José Fonseca wrote: > > On 2002.03.03 13:48 Keith Whitwell wrote: > > ... > > > > The advantages of doing it this way: > > - unmapping rather than copying the data is probably faster. > > - no need to reformat data in kernel space. > > > > The disadvantages: > > - you have to re-write '_vbtmp.h' and maybe '_tritmp.h", and keep > > these uptodate with any bugfixes > > - the driver looks less like the other drivers and it is harder > > to incoperate new optimizations. > > - unmapping is more complex than copying. > > > > It's probably a matter of personal choice... > > Keith > > > > Since the advantages in getting DMA to work are substancially bigger than > those added by what I proposed, I'll choose to give one step at at time: > 1. finish the update of the mach64 driver to Mesa 4.x without any > changes in the templates > 2. make a mach64 emulate a d3d-like device as Keith suggested, and > emulate the DMA engine with PIO as well > 3. change the DMA emulation to a real DMA engine > 4. decide wether is viable/worthy to eliminate d3d-like vertex > translation by changing the templates. > > I think this way we can achive better know-how and even get to the final > result faster than attempt the 4th step right now.
Good plan... Keith _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
