AuroraMiddleware/D3D12MemoryAllocator
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Fix for BitScan functions in GCC and Clang.

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Code by @medranSolus
This commit is contained in:
Adam Sawicki 2022-02-08 11:16:19 +01:00
parent ae519f2521
commit 9252861098
1 changed files with 5 additions and 5 deletions
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10
src/D3D12MemAlloc.cpp
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@ -299,7 +299,7 @@ static inline UINT8 BitScanLSB(UINT32 mask)
return static_cast<UINT8>(pos);
return UINT8_MAX;
#elif defined __GNUC__ || defined __clang__
return static_cast<UINT8>(__builtin_ffsl(mask)) - 1U;
return static_cast<UINT8>(__builtin_ffs(mask)) - 1U;
#else
UINT8 pos = 0;
UINT32 bit = 1;
@ -322,10 +322,10 @@ static inline UINT8 BitScanMSB(UINT64 mask)
return static_cast<UINT8>(pos);
#elif defined __GNUC__ || defined __clang__
if (mask)
return static_cast<UINT8>(__builtin_clzll(mask));
return 63 - static_cast<UINT8>(__builtin_clzll(mask));
#else
UINT8 pos = 63;
UINT64 bit = 1U << 63;
UINT64 bit = 1ULL << 63;
do
{
if (mask & bit)
@ -345,10 +345,10 @@ static inline UINT8 BitScanMSB(UINT32 mask)
return static_cast<UINT8>(pos);
#elif defined __GNUC__ || defined __clang__
if (mask)
return static_cast<UINT8>(__builtin_clzl(mask));
return 31 - static_cast<UINT8>(__builtin_clz(mask));
#else
UINT8 pos = 31;
UINT32 bit = 1 << 31;
UINT32 bit = 1UL << 31;
do
{
if (mask & bit)