mirror of https://github.com/axmolengine/axmol.git
34 lines
867 B
GLSL
34 lines
867 B
GLSL
// Shader taken from: http://webglsamples.googlecode.com/hg/electricflower/electricflower.html
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#ifdef GL_ES
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precision mediump float;
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#endif
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varying vec4 v_fragmentColor;
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varying vec2 v_texCoord;
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uniform vec2 resolution;
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uniform sampler2D u_tex0;
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uniform vec4 u_Time;
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uniform vec2 u_screenSize;
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const float intensity = 0.05;
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vec3 noise(vec2 uv)
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{
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vec2 p = abs(sin(uv * 13.0 + uv.x * u_Time[1] * sin(uv.y)));
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return vec3(sin (0.2 * u_Time[1] + sin(p * 0.5) * u_Time[1] / cos(50.0)) * 10.0,0.3+0.5 * abs(sin(u_Time[1] * tan(5.0))));
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}
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void main(void)
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{
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#ifdef METAL
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vec2 fragCoord = vec2(gl_FragCoord.x, u_screenSize.y - gl_FragCoord.y);
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#else
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vec2 fragCoord = gl_FragCoord.xy;
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#endif
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gl_FragColor.xyz = intensity * noise(fragCoord / sin(resolution.xy * u_Time[1] * 0.01)) + (1. - intensity) *
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texture2D(u_tex0,v_texCoord.xy).xyz;
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gl_FragColor.w = 1.;
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} |