[Bug 94142] Blits from GL_TEXTURE_2D_MULTISAMPLE GL_INT or GL_UINT surfaces are not handled correctly

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94142

            Bug ID: 94142
           Summary: Blits from GL_TEXTURE_2D_MULTISAMPLE GL_INT or GL_UINT
                    surfaces are not handled correctly
           Product: Mesa
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: idr at freedesktop.org
          Reporter: idr at freedesktop.org
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Created attachment 121740
  --> https://bugs.freedesktop.org/attachment.cgi?id=121740&action=edit
Assertion that also shows the problem.

For reference, use 'git blame src/mesa/drivers/common/meta_blit.c 9e30d66b'. 
Assume the blit is an MSAA-MSAA blit from a GL_TEXTURE_2D_MULTISAMPLE surface
with base type GL_INT.

Line 294 sets dst_is_msaa true.

Line 313 sets shader_index to BLIT_MSAA_SHADER_2D_MULTISAMPLE_COPY.

Line 339 increments shader_index by 5, and it is now
BLIT_1X_MSAA_SHADER_2D_MULTISAMPLE_ARRAY_RESOLVE.

Similar problems exist for GL_TEXTURE_2D_MULTISAMPLE_ARRAY blits.  You really
only notice this problem is a blit of one kind is followed by a blit of a kind
that conflicts.

We should have piglit tests for this.

I noticed this because, while I was making other changes, I added an assertion
like the one in the attachment.  Surely dst_is_msaa must be false when doing a
resolve blit.  Alas.

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