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Pavel Ondračka bc9b2f3781 r300: don't try to use inline constants instead of constant swizzles
It doesn't make sense and was not working anyway. This was spotted
by Filip Gawin in https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13978
however the fix there was IMO just papering over the problem.

I don't believe that this could manifest as a real issues, because
when all of the swizzles were constant the file would be set to
RC_FILE_NONE already. So in theory this could lead to an issue only
in the close to impossible circumstance that the out of bounds memory
read by constant->u.Immediate[swz] would end with the same exact value
as another inlineable constant in different channel. However in some
circumstances it would lead to following valgrind warnings:

 Conditional jump or move depends on uninitialised value(s)
    at 0x5D4E690: ieee_754_to_r300_float (radeon_inline_literals.c:61)
    by 0x5D4E690: rc_inline_literals (radeon_inline_literals.c:133)
    by 0x5D3877A: rc_run_compiler_passes (radeon_compiler.c:436)
    by 0x5D38821: rc_run_compiler (radeon_compiler.c:458)
    by 0x5D4AF63: r3xx_compile_fragment_program (r3xx_fragprog.c:139)
    by 0x5D48377: r300_translate_fragment_shader (r300_fs.c:499)
    by 0x5D491B0: r300_pick_fragment_shader (r300_fs.c:601)
    by 0x5D2BFEE: r300_create_fs_state (r300_state.c:1072)
    by 0x57DDC36: st_create_nir_shader (st_program.c:538)
    by 0x57DF10E: st_create_fp_variant (st_program.c:1056)
    by 0x57E057C: st_get_fp_variant (st_program.c:1102)
    by 0x57E0AB1: st_precompile_shader_variant (st_program.c:1287)
    by 0x57E0AB1: st_finalize_program (st_program.c:1333)
    by 0x57CB6F3: st_link_nir (st_glsl_to_nir.cpp:958)

Signed-off-by: Pavel Ondračka <pavel.ondracka@gmail.com>
Reviewed-by: Filip Gawin <filip@gawin.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16657>
2022-06-05 21:38:36 +00:00
.gitlab/issue_templates issue_templates/Bug Report: Rename master branch to main 2021-05-05 12:20:11 -07:00
.gitlab-ci ci: disable unit tests 2022-06-03 23:02:22 +00:00
android gallium/swr: Remove common code and build options 2021-12-06 23:37:50 +00:00
bin bin: Add a script for filtering/sorting refcount logs 2022-05-02 16:58:20 +00:00
build-support configure: commit test files 2017-10-16 16:32:43 -07:00
docs gallium: remove PIPE_SHADER_CAP_MAX_UNROLL_ITERATIONS_HINT CAP 2022-06-04 16:11:49 +00:00
include include: drop c11_compat.h 2022-06-02 13:09:16 +00:00
src r300: don't try to use inline constants instead of constant swizzles 2022-06-05 21:38:36 +00:00
subprojects meson: Update libelf wrap for Windows 2021-11-12 09:46:10 +00:00
.dir-locals.el dir-locals.el: Adds White Space support 2016-11-14 19:17:49 +02:00
.editorconfig editorconfig: remove pl-rule 2022-06-01 09:08:13 +00:00
.gitattributes Add new rules to .gitattributes 2022-01-19 15:17:17 +00:00
.gitignore intel/tools: Add unit tests for assembler 2019-05-07 14:33:48 -07:00
.gitlab-ci.yml CI: Re-enable Windows builds 2022-05-31 18:32:59 +00:00
.mailmap .mailmap: Switch Jason Ekstrand to @collabora.com 2022-01-26 20:08:31 +00:00
.travis.yml travis: Download XQuartz from GitHub. 2021-05-29 10:25:16 +00:00
CODEOWNERS ci: add Broadcom CI maintainer 2022-04-12 10:42:31 +00:00
meson.build meson: Use a C99 STDC_VERSION for flex 2022-06-03 15:13:10 +00:00
meson_options.txt meson: Add build option for gallium-d3d12-video feature 2022-05-24 16:36:31 +00:00
README.rst docs: promote #dri-devel on oftc over freenode 2021-05-24 09:21:48 +00:00
VERSION VERSION: bump to 22.2-devel for next cycle 2022-04-13 23:40:25 +00:00

`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library
======================================================


Source
------

This repository lives at https://gitlab.freedesktop.org/mesa/mesa.
Other repositories are likely forks, and code found there is not supported.


Build & install
---------------

You can find more information in our documentation (`docs/install.rst
<https://mesa3d.org/install.html>`_), but the recommended way is to use
Meson (`docs/meson.rst <https://mesa3d.org/meson.html>`_):

.. code-block:: sh

  $ mkdir build
  $ cd build
  $ meson ..
  $ sudo ninja install


Support
-------

Many Mesa devs hang on IRC; if you're not sure which channel is
appropriate, you should ask your question on `OFTC's #dri-devel
<irc://irc.oftc.net/dri-devel>`_, someone will redirect you if
necessary.
Remember that not everyone is in the same timezone as you, so it might
take a while before someone qualified sees your question.
To figure out who you're talking to, or which nick to ping for your
question, check out `Who's Who on IRC
<https://dri.freedesktop.org/wiki/WhosWho/>`_.

The next best option is to ask your question in an email to the
mailing lists: `mesa-dev\@lists.freedesktop.org
<https://lists.freedesktop.org/mailman/listinfo/mesa-dev>`_


Bug reports
-----------

If you think something isn't working properly, please file a bug report
(`docs/bugs.rst <https://mesa3d.org/bugs.html>`_).


Contributing
------------

Contributions are welcome, and step-by-step instructions can be found in our
documentation (`docs/submittingpatches.rst
<https://mesa3d.org/submittingpatches.html>`_).

Note that Mesa uses gitlab for patches submission, review and discussions.