dolphin/Data/User/Shaders/fire2.txt

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uniform sampler2D samp9;
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out vec4 ocol0;
in vec2 uv0;
void main()
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{
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vec4 c0 = texture(samp9, uv0);
float red = 0.0;
float green = 0.0;
float blue = 0.0;
float avg = (c0.r + c0.g + c0.b) / 3;
red = c0.r + (c0.g / 2) + (c0.b / 3);
green = c0.r / 3;
ocol0 = vec4(red, green, blue, 1.0);
}