mirror of https://github.com/mgba-emu/mgba.git
43 lines
1.2 KiB
Forth
43 lines
1.2 KiB
Forth
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varying vec2 texCoord;
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uniform sampler2D tex;
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uniform vec2 texSize;
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uniform float darken_screen;
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uniform float target_gamma;
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uniform float display_gamma;
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uniform float sat;
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uniform float lum;
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uniform float contrast;
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uniform float blr;
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uniform float blg;
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uniform float blb;
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uniform float r;
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uniform float g;
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uniform float b;
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uniform float rg;
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uniform float rb;
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uniform float gr;
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uniform float gb;
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uniform float br;
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uniform float bg;
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void main() {
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vec4 screen = pow(texture2D(tex, texCoord), vec4(target_gamma + darken_screen)).rgba;
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vec4 avglum = vec4(0.5);
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screen = mix(screen, avglum, (1.0 - contrast));
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mat4 color = mat4(r, rg, rb, 0.0,
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gr, g, gb, 0.0,
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br, bg, b, 0.0,
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blr, blg, blb, 1.0);
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mat4 adjust = mat4((1.0 - sat) * 0.3086 + sat, (1.0 - sat) * 0.3086, (1.0 - sat) * 0.3086, 1.0,
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(1.0 - sat) * 0.6094, (1.0 - sat) * 0.6094 + sat, (1.0 - sat) * 0.6094, 1.0,
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(1.0 - sat) * 0.0820, (1.0 - sat) * 0.0820, (1.0 - sat) * 0.0820 + sat, 1.0,
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0.0, 0.0, 0.0, 1.0);
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color *= adjust;
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screen = clamp(screen * lum, 0.0, 1.0);
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screen = color * screen;
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gl_FragColor = pow(screen, vec4(1.0 / display_gamma + (darken_screen / 8.)));
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}
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