Deletes a lot of pointless duplication, as well as some run-time effort.

Conveniently, GLSL 1.40 no longer needs a .vert variant, since it
doesn't define any built-ins specific to the vertex shader stage.

ARB_texture_rectangle and OES_EGL_image_external also only need a single
profile, since the .vert and .frag variants were identical.

I didn't bother with EXT_texture_array and OES_texture_3D because
they're so tiny that the savings would be miniscule.

Cuts the generated builtin_function.cpp from 1.7MB to 1.0MB (41%).

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Ian Romanick <ian.d.romanick@intel.com>

The built-in subsystem uses "profiles," or GLSL shaders containing
prototypes for all built-ins supported within a particular language
version (or extension) and shader stage.

Since profiles were stage-specific, we had to cut and paste almost all
the prototypes between (e.g.) 110.vert and 110.frag.  Naturally, this
led to sundry cut and paste bugs, where someone fixed an issue in .frag
but neglected to update .vert, or vice-versa.  Geometry shaders would
have only made this worse.

This patch introduces support for a new '.glsl' profile suffix which
contains prototypes common to all shader stages.  The existing '.frag'
and '.vert' profiles need only contain the few stage-specific built-ins.

Not only does this remove duplication, it makes built-in setup slightly
faster: we don't need to re-read the common prototypes and function
bodies for both the vertex and fragment shader stage.

Internally, this was trivial.  We already create a list of gl_shader
objects to search through for built-ins: one for the core language
version/stage, and additional shaders for any extensions in use.  This
patch simply adds another shader to the list: core/common, core/stage,
and extensions.

The next patch will update the profiles to remove the duplication.
It's separated out purely to make review easier.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Ian Romanick <ian.d.romanick@intel.com>

These ought to be treated as 'any stage', but for now, they're just
treated as vertex shaders.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Ian Romanick <ian.d.romanick@intel.com>

Accelerates a few glReadPixels cases for WebGL.
See https://bugs.freedesktop.org/show_bug.cgi?id=48545

v2: Per Jose, use bit twiddling for the swizzle case instead of ubyte
arrays (it's about 44% faster).

Note: This is a candidate for the 8.0 branch.

Reviewed-by: José Fonseca <jfonseca@vmware.com>

ia64 on Linux can use DRI as well.

Reported-by: russiane39 on #radeon
Bugzilla: http://bugs.freedesktop.org/show_bug.cgi?id=48788
Signed-off-by: Dave Airlie <airlied@redhat.com>

The GLSL 1.30 -> 4.10 specs all erroneously say "vec2" for a few
overloads of textureProjGradOffset, while most overloads and all other
texturing functions use ivec types.

The GLSL 4.20 specification corrects these to "ivec2", but doesn't
mention this as being a conscious change in behavior.  Nor does the
ARB_shading_language_420pack extension.  So presumably it was a typo.

At any rate, our builtin functions all use ivec already, so the fact
that these prototypes use plain vecs will only lead to applications
dying in a fire when trying to use them.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>

Was made configurable in e44089b2f7
for Kepler but forgot to update nv50.

This reverts commit 4ec449a6ed.

I meant to not push this one.  Review found that a link error is not
mandated: it should link, but you get undefined rendering if you rely
on a missing stage.

     page 42/55 section 2.11 "Vertex Shaders":

     "If the program object has no vertex shader, or no program object
      is currently in use, the results of vertex shader execution are
      undefined."

(and similar for page 160/173 section 3.9 "Fragment Shaders" for FS,
and page 45/58 section 2.11.2 "Program Objects" for program being 0)

It turns out the commit was broken anyway, because it was missing a
"goto done", so linkstatus got smashed back to true later and the
error just showed up as a warning in the infolog.

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

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

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

All I know of that needs finishing in Mesa is to enable the extension
in a GL3.1 core context on i965 -- we're not going to expose it in
non-3.1 core contexts.

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

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

Fixes the new piglit texelFetch() tests on these.  Note that the rest
of the new functions are not tested (same as the non-2DRect versions
of most of them).

Indirectly caught by Ken's review of my GLSL 1.40 changes where I
copy-and-pasted this line.

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

The non-integer versions were already reserved in 1.30, but apparently
these were forgotten.

Fixes piglit glsl-1.40/compiler/reserved/

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

Fixes the corresponding new tests in piglit.

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

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

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

The whole point of importing it was that you're not supposed to
install this library.

Reviewed-by: Matt Turner <mattst88@gmail.com>
Fixes: https://bugs.gentoo.org/show_bug.cgi?id=411825
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

Prevents this error with Automake 1.9:

src/gallium/drivers/Makefile.am: C objects in subdir but
`AM_PROG_CC_C_O' not in `configure.ac'
autoreconf: automake failed with exit status: 1

Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

5b0cd37324 wasn't meant to be pushed.

Fixes demos/lodbias.

radeonsi and r600 have duplicate symbols, so it's not possible to
statically link both.  Remove the newcomer, radeonsi, until duplicate
symbols are fixed.

Most things that work on Fermi should work on Kepler too.

There are a few performance optimizations left to do, like better
placement of texture barriers and adding scheduling data to the
shader instructions (without them, a thread group will be masked
for 32 cycles after each single instruction issue).

Fixes build broken by commit 0d29fb017b

gl_ClipDistance is treated the same way, this is just nicer and
easier assign slots for them on nv50.

This is more flexible than the linear scan, and we don't need the
separate allocation pass for constrained values anymore.