IDirect3DDevice9::SetVertexShaderConstantF

Sets a floating-point vertex shader constant.

HRESULT SetVertexShaderConstantF(
  UINT StartRegister,
  CONST float * pConstantData,
  UINT Vector4fCount
);

Parameters

StartRegister

[in] Register number that will contain the first constant value.

pConstantData

[in] Pointer to an array of constants.

Vector4fCount

[in] Number of four float vectors in the array of constants.

Return Values

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

Requirements

Header: Declared in D3d9.h.