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https://github.com/Abdess/retroarch_system.git
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31 lines
729 B
GLSL
31 lines
729 B
GLSL
// Advanced Scanlines (CRT) shader, created to use in PPSSPP.
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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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in vec2 r_texcoord;
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out vec4 o_color;
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void main()
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{
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vec4 u_setting;
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u_setting.xy = vec2(1.0, 0.5);
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float pos0 = ((r_texcoord.y + 1.0) * 170.0*u_setting.x);
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float pos1 = cos((fract( pos0 ) - 0.5)*3.1415926*u_setting.y)*1.5;
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vec4 rgb = texture( sampler0, r_texcoord );
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// slight contrast curve
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vec4 color = rgb*0.5+0.5*rgb*rgb*1.2;
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// color tint
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color *= vec4(0.9,1.0,0.7, 0.0);
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// vignette
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color *= 1.1 - 0.6 * (dot(r_texcoord - 0.5, r_texcoord - 0.5) * 2.0);
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o_color = mix(vec4(0,0,0,0), color, pos1);
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} |