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Fix for VmaBitScan functions in GCC and Clang. Fixed debug margin for generic algorithm.

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Hopefully helps for #231.
Code by @medranSolus
This commit is contained in:
Adam Sawicki 2022-02-08 10:50:10 +01:00
parent ed2a72153e
commit bb29254253
2 changed files with 40 additions and 6 deletions
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13
include/vk_mem_alloc.h
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@ -3108,7 +3108,7 @@ static inline uint8_t VmaBitScanLSB(uint32_t mask)
return static_cast<uint8_t>(pos);
return UINT8_MAX;
#elif defined __GNUC__ || defined __clang__
return static_cast<uint8_t>(__builtin_ffsl(mask)) - 1U;
return static_cast<uint8_t>(__builtin_ffs(mask)) - 1U;
#else
uint8_t pos = 0;
uint32_t bit = 1;
@ -3130,10 +3130,10 @@ static inline uint8_t VmaBitScanMSB(uint64_t mask)
return static_cast<uint8_t>(pos);
#elif defined __GNUC__ || defined __clang__
if (mask)
return static_cast<uint8_t>(__builtin_clzll(mask));
return 63 - static_cast<uint8_t>(__builtin_clzll(mask));
#else
uint8_t pos = 63;
uint64_t bit = 1u << 63;
uint64_t bit = 1ULL << 63;
do
{
if (mask & bit)
@ -3152,10 +3152,10 @@ static inline uint8_t VmaBitScanMSB(uint32_t mask)
return static_cast<uint8_t>(pos);
#elif defined __GNUC__ || defined __clang__
if (mask)
return static_cast<uint8_t>(__builtin_clzl(mask));
return 31 - static_cast<uint8_t>(__builtin_clz(mask));
#else
uint8_t pos = 31;
uint32_t bit = 1 << 31;
uint32_t bit = 1UL << 31;
do
{
if (mask & bit)
@ -6961,7 +6961,7 @@ bool VmaBlockMetadata_Generic::CheckAllocation(
}
// Start from offset equal to beginning of this suballocation.
VkDeviceSize offset = suballoc.offset;
VkDeviceSize offset = suballoc.offset + (suballocItem == m_Suballocations.cbegin() ? 0 : GetDebugMargin());
// Apply debugMargin from the end of previous alloc.
if (debugMargin > 0)
@ -10341,6 +10341,7 @@ void VmaBlockMetadata_TLSF::InsertFreeBlock(Block* block)
uint8_t memClass = SizeToMemoryClass(block->size);
uint16_t secondIndex = SizeToSecondIndex(block->size, memClass);
uint32_t index = GetListIndex(memClass, secondIndex);
VMA_ASSERT(index < m_ListsCount);
block->PrevFree() = VMA_NULL;
block->NextFree() = m_FreeList[index];
m_FreeList[index] = block;