Commit graph

117 commits

Author SHA1 Message Date
Adam Jackson
10d21d4100 mesa: Enable EXT_shadow_samplers for GLES2
I thought this was just the funny GLES spelling of the extn name, but
there's also some ESSL bits you need to add. Most of which you could
probably yoink from the old Unity glsl-optimizer (which itself yoinked
most of the GLSL compiler from Mesa):

94a9b2959b

Signed-off-by: Adam Jackson <ajax@redhat.com>
Co-authored-by: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>

Acked-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6691>
2024-06-18 14:40:33 +00:00
Timothy Arceri
72fb49516e glsl: add basic params for AMD_gpu_shader_half_float extension
This sets us the basic infrastructure to required to add an
extension.

Acked-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18540>
2024-02-12 13:23:13 +00:00
Caio Oliveira
63ab985511 util: Use an opaque type for linear context
In the linear allocation only the parent (context) can be used
to allocate new children, so let's use an opaque type to identify
the linear context.  This is similar to what's done in GC allocator.

Update the documentation and a couple of function names to
refer to linear context instead of linear parent.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25280>
2023-09-25 17:26:17 +00:00
Caio Oliveira
ea998ddd34 glsl: Annotate _mesa_glsl_error() with PRINTFLIKE
And fix all the errors it found.

Note that for the unsized array error, we will print the
toplevel type -- so that the fact that an inner array is
unsized can be seen.

Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25200>
2023-09-15 00:45:05 +00:00
twisted89
d3e796da6b util/driconf: add workarounds for the Chronicles of Riddick
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24567>
2023-08-24 22:38:56 +00:00
Yonggang Luo
01ddb18427 compiler: use 4 instead ATOMIC_COUNTER_SIZE in glsl_types.h to avoid #include "mesa/main/config.h"
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24824>
2023-08-24 02:54:09 +00:00
Faith Ekstrand
f2f4e811be nir/gl: Move glsl_type::sampler_target() into a helper in its one caller
The new version also doesn't need to worry about arrays of textures
because the caller already takes care of that.

Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24503>
2023-08-08 01:50:05 +00:00
Faith Ekstrand
b89a48e00d Revert "mesa, compiler: Move gl_texture_index to glsl_types.h"
This reverts commit 1b836a52ea.  This
patch, while claiming to decouple things, actually increases coupling
because it leaks two OpenGL state tracker limits and an OpenGL state
tracker fixed binding enum into the entire compiler.  Nothing wants to
know these outside the OpenGL state tracker and the GL-specific compiler
passes.  Put them back where they were.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24491>
2023-08-04 13:14:35 +00:00
Sviatoslav Peleshko
791785c2b4 glsl: Fix yylloc.source propagation in YYLLOC_DEFAULT
Currently, it's always initialized to 0, but we should take the value from
the grouping passed to the macro. This way parser will have the full
location info, and errors originating from it will show the correct
source file number.

Fixes: a0cfe8c4 ("glsl: Fix missing initialization of yylloc.source")
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9229
Signed-off-by: Sviatoslav Peleshko <sviatoslav.peleshko@globallogic.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23966>
2023-07-05 20:22:27 +00:00
Yonggang Luo
1b836a52ea mesa, compiler: Move gl_texture_index to glsl_types.h
This move is done for decouple glsl_types.h from src/mesa/*

This is achieved by move gl_texture_index from src/mesa/main/menums.h to src/compiler/shader_enums.h
And move ATOMIC_COUNTER_SIZE,MAX_VERTEX_STREAMS from src/mesa/main/config.h to src/compiler/shader_enums.h

Move include main/[config|menums].h into glsl/glsl_parser_extras.h from glsl_types.h
As now glsl_types.h should not include headers from src/mesa/*

Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23420>
2023-06-07 00:33:33 +00:00
Yonggang Luo
ab73f717d9 compiler: Move can_implicitly_convert_to helper to glsl module from glsl_types.h
This move is done for decouple glsl_types from glsl_parser_extras

Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23420>
2023-06-07 00:33:33 +00:00
Gert Wollny
762d377292 mesa/glsl: Add support for NV_shader_noperspective_interpolation
With EXT_gpu_shader4 the support is already in place, we just
have to allow it in glsl and expose the extension name.

v2: Check whether the extension is enabled in the shader (Adam Jackson)
v3: Don't check GLES version in lexer (mareko)

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/18460>
2022-09-09 07:22:20 +00:00
Pavel Asyutchenko
959b748038 glsl: add language support for GL_ARM_shader_framebuffer_fetch_depth_stencil
This extension adds built-in variables gl_LastFragDepthARM and gl_LastFragStencilARM
which can be implemented almost the same as gl_LastFragData from color fetch extension.

Signed-off-by: Pavel Asyutchenko <sventeam@yandex.ru>
Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13979>
2022-06-22 04:32:44 +00:00
Qiang Yu
13ffd46a0f glsl: add ARB_sparse_texture_clamp extension
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14488>
2022-02-01 10:28:05 +00:00
Dave Airlie
3868b30fc4 glsl/parser: extract consts/exts/api out of context at start.
This stores these pointers separately. in theory now gl_context
can be made more opaque later, if we split header files ups.

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14437>
2022-01-20 00:20:06 +00:00
Qiang Yu
67b4c88512 glsl: add ARB_sparse_texture2 extension
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Singed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14362>
2022-01-18 16:10:35 +08:00
Timothy Arceri
a73e7305e9 util/driconf: add new ignore_write_to_readonly_var workaround
This forces the GLSL compiler to ignore writes to readonly vars
rather than throwing an error.

Cc: mesa-stable

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11602>
2021-06-29 02:59:28 +00:00
Timothy Arceri
e607205af0 glsl: force_glsl_version to shaders with no defined version
If a shader has no defined version force_glsl_version was
previous ignored and the shader would default to 110. This updates
the code so that those shaders are forced to a new level also.

We reused the existing code to make sure a sensible value is set
for the version.

Cc: mesa-stable

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11602>
2021-06-29 02:59:28 +00:00
Timothy Arceri
ea83fd9124 glsl: drop NMS OpenGL workarounds
No Mans Sky dropped its OpenGL backend on April 16, 2019 in favour
of its Vulkan backend. So here we drop the old OpenGL workarounds.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7362>
2020-11-01 05:57:35 +00:00
Indrajit Kumar Das
40c1f9883e mesa,glsl: add support for GL_NV_shader_atomic_int64
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6708>
2020-09-29 14:24:44 +00:00
Marek Olšák
ca719c6e30 glsl,driconf: add allow_glsl_120_subset_in_110 for SPECviewperf13
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5459>
2020-06-23 09:25:24 +00:00
Dave Airlie
fce02f4020 mesa/gles3: add support for GL_EXT_shader_group_vote
This is the GLES equivalent to ARB_shader_group_vote.

Passes: KHR-GLES31.core.shader_group_vote.*
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5490>
2020-06-16 12:02:21 +10:00
Pierre-Eric Pelloux-Prayer
fa6b22d36a glsl: rework zero initialization
This commit makes zero_init a bitfield of types of variables to zeroinit.

This will allow some flexibility that will be used in the next commit.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4607>
2020-05-05 12:26:02 +02:00
Danylo Piliaiev
8059f206da glsl: rename has_implicit_uint_to_int_conversion to *_int_to_uint_*
There is no uint to int implicit conversion in glsl, this is just
a typo in the name of this function. The correct one would be:
has_implicit_int_to_uint_conversion.

Signed-off-by: Danylo Piliaiev <danylo.piliaiev@globallogic.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4884>
2020-05-05 08:18:14 +00:00
Simon Zeni
51c1c4d95a mesa: enable GL_EXT_draw_instanced for gles2
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3204>
2020-04-23 03:56:03 +00:00
Ilia Mirkin
cc6661bfc8 glsl: add NV_viewport_array2 support
This enables gl_Layer/gl_ViewportIndex when the ext is enabled, as well
as adding the new gl_ViewportMask[] array and viewport_relative layout
qualifier for gl_Layer.

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Acked-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4529>
2020-04-15 20:12:00 -04:00
Ian Romanick
20d34c4ebf mesa: Extension boilerplate for INTEL_shader_integer_functions2
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/767>
2020-01-23 00:18:57 +00:00
Iago Toral Quiroga
c573b50179 glsl: add missing initialization of the location path field
This was apparently missed in 67b32190f3, which added support
for ARB_shading_language_include to #line, including the 'path'
field for the location.

Fixes crashes in CTS with all drivers as they attempt to access
an uninitialized path string during parsing.

Fixes: 67b32190f3 ("glsl: add ARB_shading_language_include support to #line")
Closes: https://gitlab.freedesktop.org/mesa/mesa/issues/2132
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Reviewed-by: Jose Maria Casanova <jmcasanova@igalia.com>
2019-11-21 12:55:15 +01:00
Timothy Arceri
67b32190f3 glsl: add ARB_shading_language_include support to #line
From the ARB_shading_language_include spec:

   "#line must have, after macro substitution, one of the following
    forms:

       #line <line>
       #line <line> <source-string-number>
       #line <line> "<path>"

    where <line> and <source-string-number> are constant integer
    expressions and <path> is a valid string for a path supplied in the
    #include directive. After processing this directive (including its
    new-line), the implementation will behave as if it is compiling at
    line number <line> and source string number <source-string-number>
    or <path> path. Subsequent source strings will be numbered
    sequentially, until another #line directive overrides that
    numbering."

Reviewed-by: Witold Baryluk <witold.baryluk@gmail.com>
2019-11-20 05:05:55 +00:00
Timothy Arceri
35108caa71 glsl: add infrastructure for ARB_shading_language_include
Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Witold Baryluk <witold.baryluk@gmail.com>
2019-11-20 05:05:55 +00:00
Caio Marcelo de Oliveira Filho
c81b912eb7 mesa: Extension boilerplate for EXT_demote_to_helper_invocation
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2019-09-30 12:44:30 -07:00
Lionel Landwerlin
e4da8b9c33 mesa/compiler: rework tear down of builtin/types
The issue we're running into when running CTS is that glsl types are
deleted while builtins depending on them are not.

This happens because on one hand we have glsl types ref counted, but
builtins are not. Instead builtins are destroyed when unloading libGL
or explicitly calling glReleaseShaderCompiler().

This change removes almost entirely any dealing with glsl types
ref/unref by letting the builtins deal with it instead. In turn we
introduce a builtin ref count mechanism. Each GL context takes a
reference on the builtins when compiling a shader for the first time.
It releases the reference when the context is destroyed. It can also
explicitly release those when glReleaseShaderCompiler() is called.

Finally we also take a reference on the glsl types when loading libGL
to avoid recreating glsl types too often.

v2: Ensure we take a reference if we don't have one in link step (Lionel)

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110796
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
2019-08-21 09:44:10 +02:00
Pierre-Eric Pelloux-Prayer
cd45d09226 glsl: handle differences between ARB/EXT versions of shader_image_load_store
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
2019-08-06 17:40:55 -04:00
Paulo Zanoni
d80a74fb99 mesa: extension boilerplate for EXT_texture_shadow_lod
With the help of Sagar, Ian and Ivan.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2019-07-30 10:42:20 -07:00
Caio Marcelo de Oliveira Filho
2cb5907508 glsl: Check order and uniqueness of interlock functions
With this commit all remaining compilation tests in Piglit for
ARB_fragment_shader_interlock will pass.

Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Plamena Manolova <plamena.manolova@intel.com>
2019-06-10 14:29:32 -07:00
Marek Olšák
1a973aa5e1 glsl: apply some 1.30 and other rules to EXT_gpu_shader4 as well
Reviewed-by: Eric Anholt <eric@anholt.net>
2019-04-24 20:45:15 -04:00
Chris Forbes
8740726e46 glsl: add scaffolding for EXT_gpu_shader4
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Reviewed-by: Eric Anholt <eric@anholt.net>
2019-04-24 20:45:15 -04:00
Timothy Arceri
a6b7068ff5 st/mesa/radeonsi: fix race between destruction of types and shader compilation
Commit 624789e370 moved the destruction of types out of atexit() and
made use of a ref count instead. This is useful for avoiding a crash
where drivers such as radeonsi are still compiling in a thread when the app
exits and has not called MakeCurrent to change from the current context.

While the above scenario is technically an app bug we shouldn't crash.
However that change caused another race condition between the shader
compilation tread in radeonsi and context teardown functions.

This patch makes two changes to fix this new problem:

First we explicitly call _mesa_destroy_shader_compiler_types() when destroying
the st context rather than calling it indirectly via _mesa_free_context_data().
We do this as we must call it after st_destroy_context_priv() so that we don't
destory the glsl types before the compilation threads finish.

Next wait for the shader threads to finish in si_destroy_context() this
also means we need to call context destroy before destroying the queues
in si_destroy_screen().

Fixes: 624789e370 ("compiler/glsl: handle case where we have multiple users for types")

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
2019-04-24 10:23:10 +10:00
Tapani Pälli
624789e370 compiler/glsl: handle case where we have multiple users for types
Both Vulkan and OpenGL might be using glsl_types simultaneously or we
can also have multiple concurrent Vulkan instances using glsl_types.
Patch adds a one time init to track number of users and will release
types only when last user calls _glsl_type_singleton_decref().

This change fixes glsl_type memory leaks we have with anv driver.

v2: reuse hash_mutex, cleanup, apply fix also to radv driver and
    rename helper functions (Jason)

v3: move init, destroy to happen on GL context init and destroy

Signed-off-by: Tapani Pälli <tapani.palli@intel.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
2019-04-16 12:58:00 +03:00
Rhys Perry
082d180a22 mesa, glsl: add support for EXT_shader_image_load_formatted
v3: rebase

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com> (v2)
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
2019-04-15 16:18:07 -04:00
Caio Marcelo de Oliveira Filho
3c5ddaeacd glsl: Parse and propagate derivative_group to shader_info
NV_compute_shader_derivatives allow selecting between two possible
arrangements (quads and linear) when calculating derivatives and
certain subgroup operations in case of Vulkan.  So parse and propagate
those up to shader_info.h.

v2: Do not fail when ARB_compute_variable_group_size is being used,
    since we are still clarifying what is the right thing to do here.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
2019-04-08 19:29:32 -07:00
Caio Marcelo de Oliveira Filho
163655b33e mesa: Extension boilerplate for NV_compute_shader_derivatives
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
2019-04-08 19:29:32 -07:00
Gert Wollny
3214f20914 mesa: Expose EXT_texture_query_lod and add support for its use shaders
EXT_texture_query_lod provides the same functionality for GLES like
the ARB extension with the same name for GL.

v2: Set ES 3.0 as minimum GLES version as required by the extension

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2019-03-03 21:50:42 +01:00
Marek Olšák
1660f3aa05 mesa: expose AMD_texture_texture4
because the closed driver exposes it. Tested by piglit.

Reviewed-by: Ilia Mirkin <imirkin@alum.mit.edu>
2018-12-04 15:33:29 -05:00
Matt Turner
017199d2d2 mesa: Revert INTEL_fragment_shader_ordering support
This extension is not properly tested (testing for
GL_ARB_fragment_shader_interlock is not sufficient), and since this was
noted in review on August 28th no tests have been sent.

Revert "i965: Add INTEL_fragment_shader_ordering support."
Revert "mesa: Add GL/GLSL plumbing for INTEL_fragment_shader_ordering"

This reverts commit 03ecec9ed2.
This reverts commit 119435c877.

Cc: mesa-stable@lists.freedesktop.org
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Eric Anholt <eric@anholt.net>
2018-12-03 15:37:37 -08:00
Ian Romanick
c5a4c26450 glsl: Add pragma to disable all warnings
Use #pragma warning(off) and #pragma warning(on) to disable or enable
all warnings.  This is a big hammer.  If we ever need a smaller hammer,
we can enhance this functionality.

There is one lame thing about this.  Because we parse everything, create
an AST, then convert the AST to GLSL IR, we have to treat the #pragma
like a statment.  This means that you can't do something like

'    void
'    #pragma warning(off)
'    __foo
'    #pragma warning(on)
'    (float param0);

Fixing that would, as far as I can tell, require a huge amount of work.

I did try just handling the #pragma during parsing (like we do for
state for the whole shader.

v2: Fix the #pragma lines in the commit message that git-commit ate.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
2018-11-08 11:00:00 -08:00
Erik Faye-Lund
6df922f438 mesa/glsl: add support for EXT_shader_implicit_conversions
EXT_shader_implicit_conversions adds support for implicit conversions
for GLES 3.1 and above.

This is essentially a subset of ARB_gpu_shader5, and augments
OES_gpu_shader5.

Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
2018-11-02 11:10:36 +01:00
Erik Faye-Lund
e975c5b785 glsl: add has_implicit_uint_to_int_conversion()-helper
This makes the code a bit easier to read, as well as reduces repetition,
especially when we add support for EXT_shader_implicit_conversions.

Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
2018-11-02 11:10:36 +01:00
Erik Faye-Lund
12f001f013 glsl: add has_implicit_conversions()-helper
This makes the code a bit easier to read, as well as will reduce
repetition when we add support for EXT_shader_implicit_conversions.

Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
2018-11-02 11:10:36 +01:00
Timothy Arceri
9ce7d79cdc glsl: add a mechanism to allow layout qualifiers on function params
The spec is quite clear this is not allowed:

    From Section 4.4. (Layout Qualifiers) of the GLSL 4.60 spec:

       "Layout qualifiers can appear in several forms of declaration.
       They can appear as part of an interface block definition or
       block member, as shown in the grammar in the previous section.
       They can also appear with just an interface-qualifier to establish
       layouts of other declarations made with that qualifier:

          layout-qualifier interface-qualifier ;

       Or, they can appear with an individual variable declared with
       an interface qualifier:

          layout-qualifier interface-qualifier declaration ;"

    From Section 4.10 (Memory Qualifiers) of the GLSL 4.60 spec:

       "Layout qualifiers cannot be used on formal function parameters,
       and layout qualification is not included in parameter matching."

However on the Nvidia binary driver they actually fail to compile
if image function params don't have a layout qualifier. This results
in applications such as No Mans Sky using layout qualifiers on params.

I've submitted a CTS test to expose this problem in the Nvidia driver
but until that is resolved this patch will help Mesa drivers work
around the issue.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
2018-08-30 09:54:40 +10:00