[Impeller] Do SourceOver alpha compositing for advanced blends; write results to the pass with kSource #36658
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bdero
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Verified that this doesn't regress gskinnerTeam/flutter-wonderous-app#34.
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zanderso
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Oct 7, 2022
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| frag_color = vec4(blended, 1) * src.a * dst.a; | ||
| frag_color = mix(dst_sample, blended, src.a); | ||
| //frag_color = dst_sample; |
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You'll need to pull latest to get the framework tests to compile |
jonahwilliams
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Oct 7, 2022
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…nds; write results to the pass with kSource (flutter/engine#36658)
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Fixes flutter/flutter#110672.
This fixes the major issue found in #36656:
Jonah's test app (left is Skia, right is Impeller):
2 remaining issues: