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21 lines
426 B
GLSL
21 lines
426 B
GLSL
// vim: set ft=glsl:
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// blue light filter shader
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// values from https://reshade.me/forum/shader-discussion/3673-blue-light-filter-similar-to-f-lux
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precision mediump float;
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varying vec2 v_texcoord;
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uniform sampler2D tex;
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void main() {
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vec4 pixColor = texture2D(tex, v_texcoord);
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// red
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pixColor[0] *= 0.7;
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// green
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pixColor[1] *= 0.6;
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// blue
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pixColor[2] *= 0.5;
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gl_FragColor = pixColor;
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}
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