13 lines
309 B
Plaintext
13 lines
309 B
Plaintext
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uniform highp float saturation; // Between 0 and 2;
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uniform sampler2D SCREEN_TEXTURE;
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void fragment() {
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highp vec4 color = texture(SCREEN_TEXTURE, UV);
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highp float brightness = (color.r + color.g + color.b) / 3.0;
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color.rgb = mix(vec3(brightness), color.rgb, saturation);
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COLOR = color;
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}
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