22 lines
780 B
GLSL
22 lines
780 B
GLSL
extern vec4 gold_seal;
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vec4 effect( vec4 color, Image texture, vec2 texture_coords, vec2 screen_coords )
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{
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//r controls timing
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//a controls alpha, but white will always be 1
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vec4 pixel;
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pixel = Texel(texture, texture_coords);
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number low = min(pixel.r, min(pixel.g, pixel.b));
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number high = max(pixel.r, max(pixel.g, pixel.b));
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number delta;
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delta = high*0.5;
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number fac;
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fac = 0.3+sin((texture_coords.x*450. + sin(gold_seal.r*6.)*180.)-700.*gold_seal.r) - sin((texture_coords.x*190. + texture_coords.y*30.)+1080.3*gold_seal.r);
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pixel.r = max(pixel.r, (1. - pixel.r)*delta*fac + pixel.r);
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pixel.g = max(pixel.g, (1. - pixel.g)*delta*fac + pixel.g);
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pixel.b = max(pixel.b, (1. - pixel.b)*delta*fac + pixel.b);
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return pixel;
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} |