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Versions: 21
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Contents
#version 330 core
out vec4 color_out;
#ifdef GL_ES
precision mediump float;
#endif
// http://glslsandbox.com/e#27440.0
uniform float time;
uniform vec2 mouse;
uniform vec2 resolution;
uniform sampler2D backbuffer;
vec3 Hue( float hue )
{
vec3 rgb = fract(hue + vec3(0.0,2.0/3.0,1.0/3.0));
rgb = abs(rgb*2.0-1.0);
return clamp(rgb*3.0-1.0,0.0,1.0);
}
vec4 toRGB( vec4 hsv )
{
return vec4( ((Hue(hsv.x)-1.0)*hsv.y+1.0) * hsv.z, hsv.a);
}
void main( void ) {
vec2 texcoord = vec2(gl_FragCoord.xy/resolution);
vec2 coord = ( gl_FragCoord.xy*2.0 - resolution ) / resolution.y;
vec4 prev =texture(backbuffer,texcoord *vec2(0.5));
vec4 prev1 =texture(backbuffer,texcoord*vec2(0.1));
float x = fract(coord.x*2.0+sin(time+coord.y));
float y = fract(coord.y*2.0+sin(time+coord.x));
y = pow(abs(y-0.5), 2.0)*2.0;
x = pow(abs(x-0.5), 2.0)*2.0;
float h = texcoord.x * texcoord.y;
vec4 color = toRGB(vec4(h,0.5,1.0,1.0));
vec4 s1 =vec4(y+x)*color + (prev*0.2) + (prev1*0.2);
color_out = s1;
}
Version data entries
21 entries across 21 versions & 1 rubygems