TSC Meeting Notes 2021-11-18

Owned by Cary Phillips
Nov 19, 2021
2 min read

Attendance:

Cary Phillips
Christina Tempelaar-Leitz
John Mertic
Joseph Goldstone
Kimball Thurston
Larry Gritz
Nick Porcino
Peter Hillman
Rod Bogart

Discussion:

  • Follow-up from Richard Shaw’s TAC presentation (Fedora package maintainer):

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    • If we had it to do over again (3.0 release): understand our downstream consumers

    • We should find what versions the standard distributions are on and encourage them to upgrade.

    • Kimball: I did that for v2.4

    • Larry: a good place to start: https://repology.org/project/openexr/versions

    • How do you find who the maintainers are?

    • Kimball: for Ubuntu, go into the package distros, it shows the maintainers

    • Kimball: Sometimes patches are useful/interesting, hard to discover that there are patches.

    • Cary: we should also meet with build engineers at Foundry, SideFX, autodesk.

    • Kimball: should we mutate the reference platform going forward?

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      • Original motivation: encourage everyone to move forward

      • DCC’s are moving forward at different paces

      • Problem with different DCC’s doing things in a different way (with/without namespaces)

      • Don’t know which ones use libraries internally, vs. leading symbols.

  • Outstanding fuzz issues:

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    • Peter: primary outstanding ones are due to running out of memory. Deep allocates memory up front. Can open a deep image with the scanline interface.

    • A small file can allocate a huge amount of memory.

    • The test should take the same steps that pedantically written code should. 

    • Don’t want the test to reject things that are wide.

    • Once it gets beyond a certain size, it pre-allocates.

    • Allocating a huge amount of memory up front might not be faster.

    • Should allocate along the way

  • RgbaInputFile PR

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    • Should the RgbaInput file should be quite limited. You get the yuv2rgb conversion

  • Runpath issue #1204:

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    • Line in OpenEXRSetup.cmake:  “set runpath to ../lib”

    • So the executables have the expected lib 

    • Kimball: sould use tmpsyspath

    • Kimball will take a look

  • Kimball: we should push the global clang-format reformat.

  • Cary: Should rename master to main soon. Will send an announcement to openexr-dev.