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BlendState: Use masking as a fastpath for the logic op NO_OP.

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This commit is contained in:
degasus 2016-12-29 18:15:41 +01:00
parent 23b0faeba5
commit f6c7a258ed
1 changed files with 14 additions and 5 deletions
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19
Source/Core/VideoCommon/RenderState.cpp
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@ -108,12 +108,21 @@ void BlendingState::Generate(const BPMemory& bp)
// The logicop bit has the lowest priority
else if (bp.blendmode.logicopenable)
{
logicopenable = true;
logicmode = bp.blendmode.logicmode;
if (dstalpha)
if (bp.blendmode.logicmode == BlendMode::NOOP)
{
// TODO: Not supported by backends.
// Fast path for Kirby's Return to Dreamland, they use it with dstAlpha.
colorupdate = false;
alphaupdate = alphaupdate && dstalpha;
}
else
{
logicopenable = true;
logicmode = bp.blendmode.logicmode;
if (dstalpha)
{
// TODO: Not supported by backends.
}
}
}
}