# define R300_TX_PITCH_EN (1 << 31)
# define R300_TX_WIDTH(x) ((x) << 0)
# define R300_TX_HEIGHT(x) ((x) << 11)
+# define R300_TX_NUM_LEVELS(x) ((x) << 26)
#define R300_TX_FORMAT1_0 0x44C0
/* The interpretation of the format word by Wladimir van der Laan */