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32 lines
854 B
GLSL
32 lines
854 B
GLSL
// By Hang Do Thi Duc ( http://22-8miles.com )
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// For Shader Studio Course https://github.com/patriciogonzalezvivo/ss2015
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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 vec2 u_mouse;
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uniform float u_time;
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void main(){
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vec2 st = gl_FragCoord.xy/u_resolution;
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st *= 4.;
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st -= 2.;
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float pct = 0.0;
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// pct = distance(st,vec2(0.4)) + distance(st,vec2(0.6));
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// pct = distance(st,vec2(0.4)) * distance(st,vec2(0.6));
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// pct = max(distance(st,vec2(0.4)),distance(st,vec2(0.6)));
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// pct = pow(distance(st,vec2(0.4)),distance(st,vec2(0.6)));
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vec2 a = vec2(0.4);
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a.x = sin(u_time * 4.);
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a.y = cos(u_time * 2.);
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vec2 b = vec2(0.6);
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pct = min(distance(st, a),distance(st, b)) + distance(st, a);
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pct = 1.-pct;
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vec3 color = vec3(pct);
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gl_FragColor = vec4( color, 1.0 );
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} |