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Add LoadTextureFromTexture function

description

The D3DX11LoadTextureFromTexture can be used to copy from one D3D11 texture to another starting with a specific source/dest box/rect, mip level, array element, num elements. It performs necessary conversions.

DirectXTex can be used to implement something like this using CopyRectangle, but it would be useful and informative to have a more full-featured LoadTextureFromTexture in the DirectXTex library.

comments

walbourn wrote Sep 8, 2013 at 4:12 AM

The signature of the D3DX11 function this would replicate is:

typedef struct _D3DX11_TEXTURE_LOAD_INFO {  D3D11_BOX *pSrcBox;  D3D11_BOX *pDstBox;  UINT      SrcFirstMip;  UINT      DstFirstMip;  UINT      NumMips;  UINT      SrcFirstElement;  UINT      DstFirstElement;  UINT      NumElements;  UINT      Filter;  UINT      MipFilter;} D3DX11_TEXTURE_LOAD_INFO;

walbourn wrote Sep 15, 2013 at 9:59 PM

This would need to handle decompressing / compressing BC blocks as well, although I may limit this to only decompressing.