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TextureCache: Use XXH3 instead of the quick hash for texture data

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With xxhash 0.8.4, XXH3 is faster than StableQuickTexHash on ARM64
(about 37 vs 24 GB/s on a Snapdragon X), and its scalar path, which
RISC-V builds get, is about as fast as the quick hash's. It doesn't
collide the way the quick hash does (#8249).

Texture replacement still uses its own hash setting, so texture packs
are unaffected.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>
This commit is contained in:
Henrik RydgårdandClaude Opus 5.5 committed 2026-09-29 13:10:28 -06:00
1 parent 21ee60a8ab
commit 7de7b2d76b
1 file changed
+3 -2
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GPU/Common/TextureCacheCommon.cpp
+3 -2
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@@ -431,8 +431,9 @@ static u32 ComputeTextureHash(TextureReplacer &replacer, u32 addr, int bufw, int
if (Memory::IsValidRange(addr, sizeInRAM)) {
gpuStats.perFrame.numTextureDataBytesHashed += sizeInRAM;
// return XXH64(checkp, sizeInRAM, 0xBACD7814);
return StableQuickTexHash(checkp, sizeInRAM);
// XXH3 is faster than StableQuickTexHash on ARM64 and doesn't collide the way it did (#8249).
// Texture replacement keeps its own hash setting above, so this doesn't affect texture packs.
return (u32)XXH3_64bits(checkp, sizeInRAM);
} else {
return 0;
}