Michel Dänzer <mic...@daenzer.net> writes: > On Mon, 2014-03-10 at 10:11 +0100, Christian Zigotzky wrote: >> On 10.03.2014 02:49, Michel Dänzer wrote: >> > >> > Congratulations, you just broke llvmpipe again on big endian systems. ;) >> I'm sorry but Mesa classic works very well on Debian Sid and Lubuntu >> 14.04 with these changes. ;) Why does Mesa classic work with the >> little-endian defines? > > What do you mean by 'Mesa classic'? The r600g driver works with the > little endian defines because r600g assumes st/mesa uses the formats the > way it did before the llvmpipe big endian fixes. > >> > Did you even look at the commits introducing those defines? Did you >> > really think those defines, with explicit endianness checks, were >> > introduced for no reason but to break drivers on big endian systems? >> > >> > >> > I explained the problem in r600g and how it could be solved. Please >> > explore that. >> I'll try to explore that but I don't have any knowledge about the Mesa >> source code. The Fedora guys have solved the problem with the patch >> "mesa-9.2-llvmpipe-on-big-endian.patch". What do you think of this patch? > > It sounds like an older downstream attempt at fixing llvmpipe on big > endian hosts, which was superseded by the upstream fixes, which were > incidentally pushed by the 'Fedora guy' Adam Jackson. Adding him and > Richard Sandiford (the author of the fixes) to CC, maybe they can help > you fix up r600g.
I don't know the r600 code at all, sorry. But like you say, if the code is treating the x8y8z8w8 formats as low-to-high integers (x in lsb, z in msb) then the right fix should be to use PIPE_FORMAT_xyzw8888_* instead of PIPE_FORMAT_x8y8z8w8_*. Thanks, Richard _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
