intel: Rename brw_get_device_name/info to gen_get_device_name/info

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

intel: s/brw_device_info/gen_device_info/

Generated by:

sed -i -e 's/brw_device_info/gen_device_info/g' src/intel/**/*.c
sed -i -e 's/brw_device_info/gen_device_info/g' src/intel/**/*.h
sed -i -e 's/brw_device_info/gen_device_info/g' **/i965/*.c
sed -i -e 's/brw_device_info/gen_device_info/g' **/i965/*.cpp
sed -i -e 's/brw_device_info/gen_device_info/g' **/i965/*.h

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

intel: Add a new "common" library for more code sharing

The first thing to go in this new library is brw_device_info.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

intel/blorp: fix typo in android makefile

Acked-by: Jason Ekstrand <jason@jlekstrand.net>

nir: remove unused variable

This was let over from aad4f15506c

Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com>

nir: remove some fields from nir_shader_compiler_options

I accidentally added these with 0dc4cab. Oops!

nir: fix bug with moves in nir_opt_remove_phis()

In 144cbf8 ("nir: Make nir_opt_remove_phis see through moves."), Ken
made nir_opt_remove_phis able to coalesce phi nodes whose sources are
all moves with the same swizzle. However, he didn't add the logic
necessary for handling the fact that the phi may now have multiple
different sources, even though the sources point to the same thing. For
example, if we had something like:

if (...)
   a1 = b.yx;
else
   a2 = b.yx;
a = phi(a1, a2)
... = a

then we would rewrite it to

if (...)
   a1 = b.yx;
else
   a2 = b.yx;
... = a1

by picking a random phi source, which in this case is invalid because
the source doesn't dominate the phi. Instead, we need to change it to:

if (...)
   a1 = b.yx;
else
   a2 = b.yx;
a3 = b.yx;
... = a3;

Fixes 12 CTS tests:
ES31-CTS.functional.tessellation.invariance.outer_edge_symmetry.quads*

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

nir: add nir_after_phis() cursor helper

And re-implement nir_after_cf_node_and_phis() using it.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

glsl: expose max atomic counter/buffer consts for tess in ES 3.2

Curiously OES/EXT_tessellation_shader leave these out, while ES 3.2 adds
them in.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

mapi: don't forget to expose GetPointerv in GL ES 3.2

I left this out of my previous commit that went around enabling all of
the other ES 3.2 entrypoints.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

main: add KHR_robustness to ES 3.2 extension requirements

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

nv50,nvc0: respect render condition enable flag when clearing rt/zs

This is a newly added flag. We always pass false into it from
nv50_clear_texture, but other callers may want to respect the render
condition. (And the functions were originally spec'd to respect it.)

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>

nvc0/ir: don't dual-issue ops that depend or interfere with each other

Signed-off-by: Karol Herbst <karolherbst@gmail.com>
Reviewed-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
[imirkin: rewrite to split up the helpers and move more logic to target]
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>

nir: Remove fake edges in the CF handling code

When NIR was first introduced, Connor added this fake-edge hack to work
around issues related to unreachable blocks.  Thanks to GLSL IR's jump
lowering code, the only unreachable code you can have is a block after an
infinite loop.  With SPIR-V, we didn't have the jump lowering code so we
could also end up with the "if (...) { break; } else { continue; }" case
which generates an unreachable block after the if.  Because of this, most
of NIR had to be fixed up for handling unreachable blocks.  The only
remaining case of not handling unreachable blocks was specifically the
block-after-infinite-loop case in dead_cf which was fixed by the previous
commit.  We can now delete the fake edge hack.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>

nir/dead_cf: Don't crash on unreachable after-loop blocks

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Connor Abbott <cwabbott0@gmail.com>

nvc0: reduce the initial code segment size to 512KB

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

nvc0: allow to resize the code segment dynamically

When an application uses a ton of shaders, we need to evict them
when the code segment is full but this is not really a good solution
if monster shaders are used because code eviction will happen a lot.

To avoid this, it seems better to dynamically resize the code
segment area after each eviction. The maximum size is arbitrary
fixed to 8MB which should be enough.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

nvc0: add a new bin for the code segment

To avoid the bins list to grow up indefinitely when the code segment
size will be bumped, we need to separate that bin from the SCREEN
one because it contains other resources like the uniform bo.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

nvc0: add nvc0_screen_resize_text_area() helper

This function will be helpful for resizing the code segment
area when we need to evict all shaders.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

nvc0: re-upload currently bound shaders after code eviction

This fixes a very old issue which happens when the code segment
size is full. A bunch of real applications like Tomb Raider,
F1 2015, Elemental, hit that issue because they use a ton of shaders.

In this case, all shaders are evicted (for freeing space) but all
currently bound shaders also need to be re-uploaded and SP_START_ID
have to be updated accordingly.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

nvc0: refactor the program upload process

This refactoring will help for fixing the "out of code space"
eviction issue because we will need to reupload the code for
all currently bound shaders but it's slightly different than
uploading a new fresh code.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

i965: fix noop_scissor range issue on width/height

If scissor X or Y was set to a negative value then the previous
code might have indicated noop scissors when the scissor range
actually was masking a portion of the framebuffer.

Since fb->_Xmin, _Xmax, _Ymin and _Ymax take scissors into
account, we can use these to test for a noop scissor.

Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Jordan Justen <jordan.l.justen@intel.com>

glsl: Only force varyings to be flat when varying packing.

Varying packing would like to mark certain variables as flat.
This works as long as both sides of the interfaces are changed
accordingly.  However, with SSO, we disable varying packing on
the outermost stages.  We also disable varying packing for
certain tessellation stages.

With SSO, we operate on the producer and consumer separately.
Checks based on the consumer stage and variable are risky, and
can easily lead to altering one half of the interface between
stages, breaking SSO pipeline IO validation.

Just stop monkeying around with interpolation modes unless
required for varying packing.  There's no point.  This also
disables it in unsafe SSO cases.

Fixes CTS tests:
*.tessellation_shader.tessellation_control_to_tessellation_evaluation.gl_MaxPatchVertices_Position_PointSize

Also fixes Piglit's spec/oes_geometry_shader/sso_validation:
- user-defined-gs-input-not-in-block.shader_test
- user-defined-gs-input-in-block.shader_test

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

glsl: Reject TCS/TES input arrays not sized to gl_MaxPatchVertices.

We handled the unsized case, implicitly sizing arrays to the value
of gl_MaxPatchVertices.  But if a size was present, we failed to
raise a compile error if it wasn't the value of gl_MaxPatchVertices.

Fixes CTS tests:

  *.tessellation_shader.compilation_and_linking_errors.
  {tc,te}_invalid_array_size_used_for_input_blocks

Piglit's tcs-input-read-nonconst-* tests have recently been fixed.
This patch will break older copies of those tests, but the latest
should continue working.  Update to Piglit 75819c13af2ed5.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>

wayland-drm: add missing NULL check

Although malloc is unlikely to fail check its return value nevertheless.

Signed-off-by: Frank Binns <frank.binns@imgtec.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

loader: fix sysfs uevent file parsing

When trying to get a device name for an fd using sysfs, it would always fail
as it was expecting key/value pairs to be delimited by '\0', which is not the
case.

Signed-off-by: Frank Binns <frank.binns@imgtec.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

egl: only store device name when Wayland support is built

The device name is only needed for WL_bind_wayland_display so make this clear
by only storing the device name when Wayland support is built.

Signed-off-by: Frank Binns <frank.binns@imgtec.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

isl: round format alignment to nearest power of 2

A few inline asserts in anv assume alignments are power of 2, but with
formats like R8G8B8 we have odd alignments.

v2: round up to power of 2 (Ilia)

v3: reuse util_next_power_of_two() from gallium/aux/util/u_math.h (Ilia)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

gallium/postprocess: Fix resource freeing

The code was triggering asserts in DEBUG builds of the SVGA driver since
the reference count of the resource was never decremented before destroy.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

st/mesa: expose OES_geometry_shader and OES_texture_cube_map_array

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

Introduce .editorconfig

A few weeks ago, Jose Fonseca suggested [0] we use .editorconfig files
to try and enforce the formatting of the code, to which Michel Dänzer
suggested [1] we start by importing the existing .dir-locals.el
settings. The first draft was discussed in the RFC [2].

These .editorconfig are a first step, one that has the advantage of
requiring little to no intervention from the devs once the settings
files are in place, but the settings are very limited. This does have
the advantage of applying while the code is being written.
This doesn't replace the need for more comprehensive formatting tools
such as clang-format & clang-tidy, but those reformat the code after
the fact.

[0] https://lists.freedesktop.org/archives/mesa-dev/2016-June/121545.html
[1] https://lists.freedesktop.org/archives/mesa-dev/2016-June/121639.html
[2] https://lists.freedesktop.org/archives/mesa-dev/2016-July/123431.html

Acked-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Reviewed-by: Jose Fonseca <jfonseca@vmware.com>

vc4: Add missing break statement.

This opcode isn't used yet, so it didn't affect anything.  Caught by
Coverity, reported to me by imirkin.

gallium/docs: clarify render_condition_enabled parameter to clear functions

If false, it means do the clear unconditionally.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>

mesa: Add some more .gitignore

i965: Pass start_offset to brw_set_uip_jip().

Without this, we would pass over the instructions in the SIMD8 program
(which is located earlier in the buffer) when brw_set_uip_jip() is
called to handle the SIMD16 program.

The assertion about compacted control flow was bogus: halt, cont, break
cannot be compacted because they have both JIP and UIP. Instead, we
should never see a compacted instruction in this code at all.

Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>

i965: Merge gen7_clip_state atom into gen6_clip_state atom.

The original motivation was that gen6_clip_state ignored _NEW_POLYGON
as it didn't care about early culling.  The only other change was that
Gen6 ignored BRW_NEW_TES_PROG_DATA as it doesn't have tessellation
shaders, but listening to this is harmless as it'll never be signalled.

Now that we've added _NEW_POLYGON for is_drawing_lines/points, we can
merge the two as the distinction is meaningless.

This actually fixes a bug, though: Gen8+ was using the gen6_clip_state
atom because it doesn't care about early culling, but it also needs
BRW_NEW_TES_PROG_DATA, which was missing.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>

i965: Use gs_prog_data in is_drawing_points/lines().

State upload code should use prog_data rather than poking at core
Mesa shader data structures wherever possible.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>

i965: Fix missing dirty bits related to is_drawing_points/lines.

calculate_attr_overrides() uses is_drawing_points(), which depends
on tessellation and geometry program state, as well as polygon state.

v2: Add missing _NEW_POLYGON as well.  Caught by Iago Toral.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>

nvc0: remove an attempt at uploading all IMMD into a CB

This has never been used because info->immd.bufSize is always 0
and anyways this is an experimental code which has never been
completed.

This gets rid of some unused code in the program validation process.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

nv50: remove unused nv50_program::immd_size field

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

nv30: set usage to staging so that the buffer is allocated in GART

The code a few lines below expects to migrate the bo in question to
VRAM. Since we're filling the initial data via CPU, it's more efficient
to create the temporary buffer in GART. There is no "push" method
implemented, otherwise we'd use that instead.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: mesa-stable@lists.freedesktop.org

egl/x11_dri3: provide an authentication function

To support WL_bind_wayland_display an authentication function needs to be
provided but this was not being done for this platform as it's not strictly
necessary. However, as this isn't an optional function there's the potential
for a segfault to occur if authentication is mistakenly performed. Protect
against this by providing a function that prints an error.

Signed-off-by: Frank Binns <frank.binns@imgtec.com>
Reviewed-by: Axel Davy <axel.davy@ens.fr>

egl/x11_dri3: disable WL_bind_wayland_display for devices without render nodes

Up until now, DRI3 was only used for devices that have render nodes, unless
overridden via an environment variable, with it falling back to DRI2 otherwise.
This limitation was there in order to support WL_bind_wayland_display as it
requires client opened device node fds to be authenticated, which isn't possible
when using DRI3. This is an unfortunate compromise as DRI3 provides security
benefits over DRI2.

Instead, allow DRI3 to be used for devices without render nodes but don't
advertise WL_bind_wayland_display in this case. Applications that need this
extension can still be run by disabling DRI3 support via the LIBGL_DRI3_DISABLE
environment variable.

Signed-off-by: Frank Binns <frank.binns@imgtec.com>
Reviewed-by: Axel Davy <axel.davy@ens.fr>

scons: Fix MinGW cross compilation.

The generated GLSL header files were only being built for the host
platform, and not the target platform.

Trivial.

nv30: only bail on color/depth bpp mismatch when surfaces are swizzled

The actual restriction is a little weaker than I originally thought. See
https://bugs.freedesktop.org/show_bug.cgi?id=92306#c17 for the
suggestion. This also explain why things weren't *always* failing
before, only sometimes. We will allocate a non-swizzled depth buffer for
NPOT winsys buffer sizes, which they almost always are.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Cc: mesa-stable@lists.freedesktop.org

glsl: Handle patch qualifier on interface blocks.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

i965: enable OES_primitive_bounding_box with the no-op implementation

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Matt Turner <mattst88@gmail.com>

st/mesa: provide the null implementation of bounding box outputs in tcs

Until hardware appears (in a gallium driver) that can make use of the
TCS-outputted gl_BoundingBox, we just request that the variable gets
assigned as a regular patch variable.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

glsl: add gl_BoundingBox and associated varying slots

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

mesa: add support for GL_PRIMITIVE_BOUNDING_BOX storage and query

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

mesa: add scaffolding for OES/EXT_primitive_bounding_box

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>

docs: add GL_OES_viewport_array to features

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>

aubinator: fix if indentation and add brackets to multiline body

Fixes misleading indentation warning in gcc.

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

i965/fs: Assert that the number of color targets is one when dual-source blend is enabled.

Requested by Anuj during review of
4a87e4ade778e56d43333c65a58752b15a00ce69, adding as follow-up since it
led to assertion failures due to various GLSL bugs that should be
fixed now.

glsl: Fix gl_program::OutputsWritten computation for dual-source blending.

In the fragment shader OutputsWritten is a bitset of FRAG_RESULT_*
enumerants, which represent the location of each color output written
by the shader.  The secondary and primary color outputs of a given
render target using dual-source blending have the same location, so
the 'idx' computation below will give the wrong bit as result if the
'var->data.index' term is non-zero -- E.g. if the shader writes the
primary and secondary colors of the FRAG_RESULT_COLOR output,
ir_set_program_inouts will think that the shader writes both
FRAG_RESULT_COLOR and FRAG_RESULT_SAMPLE_MASK, which is just bogus.

That would cause the brw_wm_prog_key::nr_color_regions computation
done in the i965 driver during fragment shader precompilation to be
wrong, which currently leads to unnecessary recompilation of shaders
that use dual-source blending, and triggers an assertion failure in
fs_visitor::emit_fb_writes() on my i965-fb-fetch branch.

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

glsl: Fix incorrect hard-coded location of the gl_SecondaryFragColorEXT built-in.

gl_SecondaryFragColorEXT should have the same location as gl_FragColor
for the secondary fragment color to be replicated to all fragment
outputs.  The incorrect location of gl_SecondaryFragColorEXT would
cause the linker to mark both FRAG_RESULT_COLOR and FRAG_RESULT_DATA0
as being written to, which isn't allowed by the spec and would
ultimately lead to an assertion failure in
fs_visitor::emit_fb_writes() on my i965-fb-fetch branch.

This should also fix the code below for multiple dual-source-blended
render targets, which no driver currently supports but we have plans
to enable eventually in the i965 driver (the comment saying that no
hardware will ever support it seems rather hilarious).

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

st/glsl_to_tgsi: Use SecondaryOutputsWritten to determine dual-source fragment outputs.

Currently the mesa state tracker relies on there being two bits set
per dual-source output in the gl_program::OutputsWritten bitset, but
that only worked due to a GLSL front-end bug that caused it to set the
OutputsWritten bit for both location and location+1 even though at the
GLSL level the primary and secondary color outputs used for
dual-source blending have the same location.  Fix it by extending
outputMapping[] to 2*FRAG_RESULT_MAX elements in order to represent a
mapping from a (location, index) pair to its TGSI output, which should
also make it slightly easier to add support for dual-source blending
in combination with multiple render targets in the long run.

No Piglit regressions on llvmpipe.

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

glsl: Calculate bitset of secondary outputs written in ir_set_program_inouts.

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>

glsl: Fix typo in comment

Trivial.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>

glsl: Replace most assertions with unreachable()

   text    data     bss     dec     hex filename
7669233  277176   28624 7975033  79b079 i965_dri.so before generated code
7647081  277176   28624 7952881  7959f1 i965_dri.so before this commit
7669289  277176   28624 7975089  79b0b1 i965_dri.so with this commit

Looking at the generated assembly, it appears that some of changes made
in the generated code prevent some loops from being unrolled.  Removing
the default cases (via unreachable()) allows these loops to unroll again.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Refactor handling of horizontal operations

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Use constant_template_horizontal instead of constant_template_horizontal_single_implementation for unops

This changes the "shape" of all the pack and unpack operators, but they
should function the same.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Eliminate constant_template2

constant_template_common can now handle the case where the result type
is different from the input type by using type_signature_iter.  This
changes the "shape" of all the cast-style operators, but they should
function the same.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>

glsl: Eliminate constant_template5

constant_template_common can now handle the case where the result type
is different from the input type by using type_signature_iter.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Eliminate constant_template0

This template is mostly an artefact of the development of the original
patch series and to minimize the differences between the original code
and the generated code.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Eliminate one of the templates for simpler operations

The difference between these two templates were mostly an artefact of
the development of the original patch series and to minimize the
differences between the original code and the generated code.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Use the generated constant expression code

Immediately previous to this patch,

    diff -wud src/glsl/ir_constant_expression.cpp \
              src/glsl/ir_expression_operation_constant.h

should be "minimal."

v3: With much help from José Fonseca, fix the SCons build.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Generate code for constant ir_triop_csel expressions

v2: 'for (a, b) in d' => 'for a, b in d'.  Suggested by Dylan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant ir_triop_lrp expressions

v2: 'for (a, b) in d' => 'for a, b in d'.  Suggested by Dylan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant ir_quadop_vector expressions

v2: 'for (a, b) in d' => 'for a, b in d'.  Suggested by Dylan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant ir_quadop_bitfield_insert expressions

v2: 'for (a, b) in d' => 'for a, b in d'.  Suggested by Dylan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant ir_triop_vector_insert expressions

v2: 'for (a, b) in d' => 'for a, b in d'.  Suggested by Dylan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant ir_binop_vector_extract expressions

v2: 'for (a, b) in d' => 'for a, b in d'.  Suggested by Dylan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant ir_binop_mul expressions

v2: 'for (a, b) in d' => 'for a, b in d'.  Suggested by Dylan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant ir_triop_fma and ir_triop_bitfield_extract expressions

ir_triop_bitfield_extract is a little weird because the second and third
operand and aways int, so they may differ in type from the first
operand.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant ir_binop_dot expressions

v2: 'for (a, b) in d' => 'for a, b in d'.  Suggested by Dylan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant ir_binop_lshift and ir_binop_rshift expressions

The code generated is quite different from what was previously used.  I
believe that it is still correct by the GLSL spec, and I believe, due to
C rules about shifts, the behavior will be the same.

Section 5.9 (Expressions) of the GLSL 4.50 spec says:

    The result is undefined if the right operand is negative, or greater
    than or equal to the number of bits in the left expression's base
    type.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant ir_binop_ldexp expressions

ldexp is weird because its two operands have different types.  Add
support for directly specifying the exact signatures of all the possible
variations of an operation.

v2: Use tuple() instead of () for clarity.  Suggested by Dylan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant unary expressions that don't assign the destination

These are operations like the pack functions that have separate
functions that assign multiple outputs from a single input.

v2: Correct the source and destination types.  They were previously
transposed.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for some constant binary expression that are horizontal

Only operations where the implementation is identical code regardless of
type.  The only such operations are ir_binop_all_equal and
ir_binop_any_nequal.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant unary expression that are horizontal

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant expressions that have an output type the differs from the input types

v2: Remove extra int() cast in find_lsb.  Suggested by Matt.  'for (a,
b) in d' => 'for a, b in d'.  Suggested by Dylan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant binary expressions that combine vector and scalar operands

v2: 'for (a, b) in d' => 'for a, b in d'.  Suggested by Dylan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant binary expressions that have one operand type

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant unary expression that have different implementations for each source type

v2: 'for (a, b) in d' => 'for a, b in d'.  Suggested by Dylan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Generate code for constant unary expression that map one type to another

ir_unop_i2b is omitted because its source can either be int or uint.
That makes it special.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Begin generating code for the most basic constant expressions

Unary operations where all of the supported types use the same C
expression to evaluate them.

v2: 'for (a, b) in d' => 'for a, b in d'.  Suggested by Dylan.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Convert tuple into a class

This makes things a little more clear now, and it will make future
changes... possible.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Dylan Baker <dylan@pnwbakers.com>

glsl: Compact a bunch of things onto one line

Even though they are much too long for that.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Sort constant expression handling by IR operand enum value

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Trivial whitespace and punctuation changes

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Sort GLSL type enums in switch-statements in enum order

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Always use correct float types in constant expression handling

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Extract ir_quadop_bitfield_insert implementation to a separate function

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Extract ir_triop_bitfield_extract implementation to a separate function

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Extract ir_binop_ldexp implementation to a separate function

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Use find_msb_uint to implement ir_unop_find_lsb

(X & -X) calculates a value with only the least significant bit of X
set.  Since there is only one bit set, the LSB is the MSB.

v2: Remove extra int() cast.  Suggested by Matt.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Extract ir_unop_find_msb implementation to a separate function

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Extract ir_unop_bitfield_reverse implementation to a separate function

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>

glsl: Use _mesa_bitcount to implement constant ir_unop_bit_count

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>