?
Vielen Dank @0x00000001, so funktioniert es:
SetRenderState( D3DRS_SRCBLEND, D3DBLEND_SRCALPHA );
SetRenderState( D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA );
SetRenderState( D3DRS_TEXTUREFACTOR, 0x80FFFFFF );
SetTextureStageState( 0, D3DTSS_ALPHAARG2, D3DTA_TFACTOR );
SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_MODULATE );