|
---|
| 1470 |
|
---|
[3219] | 1471 | void DeferredRenderer::SaveFrame(FrameBufferObject *fbo)
|
---|
| 1472 | {
|
---|
| 1473 | ColorBufferObject *colorBuffer = fbo->GetColorBuffer(colorBufferIdx);
|
---|
| 1474 | GLuint colorsTex = colorBuffer->GetTexture();
|
---|
[3215] | 1475 |
|
---|
[3219] | 1476 | GLubyte *data = new GLubyte[mWidth * mHeight * 4];
|
---|
| 1477 |
|
---|
| 1478 | // grab texture data
|
---|
| 1479 | glEnable(GL_TEXTURE_2D);
|
---|
| 1480 | glBindTexture(GL_TEXTURE_2D, colorsTex);
|
---|
| 1481 | glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
|
---|
| 1482 |
|
---|
| 1483 | glBindTexture(GL_TEXTURE_2D, 0);
|
---|
| 1484 | glDisable(GL_TEXTURE_2D);
|
---|
| 1485 |
|
---|
| 1486 | /////////////////
|
---|
| 1487 |
|
---|
| 1488 | startil();
|
---|
| 1489 |
|
---|
| 1490 | static char imageName[200];
|
---|
[3287] | 1491 | sprintf(imageName, "%s_%05d.tga", mSavedFrameSuffix.c_str(), mSavedFrameNumber);
|
---|
[3219] | 1492 |
|
---|
| 1493 | ILstring fileName = ILstring(imageName);
|
---|
| 1494 | ilRegisterType(IL_FLOAT);
|
---|
| 1495 |
|
---|
| 1496 | const int depth = 1;
|
---|
| 1497 | const int bpp = 4;
|
---|
| 1498 |
|
---|
| 1499 | if (!ilTexImage(mWidth, mHeight, depth, bpp, IL_RGBA, IL_UNSIGNED_BYTE, data))
|
---|
| 1500 | {
|
---|
| 1501 | cerr << "IL error " << ilGetError() << endl;
|
---|
| 1502 | stopil();
|
---|
| 1503 | return;
|
---|
| 1504 | }
|
---|
| 1505 |
|
---|
| 1506 | ilEnable(IL_FILE_OVERWRITE);
|
---|
| 1507 |
|
---|
| 1508 | if (!ilSaveImage(fileName))
|
---|
| 1509 | {
|
---|
| 1510 | cerr << "TGA write error " << ilGetError() << endl;
|
---|
| 1511 | }
|
---|
| 1512 |
|
---|
| 1513 | delete [] data;
|
---|
| 1514 | stopil();
|
---|
| 1515 |
|
---|
| 1516 | PrintGLerror("Store frame");
|
---|
| 1517 | }
|
---|
| 1518 |
|
---|
| 1519 |
|
---|
[3215] | 1520 | void DeferredRenderer::SetUseTemporalCoherence(bool temporal)
|
---|
| 1521 | {
|
---|
| 1522 | mUseTemporalCoherence = temporal;
|
---|
| 1523 | }
|
---|
| 1524 |
|
---|
| 1525 |
|
---|
| 1526 | void DeferredRenderer::SetSamplingMethod(SAMPLING_METHOD s)
|
---|
| 1527 | {
|
---|
| 1528 | if (s != mSamplingMethod)
|
---|
| 1529 | {
|
---|
| 1530 | mSamplingMethod = s;
|
---|
| 1531 | mRegenerateSamples = true;
|
---|
| 1532 | }
|
---|
| 1533 | }
|
---|
| 1534 |
|
---|
| 1535 |
|
---|
| 1536 | void DeferredRenderer::SetShadingMethod(SHADING_METHOD s)
|
---|
| 1537 | {
|
---|
| 1538 | if (s != mShadingMethod)
|
---|
| 1539 | {
|
---|
| 1540 | mShadingMethod = s;
|
---|
| 1541 | mRegenerateSamples = true;
|
---|
| 1542 | }
|
---|
| 1543 | }
|
---|
| 1544 |
|
---|
| 1545 |
|
---|
| 1546 | #if TODO
|
---|
| 1547 |
|
---|
| 1548 | void DeferredRenderer::SetNumSamples(int numSamples)
|
---|
| 1549 | {
|
---|
| 1550 | mNumSamples = numSamples;
|
---|
| 1551 | }
|
---|
| 1552 |
|
---|
| 1553 | #endif
|
---|
| 1554 |
|
---|
| 1555 |
|
---|
| 1556 | void DeferredRenderer::SetSampleIntensity(float sampleIntensity)
|
---|
| 1557 | {
|
---|
| 1558 | mSampleIntensity = sampleIntensity;
|
---|
[3247] | 1559 | mRegenerateSamples = true;
|
---|
[3215] | 1560 | }
|
---|
| 1561 |
|
---|
| 1562 |
|
---|
| 1563 | void DeferredRenderer::SetKernelRadius(float kernelRadius)
|
---|
| 1564 | {
|
---|
| 1565 | mKernelRadius = kernelRadius;
|
---|
[3247] | 1566 | mRegenerateSamples = true;
|
---|
[3215] | 1567 | }
|
---|
| 1568 |
|
---|
| 1569 |
|
---|
[3242] | 1570 | /*void DeferredRenderer::SetSortSamples(bool sortSamples)
|
---|
[3215] | 1571 | {
|
---|
| 1572 | mSortSamples = sortSamples;
|
---|
[3242] | 1573 | }*/
|
---|
[3215] | 1574 |
|
---|
| 1575 |
|
---|
| 1576 | void DeferredRenderer::SetSunVisiblePixels(int pixels)
|
---|
| 1577 | {
|
---|
| 1578 | mSunVisiblePixels = pixels;
|
---|
| 1579 | }
|
---|
| 1580 |
|
---|
| 1581 |
|
---|
[3235] | 1582 | void DeferredRenderer::SetMaxDistance(float maxDist)
|
---|
| 1583 | {
|
---|
| 1584 | mMaxDistance = maxDist;
|
---|
| 1585 | }
|
---|
| 1586 |
|
---|
| 1587 |
|
---|
[3242] | 1588 | void DeferredRenderer::SetUseToneMapping(bool toneMapping)
|
---|
| 1589 | {
|
---|
| 1590 | mUseToneMapping = toneMapping;
|
---|
| 1591 | }
|
---|
| 1592 |
|
---|
| 1593 |
|
---|
| 1594 | void DeferredRenderer::SetUseAntiAliasing(bool antiAliasing)
|
---|
| 1595 | {
|
---|
| 1596 | mUseAntiAliasing = antiAliasing;
|
---|
| 1597 | }
|
---|
| 1598 |
|
---|
| 1599 |
|
---|
| 1600 | void DeferredRenderer::SetUseDepthOfField(bool dof)
|
---|
| 1601 | {
|
---|
| 1602 | mUseDepthOfField = dof;
|
---|
| 1603 | }
|
---|
| 1604 |
|
---|
| 1605 |
|
---|
| 1606 | void DeferredRenderer::SetTemporalCoherenceFactorForSsao(float factor)
|
---|
| 1607 | {
|
---|
| 1608 | mTempCohFactor = factor;
|
---|
| 1609 | }
|
---|
| 1610 |
|
---|
| 1611 |
|
---|
[3220] | 1612 | void DeferredRenderer::SetSaveFrame(const string &suffix, int frameNumber)
|
---|
[3219] | 1613 | {
|
---|
[3220] | 1614 | mSavedFrameSuffix = suffix;
|
---|
[3219] | 1615 | mSavedFrameNumber = frameNumber;
|
---|
| 1616 | }
|
---|
[3215] | 1617 |
|
---|
[3219] | 1618 |
|
---|
[3316] | 1619 | void DeferredRenderer::SetMaxConvergence(float c)
|
---|
| 1620 | {
|
---|
| 1621 | mMaxConvergence = c;
|
---|
| 1622 | }
|
---|
| 1623 |
|
---|
| 1624 |
|
---|
[3319] | 1625 | void DeferredRenderer::SetSpatialWeight(float w)
|
---|
| 1626 | {
|
---|
| 1627 | mSpatialWeight = w;
|
---|
| 1628 | }
|
---|
| 1629 |
|
---|
| 1630 |
|
---|
[2858] | 1631 | } // namespace
|
---|