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D3DHAL_DP2SETVERTEXSHADERCONST structure (d3dhal.h)

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DirectX 8.0 and later versions only.

The D3DHAL_DP2SETVERTEXSHADERCONST structure is used to set one or more of the vertex shader constant registers when the D3DDP2OP_SETVERTEXSHADERCONST opcode is received by D3dDrawPrimitives2.

Syntax

typedef struct _D3DHAL_DP2SETVERTEXSHADERCONST {
  DWORD dwRegister;
  DWORD dwCount;
} D3DHAL_DP2SETVERTEXSHADERCONST;

Members

dwRegister

Specifies the index of the first vertex shader constant to have its value sent.

dwCount

Specifies the number of constant registers to set and, therefore, the number of four element, single precision float vectors to read from the DP2 stream.

Remarks

A start register and register count are given. One or more vectors of four single precision floating-point values immediately follow the D3DHAL_DP2SETVERTEXSHADERCONST data structure in the DP2 stream.

The runtime validates that the range of registers specified is legal given the level of vertex shader support reported to the driver. Furthermore, if the driver does not support any form of programmable vertex processing the runtime does not send this token to the driver.

Requirements

Requirement Value
Header d3dhal.h (include D3dhal.h)

See also

D3DDP2OP_SETVERTEXSHADERCONST

D3DHAL_DP2CREATEVERTEXSHADER

D3DHAL_DP2VERTEXSHADER

D3dDrawPrimitives2