oc1024
3d2ec7aee3
Support for Olive's new blend-mode infrastructure.
Plus, `switch (compo) {` has been replaced with `if {} else if {}` in Color Finder so it runs on OpenGL 2.0 hardware.
84 lines
2.1 KiB
GLSL
84 lines
2.1 KiB
GLSL
/* Filter by color characteristic simple program
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Based on Edward Cannon's Simple Chroma Key (adaptation by Olive Team)
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RGB to HSV based on MattKC's toonify source code
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Feel free to modify and use at will */
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#version 110
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uniform sampler2D tex;
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varying vec2 vTexCoord;
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uniform float loc;
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uniform float hic;
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uniform int compo;
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uniform bool invert;
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float rgb2luma(vec3 c) {
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return (max(max(c.r,c.g), c.b) + min(min(c.r,c.g), c.b))/2.0;
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}
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vec3 rgb2hsv(vec3 c)
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{
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float r = c.r;
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float b = c.b;
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float g = c.g;
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float minv, maxv, delta;
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vec3 res;
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minv = min(min(r, g), b);
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maxv = max(max(r, g), b);
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res.z = maxv; // v
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delta = maxv - minv;
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if( maxv != 0.0 )
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res.y = delta / maxv; // s
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else {
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// r = g = b = 0 // s = 0, v is undefined
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res.y = 0.0;
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res.x = -1.0;
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return res;
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}
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if( r == maxv )
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res.x = ( g - b ) / delta; // between yellow & magenta
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else if( g == maxv )
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res.x = 2.0 + ( b - r ) / delta; // between cyan & yellow
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else
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res.x = 4.0 + ( r - g ) / delta; // between magenta & cyan
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res.x = res.x * 60.0; // degrees
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if( res.x < 0.0 )
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res.x = res.x + 360.0;
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return res;
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}
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bool isNotIncreasingSequence(float a, float b, float c) {
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return (c < b || a > b);
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}
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void main(void) {
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vec4 texture_color = texture2D(tex,vTexCoord);
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vec3 color = texture_color.rgb;
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float toCheck = 0.0;
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if (compo == 0) {
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toCheck = rgb2luma(color)*100.0;
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} else if (compo == 4) {
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toCheck = color.r*100.0;
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} else if (compo == 5) {
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toCheck = color.g*100.0;
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} else if (compo == 6) {
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toCheck = color.b*100.0;
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} else if (compo == 1) {
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toCheck = rgb2hsv(color).z*100.0;
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} else if (compo == 2) {
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toCheck = rgb2hsv(color).x/3.6;
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} else if (compo == 3) {
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toCheck = rgb2hsv(color).y*100.0;
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}
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texture_color.a = isNotIncreasingSequence(loc, toCheck, hic) ? (invert ? texture_color.a : 0.0) : (invert ? 0.0 : texture_color.a);
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texture_color.rgb *= texture_color.a;
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gl_FragColor = texture_color;
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}
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