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Improvement in VmaAlignUp, VmaAlignDown

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This commit is contained in:
Adam Sawicki 2020-07-06 17:39:20 +02:00
parent 376ada32fc
commit 7cb859d3a0
1 changed files with 24 additions and 22 deletions
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46
src/vk_mem_alloc.h
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@ -4243,28 +4243,6 @@ static inline uint32_t VmaCountBitsSet(uint32_t v)
return c;
}
// Aligns given value up to nearest multiply of align value. For example: VmaAlignUp(11, 8) = 16.
// Use types like uint32_t, uint64_t as T.
template <typename T>
static inline T VmaAlignUp(T val, T align)
{
return (val + align - 1) / align * align;
}
// Aligns given value down to nearest multiply of align value. For example: VmaAlignUp(11, 8) = 8.
// Use types like uint32_t, uint64_t as T.
template <typename T>
static inline T VmaAlignDown(T val, T align)
{
return val / align * align;
}
// Division with mathematical rounding to nearest number.
template <typename T>
static inline T VmaRoundDiv(T x, T y)
{
return (x + (y / (T)2)) / y;
}
/*
Returns true if given number is a power of two.
T must be unsigned integer number or signed integer but always nonnegative.
@ -4276,6 +4254,30 @@ inline bool VmaIsPow2(T x)
return (x & (x-1)) == 0;
}
// Aligns given value up to nearest multiply of align value. For example: VmaAlignUp(11, 8) = 16.
// Use types like uint32_t, uint64_t as T.
template <typename T>
static inline T VmaAlignUp(T val, T alignment)
{
VMA_HEAVY_ASSERT(VmaIsPow2(alignment));
return (val + alignment - 1) & ~(alignment - 1);
}
// Aligns given value down to nearest multiply of align value. For example: VmaAlignUp(11, 8) = 8.
// Use types like uint32_t, uint64_t as T.
template <typename T>
static inline T VmaAlignDown(T val, T alignment)
{
VMA_HEAVY_ASSERT(VmaIsPow2(alignment));
return val & ~(alignment - 1);
}
// Division with mathematical rounding to nearest number.
template <typename T>
static inline T VmaRoundDiv(T x, T y)
{
return (x + (y / (T)2)) / y;
}
// Returns smallest power of 2 greater or equal to v.
static inline uint32_t VmaNextPow2(uint32_t v)
{