D3DKMT_RENDERFLAGS structure (d3dkmthk.h)

The D3DKMT_RENDERFLAGS structure identifies the type of command buffer to be rendered in a call to the D3DKMTRender function.

Syntax

typedef struct _D3DKMT_RENDERFLAGS {
  UINT ResizeCommandBuffer : 1;
  UINT ResizeAllocationList : 1;
  UINT ResizePatchLocationList : 1;
  UINT NullRendering : 1;
  UINT PresentRedirected : 1;
  UINT RenderKm : 1;
  UINT RenderKmReadback : 1;
  UINT Reserved : 25;
} D3DKMT_RENDERFLAGS;

Members

ResizeCommandBuffer

A UINT value that specifies whether to resize the command buffer. The driver puts the requested size in the NewCommandBufferSize member of the D3DKMT_RENDER structure. Because a resize request by the driver might not be possible, the driver must always verify the size value that is returned.

Setting this member is equivalent to setting the first bit of a 32-bit value (0x00000001).

ResizeAllocationList

A UINT value that specifies whether to resize the allocation list. The driver puts the requested number of elements in the NewAllocationListSize member of the D3DKMT_RENDER structure. Because a resize request by the driver might not be possible, the driver must always verify the size value that is returned.

Setting this member is equivalent to setting the second bit of a 32-bit value (0x00000002).

ResizePatchLocationList

A UINT value that specifies whether to resize the patch-location list. The driver puts the requested number of elements in the NewPatchLocationListSize member of the D3DKMT_RENDER structure. Because a resize request by the driver might not be possible, the driver must always verify the size value that is returned.

Setting this member is equivalent to setting the third bit of a 32-bit value (0x00000004).

NullRendering

A UINT value that specifies whether the graphics processing unit (GPU) should process any commands for the rendering context. The NullRendering bit-field flag is set to inform the GPU not to process any commands for the rendering context. The NullRendering bit-field flag is set only during performance investigating and debugging to simulate an infinitely fast rendering engine that still must perform the overhead of DMA buffer submission and signaling. NullRendering is never set during typical operations.

Setting this member is equivalent to setting the fourth bit of the 32-bit Value member (0x00000008).

PresentRedirected

A UINT value that specifies whether to redirect the present command. The command contains a completion of one frame even though the command was completed in the OpenGl ICD.

Setting this member is equivalent to setting the fifth bit of a 32-bit value (0x00000010).

RenderKm

Supported in Windows 7 and later versions.

A UINT value that specifies whether the OpenGL ICD supplies a pointer to the command buffer to be rendered in the ICD's call to the D3DKMTRender function. If this flag is set, the runtime does not call the display miniport driver's DxgkDdiRender function. If this flag is set, the runtime calls the display miniport driver's DxgkDdiRenderKm function.

Setting this member is equivalent to setting the sixth bit of a 32-bit value (0x00000020).

RenderKmReadback

Reserved

This member is reserved and should be set to zero. Setting this member is equivalent to setting the remaining 26 bits (0xFFFFFFC0) of a 32-bit value to zeros.

Requirements

See also

D3DKMT_RENDER