Revision 90eb5f53
Added by Leszek Koltunski almost 6 years ago
| src/main/res/raw/oit_render_fragment_shader.glsl | ||
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} |
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////////////////////////////////////////////////////////////////////////////////////////////// |
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// https://en.wikipedia.org/wiki/Alpha_compositing (premultiplied)
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// A over B (https://en.wikipedia.org/wiki/Alpha_compositing)
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vec4 blend(vec4 clr,vec4 srf) |
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vec4 blend(vec4 A,vec4 B) |
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{
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return clr + (1.0 - clr.a) * vec4(srf.rgb * srf.a , srf.a); |
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float b = B.a * (1.0-A.a); |
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float a = A.a + b; |
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return vec4( (A.rgb*A.a + B.rgb*b)/a , a ); |
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} |
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////////////////////////////////////////////////////////////////////////////////////////////// |
Also available in: Unified diff
OIT: correction for blending in Pass4