On Fri, 14 Jan 2005 20:04:48 -0500 (EST), Vladimir Dergachev <[EMAIL PROTECTED]> wrote: > > > On Fri, 14 Jan 2005, Jerome Glisse wrote: > > >>>> On Fri, 2005-01-14 at 16:34 +0100, Jerome Glisse wrote: > >>>>> > >>>>> Anyway i wanted to ask mesa folks how to make a real > >>>>> proper patch. The fact is that INREG & OUTREG in > >>>>> server/radeon_macros.h have to do endian swapping. > >>>>> Moreover the swapping is only needed for r300, isn't it ? > >>>>> So do we need to have our own copy of radeon_macros.h > >>>>> insted of using the one from dri/radeon/ ? > >>>> > >>>> No. Try this patch, which is quite ugly though, most of this shouldn't > >>>> be in driver specific code IMHO. > >>>> > >>> What about INREG16 & OUTREG ? > >> > >> The 3D driver shouldn't have write access to the registers, and at least > >> the radeon and r200 drivers only use 32 bit register reads because all > >> registers relevant to them are 32 bit. Has this changed in r300? > > > > Don't think this have changed, i haven't looked to the whole code, > > still reading r200 & r300 code to understood the whole things :) > > No it did not, I certainly would not mess with it. > > One idea/suggestion that I had for a long while is to not correct for > endianness in software but rather use a feature of Radeon cards where > several apertures are available. > > For example, there are two copies of register aperture one with low-endian > translation and one with big-endian. > > One could map the appropriate one for plain reads, and use properly > modified register addresses for HOSTDATA_BLT - though I am not 100% sure > about how this will work. > > It might be that ATI got rid of all the friendly endianness swapping bits > in favour of this approach.
Where can i see that ? If you could provide me some more informations, i am willing to test that :) best, Jerome Glisse ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt -- _______________________________________________ Dri-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dri-devel
