vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
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49 lines
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Application Issues
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==================
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This page documents known issues with some OpenGL applications.
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Topogun
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-------
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`Topogun <https://www.topogun.com/>`__ for Linux (version 2, at least)
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creates a GLX visual without requesting a depth buffer. This causes bad
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rendering if the OpenGL driver happens to choose a visual without a
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depth buffer.
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Mesa 9.1.2 and later (will) support a DRI configuration option to work
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around this issue. Using the
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`driconf <https://dri.freedesktop.org/wiki/DriConf>`__ tool, set the
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"Create all visuals with a depth buffer" option before running Topogun.
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Then, all GLX visuals will be created with a depth buffer.
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Old OpenGL games
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----------------
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Some old OpenGL games (approx. ten years or older) may crash during
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start-up because of an extension string buffer-overflow problem.
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The problem is a modern OpenGL driver will return a very long string for
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the ``glGetString(GL_EXTENSIONS)`` query and if the application naively
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copies the string into a fixed-size buffer it can overflow the buffer
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and crash the application.
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The work-around is to set the ``MESA_EXTENSION_MAX_YEAR`` environment
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variable to the approximate release year of the game. This will cause
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the ``glGetString(GL_EXTENSIONS)`` query to only report extensions older
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than the given year.
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For example, if the game was released in 2001, do
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.. code-block:: sh
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export MESA_EXTENSION_MAX_YEAR=2001
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before running the game.
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Viewperf
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--------
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See the :doc:`Viewperf issues <viewperf>` page for a detailed list of
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Viewperf issues.
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