Fix program refcounting assertion failure during context tear-down
When purging the program hash table, the refcount _should_ be one since
the program is referenced by the hash table. Need to explicitly set to
zero before calling delete().
Also, purge high-level shader hash tables before low-level program hash tables.
Fix a program refcounting error, don't share program parameter lists.
The refcounting bug was causing a memleak (unfreed programs).
The old parameter list sharing is not needed since the change in how
uniforms are handled.
Updated GLSL uniform/sampler handling from gallium-0.1 branch
Previously, the shader linker combined the uniforms used by the vertex and
fragment shaders into a combined set of uniforms. This made the implementation
of glUniform*() simple, but was rather inefficient otherwise. Now each shader
gets its own set of uniforms (no more modelview matrix showing up in the
fragment shader uniforms, for example).
cherry-picked by hand from gallium-0.1 branch
Default DRI driver directory to match X.Org xserver
Since the only valid consumer of the DRI drivers is the X.Org xserver,
this changes the default DRI driver directory to match xorg-server:
${libdir}/dri. The old default of /usr/X11R6/modules/dri was wrong for
nearly all current systems.
autoconf: Attempt to figure out the PIC flags for the platform
This commit adds an autoconf macro, MESA_PIC_FLAGS, which sets the
PIC flags according to platform and static/shared setting. The platform
specifics are taken straight from libtool.m4 and stripped down to just
the flags and platforms we cover in Mesa. This should hopefully make it
possible to use autoconf on non-GCC platforms.
The macro is added external to configure.ac in acinclude.m4 since it's
pretty bloated.
Note to BSDers: Previously, x86 defaulted to non-PIC on FreeBSD. I
didn't carry that preference into this macro. Instead, you can just use
--disable-pic where desired.