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70 lines
1.8 KiB
GLSL
70 lines
1.8 KiB
GLSL
9 years ago
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// By Luobin Wang ( @peterobbin )
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// For Shader Studio Course https://github.com/patriciogonzalezvivo/ss2015
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// Inspired on Leo Villareal work
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#ifdef GL_ES
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precision mediump float;
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#endif
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uniform vec2 u_resolution;
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uniform float u_time;
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#define PI 3.14159265359
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float easeInOutQuint(float t, float b, float c, float d) {
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t /= d/2.0;
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if (t < 1.0) return c/2.0*t*t*t*t*t + b;
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t -= 2.0;
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return c/2.0*(t*t*t*t*t + 2.0) + b;
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}
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float plot (vec2 st, float pct){
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return smoothstep( pct-0.01, pct, st.y) -
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smoothstep( pct, pct+0.01, st.y);
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}
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vec3 rgbNormalizer(vec3 color){
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float r = color.r;
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float g = color.g;
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float b = color.b;
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return vec3((r + 1.0)/256.0 , (g + 1.0)/256.0 , (b + 1.0)/256.0 );
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}
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void main() {
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vec2 st = gl_FragCoord.xy/u_resolution;
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vec3 color = vec3(0.0);
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vec3 pct = vec3(st.y);
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vec3 colorWhite = rgbNormalizer(vec3(141.0, 122.0, 79.0));
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vec3 colorBlue = rgbNormalizer(vec3(200.0, 100.0, 100.0));
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float cosT = cos(u_time * 0.05 ) * 2.0 ;
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float sinT = sin(u_time * 0.05 ) * 2.0 ;
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vec2 toCenter = vec2(0.5) - st;
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float angle = atan(toCenter.y, toCenter.x);
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float radius = length(toCenter) * 2.0;
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color = mix(color,rgbNormalizer(vec3(2.0,6.0,89.0)), 1.0);
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float frameBlack = sin(radius*PI*9.0)* 0.2 + 0.8;
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color = mix(color,rgbNormalizer(vec3(4.0,13.0,191.0)), frameBlack);
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float frameV = smoothstep(0.6, 0.0, abs(sin(radius*PI* 0.2 - sinT * 2.0)));
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vec3 colorV = mix(color,rgbNormalizer(vec3(108.0,41.0,41.0)), frameV);
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color += colorV;
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float frameV2 = smoothstep(0.6, 0.0, abs(sin(radius*PI* 0.1 - 2.0 - sinT * 2.0))) ;
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vec3 colorV2 = mix(color,rgbNormalizer(vec3(178.0,156.0,233.0)), frameV2);
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color += colorV2;
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gl_FragColor = vec4(color,1.0);
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}
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