[Mesa-dev] [PATCH] llvmpipe: fix PIPE_FORMAT_Z24_UNORM_S8_UINT depth on big endian

[Dave Airlie]

>
> I never really looked at the big endian stuff so I have no idea if this
> is right. I thought though the channel shift thing now should work
> without endianness awareness if you fetch one 32bit number and then
> break it up into parts with shifts due to the channel information being
> adjusted for big/little endian. I could be wrong though, but if it
> doesn't work that means there's probably some more mixup elsewhere (util
> or llvmpipe code for clearing has its own conversion, and obviously the
> format fetch used for depth texturing needs to match too).
>

Well I was mainly look at the code in u_format_zs.c that has big
endian handlers, and since this code directly loads from memory I
assumed it would need the same treatment,

however it seems a bit more subtle since we regress a few tests, but
pass a couple of hundred more, so I'll see if I can figure out what
else is missing.

Dave.