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D3DUSAGE_QUERY

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These options identify query resource types.

#define Description
D3DUSAGE_QUERY_FILTER Query the resource format to see if it supports texture filter types other than D3DTEXF_POINT (which is always supported).
D3DUSAGE_QUERY_LEGACYBUMPMAP Query the resource about a legacy bump map.
D3DUSAGE_QUERY_POSTPIXELSHADER_BLENDING Query the resource to verify support for post pixel shader blending support. If CheckDeviceFormat fails with D3DUSAGE_QUERY_POSTPIXELSHADER_BLENDING, post pixel blending operations are not supported. These include alpha test, pixel fog, render-target blending, color write enable, and dithering.
D3DUSAGE_QUERY_SRGBREAD Query the resource to verify if a texture supports gamma correction during a read operation.
D3DUSAGE_QUERY_SRGBWRITE Query the resource to verify if a texture supports gamma correction during a write operation.
D3DUSAGE_QUERY_VERTEXTEXTURE Query the resource to verify support for vertex shader texture sampling.
D3DUSAGE_QUERY_WRAPANDMIP Query the resource to verify support for texture wrapping and mip-mapping.

 

Use CheckDeviceFormat to query hardware support for these usages, and some other usages listed in D3DUSAGE.

Constant Information

Requirement Value
Header d3d9types.h
Minimum operating system Windows 98

 

Direct3D Constants