/*
RwBool _rwDMAOpenVIFPkt(RwUInt32 type, RwUInt32 size);


DMAcnt
	flush
	unpack
		*matrix
		camera
	base, offset
	lightPkt
*/

u_long128 flushCmd128;
u_long128 xMaxYMax128;
u_long128 vu1DataXYZScale;
u_long128 vu1DataXYZShift;
u_long128 vu1DataOffset3D;
u_long128 baseOffsetCmd128;

RwBool
openVU1SetupPktNew(const RwMatrix *matrix,
                   const u_long128 *lightPkt,
                   RwUInt32 lightPktLen)
{
	RwUInt128 ltmp;
	RwUInt64 tmp, tmp1;
	RwUInt64 size;	// of UNPACK

	RwUInt32 dest = vuSDmat0;
	size = 6;	// matrix, near&far clip
	if(matrix == NULL){
		size = 0;
		dest = vuSDxMaxyMax;
	}
	size += 4;	// camera values
	// TODO: what is the extra qword here?
	_rwDMAOpenVIFPkt(0, 3+size+1+lightPktLen + 1);

	RWDMA_LOCAL_BLOCK_BEGIN();

	// DMAcnt
	tmp = (1L << 28) | (
		2 +	// flush + unpack
		size +	// unpack data
		1 +     // base, offset
		lightPktLen);
	MAKE128(ltmp, 0L, tmp);
	RWDMA_ADD_TO_PKT(ltmp);

	// flush
	RWDMA_ADD_TO_PKT(flushCmd128);

	// Unpack camera/object data
	tmp = (((0x6CL << 24) | /* VIF unpack 4-32 */
	        (size << 16) |  /* Transfer size */
	       (dest)) << 32) | /* destination on VU1 */
	      ((1L << 24) | (4 << 8) | (4)); /* How to unpack, length 4W, stride 4W */
	MAKE128(ltmp, tmp, 0L);
	RWDMA_ADD_TO_PKT(ltmp);

	if(matrix){
		RwUInt32 *matVector;

		matVector = (RwUInt32 *)(&matrix->right);
		tmp  = matVector[0] | ((RwUInt64)(matVector[1])<<32);
		tmp1 = matVector[2] | ((RwUInt64)(matVector[2])<<32);
		MAKE128(ltmp, tmp1, tmp);
		RWDMA_ADD_TO_PKT(ltmp);

		matVector = (RwUInt32 *)(&matrix->up);
		tmp  = matVector[0] | ((RwUInt64)(matVector[1])<<32);
		tmp1 = matVector[2] | ((RwUInt64)(matVector[2])<<32);
		MAKE128(ltmp, tmp1, tmp);
		RWDMA_ADD_TO_PKT(ltmp);

		matVector = (RwUInt32 *)(&matrix->at);
		tmp  = matVector[0] | ((RwUInt64)(matVector[1])<<32);
		tmp1 = matVector[2] | ((RwUInt64)(matVector[2])<<32);
		MAKE128(ltmp, tmp1, tmp);
		RWDMA_ADD_TO_PKT(ltmp);

		matVector = (RwUInt32 *)(&matrix->pos);
		tmp  = matVector[0] | ((RwUInt64)(matVector[1])<<32);
		tmp1 = matVector[2] | ((RwUInt64)(matVector[2])<<32);
		MAKE128(ltmp, tmp1, tmp);
		RWDMA_ADD_TO_PKT(ltmp);

		MAKE128(ltmp, 0L, 0L);
		// near and far clip. why 0?
		RWDMA_ADD_TO_PKT(ltmp);
		RWDMA_ADD_TO_PKT(ltmp);
	}
	RWDMA_ADD_TO_PKT(xMaxYMax128);		// vuSDxMaxyMax; zw: fog
	RWDMA_ADD_TO_PKT(vu1DataXYZScale);	// vuSDcamWcamHzScale
	RWDMA_ADD_TO_PKT(vu1DataXYZShift);	// vuSDoffXoffYzShift
	RWDMA_ADD_TO_PKT(vu1DataOffset3D);	// vuSDrealOffset
	// end of UNPACK

	// base and offset
	RWDMA_ADD_TO_PKT(baseOffsetCmd128);

	// Light packet
	while(lightPktLen--)
		RWDMA_ADD_TO_PKT(*lightPkt++);

	RWDMA_LOCAL_BLOCK_END();

	return TRUE;
}