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D3D12: Fix readback src pitch calculation (#2278)

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This commit is contained in:
pezcode
2020-10-09 01:47:29 +02:00
committed by GitHub
parent e878147cf9
commit 3142be44a5
1 changed files with 7 additions and 6 deletions
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13
src/renderer_d3d12.cpp
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@@ -1642,17 +1642,18 @@ namespace bgfx { namespace d3d12
D3D12_PLACED_SUBRESOURCE_FOOTPRINT layout;
uint32_t numRows;
uint64_t total;
uint64_t srcPitch;
m_device->GetCopyableFootprints(&desc
, _mip
, 1
, 0
, &layout
, &numRows
, &srcPitch
, NULL
, &total
);
uint32_t srcPitch = layout.Footprint.RowPitch;
ID3D12Resource* readback = createCommittedResource(m_device, HeapProperty::ReadBack, total);
D3D12_BOX box;
@@ -1678,10 +1679,9 @@ namespace bgfx { namespace d3d12
uint8_t* dst = (uint8_t*)_data;
uint32_t dstPitch = srcWidth*bpp/8;
uint32_t pitch = bx::uint32_min(uint32_t(srcPitch), dstPitch);
uint32_t pitch = bx::uint32_min(srcPitch, dstPitch);
D3D12_RANGE readRange = { 0, dstPitch*srcHeight };
readback->Map(0, &readRange, (void**)&src);
readback->Map(0, NULL, (void**)&src);
for (uint32_t yy = 0, height = srcHeight; yy < height; ++yy)
{
@@ -1878,7 +1878,8 @@ namespace bgfx { namespace d3d12
, (uint32_t)total
, false
);
readback->Unmap(0, NULL);
D3D12_RANGE writeRange = { 0, 0 };
readback->Unmap(0, &writeRange);
DX_RELEASE(readback, 0);
}