Since core Mesa MAX_TEXTURE_LEVELS was bumped, we were incorrectly advertising
a maximum texture size of 4096 on older chips, causing corrupted menu text in
Extreme Tux Racer or Armagetron.
Also make sure our texture image array can actually hold all the mipmap levels
we support...
To distinguish from the -0.2 version still being maintained on the
gallium-mesa-7.4 branch. There are already greater interface changes
between these two branches than there were between -0.2 and -0.1.
Also stop injecting Tungsten into the vendor string - the Gallium in
the renderer string should be sufficient.
The FBO pixel coordinate system, with (0,0) as the
upper-left pixel, is inverted in Y compared to the
normal OpenGL pixel coordinate system, which has
(0,0) as its lower-left pixel.
Viewport and polygon stipple are sensitive to this
inversion; so is point rasterization. The basic
fix is simple: when rendering to an FBO, instead
of the normal RASTRULE_UPPER_RIGHT that's
appropriate for OpenGL windows, use the Y inversion
RASTRULE_LOWER_RIGHT.
Unfortunately, current Intel documentation has this
value listed as "Reserved, but not seen as useful".
It does work on at least some i965-class devices,
though; and the worst that could happen if an
older device didn't support it would be incorrect
point rasterization to FBOs, which is what happens
already, so this fix is at least no worse than what
happens presently, and is better for some (and possibly
all) i965-class devices.
This also cuts instructions by just using the existing bit in the payload
rather than computing it from the determinant in the SF unit and passing it
as a varying down to the WM. Something still goes wrong with getting the
backface color right, but a simpler shader appears to get the right result.
Previously, we would sample (f,glFrontFacing,undef,undef) instead of the
(f,0,0,1) that fragment.fogcoord is supposed to return. Due to
glFrontFacing's presence in FOGC.y, we'll still give bad results there when
glFrontFacing is used.
Bug #19122, piglit testcase fp-fog.
Turns out that XXX comment was important. We weren't flagging the WM to
re-update with the statistics enable, so we got zeroes out of our query.
Bug #20740, fixes piglit occlusion_query test.
Signed-off-by: Eric Anholt <eric@anholt.net>
