44 lines
1.0 KiB
GLSL
44 lines
1.0 KiB
GLSL
#version 100
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precision mediump float;
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// Input vertex attributes (from vertex shader)
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varying vec2 fragTexCoord;
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varying vec4 fragColor;
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// Input uniform values
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uniform sampler2D texture0;
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uniform vec4 colDiffuse;
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// NOTE: Add here your custom variables
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float offset = 0;
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float frequency = 720/3.0;
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uniform float time;
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void main()
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{
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/*
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// Scanlines method 1
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float tval = 0; //time
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vec2 uv = 0.5 + (fragTexCoord - 0.5)*(0.9 + 0.01*sin(0.5*tval));
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vec4 color = texture2D(texture0, fragTexCoord);
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color = clamp(color*0.5 + 0.5*color*color*1.2, 0.0, 1.0);
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color *= 0.5 + 0.5*16.0*uv.x*uv.y*(1.0 - uv.x)*(1.0 - uv.y);
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color *= vec4(0.8, 1.0, 0.7, 1);
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color *= 0.9 + 0.1*sin(10.0*tval + uv.y*1000.0);
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color *= 0.97 + 0.03*sin(110.0*tval);
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fragColor = color;
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*/
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// Scanlines method 2
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float globalPos = (fragTexCoord.y + offset) * frequency;
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float wavePos = cos((fract(globalPos) - 0.5)*3.14);
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vec4 color = texture2D(texture0, fragTexCoord);
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gl_FragColor = mix(vec4(0, 0.3, 0, 0), color, wavePos);
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} |