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internal/graphicsdriver/directx: bug fix: had to consider strides when copying resources

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Closes #2617
This commit is contained in:
Hajime Hoshi 2023-03-29 18:23:16 +09:00
parent 0449126c5b
commit 0b0526a05b
1 changed files with 11 additions and 1 deletions
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12
internal/graphicsdriver/directx/image11_windows.go
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@ -113,7 +113,17 @@ func (i *image11) ReadPixels(buf []byte, x, y, width, height int) error {
if err := i.graphics.deviceContext.Map(unsafe.Pointer(staging), 0, _D3D11_MAP_READ, 0, &mapped); err != nil { if err := i.graphics.deviceContext.Map(unsafe.Pointer(staging), 0, _D3D11_MAP_READ, 0, &mapped); err != nil {
return err return err
} }
copy(buf, unsafe.Slice((*byte)(mapped.pData), 4*width*height))
stride := int(mapped.RowPitch)
src := unsafe.Slice((*byte)(mapped.pData), stride*height)
if mapped.RowPitch == uint32(4*width) {
copy(buf, src)
} else {
for j := 0; j < height; j++ {
copy(buf[j*4*width:(j+1)*4*width], src[j*stride:j*stride+4*width])
}
}
i.graphics.deviceContext.Unmap(unsafe.Pointer(staging), 0) i.graphics.deviceContext.Unmap(unsafe.Pointer(staging), 0)
return nil return nil