On 17 March 2010 12:20, Christian Costa <titan.costa at wanadoo.fr> wrote: > +#define ID3DXConstantTable_GetSamplerIndex(p,a) (p)->lpVtbl->GetConstantDesc(p,a) > +#define ID3DXConstantTable_GetSamplerIndex(p,a) (p)->GetConstantDesc(p,a) Looks wrong.