IDirect3DDevice9::SetVertexShaderConstantF method (d3d9helper.h)

Sets a floating-point vertex shader constant.

Syntax

HRESULT SetVertexShaderConstantF(
  [in] UINT        StartRegister,
  [in] const float *pConstantData,
  [in] UINT        Vector4fCount
);

Parameters

[in] StartRegister

Type: UINT

Register number that will contain the first constant value.

[in] pConstantData

Type: const float*

Pointer to an array of constants.

[in] Vector4fCount

Type: UINT

Number of four float vectors in the array of constants.

Return value

Type: HRESULT

If the method succeeds, the return value is D3D_OK. If the method fails, the return value can be D3DERR_INVALIDCALL.

Requirements

   
Target Platform Windows
Header d3d9helper.h (include D3D9.h)
Library D3D9.lib

See also

IDirect3DDevice9