From: Michel <mi...@da...> - 2005-01-23 20:54:14
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On Sun, 2005-01-23 at 12:31 +0100, Jerome Glisse wrote: >=20 > I was wondering what was the differences between using hostdata_blt > & bitblt_multi. One faster than other ? Do not use same path for reading > data ? Indeed, the BITBLT_MULTI type 3 packet only allows blits within the GPU's address space, whereas hostdata blits transfer data from the CPU (the host) to the GPU. The fact that the former works correctly just means that the source data in the framebuffer already has the correct byte order. > Other register that i am wondering about there use : > RADEON_DP_MIX (0x16c8) Select source data location and ROP, both of which are mirrored in DP_GUI_MASTER_CNTL. > RADEON_DP_GUI_MASTER_CNTL_C (0x1c84) Are you sure this is correct? At least on R200, 0x1c84 is a completely different register... --=20 Earthling Michel D=C3=A4nzer | Debian (powerpc), X and DRI develop= er Libre software enthusiast | http://svcs.affero.net/rm.php?r=3Ddaenzer |