64 lines
2.0 KiB
GLSL
64 lines
2.0 KiB
GLSL
#version 150
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uniform sampler2D colortex0;
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in vec2 texCoord;
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out vec4 fragColor;
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void main() {
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ivec2 pixelSizeInt = textureSize(colortex0, 0);
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vec2 pixelSizeFloat = vec2(pixelSizeInt);
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vec2 texelSize = vec2(1.0) / vec2(textureSize(colortex0, 0));
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// Following is made by Claude, that works (27.5.26)
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/*
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vec3 scene = texture(colortex0, texCoord).rgb;
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float gray = dot(scene, vec3(2.5000, 0.5000, 0.5000)); // Farbkontrolle (Auch genannt, luma weiter oben)
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fragColor = vec4(vec3(gray), 1.0);
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*/
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}
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squareBottomRight() {
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float lumaSum_br = 0.0;
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float lumaSquaredSum_br = 0.0;
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vec3 colorSum_br = vec3(0.0);
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vec3 mean_br = vec3(0.0);
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vec3 mean_luma_br = vec3(0.0);
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float variance_br = 0.0;
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for (int i = 0; i <= 2; i++) {
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for (int j = -2; j <= 0; j++) {
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vec2 offset_br = vec2(float(i), float(j)) * texelSize_br;
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vec3 neighborColor_br = texture(colortex0, texCoord + offset_br).rgb;
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float luma_br = dot(neighborColor_br, vec3(0.299, 0.587, 0.114)); // Basically dasselbe wie float gray weiter unten
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colorSum_br += neighborColor_br;
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lumaSum_br += luma_br;
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lumaSquaredSum_br += (luma_br * luma_br);
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}
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}
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mean_br = (colorSum_br / 9.0);
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mean_luma_br = (lumaSum_br / 9.0);
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variance_br = (lumaSquaredSum_br / 9.0 - (mean_luma_br * mean_luma_br));
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}
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squareBottomLeft() {
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float lumaSum_bl = 0.0;
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float lumaSquaredSum_bl = 0.0;
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vec3 colorSum_bl = vec3(0.0);
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vec3 mean_bl = vec3(0.0);
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vec3 mean_luma_bl = vec3(0.0);
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float variance_bl = 0.0;
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for (int i = -2; i <= 0; i++) {
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for (int j = -2; j <= 0; j++) {
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vec2 offset_bl = vec2(float(i), float(j)) * texelSize_bl;
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vec3 neighborColor_bl = texture(colortex0, texCoord + offset_bl).rgb;
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float luma_bl = dot(neighborColor_bl, vec3(0.299, 0.587, 0.114)); // Basically dasselbe wie float gray weiter unten
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colorSum_bl += neighborColor_bl;
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lumaSum_bl += luma_bl;
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lumaSquaredSum_bl += (luma_bl * luma_bl);
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}
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}
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mean_bl = (colorSum_bl / 9.0);
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mean_luma_bl = (lumaSum_bl / 9.0);
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variance_bl = (lumaSquaredSum_bl / 9.0 - (mean_luma_bl * mean_luma_bl));
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} |