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HostFeatures: Fix insufficient documentation to reproduce 3DNow! bug

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This ensures we don't forget about it if bug diagnosis leads nowhere.
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Tony Wasserka authored and Tony Wasserka committed 2025-08-12 15:55:45 +02:00
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commit 2c3a4fef26
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Source/Common/HostFeatures.cpp
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@@ -499,8 +499,9 @@ FEXCore::HostFeatures FetchHostFeatures(FEX::CPUFeatures& Features, bool Support
HostFeatures.SupportsAVX = true;
#ifdef _WIN32
// Disable 3DNow! by default to better match the set of extensions exposed on modern CPUs
// Works around a bug breaking some uses of 3DNow in WOW64 FEX
// Disable 3DNow! by default to better match the set of extensions exposed on modern CPUs.
// This works around a bug that manifests in some games using native d3dx9 DLLs (most easily reproduced in WoW64 builds).
// For example, Fallout: New Vegas and some old EA games will run with a blackscreen.
HostFeatures.Supports3DNow = false;
#else
HostFeatures.Supports3DNow = true;