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in vec4 fragTexCoord;
out vec4 fragOut0;
uniform sampler2D bloomed;
layout (std140) uniform genericData {
float bloom_intensity;
int levels;
};
void main() {
vec4 color_out = vec4(0.0, 0.0, 0.0, 1.0);
float factor = 0.0;
for (int mipmap = 0; mipmap < levels; ++mipmap) {
float scale = 1.0/exp2(float(mipmap));
factor += scale;
color_out.rgb += textureLod(bloomed, fragTexCoord.xy, float(mipmap)).rgb * scale;
}
color_out.rgb /= factor;
color_out.rgb *= bloom_intensity;
fragOut0 = color_out;
}
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