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https://github.com/Ttanasart-pt/Pixel-Composer.git
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29 lines
650 B
GLSL
29 lines
650 B
GLSL
// Based on FabriceNeyret2 - plop 2 shader
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varying vec2 v_vTexcoord;
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varying vec4 v_vColour;
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uniform vec2 position;
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uniform vec2 scale;
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uniform int iteration;
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uniform float stretch;
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uniform float amplitude;
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uniform int mode;
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void main() {
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vec2 pos = v_vTexcoord * scale + position;
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vec4 col = vec4(0., 0., 0., 1.);
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for (int i = 0; i < iteration; i++) {
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pos += cos( pos.yx * 3. + vec2(0.0, stretch)) / 3.;
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pos += sin( pos.yx + vec2(stretch, 0.0)) / 2.;
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pos *= amplitude;
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}
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if(mode == 0) col += length(mod(pos, 2.) - 1.);
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else col.xy += abs(mod(pos, 2.) - 1.);
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gl_FragColor = col;
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}
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