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Remove a workaround of buffer size computation 

If we are copying a partial of rows, the buffer size doesn't need
to be that large of the entire image which has "rowsPerImage" rows.
There was a bug in texture copy splitter. And this workaround was
introduced at https://dawn-review.googlesource.com/c/dawn/+/30741
in order to workaround that bug. D3D12 validation is actually correct.

Now that we have fixed the bug at
https://dawn-review.googlesource.com/c/dawn/+/52680/. The workaround
is not needed.

Bug: dawn:547, dawn:520

Change-Id: I92292c71dc5479fc2ba863eb9f897516bd1a96a0
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/53360
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Yunchao He <yunchao.he@intel.com>
This commit is contained in:
Yunchao He 2021-06-04 20:21:16 +00:00 committed by Dawn LUCI CQ
parent 2b43b45af9
commit 539fc31de3
1 changed files with 4 additions and 12 deletions
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16
src/utils/TestUtils.cpp
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@ -52,19 +52,11 @@ namespace utils {
}
layout.rowsPerImage = rowsPerImage;
layout.bytesPerImage = layout.bytesPerRow * rowsPerImage;
uint32_t appliedRowsPerImage = rowsPerImage > 0 ? rowsPerImage : layout.mipSize.height;
layout.bytesPerImage = layout.bytesPerRow * appliedRowsPerImage;
// TODO(kainino@chromium.org): Remove this intermediate variable.
// It is currently needed because of an issue in the D3D12 copy splitter
// (or maybe in D3D12 itself?) which requires there to be enough room in the
// buffer for the last image to have a height of `rowsPerImage` instead of
// the actual height.
wgpu::Extent3D mipSizeWithHeightWorkaround = layout.mipSize;
mipSizeWithHeightWorkaround.height =
rowsPerImage * utils::GetTextureFormatBlockHeight(format);
layout.byteLength = RequiredBytesInCopy(layout.bytesPerRow, rowsPerImage,
mipSizeWithHeightWorkaround, format);
layout.byteLength =
RequiredBytesInCopy(layout.bytesPerRow, appliedRowsPerImage, layout.mipSize, format);
const uint32_t bytesPerTexel = utils::GetTexelBlockSizeInBytes(format);
layout.texelBlocksPerRow = layout.bytesPerRow / bytesPerTexel;