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Latte: Optimize uniform register array size for known shaders

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This commit is contained in:
Exzap 2024-02-19 12:07:03 +01:00
parent 96bbd3bd25
commit 72ce4838ea
4 changed files with 15 additions and 11 deletions
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18
src/Cafe/HW/Latte/LegacyShaderDecompiler/LatteDecompilerInternal.h
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@ -157,19 +157,23 @@ struct LatteDecompilerBufferAccessTracker
}
}
sint32 DetermineSize(sint32 maximumSize) const
sint32 DetermineSize(uint64 shaderBaseHash, sint32 maximumSize) const
{
// here we try to predict the accessed range so we dont have to upload the whole buffer
// potential risky optimization: assume that if there is a fixed-index access on an index higher than any other non-zero relative accesses, it bounds the prior relative access
// here we try to predict the accessed byte range so we dont have to upload the whole buffer
// if no bound can be determined then return maximumSize
// for some known shaders we use hand-tuned values instead of the maximumSize fallback value that those shaders would normally use
if(shaderBaseHash == 0x8ff56afdf1a2f837) // XCX text rendering
return 24;
if(shaderBaseHash == 0x37b9100c1310d3bb) // BotW UI backdrops 1
return 24;
if(shaderBaseHash == 0xf7ba548c1fefe24a) // BotW UI backdrops 2
return 30;
sint32 highestAccessIndex = -1;
if(hasStaticIndexAccess)
{
highestAccessIndex = highestAccessStaticIndex;
}
if(hasDynamicIndexAccess)
{
return maximumSize; // dynamic index exists and no bound can be determined
}
if (highestAccessIndex < 0)
return 1; // no access at all? But avoid zero as a size
return highestAccessIndex + 1;