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 IDirect3D9::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. |
