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Last change
on this file since 82 was 2, checked in by Dmitry A. Kuminov, 16 years ago |
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Initially imported qt-all-opensource-src-4.5.1 from Trolltech.
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File size:
280 bytes
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| 1 | // Dca' = Sca.Dca + Sca.(1 - Da) + Dca.(1 - Sa)
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| 2 | // Da' = Sa + Da - Sa.Da
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| 3 | vec4 composite(vec4 src, vec4 dst)
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| 4 | {
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| 5 | vec4 result;
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| 6 | result.rgb = src.rgb * dst.rgb + src.rgb * (1 - dst.a) + dst.rgb * (1 - src.a);
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| 7 | result.a = src.a + dst.a - src.a * dst.a;
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| 8 | return result;
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| 9 | }
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