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23 lines
421 B
GLSL
23 lines
421 B
GLSL
//Simple Scanlines shader
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#ifdef GL_ES
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precision mediump float;
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precision mediump int;
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#endif
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uniform sampler2D sampler0;
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float offset = 1.0;
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float frequency = 170.0;
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varying vec2 v_texcoord0;
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void main()
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{
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float pos0 = (v_texcoord0.y + offset) * frequency;
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float pos1 = cos((fract( pos0 ) - 0.5)*3.14);
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vec4 pel = texture2D( sampler0, v_texcoord0 );
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gl_FragColor = mix(vec4(0,0,0,0), pel, pos1);
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}
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