[Bug 100307] [SKL+] isl: The CCS buffer size is seemingly too small

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100307

            Bug ID: 100307
           Summary: [SKL+] isl: The CCS buffer size is seemingly too small
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/Vulkan/intel
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: nanleychery at gmail.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org
                CC: chadversary at chromium.org, jason at jlekstrand.net,
                    topi.pohjolainen at intel.com

I have a branch [1] that turns on CCS_D for transfer operations. The final
enabling commit causes 3/4 tests in the following group to fail SKL+: 

dEQP-VK.memory.pipeline_barrier.all_device.*

The failures seem to occur because the calculated size of the CCS buffer is too
small. At BindImage time we perform a memset on the buffer to put CCS in the
resolved state. It seems that we aren't reaching the parts of the CCS that are
being sampled from in the above tests. Enlarging the size fixes this issue.

1: https://cgit.freedesktop.org/~nchery/mesa/log/?h=ccs-layouts/1-ccsd-layout

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