In the C23 standard unreachable() is now a predefined function-like
macro in <stddef.h>
See https://android.googlesource.com/platform/bionic/+/HEAD/docs/c23.md#is-now-a-predefined-function_like-macro-in
And this causes build errors when building for C23:
-----------------------------------------------------------------------
In file included from ../src/util/log.h:30,
from ../src/util/log.c:30:
../src/util/macros.h:123:9: warning: "unreachable" redefined
123 | #define unreachable(str) \
| ^~~~~~~~~~~
In file included from ../src/util/macros.h:31:
/usr/lib/gcc/x86_64-linux-gnu/14/include/stddef.h:456:9: note: this is the location of the previous definition
456 | #define unreachable() (__builtin_unreachable ())
| ^~~~~~~~~~~
-----------------------------------------------------------------------
So don't redefine it with the same name, but use the name UNREACHABLE()
to also signify it's a macro.
Using a different name also makes sense because the behavior of the
macro was extending the one of __builtin_unreachable() anyway, and it
also had a different signature, accepting one argument, compared to the
standard unreachable() with no arguments.
This change improves the chances of building mesa with the C23 standard,
which for instance is the default in recent AOSP versions.
All the instances of the macro, including the definition, were updated
with the following command line:
git grep -l '[^_]unreachable(' -- "src/**" | sort | uniq | \
while read file; \
do \
sed -e 's/\([^_]\)unreachable(/\1UNREACHABLE(/g' -i "$file"; \
done && \
sed -e 's/#undef unreachable/#undef UNREACHABLE/g' -i src/intel/isl/isl_aux_info.c
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36437>
The unreachable(str) macro defined in src/util/macros.h is defined to
accept a literal string as an argument.
However the way it checks that the argument is a string literal, by
prepending an empty string where the argument is used, i.e.:
#define unreachabel(str) assert(!"" str)
still allows users to call the macro with no arguments.
This is confusing, so pass an empty string to all invocations of
unreachable() for consistency.
This is done with the following command:
git grep -l '[^_]unreachable();' -- "src/**" | sort | uniq | \
while read file; \
do \
sed -e 's/\([^_]\)unreachable();/\1unreachable("");/g' -i "$file";
done
This should not change the behaviour of the callers of unreachable() in
a meaningful way, but there will be some cosmetic consequence.
The changed invocations will now print:
Assertion `!"" ""' failed.
instead of
Assertion `!""' failed.
But this is also what happens for the invocations that do pass an
argument, for instance `unreachable("Invalid type")` currently prints:
Assertion `!"" "Invalid type"' failed.
So all invocations now also have the same output style.
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36437>
A subsequent change is going to add a macro named UNREACHABLE() to
src/util/macros.h which will conflict with the lexer state name
UNREACHABLE in src/compiler/glsl/glcpp/glcpp-lex.l
Use the name NOT_REACHABLE in glcpp-lex.l instead of UNREACHABLE, just
to avoid the name clash with the future macro.
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36437>
When rasterizer discard is enabled, we need to prevent all rasterization
without affecting vertex processing or transform feedback.
Emulate this by setting a zero-sized scissor rectangle (0,0,0,0) which
effectively clips all fragments while allowing the vertex shader to
continue running normally. This matches the behavior
implemented by the binary blob.
Passes all dEQP-GLES3.functional.rasterizer_discard.* on GC7000.
Signed-off-by: Christian Gmeiner <cgmeiner@igalia.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36373>
The private BO can get removed due to WSI aliasing and that breaks the
submission code (expecting one).
Delay the registration on the device to when the image actually gets
bound and there is a private BO.
Fixes: b21e62b71a ("anv: avoid leaking private binding for aliased wsi image")
Reviewed-by: Yiwei Zhang <zzyiwei@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36474>
Lowering UBO ranges to the const file happens via the preamble on
turnip (all gens) and freedreno (a7xx+). The only exception is the
consts_ubo, which is uploaded to the const file via CP.
Make this more consistent, and remove some special-casing code, by
treating consts_ubo as any other UBO.
Signed-off-by: Job Noorman <jnoorman@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36470>
Collabora's farm 2025-07-31 maintenance will make the following DUTs
offline for a few hours:
- rk3288-veyron-jaq
- sun50i-h6-pine-h64
So let's disable them before it blocks the pipelines.
----
Planned downtime for those DUTs in the farm:
Start: 2025-07-31 08:00 BST
End: 2025-07-31 10:00 BST
Signed-off-by: Guilherme Gallo <guilherme.gallo@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/36480>
Antonio Ospite