// d3dukmdt.h

typedef enum _D3DDDI_TESTCOMMANDBUFFEROP {
  D3DDDI_TESTCOMMANDBUFFEROP_INVALID = 0,
  D3DDDI_TESTCOMMANDBUFFEROP_COPY = 1,
  D3DDDI_TESTCOMMANDBUFFEROP_FILL = 2,
  D3DDDI_TESTCOMMANDBUFFEROP_INFINITE_LOOP = 3,
  D3DDDI_TESTCOMMANDBUFFEROP_INFINITE_PREEMPTABLE_LOOP = 4,
  D3DDDI_TESTCOMMANDBUFFEROP_MAX
} D3DDDI_TESTCOMMANDBUFFEROP;
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Windows Driver Kit DDI reference (ne-d3dukmdt-d3dddi_testcommandbufferop)

Description

A D3DDDI_TESTCOMMANDBUFFEROP enumeration specifies the type of operation for a test command buffer.

Constants

`D3DDDI_TESTCOMMANDBUFFEROP_INVALID:0`

The operation is invalid or not specified.

`D3DDDI_TESTCOMMANDBUFFEROP_COPY:1`

The command buffer operation is a copy operation.

`D3DDDI_TESTCOMMANDBUFFEROP_FILL:2`

The command buffer operation is a fill operation.

`D3DDDI_TESTCOMMANDBUFFEROP_INFINITE_LOOP:3`

The command is used to simulate a hung engine. The generated infinite loop must be not preemptable.

`D3DDDI_TESTCOMMANDBUFFEROP_INFINITE_PREEMPTABLE_LOOP:4`

The command is used to test preemption of a long running command. The generated infinite loop must be preemptable.

`D3DDDI_TESTCOMMANDBUFFEROP_MAX`

Maximum value for this enumeration.

Remarks

For more information, see Kernel-mode testing.

D3DDDI_TESTCOMMANDBUFFEROP - NtDoc