#define PACKET3_3D_DRAW_IMMD 0x29
#define PACKET3_3D_DRAW_INDX 0x2A
#define PACKET3_3D_LOAD_VBPNTR 0x2F
+#define PACKET3_3D_CLEAR_ZMASK 0x32
#define PACKET3_INDX_BUFFER 0x33
#define PACKET3_3D_DRAW_VBUF_2 0x34
#define PACKET3_3D_DRAW_IMMD_2 0x35
#define PACKET3_3D_DRAW_INDX_2 0x36
+#define PACKET3_3D_CLEAR_HIZ 0x37
#define PACKET3_BITBLT_MULTI 0x9B
#define PACKET0(reg, n) (CP_PACKET0 | \