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28 lines
631 B
GLSL
28 lines
631 B
GLSL
#ifndef BasicBloomCommon_GLSL
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#define BasicBloomCommon_GLSL
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/*
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** Physical based render code, develop by engineer: qiutanguu.
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*/
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#extension GL_GOOGLE_include_directive : enable
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#define MIX_BLOOM_UPSCALE 1
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#define MIX_BLOOM_OUTPUT 0
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vec3 prefilter(vec3 c, vec4 prefilterFactor)
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{
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float brightness = max(c.r, max(c.g, c.b));
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float soft = brightness - prefilterFactor.y;
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soft = clamp(soft, 0, prefilterFactor.z);
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soft = soft * soft * prefilterFactor.w;
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float contribution = max(soft, brightness - prefilterFactor.x);
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contribution /= max(brightness, 0.00001);
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return c * contribution;
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}
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#endif |