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in vec4 fragTexCoord;
out vec4 fragOut0;
uniform sampler2D tex;
const float Luminance = 0.08;
const float fMiddleGray = 0.2;
const float fWhiteCutoff = 0.4;
const float threshold = 1.0;
// High-pass filter
float luminance(vec3 color)
{
return dot(color, vec3(0.299, 0.587, 0.114));
}
void main() {
vec4 ColorOut = texture(tex, fragTexCoord.xy);
//ColorOut *= fMiddleGray / (Luminance + 0.001);
//ColorOut *= (1.0 + (ColorOut / (fWhiteCutoff * fWhiteCutoff)));
//ColorOut -= 6.0;
//ColorOut /= (10.0 + ColorOut);
fragOut0 = vec4(max(vec3(0.0, 0.0, 0.0), ColorOut.rgb - vec3(1.0, 1.0, 1.0)), 1.0);
//float luminance = luminance(ColorOut.rgb);
//gl_FragColor.rgb = luminance > threshold ? ColorOut.rgb : vec3(0.0);
}
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