http://bugs.freedesktop.org/show_bug.cgi?id=26471





--- Comment #13 from Nils Kneuper <[email protected]>  2010-02-09 14:16:24 
PST ---
Okay, some updates.
1) As testcase you can also use rev1715. In this one there is no change to the
makefile required. If you got the libs, you should be able to compile things
with a simple "make". Yes, in >=r1713 basically all textures "vanished".


2) In IRC, talking with agd5f and Jetrel (one of the people working on
frogatto) we found the reason for those missing textures. Here is the
respective part from the logs of #radeon:

[22:47:36] <agd5f> Ivanovic, stikonas: does it work any better/worse with mesa
7.7 branch?
[22:51:40] <Ivanovic> agd5f: no visible difference for me in frogatto r1712
[22:51:58] <Ivanovic> agd5f: that with both, git master and mesa 7.7 (release
version) it looks identical
[22:52:08] <agd5f> Ivanovic: ok.  so probably not the blit code
[22:52:51] <agd5f> Ivanovic: if you use non-float values for vertex attributes
that may be a problem
[23:09:07] <Ivanovic> agd5f: just talked to jetrel (he is online in irc, though
he tends to not join too many chans...), he said that they intentionally use
shorts for the vertex attributes since this is just the precision required
[23:09:21] <Ivanovic> agd5f: this should explain the reason for the problems,
right?
[23:09:54] <Ivanovic> the reason for this is the reduced memory bandwidth
compared to using floats
[23:09:56] <agd5f> Ivanovic: yes.  they are broken right now in git
[23:10:48] <Ivanovic> okay
[23:11:15] <Ivanovic> agd5f: want me to add this as comment to the bugreport or
will you take care of it? (that is: i would just paste this part of the
changelog)
[23:12:19] <agd5f> Ivanovic: yes please


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