[Bug 111509] [regression][bisected] piglit.spec.ext_image_dma_buf_import.ext_image_dma_buf_import-export fails on iris

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111509

            Bug ID: 111509
           Summary: [regression][bisected]
                    piglit.spec.ext_image_dma_buf_import.ext_image_dma_buf
                    _import-export fails on iris
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Keywords: bisected, regression
          Severity: not set
          Priority: not set
         Component: Drivers/Gallium/Iris
          Assignee: michael.blumenkrantz at gmail.com
          Reporter: clayton.a.craft at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org

This test fails on all platforms supported by iris.

stdout from test:
    planes mismatch, got 1 expected 2


Bisected to this commit:


commit 7404833c2e3227b61f53ad93b0e3a1a4d545c05f
Author: Mike Blumenkrantz <michael.blumenkrantz at gmail.com>
Date:   Wed May 29 17:14:32 2019 -0400

    gallium: add handling for YUV planar surfaces

    st/dri:
    this adds a table (similar to the one in i965) which provides
    mappings for turning various planar formats into multiple sampler views.
    whereas only NV12 and IYUV were supported, now many more formats are
    supported here:
    * P0XX
    * YUV4XX
    * YVU4XX
    * AYUV
    * XYUV
    * YUYV
    * UYVY

    the table is used directly to handle image creation, simplifying
    a lot of code and resolving related TODO/FIXME items where workarounds were
    previously in place to manage NV12 and IYUV formats exclusively

    st/mesa:
    the changes here relate to setting up samplers for the planar formats.
    this requires:
    * checking for driver support for all the sampler formats
    * creating the samplers with the corresponding formats and swizzling
    * running nir_lower_tex with the appropriate options to trigger the
lowering
      for each plane->sampler

    fixes kwg/mesa#36

    Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>

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