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webcv-shadersource.js
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webcv-shadersource.js
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WebCV.SHADERSOURCE = {
"fragment": {
"convolution": [
"precision mediump float;",
"uniform sampler2D uSampler;",
"uniform mat3 uKernel;",
"uniform vec2 uImageSize; // for pixel based calculation",
"varying vec2 vTextureCoord; // from vertex shader",
"",
"void main() {",
" // to convert to pixel units",
" vec2 px = vec2(1.0, 1.0) / uImageSize;",
" // Two considerations: glsl matrices are column major,",
" // gl coordinates origin is bottom left",
"",
" vec3 neighbourSum = vec3(0.0,0.0,0.0);",
" float totalSum = 0.0;",
"",
" for(int c=0; c<3; c++){",
" for(int r=0; r<3; r++){",
" vec2 offs = vec2(c-1,r-1) * px;",
" float kernelVal = uKernel[c][r];",
" neighbourSum += (texture2D(uSampler, vTextureCoord + offs) * kernelVal).rgb;",
" totalSum += kernelVal;",
" }",
" }",
"",
" gl_FragColor = vec4(neighbourSum / totalSum, 1.0);",
"}"
],
"sobelDerivatives": [
"precision mediump float;",
"uniform sampler2D uSampler;",
"uniform mat3 uKernel;",
"uniform vec2 uImageSize; // for pixel based calculation",
"varying vec2 vTextureCoord; // from vertex shader",
"",
"void main() {",
" // to convert to pixel units",
" vec2 px = vec2(1.0, 1.0) / uImageSize;",
"",
" mat3 sobelX = mat3(-1,-2,-1,0,0,0,1,2,1);",
" mat3 sobelY = mat3(-1,0,1,-2,0,2,-1,0,1);",
"",
" float valueX = 0.0;",
"",
" for(int c=0; c<3; c++){",
" for(int r=0; r<3; r++){",
" vec2 offs = vec2(c-1,r-1) * px;",
" float kernelVal = sobelX[c][r];",
" vec4 colour = texture2D(uSampler, vTextureCoord + offs);",
" float grey = 0.299 * colour.r + 0.587 * colour.g + 0.114 * colour.b;",
"",
" valueX += grey * kernelVal;",
" }",
" }",
"",
" float valueY = 0.0;",
"",
" for(int c=0; c<3; c++){",
" for(int r=0; r<3; r++){",
" vec2 offs = vec2(c-1,r-1) * px;",
" float kernelVal = sobelY[c][r];",
" vec4 colour = texture2D(uSampler, vTextureCoord + offs);",
" float grey = 0.299 * colour.r + 0.587 * colour.g + 0.114 * colour.b;",
"",
" valueY += grey * kernelVal;",
" }",
" }",
"",
" gl_FragColor = vec4(valueX * valueX, valueY * valueY, valueX * valueY, 1.0);",
"}"
],
"benchmark2InOne": [
"precision mediump float;",
"uniform sampler2D uSampler;",
"uniform sampler2D lbpLookupTexture;",
"uniform sampler2D activeWindows;",
"",
"uniform vec2 uImageSize; // for pixel based calculation",
"varying vec2 vTextureCoord; // from vertex shader",
"",
"// The maximum number of weak classifiers in a stage",
"//#define NWEAK 3",
"//#define STAGEN 0",
"#define WINSIZE 24.0",
"",
"uniform vec2 leafValues[NWEAK];",
"uniform vec4 featureRectangles[NWEAK];",
"uniform float stageThreshold;",
"uniform vec2 lbpLookupTableSize;",
"uniform float scale;",
"uniform int scaleN;",
"",
"// round for positive numbers only",
"#define round_pos(x) floor(x+0.5)",
"",
"void main() {",
" // to convert from pixel [0,w) to texture coordinates [0,1)",
" vec2 px = vec2(1.0, 1.0) / uImageSize;",
" vec2 halfpx = 0.5 * px;",
"",
"",
" float sumStage = 0.0;",
"",
" int lbp;",
" float dbg = 1.0;",
"",
" //vec2 pos = gl_FragCoord.xy/uImageSize;",
" //vec2 pos = vTextureCoord.xy/uImageSize;",
" float posx = ((2.0 * gl_FragCoord.x)+.5)/uImageSize.x;",
" float posy = ((gl_FragCoord.y)+.5)/uImageSize.y;",
"",
" for(int w = 0; w < NWEAK; w++) {",
" vec4 rect = featureRectangles[w];",
"",
" float rx = 2.0 * round_pos(scale * rect.x) * px.x;",
" float ry = round_pos(scale * rect.y) * px.y;",
" float rw = round_pos(scale * rect.z) * px.x;",
" float rh = round_pos(scale * rect.w) * px.y;",
"",
" // Top left quadrant",
" float p0 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p1 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p2 = texture2D(uSampler, vec2(posx + rx, posy + (ry + rh))).x; // bottom left pt",
" float p3 = texture2D(uSampler, vec2(posx + rx + rw, posy + (ry + rh))).x; // bottom right",
"",
" float p0_2 = texture2D(uSampler, vec2(px.x + posx + rx, posy + ry)).x; // top left point",
" float p1_2 = texture2D(uSampler, vec2(px.x + posx + rx + rw, posy + ry)).x; // top right pt",
" float p2_2 = texture2D(uSampler, vec2(px.x + posx + rx, posy + (ry + rh))).x; // bottom left pt",
" float p3_2 = texture2D(uSampler, vec2(px.x + posx + rx + rw, posy + (ry + rh))).x; // bottom right",
"",
" // Top right quadrant",
" rx += 2.0 * rw;",
" float p4 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p5 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p6 = texture2D(uSampler, vec2(posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p7 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" float p4_2 = texture2D(uSampler, vec2(px.x + posx + rx, posy + ry)).x; // top left point",
" float p5_2 = texture2D(uSampler, vec2(px.x + posx + rx + rw, posy + ry)).x; // top right pt",
" float p6_2 = texture2D(uSampler, vec2(px.x + posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p7_2 = texture2D(uSampler, vec2(px.x + posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" // Bottom right quadrant",
" ry += 2.0 * rh;",
" float p8 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p9 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p10 = texture2D(uSampler, vec2(posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p11 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" float p8_2 = texture2D(uSampler, vec2(px.x + posx + rx, posy + ry)).x; // top left point",
" float p9_2 = texture2D(uSampler, vec2(px.x + posx + rx + rw, posy + ry)).x; // top right pt",
" float p10_2 = texture2D(uSampler, vec2(px.x + posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p11_2 = texture2D(uSampler, vec2(px.x + posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" // Bottom left quadrant",
" rx -= 2.0 * rw;",
" float p12 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p13 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p14 = texture2D(uSampler, vec2(posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p15 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" float p12_2 = texture2D(uSampler, vec2(px.x + posx + rx, posy + ry)).x; // top left point",
" float p13_2 = texture2D(uSampler, vec2(px.x + posx + rx + rw, posy + ry)).x; // top right pt",
" float p14_2 = texture2D(uSampler, vec2(px.x + posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p15_2 = texture2D(uSampler, vec2(px.x + posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" float c = p8 - p6 - p13 + p3;",
"",
" float r0 = p3 - p2 - p1 + p0;",
" float r1 = p6 - p4 - p3 + p1;",
" float r2 = p7 - p5 - p6 + p4;",
" float r3 = p9 - p7 - p8 + p6;",
" float r4 = p11 - p9 - p10 + p8;",
" float r5 = p10 - p8 - p15 + p13;",
" float r6 = p15 - p13 - p14 + p12;",
" float r7 = p13 - p3 - p12 + p2;",
"",
" float c_2 = p8_2 - p6_2 - p13_2 + p3_2;",
"",
" float r0_2 = p3_2 - p2_2 - p1_2 + p0_2;",
" float r1_2 = p6_2 - p4_2 - p3_2 + p1_2;",
" float r2_2 = p7_2 - p5_2 - p6_2 + p4_2;",
" float r3_2 = p9_2 - p7_2 - p8_2 + p6_2;",
" float r4_2 = p11_2 - p9_2 - p10_2 + p8_2;",
" float r5_2 = p10_2 - p8_2 - p15_2 + p13_2;",
" float r6_2 = p15_2 - p13_2 - p14_2 + p12_2;",
" float r7_2 = p13_2 - p3_2 - p12_2 + p2_2;",
"",
" dbg += r0+r1+r2+r3+r4+r5+r6+r7+c;",
" dbg += r0_2+r1_2+r2_2+r3_2+r4_2+r5_2+r6_2+r7_2+c_2;",
" }",
" gl_FragColor = vec4(float(mod(dbg,255.))/256., 0.0, 0.0, 1.0);",
"",
"}"
],
"lbpStage4InOne": [
"#line 0",
"precision mediump float;",
"uniform sampler2D uSampler;",
"uniform sampler2D lbpLookupTexture;",
"uniform sampler2D activeWindows;",
"",
"uniform vec2 uImageSize; // for pixel based calculation",
"varying vec2 vTextureCoord; // from vertex shader",
"",
"// The maximum number of weak classifiers in a stage",
"//#define NWEAK 3",
"//#define STAGEN 0",
"#define WINSIZE 24.0",
"",
"uniform vec2 leafValues[NWEAK];",
"uniform vec4 featureRectangles[NWEAK];",
"uniform float stageThreshold;",
"uniform vec2 lbpLookupTableSize;",
"uniform float scale;",
"uniform int scaleN;",
"",
"// round for positive numbers only",
"#define round_pos(x) floor(x+0.5)",
"",
"void main() {",
" // to convert from pixel [0,w) to texture coordinates [0,1)",
" vec2 px = vec2(1.0, 1.0) / uImageSize;",
" vec2 halfpx = 0.5 * px;",
"",
"",
" float sumStage = 0.0;",
"",
" int lbp;",
" float dbg = 1.0;",
"",
" vec2 pos = ((2.0 * gl_FragCoord.xy)+.5)/uImageSize;",
" float posx = pos.x;",
" float posy = pos.y;",
"",
" bool acceptedFromPreviousStage;",
"",
"#if STAGEN > 0",
" acceptedFromPreviousStage = true;//XXX texture2D(activeWindows, vec2(posx, posy)).x > 0.0;",
"#else",
" acceptedFromPreviousStage = true;",
"#endif",
"",
" if (acceptedFromPreviousStage) {",
"",
" mat2 sumStageMat = mat2(0.0,0.0,0.0,0.0);",
"",
" for(int w = 0; w < NWEAK; w++) {",
" vec4 rect = featureRectangles[w];",
"",
" for(float xoffs=0.; xoffs<=1.; xoffs+=1.) {",
" for(float yoffs=0.; yoffs<=1.; yoffs+=1.) {",
"",
" float rx = round_pos(scale * rect.x) * px.x;",
" float ry = round_pos(scale * rect.y) * px.y;",
" float rw = round_pos(scale * rect.z) * px.x;",
" float rh = round_pos(scale * rect.w) * px.y;",
"",
" // Top left quadrant",
" float p0 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, (yoffs*px.y) + posy + ry)).x; // top left point",
" float p1 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, (yoffs*px.y) + posy + ry)).x; // top right pt",
" float p2 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, (yoffs*px.y) + posy + (ry + rh))).x; // bottom left pt",
" float p3 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, (yoffs*px.y) + posy + (ry + rh))).x; // bottom right",
"",
" // Top right quadrant",
" rx += 2.0 * rw;",
" float p4 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, (yoffs*px.y) + posy + ry)).x; // top left point",
" float p5 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, (yoffs*px.y) + posy + ry)).x; // top right pt",
" float p6 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, (yoffs*px.y) + posy + ry + rh)).x; // bottom left pt",
" float p7 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, (yoffs*px.y) + posy + ry + rh)).x; // bottom right",
"",
" // Bottom right quadrant",
" ry += 2.0 * rh;",
" float p8 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, (yoffs*px.y) + posy + ry)).x; // top left point",
" float p9 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, (yoffs*px.y) + posy + ry)).x; // top right pt",
" float p10 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, (yoffs*px.y) + posy + ry + rh)).x; // bottom left pt",
" float p11 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, (yoffs*px.y) + posy + ry + rh)).x; // bottom right",
"",
" // Bottom left quadrant",
" rx -= 2.0 * rw;",
" float p12 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, (yoffs*px.y) + posy + ry)).x; // top left point",
" float p13 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, (yoffs*px.y) + posy + ry)).x; // top right pt",
" float p14 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, (yoffs*px.y) + posy + ry + rh)).x; // bottom left pt",
" float p15 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, (yoffs*px.y) + posy + ry + rh)).x; // bottom right",
"",
" float c = p8 - p6 - p13 + p3;",
"",
" float r0 = p3 - p2 - p1 + p0;",
" float r1 = p6 - p4 - p3 + p1;",
" float r2 = p7 - p5 - p6 + p4;",
" float r3 = p9 - p7 - p8 + p6;",
" float r4 = p11 - p9 - p10 + p8;",
" float r5 = p10 - p8 - p15 + p13;",
" float r6 = p15 - p13 - p14 + p12;",
" float r7 = p13 - p3 - p12 + p2;",
"",
"",
" lbp = (int(r0 > c) * 128) + (int(r1 > c) * 64) + (int(r2 > c) * 32) + (int(r3 > c) * 16) + (int(r4 > c) * 8) + (int(r5 > c) * 4) + (int(r6 > c) * 2) + int(r7 > c);",
"",
" // +0.5 to the numerator to get the pixel centre (since the texture coordinates give the bottom left of pixel)",
"",
" float lookup_x = (float(256 * w + lbp) + 0.5)/(lbpLookupTableSize.x); //float((256 * w + lbp)) / (lbpLookupTableSize.x);",
" float lookup_y = (float(STAGEN) + 0.5)/ (lbpLookupTableSize.y);",
"",
" float bit = texture2D(lbpLookupTexture, vec2(lookup_x, lookup_y)).x;",
"",
" sumStageMat[int(xoffs)][int(yoffs)] += bit * leafValues[w].x + (1.0 - bit) * leafValues[w].y;",
"",
" }",
" }",
"",
"",
" }",
"",
" bool accepted_topleft = (sumStageMat[0][0] > stageThreshold);",
" bool accepted_topright = (sumStageMat[1][0] > stageThreshold);",
" bool accepted_bottomright = (sumStageMat[1][1] > stageThreshold);",
" bool accepted_bottomleft = (sumStageMat[0][1] > stageThreshold);",
"",
" //float acceptedScale = accepted * float(scaleN)/256.0;",
"",
" gl_FragColor = .5 * vec4(accepted_topleft, accepted_topright, accepted_bottomright, accepted_bottomleft);",
"",
"",
" } else {",
" gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0);",
" }",
"",
"#ifdef DEBUG_INTEGRAL",
" dbg = float(texture2D(uSampler, vec2(posx, posy)).x > 1500000.0);",
" gl_FragColor = vec4(dbg, 0.0, 0.0, 1.0);",
"#endif",
"",
"",
"#ifdef DEBUG_SHOWIMG",
" gl_FragColor = vec4(dbg/256.0, 0.0, 0.0, 1.0);",
"#endif",
"",
"}"
],
"benchmark16Lookups_constpixels": [
"precision mediump float;",
"uniform sampler2D uSampler;",
"uniform sampler2D lbpLookupTexture;",
"uniform sampler2D activeWindows;",
"",
"uniform vec2 uImageSize; // for pixel based calculation",
"varying vec2 vTextureCoord; // from vertex shader",
"",
"// The maximum number of weak classifiers in a stage",
"//#define NWEAK 3",
"//#define STAGEN 0",
"#define WINSIZE 24.0",
"",
"uniform vec2 leafValues[NWEAK];",
"uniform vec4 featureRectangles[NWEAK];",
"uniform float stageThreshold;",
"uniform vec2 lbpLookupTableSize;",
"uniform float scale;",
"uniform int scaleN;",
"",
"// round for positive numbers only",
"#define round_pos(x) floor(x+0.5)",
"",
"void main() {",
" // to convert from pixel [0,w) to texture coordinates [0,1)",
" vec2 px = vec2(1.0, 1.0) / uImageSize;",
" vec2 halfpx = 0.5 * px;",
"",
"",
" float sumStage = 0.0;",
"",
" int lbp;",
" float dbg = 1.0;",
"",
" //vec2 pos = gl_FragCoord.xy/uImageSize;",
" vec2 pos = vTextureCoord.xy/uImageSize;",
" float posx = 10.;",
" float posy = 10.;",
"",
" for(int w = 0; w < NWEAK; w++) {",
" vec4 rect = featureRectangles[w];",
"",
" float rx = round_pos(scale * rect.x) * px.x;",
" float ry = round_pos(scale * rect.y) * px.y;",
" float rw = round_pos(scale * rect.z) * px.x;",
" float rh = round_pos(scale * rect.w) * px.y;",
"",
" // Top left quadrant",
" float p0 = texture2D(uSampler, vec2(.5,.5)).x; // top left point",
" float p1 = texture2D(uSampler, vec2(.5,.5)).x; // top right pt",
" float p2 = texture2D(uSampler, vec2(.5,.5)).x; // bottom left pt",
" float p3 = texture2D(uSampler, vec2(.5,.5)).x; // bottom right",
"",
" // Top right quadrant",
" rx += 2.0 * rw;",
" float p4 = texture2D(uSampler, vec2(.5,.5)).x; // top left point",
" float p5 = texture2D(uSampler, vec2(.5,.5)).x; // top right pt",
" float p6 = texture2D(uSampler, vec2(.5,.5)).x; // bottom left pt",
" float p7 = texture2D(uSampler, vec2(.5,.5)).x; // bottom right",
"",
" // Bottom right quadrant",
" ry += 2.0 * rh;",
" float p8 = texture2D(uSampler, vec2(.5,.5)).x; // top left point",
" float p9 = texture2D(uSampler, vec2(.5,.5)).x; // top right pt",
" float p10 = texture2D(uSampler, vec2(.5,.5)).x; // bottom left pt",
" float p11 = texture2D(uSampler, vec2(.5,.5)).x; // bottom right",
"",
" // Bottom left quadrant",
" rx -= 2.0 * rw;",
" float p12 = texture2D(uSampler, vec2(.5,.5)).x; // top left point",
" float p13 = texture2D(uSampler, vec2(.5,.5)).x; // top right pt",
" float p14 = texture2D(uSampler, vec2(.5,.5)).x; // bottom left pt",
" float p15 = texture2D(uSampler, vec2(.5,.5)).x; // bottom right",
"",
" float c = p8 - p6 - p13 + p3;",
"",
" float r0 = p3 - p2 - p1 + p0;",
" float r1 = p6 - p4 - p3 + p1;",
" float r2 = p7 - p5 - p6 + p4;",
" float r3 = p9 - p7 - p8 + p6;",
" float r4 = p11 - p9 - p10 + p8;",
" float r5 = p10 - p8 - p15 + p13;",
" float r6 = p15 - p13 - p14 + p12;",
" float r7 = p13 - p3 - p12 + p2;",
"",
" dbg += r0+r1+r2+r3+r4+r5+r6+r7+c;",
" }",
" gl_FragColor = vec4(float(mod(dbg,255.))/256., 0.0, 0.0, 1.0);",
"",
"}"
],
"lbpStageMultiScale": [
"precision mediump float;",
"uniform sampler2D uSampler;",
"uniform sampler2D lbpLookupTexture;",
"uniform sampler2D activeWindows;",
"",
"uniform vec2 uImageSize; // for pixel based calculation",
"varying vec2 vTextureCoord; // from vertex shader",
"",
"// The maximum number of weak classifiers in a stage",
"//#define NWEAK 3",
"//#define STAGEN 0",
"#define WINSIZE 24.0",
"",
"uniform vec2 leafValues[NWEAK];",
"uniform vec4 featureRectangles[NWEAK];",
"uniform float stageThreshold;",
"uniform vec2 lbpLookupTableSize;",
"//uniform float scale;",
"//uniform int scaleN;",
"uniform float scaleFactor;",
"",
"// round for positive numbers only",
"#define round_pos(x) floor(x+0.5)",
"",
"void main() {",
" // to convert from pixel [0,w) to texture coordinates [0,1)",
" vec2 px = vec2(1.0, 1.0) / uImageSize;",
" vec2 halfpx = 0.5 * px;",
"",
" float sumStage = 0.0;",
"",
" int lbp;",
" float dbg = 1.0;",
"",
" vec2 pos = gl_FragCoord.xy/uImageSize;",
" float posx = pos.x;",
" float posy = pos.y;",
"",
" bool acceptedFromPreviousStage;",
"",
" float accepted;",
" float acceptedScale;;",
"",
"#if STAGEN > 0",
" acceptedFromPreviousStage = texture2D(activeWindows, vec2(posx, posy)).x > 0.0;",
"#else",
" acceptedFromPreviousStage = true;",
"#endif",
"",
" if (acceptedFromPreviousStage) {",
" //const int w = 1;",
" for(int scaleNumber = 0; scaleNumber < NSCALES; scaleNumber++) {",
" for(int w = 0; w < NWEAK; w++) {",
" vec4 rect = featureRectangles[w];",
"",
" float scale = pow(scaleFactor,float(scaleNumber));",
"",
" float rx = round_pos(scale * rect.x) * px.x;",
" float ry = round_pos(scale * rect.y) * px.y;",
" float rw = round_pos(scale * rect.z) * px.x;",
" float rh = round_pos(scale * rect.w) * px.y;",
"",
" // Top left quadrant",
" float p0 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p1 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p2 = texture2D(uSampler, vec2(posx + rx, posy + (ry + rh))).x; // bottom left pt",
" float p3 = texture2D(uSampler, vec2(posx + rx + rw, posy + (ry + rh))).x; // bottom right",
"",
" // Top right quadrant",
" rx += 2.0 * rw;",
" float p4 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p5 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p6 = texture2D(uSampler, vec2(posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p7 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" // Bottom right quadrant",
" ry += 2.0 * rh;",
" float p8 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p9 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p10 = texture2D(uSampler, vec2(posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p11 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" // Bottom left quadrant",
" rx -= 2.0 * rw;",
" float p12 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p13 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p14 = texture2D(uSampler, vec2(posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p15 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" float c = p8 - p6 - p13 + p3;",
"",
" float r0 = p3 - p2 - p1 + p0;",
" float r1 = p6 - p4 - p3 + p1;",
" float r2 = p7 - p5 - p6 + p4;",
" float r3 = p9 - p7 - p8 + p6;",
" float r4 = p11 - p9 - p10 + p8;",
" float r5 = p10 - p8 - p15 + p13;",
" float r6 = p15 - p13 - p14 + p12;",
" float r7 = p13 - p3 - p12 + p2;",
"",
" lbp = (int(r0 > c) * 128) + (int(r1 > c) * 64) + (int(r2 > c) * 32) + (int(r3 > c) * 16) + (int(r4 > c) * 8) + (int(r5 > c) * 4) + (int(r6 > c) * 2) + int(r7 > c);",
"",
" // +0.5 to the numerator to get the pixel centre (since the texture coordinates give the bottom left of pixel)",
"",
" float lookup_x = (float(256 * w + lbp) + 0.5)/(lbpLookupTableSize.x); //float((256 * w + lbp)) / (lbpLookupTableSize.x);",
" float lookup_y = (float(STAGEN) + 0.5)/ (lbpLookupTableSize.y);",
"",
" float bit = texture2D(lbpLookupTexture, vec2(lookup_x, lookup_y)).x;",
"",
" sumStage += bit * leafValues[w].x + (1.0 - bit) * leafValues[w].y;",
"",
" }",
"",
" accepted = float(sumStage > stageThreshold);",
" acceptedScale = accepted * float(scaleNumber+1)/256.0;",
"",
" if(accepted > 0.0) {",
" break;",
" }",
" }",
"",
"",
" gl_FragColor = vec4(acceptedScale, accepted, accepted, accepted);",
"",
" } else {",
" gl_FragColor = vec4(0.0, 0.0, 0.0, 0.0);",
" }",
"",
"",
"#ifdef DEBUG_INTEGRAL",
" dbg = float(texture2D(uSampler, vec2(posx, posy)).x > 1500000.0);",
" gl_FragColor = vec4(dbg, 0.0, 0.0, 1.0);",
"#endif",
"",
"",
"#ifdef DEBUG_SHOWIMG",
" gl_FragColor = vec4(dbg/256.0, 0.0, 0.0, 1.0);",
"#endif",
"",
"}"
],
"benchmark16Lookups": [
"precision mediump float;",
"uniform sampler2D uSampler;",
"uniform sampler2D lbpLookupTexture;",
"uniform sampler2D activeWindows;",
"",
"uniform vec2 uImageSize; // for pixel based calculation",
"varying vec2 vTextureCoord; // from vertex shader",
"",
"// The maximum number of weak classifiers in a stage",
"//#define NWEAK 3",
"//#define STAGEN 0",
"#define WINSIZE 24.0",
"",
"uniform vec2 leafValues[NWEAK];",
"uniform vec4 featureRectangles[NWEAK];",
"uniform float stageThreshold;",
"uniform vec2 lbpLookupTableSize;",
"uniform float scale;",
"uniform int scaleN;",
"",
"// round for positive numbers only",
"#define round_pos(x) floor(x+0.5)",
"",
"void main() {",
" // to convert from pixel [0,w) to texture coordinates [0,1)",
" vec2 px = vec2(1.0, 1.0) / uImageSize;",
" vec2 halfpx = 0.5 * px;",
"",
"",
" float sumStage = 0.0;",
"",
" int lbp;",
" float dbg = 1.0;",
"",
" //vec2 pos = gl_FragCoord.xy/uImageSize;",
" vec2 pos = vTextureCoord.xy/uImageSize;",
" float posx = pos.x;",
" float posy = pos.y;",
"",
" for(int w = 0; w < NWEAK; w++) {",
" vec4 rect = featureRectangles[w];",
"",
" float rx = round_pos(scale * rect.x) * px.x;",
" float ry = round_pos(scale * rect.y) * px.y;",
" float rw = round_pos(scale * rect.z) * px.x;",
" float rh = round_pos(scale * rect.w) * px.y;",
"",
" // Top left quadrant",
" float p0 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p1 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p2 = texture2D(uSampler, vec2(posx + rx, posy + (ry + rh))).x; // bottom left pt",
" float p3 = texture2D(uSampler, vec2(posx + rx + rw, posy + (ry + rh))).x; // bottom right",
"",
" // Top right quadrant",
" rx += 2.0 * rw;",
" float p4 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p5 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p6 = texture2D(uSampler, vec2(posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p7 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" // Bottom right quadrant",
" ry += 2.0 * rh;",
" float p8 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p9 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p10 = texture2D(uSampler, vec2(posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p11 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" // Bottom left quadrant",
" rx -= 2.0 * rw;",
" float p12 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p13 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p14 = texture2D(uSampler, vec2(posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p15 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" float c = p8 - p6 - p13 + p3;",
"",
" float r0 = p3 - p2 - p1 + p0;",
" float r1 = p6 - p4 - p3 + p1;",
" float r2 = p7 - p5 - p6 + p4;",
" float r3 = p9 - p7 - p8 + p6;",
" float r4 = p11 - p9 - p10 + p8;",
" float r5 = p10 - p8 - p15 + p13;",
" float r6 = p15 - p13 - p14 + p12;",
" float r7 = p13 - p3 - p12 + p2;",
"",
" dbg += r0+r1+r2+r3+r4+r5+r6+r7+c;",
" }",
" gl_FragColor = vec4(float(mod(dbg,255.))/256., 0.0, 0.0, 1.0);",
"",
"}"
],
"benchmark16LookupsSum": [
"precision mediump float;",
"uniform sampler2D uSampler;",
"uniform sampler2D lbpLookupTexture;",
"uniform sampler2D activeWindows;",
"",
"uniform vec2 uImageSize; // for pixel based calculation",
"varying vec2 vTextureCoord; // from vertex shader",
"",
"// The maximum number of weak classifiers in a stage",
"//#define NWEAK 3",
"//#define STAGEN 0",
"#define WINSIZE 24.0",
"",
"uniform vec2 leafValues[NWEAK];",
"uniform vec4 featureRectangles[NWEAK];",
"uniform float stageThreshold;",
"uniform vec2 lbpLookupTableSize;",
"uniform float scale;",
"uniform int scaleN;",
"",
"#define SUMVALS(v) ((v).x + (v).y + (v).z + (v).w);",
"",
"// round for positive numbers only",
"#define round_pos(x) floor(x+0.5)",
"",
"void main() {",
" // to convert from pixel [0,w) to texture coordinates [0,1)",
" vec2 px = vec2(1.0, 1.0) / uImageSize;",
" vec2 halfpx = 0.5 * px;",
"",
"",
" float sumStage = 0.0;",
"",
" int lbp;",
" float dbg = 1.0;",
"",
" //vec2 pos = gl_FragCoord.xy/uImageSize;",
" vec2 pos = vTextureCoord.xy/uImageSize;",
" float posx = pos.x;",
" float posy = pos.y;",
"",
" for(int w = 0; w < NWEAK; w++) {",
" vec4 rect = featureRectangles[w];",
"",
" float rx = round_pos(scale * rect.x) * px.x;",
" float ry = round_pos(scale * rect.y) * px.y;",
" float rw = round_pos(scale * rect.z) * px.x;",
" float rh = round_pos(scale * rect.w) * px.y;",
"",
" // Top left quadrant",
" float p0 = SUMVALS(texture2D(uSampler, vec2(posx + rx, posy + ry))); // top left point",
" float p1 = SUMVALS(texture2D(uSampler, vec2(posx + rx + rw, posy + ry))); // top right pt",
" float p2 = SUMVALS(texture2D(uSampler, vec2(posx + rx, posy + (ry + rh)))); // bottom left pt",
" float p3 = SUMVALS(texture2D(uSampler, vec2(posx + rx + rw, posy + (ry + rh)))); // bottom right",
"",
" // Top right quadrant",
" rx += 2.0 * rw;",
" float p4 = SUMVALS(texture2D(uSampler, vec2(posx + rx, posy + ry))); // top left point",
" float p5 = SUMVALS(texture2D(uSampler, vec2(posx + rx + rw, posy + ry))); // top right pt",
" float p6 = SUMVALS(texture2D(uSampler, vec2(posx + rx, posy + ry + rh))); // bottom left pt",
" float p7 = SUMVALS(texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh))); // bottom right",
"",
" // Bottom right quadrant",
" ry += 2.0 * rh;",
" float p8 = SUMVALS(texture2D(uSampler, vec2(posx + rx, posy + ry))); // top left point",
" float p9 = SUMVALS(texture2D(uSampler, vec2(posx + rx + rw, posy + ry))); // top right pt",
" float p10 = SUMVALS(texture2D(uSampler, vec2(posx + rx, posy + ry + rh))); // bottom left pt",
" float p11 = SUMVALS(texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh))); // bottom right",
"",
" // Bottom left quadrant",
" rx -= 2.0 * rw;",
" float p12 = SUMVALS(texture2D(uSampler, vec2(posx + rx, posy + ry))); // top left point",
" float p13 = SUMVALS(texture2D(uSampler, vec2(posx + rx + rw, posy + ry))); // top right pt",
" float p14 = SUMVALS(texture2D(uSampler, vec2(posx + rx, posy + ry + rh))); // bottom left pt",
" float p15 = SUMVALS(texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh))); // bottom right",
"",
" float c = p8 - p6 - p13 + p3;",
"",
" float r0 = p3 - p2 - p1 + p0;",
" float r1 = p6 - p4 - p3 + p1;",
" float r2 = p7 - p5 - p6 + p4;",
" float r3 = p9 - p7 - p8 + p6;",
" float r4 = p11 - p9 - p10 + p8;",
" float r5 = p10 - p8 - p15 + p13;",
" float r6 = p15 - p13 - p14 + p12;",
" float r7 = p13 - p3 - p12 + p2;",
"",
" dbg += r0+r1+r2+r3+r4+r5+r6+r7+c;",
" }",
" gl_FragColor = vec4(float(mod(dbg,255.))/256., 0.0, 0.0, 1.0);",
"",
"}"
],
"benchmark16Lookups_adjacentpixels": [
"precision mediump float;",
"uniform sampler2D uSampler;",
"uniform sampler2D lbpLookupTexture;",
"uniform sampler2D activeWindows;",
"",
"uniform vec2 uImageSize; // for pixel based calculation",
"varying vec2 vTextureCoord; // from vertex shader",
"",
"// The maximum number of weak classifiers in a stage",
"//#define NWEAK 3",
"//#define STAGEN 0",
"#define WINSIZE 24.0",
"",
"uniform vec2 leafValues[NWEAK];",
"uniform vec4 featureRectangles[NWEAK];",
"uniform float stageThreshold;",
"uniform vec2 lbpLookupTableSize;",
"uniform float scale;",
"uniform int scaleN;",
"",
"// round for positive numbers only",
"#define round_pos(x) floor(x+0.5)",
"",
"void main() {",
" // to convert from pixel [0,w) to texture coordinates [0,1)",
" vec2 px = vec2(1.0, 1.0) / uImageSize;",
" vec2 halfpx = 0.5 * px;",
"",
"",
" float sumStage = 0.0;",
"",
" int lbp;",
" float dbg = 1.0;",
"",
" //vec2 pos = gl_FragCoord.xy/uImageSize;",
" vec2 pos = vTextureCoord.xy/uImageSize;",
" float posx = pos.x;",
" float posy = pos.y;",
"",
" for(int w = 0; w < NWEAK; w++) {",
" vec4 rect = featureRectangles[w];",
"",
" // Make adjacent",
" rect.x = -1.;",
" rect.y = -1.;",
" rect.z = 1.;",
" rect.w = 1.;",
"",
" float rx = round_pos(scale * rect.x) * px.x;",
" float ry = round_pos(scale * rect.y) * px.y;",
" float rw = round_pos(scale * rect.z) * px.x;",
" float rh = round_pos(scale * rect.w) * px.y;",
"",
" // Top left quadrant",
" float p0 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p1 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p2 = texture2D(uSampler, vec2(posx + rx, posy + (ry + rh))).x; // bottom left pt",
" float p3 = texture2D(uSampler, vec2(posx + rx + rw, posy + (ry + rh))).x; // bottom right",
"",
" // Top right quadrant",
" rx += 2.0 * rw;",
" float p4 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p5 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p6 = texture2D(uSampler, vec2(posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p7 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" // Bottom right quadrant",
" ry += 2.0 * rh;",
" float p8 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p9 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p10 = texture2D(uSampler, vec2(posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p11 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" // Bottom left quadrant",
" rx -= 2.0 * rw;",
" float p12 = texture2D(uSampler, vec2(posx + rx, posy + ry)).x; // top left point",
" float p13 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry)).x; // top right pt",
" float p14 = texture2D(uSampler, vec2(posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p15 = texture2D(uSampler, vec2(posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" float c = p8 - p6 - p13 + p3;",
"",
" float r0 = p3 - p2 - p1 + p0;",
" float r1 = p6 - p4 - p3 + p1;",
" float r2 = p7 - p5 - p6 + p4;",
" float r3 = p9 - p7 - p8 + p6;",
" float r4 = p11 - p9 - p10 + p8;",
" float r5 = p10 - p8 - p15 + p13;",
" float r6 = p15 - p13 - p14 + p12;",
" float r7 = p13 - p3 - p12 + p2;",
"",
" dbg += r0+r1+r2+r3+r4+r5+r6+r7+c;",
" }",
" gl_FragColor = vec4(float(mod(dbg,255.))/256., 0.0, 0.0, 1.0);",
"",
"}"
],
"integralToBytes": [
"precision highp float;",
"uniform sampler2D uSampler;",
"uniform vec2 uIntegralImageSize;",
"",
"#define integralCoord(v) ((v)/uIntegralImageSize)",
"",
"void main() {",
" float integralVal = texture2D(uSampler, integralCoord(gl_FragCoord.xy)).x;",
"",
" // 2**16 = 65536",
" // 2**8 = 256",
"",
" float byte1 = floor(integralVal/65536.);",
" float byte2 = floor((integralVal - (byte1 * 65536.))/256.);",
" float byte3 = floor((integralVal - floor(integralVal/256.) * 256.));",
"",
" gl_FragColor = vec4(float(byte1)/255.,float(byte2)/255.,float(byte3)/255., 1.0);",
" //float dbg = float(texture2D(uSampler, integralCoord(gl_FragCoord.xy)).x > 1500000.0);",
" //gl_FragColor = vec4(dbg, 0.0, 0.0, 1.0);",
"",
"}"
],
"benchmark2InOne_loop": [
"precision mediump float;",
"uniform sampler2D uSampler;",
"uniform sampler2D lbpLookupTexture;",
"uniform sampler2D activeWindows;",
"",
"uniform vec2 uImageSize; // for pixel based calculation",
"varying vec2 vTextureCoord; // from vertex shader",
"",
"// The maximum number of weak classifiers in a stage",
"//#define NWEAK 3",
"//#define STAGEN 0",
"#define WINSIZE 24.0",
"",
"uniform vec2 leafValues[NWEAK];",
"uniform vec4 featureRectangles[NWEAK];",
"uniform float stageThreshold;",
"uniform vec2 lbpLookupTableSize;",
"uniform float scale;",
"uniform int scaleN;",
"",
"// round for positive numbers only",
"#define round_pos(x) floor(x+0.5)",
"",
"void main() {",
" // to convert from pixel [0,w) to texture coordinates [0,1)",
" vec2 px = vec2(1.0, 1.0) / uImageSize;",
" vec2 halfpx = 0.5 * px;",
"",
"",
" float sumStage = 0.0;",
"",
" int lbp;",
" float dbg = 1.0;",
"",
" //vec2 pos = gl_FragCoord.xy/uImageSize;",
" //vec2 pos = vTextureCoord.xy/uImageSize;",
" float posx = ((2.0 * gl_FragCoord.x)+.5)/uImageSize.x;",
" float posy = ((gl_FragCoord.y)+.5)/uImageSize.y;",
"",
" for(int w = 0; w < NWEAK; w++) {",
" vec4 rect = featureRectangles[w];",
"",
" for(float xoffs=0.; xoffs<=1.; xoffs+=1.) {",
"",
" float rx = 2.0 * round_pos(scale * rect.x) * px.x;",
" float ry = round_pos(scale * rect.y) * px.y;",
" float rw = round_pos(scale * rect.z) * px.x;",
" float rh = round_pos(scale * rect.w) * px.y;",
"",
" // Top left quadrant",
" float p0 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, posy + ry)).x; // top left point",
" float p1 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, posy + ry)).x; // top right pt",
" float p2 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, posy + (ry + rh))).x; // bottom left pt",
" float p3 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, posy + (ry + rh))).x; // bottom right",
"",
"",
" // Top right quadrant",
" rx += 2.0 * rw;",
" float p4 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, posy + ry)).x; // top left point",
" float p5 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, posy + ry)).x; // top right pt",
" float p6 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p7 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" // Bottom right quadrant",
" ry += 2.0 * rh;",
" float p8 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, posy + ry)).x; // top left point",
" float p9 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, posy + ry)).x; // top right pt",
" float p10 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p11 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" // Bottom left quadrant",
" rx -= 2.0 * rw;",
" float p12 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, posy + ry)).x; // top left point",
" float p13 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, posy + ry)).x; // top right pt",
" float p14 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx, posy + ry + rh)).x; // bottom left pt",
" float p15 = texture2D(uSampler, vec2((xoffs*px.x) + posx + rx + rw, posy + ry + rh)).x; // bottom right",
"",
" float c = p8 - p6 - p13 + p3;",
"",
" float r0 = p3 - p2 - p1 + p0;",
" float r1 = p6 - p4 - p3 + p1;",
" float r2 = p7 - p5 - p6 + p4;",
" float r3 = p9 - p7 - p8 + p6;",
" float r4 = p11 - p9 - p10 + p8;",
" float r5 = p10 - p8 - p15 + p13;",
" float r6 = p15 - p13 - p14 + p12;",
" float r7 = p13 - p3 - p12 + p2;",
"",
" dbg += r0+r1+r2+r3+r4+r5+r6+r7+c;",
" }",
" }",
" gl_FragColor = vec4(float(mod(dbg,255.))/256., 0.0, 0.0, 1.0);",
"",
"}"
],
"lbpStage_allactive": [
"precision mediump float;",
"uniform sampler2D uSampler;",
"uniform sampler2D lbpLookupTexture;",
"uniform sampler2D activeWindows;",
"",
"uniform vec2 uImageSize; // for pixel based calculation",
"varying vec2 vTextureCoord; // from vertex shader",
"",
"// The maximum number of weak classifiers in a stage",
"//#define NWEAK 3",
"//#define STAGEN 0",
"#define WINSIZE 24.0",
"",
"uniform vec2 leafValues[NWEAK];",
"uniform vec4 featureRectangles[NWEAK];",
"uniform float stageThreshold;",
"uniform vec2 lbpLookupTableSize;",
"uniform float scale;",
"uniform int scaleN;",
"",