Как определить тип установленой видеокарты с помощью D3D

bool GeForce9500GT = false; // NVIDIA GeForce 9500 GT
bool RadeonHD4800Series = false; // ATI Radeon HD 4800 Series

const int VENDOR_NVIDIA = 0x10DE;
const int VENDOR_ATI = 0x1002;

const int DEV_G96 = 0x0643;
const int DEV_RV790 = 0x9462;

D3DADAPTER_IDENTIFIER8 id;
lpObj->GetAdapterIdentifier (D3DADAPTER_DEFAULT, D3DENUM_NO_WHQL_LEVEL, &id);
if (id.VendorId == VENDOR_NVIDIA)
{
  GeForce9500GT = (id.DeviceId == DEV_G96);
}
else if (id.VendorId == VENDOR_ATI)
{
  RadeonHD4800Series = (id.DeviceId == DEV_RV790);
}