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The GDI Hardware Acceleration feature provides accelerated core graphics device interface (GDI) operations on a GPU. This feature was introduced in Windows 7.
To indicate that the GPU and the driver support this feature, the kernel-mode display miniport driver (KMD) must set DXGKDDI_INTERFACE_VERSION to >= DXGKDDI_INTERFACE_VERSION_WIN7.
The KMD should also set DXGK_PRESENTATIONCAPS->SupportKernelModeCommandBuffer to TRUE to indicate that it supports GDI Hardware Acceleration command buffer processing. The driver should report this type of support only if the cache-coherent GPU aperture segment exists and there's no significant performance penalty when the CPU accesses GPU memory.
The following reference pages describe how to use this feature:
KMDs that support GDI Hardware Acceleration must implement the following functions:
The following structures are used in the GDI Hardware Acceleration feature:
- D3DKM_TRANSPARENTBLTFLAGS
- D3DKMDT_GDISURFACEDATA
- D3DKMDT_GDISURFACEFLAGS
- DRIVER_INITIALIZATION_DATA
- DXGK_CREATECONTEXTFLAGS
- DXGK_CREATEDEVICEFLAGS
- DXGK_GDIARG_ALPHABLEND
- DXGK_GDIARG_BITBLT
- DXGK_GDIARG_CLEARTYPEBLEND
- DXGK_GDIARG_COLORFILL
- DXGK_GDIARG_STRETCHBLT
- DXGK_GDIARG_TRANSPARENTBLT
- DXGK_RENDERKM_COMMAND
- DXGK_PRESENTATIONCAPS
- DXGKARG_GETSTANDARDALLOCATIONDRIVERDATA
- DXGKARG_RENDER
The following enumerations are used in the GDI Hardware Acceleration feature:
For more details on how to implement GDI Hardware Acceleration in your KMD, see the following articles:
Setting the Size and Pitch of the Memory Allocation
Initialization and DMA Buffer Creation
Reporting Optional Support for Rendering Operations