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D3DXLoadSurfaceFromFileInMemory function

Loads a surface from a file in memory.

Syntax


HRESULT D3DXLoadSurfaceFromFileInMemory(
  _In_     LPDIRECT3DSURFACE9 pDestSurface,
  _In_     const PALETTEENTRY *pDestPalette,
  _In_     const RECT *pDestRect,
  _In_     LPCVOID pSrcData,
  _In_     UINT SrcData,
  _In_     const RECT *pSrcRect,
  _In_     DWORD Filter,
  _In_     D3DCOLOR ColorKey,
  _Inout_  D3DXIMAGE_INFO *pSrcInfo
);

Parameters

pDestSurface [in]

Type: LPDIRECT3DSURFACE9

Pointer to an IDirect3DSurface9 interface. Specifies the destination surface, which receives the image.

pDestPalette [in]

Type: const PALETTEENTRY*

Pointer to a PALETTEENTRY structure, the destination palette of 256 colors or NULL.

pDestRect [in]

Type: const RECT*

Pointer to a RECT structure. Specifies the destination rectangle. Set this parameter to NULL to specify the entire surface.

pSrcData [in]

Type: LPCVOID

Pointer to the file in memory from which to load the surface.

SrcData [in]

Type: UINT

Size of the file in memory, in bytes.

pSrcRect [in]

Type: const RECT*

Pointer to a RECT structure. Specifies the source rectangle. Set this parameter to NULL to specify the entire image.

Filter [in]

Type: DWORD

A combination of one or more D3DX_FILTER controlling how the image is filtered. Specifying D3DX_DEFAULT for this parameter is the equivalent of specifying D3DX_FILTER_TRIANGLE | D3DX_FILTER_DITHER.

ColorKey [in]

Type: D3DCOLOR

D3DCOLOR value to replace with transparent black, or 0 to disable the colorkey. This is always a 32-bit ARGB color, independent of the source image format. Alpha is significant and should usually be set to FF for opaque color keys. Thus, for opaque black, the value would be equal to 0xFF000000.

pSrcInfo [in, out]

Type: D3DXIMAGE_INFO*

Pointer to a D3DXIMAGE_INFO structure to be filled with a description of the data in the source image file or NULL.

Return value

Type: HRESULT

If the function succeeds, the return value is D3D_OK. If the function fails, the return value can be one of the following: D3DERR_INVALIDCALL, D3DXERR_INVALIDDATA.

Remarks

This function handles conversion to and from compressed texture formats and supports the following file formats: .bmp, .dds, .dib, .hdr, .jpg, .pfm, .png, .ppm, and .tga. See D3DXIMAGE_FILEFORMAT.

Writing to a non-level-zero surface will not cause the dirty rectangle to be updated. If D3DXLoadSurfaceFromFileInMemory is called and the surface was not already dirty (this is unlikely under normal usage scenarios), the application needs to explicitly call AddDirtyRect on the surface.

Requirements

Header

D3dx9tex.h

Library

D3dx9.lib

See also

Texture Functions in D3DX 9

 

 

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