glsl: Fix loop bounds detection.

When analyzing a loop where the loop condition is expressed in the
non-standard order (e.g. "4 > i" instead of "i < 4"), we were
reversing the condition incorrectly, leading to a loop bound that was
off by 1.

Fixes piglit tests {vs,fs}-loop-bounds-unrolled.shader_test.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
mesa: Add ALIGN() macro to main/macros.h.

Previously this macro existed in 3 separate places, some inside the
intel driver and some outside of it.  It makes more sense to have it
in main/macros.h

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
glsl: Separate varying linking code to its own file.

linker.cpp is getting pretty big, and we're about to add even more
varying packing code, so split out the linker code that concerns
varyings to its own file.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
glsl: Plumb through is_parameter to apply_type_qualifier_to_variable()

This patch adds logic to allow the ast_to_hir function
apply_type_qualifier_to_variable() to tell whether it is acting on a
variable declaration or a function parameter.  This will allow it to
correctly interpret the meaning of "out" and "in" keywords (which have
different meanings in those two contexts).

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
glsl: Prohibit structs and bools from being used as "varyings".

The GLSL 1.30 spec only allows vertex shader outputs and fragment
shader inputs ("varyings" in pre-GLSL-1.30 parlance) to be of type
int, uint, float, or vectors, matrices, or arrays thereof.  Bools,
bvec's, and structs are prohibited.  (Integral varyings were
prohibited prior to GLSL 1.30).

Previously, Mesa only performed this check on variables declared with
the "varying" keyword, and it always performed the check according to
the pre-GLSL-1.30 rules.  As a result, bools and structs were allowed
to slip through, provided they were declared using the new in/out
syntax.

This patch modifies the error check so that it occurs after "varying"
is converted to "in/out", and corrects it to properly account for GLSL
version.

Fixes piglit tests:
  in-bool-prohibited.frag
  in-bvec2-prohibited.frag
  in-bvec3-prohibited.frag
  in-bvec4-prohibited.frag
  in-struct-prohibited.frag
  out-bool-prohibited.vert
  out-bvec2-prohibited.vert
  out-bvec3-prohibited.vert
  out-bvec4-prohibited.vert
  out-struct-prohibited.vert

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
glsl: Pack flat "varyings" of mixed types together.

This patch enhances the varying packing code so that flat varyings of
uint, int, and float types can be packed together.

We accomplish this in lower_packed_varyings.cpp by making the type of
all flat varyings ivec4, and then using information-preserving type
conversions (e.g. ir_unop_bitcast_f2i) to convert all other types to
ints.

The varying_matches::compute_packing_class() function is updated to
reflect the fact that varying packing no longer needs to segregate
varyings of different base types.

Fixes piglit test varying-packing-mixed-types.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

v2: Split lower_packed_varyings_visitor::bitwise_assign into
pack/unpack variants.
st/mesa: fix possible MSVC build error v2

https://bugs.freedesktop.org/show_bug.cgi?id=59143

Using GLubyte as per Brian's suggestion.
r600g: implement buffer copying using CP DMA for R7xx, Evergreen, Cayman

R6xx doesn't work - the issue seems to be with flushing (sometimes
the destination buffer contains garbage). There are no hangs, so we're good.

R7xx doesn't seem to have any alignment restriction despite our initial
thinking. Everything just works.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
i965/fs: Fix struct vs. class in acp_entry definitions.
glsl: Don't add structure fields to the symbol table

I erroneously added this back in January 2011 in commit 88421589.
Looking at the commit message, I have no idea why I added it.  It only
added non-array structure fields to the symbol table, so array structure
fields are treated correctly.

Fixes piglit tests structure-and-field-have-same-name.vert and
structure-and-field-have-same-name-nested.vert.  It should also fix
WebGL conformance tests shader-with-non-reserved-words.

NOTE: This is a candidate for the stable release branches.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=57622
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
automake: Convert Gallium target and winsys
gallium: Add common automake include file

v2: Matt Turner <mattst88@gmail.com>
    Remove ARCH_FLAGS/OPT_FLAGS

v3: Johannes Obermayr <johannesobermayr@gmx.de>
    Add -I$(top_srcdir)/include to GALLIUM_CFLAGS
r300g: Use gallium automake include file

[mattst88] v2: Remove ARCH_FLAGS/OPT_FLAGS
r300g: Build a libtool archive
r300g: Link ralloc.c and register_allocate.c into separate library
radeon/winsys: Convert to automake
trace: Convert to automake
libgallium: Convert to automake
r600g: Use gallium automake include file
i915g: Convert to automake