URL: http://glslsandbox.com/e#21762.0
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// Simple Ripple // By: Brandon Fogerty // bfogerty at gmail dot com // Special Thanks Codea // xdpixel.com #ifdef GL_ES precision mediump float; #endif uniform float time; uniform vec2 resolution; void main( void ) { vec2 position = ( gl_FragCoord.xy / resolution.xy ) * 2.0 - 1.0; position.x *= (resolution.x / resolution.y); float len = length( position ); float freq = 200.0; vec2 v2 = ( position / len ) * freq * sin( time*4.0 - len*15.0 )*0.05; gl_FragColor = vec4( v2.x, v2.y, 0.0, 1.0 ); } |