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Add kTextureRowPitchAlignment and Align helper

This commit is contained in:
Austin Eng 2017-07-14 10:58:50 -04:00 committed by Austin Eng
parent 8867e5d8df
commit 98b781527f
3 changed files with 8 additions and 0 deletions
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1
src/common/Constants.h
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@ -24,5 +24,6 @@ static constexpr uint32_t kMaxVertexAttributes = 16u;
static constexpr uint32_t kMaxVertexInputs = 16u; static constexpr uint32_t kMaxVertexInputs = 16u;
static constexpr uint32_t kNumStages = 3; static constexpr uint32_t kNumStages = 3;
static constexpr uint32_t kMaxColorAttachments = 4u; static constexpr uint32_t kMaxColorAttachments = 4u;
static constexpr uint32_t kTextureRowPitchAlignment = 256u;
#endif // COMMON_CONSTANTS_H_ #endif // COMMON_CONSTANTS_H_

6
src/common/Math.cpp
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@ -60,3 +60,9 @@ void* AlignVoidPtr(void* ptr, size_t alignment) {
ASSERT(alignment != 0); ASSERT(alignment != 0);
return reinterpret_cast<void*>((reinterpret_cast<intptr_t>(ptr) + (alignment - 1)) & ~(alignment - 1)); return reinterpret_cast<void*>((reinterpret_cast<intptr_t>(ptr) + (alignment - 1)) & ~(alignment - 1));
} }
uint32_t Align(uint32_t value, size_t alignment) {
ASSERT(IsPowerOfTwo(alignment));
ASSERT(alignment != 0);
return (value + (alignment - 1)) & ~(alignment - 1);
}

1
src/common/Math.h
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@ -25,6 +25,7 @@ bool IsPowerOfTwo(size_t n);
bool IsAligned(const void* ptr, size_t alignment); bool IsAligned(const void* ptr, size_t alignment);
void* AlignVoidPtr(void* ptr, size_t alignment); void* AlignVoidPtr(void* ptr, size_t alignment);
uint32_t Align(uint32_t value, size_t alignment);
template<typename T> template<typename T>
T* AlignPtr(T* ptr, size_t alignment) { T* AlignPtr(T* ptr, size_t alignment) {