source: trunk/src/opengl/util/composition_mode_lighten.glsl@ 769

Last change on this file since 769 was 561, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.1 sources.

File size: 316 bytes
Line 
1// Dca' = max(Sca.Da, Dca.Sa) + Sca.(1 - Da) + Dca.(1 - Sa)
2// Da' = Sa + Da - Sa.Da
3vec4 composite(vec4 src, vec4 dst)
4{
5 vec4 result;
6 result.rgb = max(src.rgb * dst.a, dst.rgb * src.a) + src.rgb * (1.0 - dst.a) + dst.rgb * (1.0 - src.a);
7 result.a = src.a + dst.a - src.a * dst.a;
8 return result;
9}
Note: See TracBrowser for help on using the repository browser.