Get a constant from the constant table.
D3DXHANDLE GetConstantElement( D3DXHANDLE hConstant, UINT Index );
Returns a unique identifier to the constant.
To get a constant that is not part of an array, use ID3DXTextureShader::GetConstant or ID3DXTextureShader::GetConstantByName.
Header: Declared in D3dx9shader.h.