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Add RoundUpToMultiple and DivideAndRoundUp functions to MathUtils.h (#6989)

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* Add RoundUpToMultiple and DivideAndRoundUp functions to MathUtils.h

Signed-off-by: Tommy Walton <waltont@amazon.com>

* Rename DivideByMultiple2 back to DivideByMultiple, now that I've confirmed it's not in use in the codebase. RHI::DivideByMultiple can be fully deprecated in favor of AZ::DivideAndRoundUp at a later date, once the deprecation strategy has been finalized.

Signed-off-by: Tommy Walton <waltont@amazon.com>

* Update based on PR feedback

Signed-off-by: Tommy Walton <waltont@amazon.com>

* Switched from std::numeric_limits to AZStd::numeric_limits and updated the header to indicate it works for non-power of two alignments, but that SizeAlignUp is more efficient if the alignment is a power of 2

Signed-off-by: Tommy Walton <waltont@amazon.com>

* Added missing arguments to the assert, and a missing namespace and include that failed to compile on non-unity builds

Signed-off-by: Tommy Walton <waltont@amazon.com>
This commit is contained in:
Tommy Walton
2022-02-18 12:29:44 -08:00
committed by GitHub
parent 49dba84fee
commit 7de6bc5b23
16 changed files with 213 additions and 60 deletions
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Gems/Atom/Asset/ImageProcessingAtom/Code/Source/Processing/PixelFormatInfo.cpp
+8 -5
View File
@@ -10,6 +10,8 @@
#include <Processing/PixelFormatInfo.h>
#include <Processing/DDSHeader.h>
#include <AzCore/Math/MathUtils.h>
namespace ImageProcessingAtom
{
CPixelFormats* CPixelFormats::s_instance = nullptr;
@@ -370,11 +372,11 @@ namespace ImageProcessingAtom
{
if (outWidth % pFormatInfo->blockWidth != 0)
{
outWidth = ((outWidth + pFormatInfo->blockWidth - 1) / pFormatInfo->blockWidth) * pFormatInfo->blockWidth;
outWidth = AZ::RoundUpToMultiple(outWidth, pFormatInfo->blockWidth);
}
if (outHeight % pFormatInfo->blockHeight != 0)
{
outHeight = ((outHeight + pFormatInfo->blockHeight - 1) / pFormatInfo->blockHeight) * pFormatInfo->blockHeight;
outHeight = AZ::RoundUpToMultiple(outHeight, pFormatInfo->blockHeight);
}
}
}
@@ -390,10 +392,11 @@ namespace ImageProcessingAtom
return 0;
}
// get number of blocks (ceiling round up for block count) and multiply with bits per block. Divided by 8 to get
// get number of blocks and multiply with bits per block. Divided by 8 to get
// final byte size
return (((imageWidth + pFormatInfo->blockWidth - 1) / pFormatInfo->blockWidth) *
((imageHeight + pFormatInfo->blockHeight - 1) / pFormatInfo->blockHeight) * pFormatInfo->bitsPerBlock) / 8;
return (AZ::DivideAndRoundUp(imageWidth, pFormatInfo->blockWidth) *
AZ::DivideAndRoundUp(imageHeight, pFormatInfo->blockHeight) *
pFormatInfo->bitsPerBlock) / 8;
}
bool CPixelFormats::IsFormatSingleChannel(EPixelFormat fmt)