glsl: Clean up shading language mixing check for GLSL 3.00 ES.

Previously, we prohibited mixing of shading language versions if
min_version == 100 or max_version >= 130.  This was technically
correct (since desktop GLSL 1.30 and beyond prohibit mixing of shading
language versions, as does GLSL 1.00 ES), but it was confusing.  Also,
we asserted that all shading language versions were between 1.00 and
1.40, which was unnecessary (since the parser already checks shading
language versions) and doesn't work for GLSL 3.00 ES.

This patch changes the code to explicitly check that (a) ES shaders
aren't mixed with desktop shaders, (b) shaders aren't mixed between ES
versions, and (c) shaders aren't mixed between desktop GLSL versions
when at least one shader is GLSL 1.30 or greater.  Also, it removes
the unnecessary assertion.

[v2, idr]: Slightly tweak the is_es_prog detection to occur outside the loop
instead of doing something special on the first loop iteration.  Suggested by
Ken.

[v3, idr]: s/IsEs(Shader|Prog)/IsES/  Suggested by Ken and Eric.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com> [v1]
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Carl Worth <cworth@cworth.org>
glsl: Record in gl_shader_program whether the program uses GLSL ES.

Previously we recorded just the GLSL version (or the max version, if
GLSL 1.10 and GLSL 1.20 programs were linked together).

[v2, idr]: s/IsEs(Shader|Prog)/IsES/  Suggested by Ken and Eric.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Carl Worth <cworth@cworth.org>
glsl: Fix linker checks for GLSL ES 3.00.

This patch updates the following linker checks to do the right thing
in GLSL 3.00 ES:

- Failing to write to gl_Position is allowed in GLSL 1.40+ as well as
  GLSL 3.00 ES.

- It is an error to write to both gl_ClipVertex and gl_ClipDistance in
  GLSL 1.30+.  This does not apply to GLSL 3.00 ES.

- GLSL 3.00 ES uses the same varying counting rules as GLSL 1.00 ES.

- In GLSL 1.30 and GLSL 3.00 ES, "discard" terminates the shader.

- In GLSL 1.00 ES and GLSL 3.00 ES, both a fragment and a vertex
  shader must be present.

[v2, idr]: Fix minro typo in a comment.  Noticed by Ken.

[v3, idr]: s/IsEs(Shader|Prog)/IsES/  Suggested by Ken and Eric.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Carl Worth <cworth@cworth.org>
glsl: Make {Min,Max}ProgramTexelOffset available to compiler.

These constants need to be made available to shaders in GLSL 3.00 ES.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Carl Worth <cworth@cworth.org>
glsl: Populate built-in types correctly for GLSL 3.00 ES.

This patch implements all of the built-in types for GLSL 3.00 ES.
This is almost exactly the same as the set of built-in types for GLSL
1.30, except ate 1D samplers are skipped, and samplerCubeShadow is
added.

This patch also addes an assertion so that when we add new GLSL
versions, we'll notice that we need to update the types.

In review, Eric noted:

    "This change looks correct.  The overall interaction of profiles is
    getting ugly, though.  I'm imagining a restructure of the symbol
    table population so that there's a big list of types, and each
    #version has a nice list of strings of type names copy and pasted
    out of its spec."

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Carl Worth <cworth@cworth.org>
glsl: Add builtin variables for GLSL 3.00 ES.

This patch also adds assertions so that when we add new GLSL versions,
we'll notice that we need to update the builtin variables.

[v2, idr]: s/Frab/Frag/  Noticed by Eric.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com> [v1]
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Carl Worth <cworth@cworth.org>
glsl: Make builtin function profiles for GLSL ES use "es" in the filename.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Carl Worth <cworth@cworth.org>
glsl: add determinant() functions.

These functions are defined in GLSL 1.50 and GLES 3.00 ES.

The formulas have been extracted from the existing implementation of
inverse().

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Carl Worth <cworth@cworth.org>
glsl: Create builtin function profiles for GLSL 3.00 ES.

Nearly all of the builtin functions in GLSL 3.00 ES are already
implemented in Mesa; this patch enables them.

A few functions are not implemented yet; those have been commented
out, with a FIXME comment to act as a reminder of what still needs to
be implemented.  Here is the complete list: packSnorm2x16,
unpackSnorm2x16, packUnorm2x16, unpackUnorm2x16, packHalf2x16,
unpackHalf2x16.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Carl Worth <cworth@cworth.org>
glsl: Allow layout qualifiers in GLSL 3.00 ES

Note that while 'packed' is a reserved word in GLSL ES, row_major is not.
This means that we have to use the string-based matching for that.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Acked-by: Carl Worth <cworth@cworth.org>
glsl: Add missing semicolon in the grammar

This may not be strictly necessary, but every other rule in the grammar ends
with a semicolon.  It also appears that this was supposed to be commited with
the original patch that changed this rule, but the wrong version of the patch
was accidentally pushed.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
llvmpipe: fix regression in gears speed.

This fixes the gears regression since transform feedback.

Reported-by: Brian Paul <brianp@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
build: Fix GLES linkage without libglapi

fixes a regression introduced with
fc9ea7c74dc5cb996c3d9fe6663fd6da080e8360

NOTE: This is a candidate for the 9.0 branch.

Reported-by: Brian Paul <brianp@vmware.com>
Acked-by: Matt Turner <mattst88@gmail.com>
glx/dri2: set the __DRI2_FLUSH_DRAWABLE flag where it should be set

Sorry, I accidentally omitted this.

It only broke MLAA.

Reviewed-by: Brian Paul <brianp@vmware.com>
trace: dump pipe_resource::nr_samples

Reviewed-by: Brian Paul <brianp@vmware.com>
r600g: transfers of MSAA color textures should do the resolve

so that ReadPixels and various fallbacks work.

Reviewed-by: Brian Paul <brianp@vmware.com>
gallium/u_blitter: fix conflict with u_memory.h

Reviewed-by: Brian Paul <brianp@vmware.com>
st/mesa: implement CopyTexSubImage for MSAA framebuffers

Reviewed-by: Brian Paul <brianp@vmware.com>

Just use pipe->blit, which can do resolve, flipping, and format conversions.
The util_blit_pixels codepath is still there for the cases where we have to
force alpha to 1.

This also turns on acceleration for copying GL_DEPTH_STENCIL.
st/dri: always allocate private depth-stencil buffers

This disables DRI2 sharing of zbuffers. The window zbuffer is allocated just
like any other texture - through resource_create.

The idea of allocating a zbuffer through DRI2 isn't very useful with MSAA,
where a single-sample zbuffer is useless.

IIRC, the Intel driver does the same thing.

Reviewed-by: Brian Paul <brianp@vmware.com>
st/dri: refactor dri_fill_in_modes

- We can use a single loop for adding new configs.
- The useless parameter depth_bits is removed.
- The maximum number of samples is bumped to 32.
- We can support Z16_UNORM and Z32_UNORM unconditionally since the zbuffers
  are private.

Reviewed-by: Brian Paul <brianp@vmware.com>