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29 lines
635 B
GLSL
29 lines
635 B
GLSL
// Author @patriciogv - 2015 - patricio.io
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#ifdef GL_ES
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precision mediump float;
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#endif
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const float PI = 3.1415926535897932384626433832795;
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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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mat2 rotate2d(float angle){
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return mat2(cos(angle),-sin(angle),
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sin(angle),cos(angle));
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}
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float stripes(vec2 st){
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st = rotate2d( PI*-0.25 ) * st*10.;
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return step(.5,1.0-smoothstep(.3,1.,abs(sin(st.x*PI))));
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}
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void main(){
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vec2 st = gl_FragCoord.xy/u_resolution.xy;
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st.x *= u_resolution.x/u_resolution.y;
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vec3 color = vec3(stripes(st));
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gl_FragColor = vec4(color, 1.0);
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} |