debcrafters-packages team mailing list archive

[Julian Andres Klode <2111265@xxxxxxxxxxxxxxxxxx>]

Resetting the verification tag for noble as the described test execution
does not address the steps of the test plan. In particular, it's not
clear which drivers have been tested (has swrast been tested? I guess
radeonsi was), and playing video does not seem relevant to the bug in
the first place since it's about shader compilation, I'd expect
extensive OpenGL testing.

Please also keep in mind that verifying noble doesn't get you anything
on its own: plucky also needs to be verified, as plucky needs to be
released before noble can be released.

** Tags removed: verification-done-noble
** Tags added: verification-needed-noble

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Debcrafters packages, which is subscribed to mesa in Ubuntu.
https://bugs.launchpad.net/bugs/2111265

Title:
  migrate mesa to llvm 20.1.2 or newer

Status in llvm-toolchain-20 package in Ubuntu:
  Invalid
Status in mesa package in Ubuntu:
  Fix Released
Status in spirv-llvm-translator-20 package in Ubuntu:
  Invalid
Status in llvm-toolchain-20 source package in Noble:
  Fix Committed
Status in mesa source package in Noble:
  Fix Committed
Status in spirv-llvm-translator-20 source package in Noble:
  Fix Committed
Status in llvm-toolchain-20 source package in Plucky:
  Fix Released
Status in mesa source package in Plucky:
  Fix Committed
Status in spirv-llvm-translator-20 source package in Plucky:
  Fix Released

Bug description:
  [Impact]

  This is needed for some new AMD RDNA4 platforms that require the newer
  llvm for runtime shader compilation.

  Skipping oracular, as it is going to be EOL soon.

  Note that llvm-toolchain-20 needs to be built twice on noble, first
  without llvm-spirv-20 which doesn't exist yet, and then after spirv-
  llvm-translator-20 has built, it's built a second time *with* llvm-
  spirv-20 which is needed to build libclc-20 which Mesa needs.

  [Test case]

  Install updates, check that drivers that require llvm still work,
  including swrast (llvmpipe), radeonsi:

  - check that the desktop is still using hw acceleration and hasn't fallen back to swrast/llvmpipe
  - run freely available benchmarks that torture the GPU (Unigine Heaven/Valley/Superposition)
  - run some games from Steam if possible

  
  [Where things could go wrong]

  The new llvm version might result in buggy behaviour with the
  swrast/radeonsi drivers.

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