ws/i965: pull in the rest of the i915 winsys tree.
The intel_xorg file looks like it's got quite a bit of code that could
be lifted up into the xorg state tracker -- should really just have a
list of pci ids and a pointer to a screen create func.
gallium: remove extended negate also, and also the ExtSwz token
Likewise, the extended negate functionality hasn't been
used since mesa switched to using tgsi_ureg to build programs,
and has been translating the SWZ opcode internally to a single MAD.
These haven't been used by the mesa state tracker since the
conversion to tgsi_ureg, and it seems that none of the
other state trackers are using it either.
This helps simplify one of the biggest suprises when starting off with
TGSI shaders.
Provide a dummy implementation in the GL state tracker (move 0.5 to
the destination regs).
At some point, a motivated person could add a better
implementation of noise. Currently not even the nvidia
binary drivers do anything more than this. In any case, the
place to do this is in the GL state tracker, not the poor
driver.
Revert "Store clipping distance for user clip planes as part of vertex processing"
This reverts commit f058b25881.
This change is completely wrong in so many ways. When clip distances
are generated as part of vertex processing, they must be interpolated
to perform clipping. Geometric clipping goes right out the window.
glx: don't destroy context immediately if it's currently bound
According to the GLXDestroyContext() man page, the context should not
immediately be destroyed if it's bound to some thread. Wait until it's
unbound to really delete it. The code for doing the later part is
already present in MakeContextCurrent() so no change was needed there.
i965: fix hacked Fallback usage in brw_prepare_vertices()
Setting intel->Fallback = 1 clobbered any fallback state that was already
set. Not sure where this hack originated (the git history is a little
convoluted). Define and use a new BRW_FALLBACK_DRAW bit instead. This
shouldn't break anything and could potentially fix some bugs (but no
specific ones are known).