[Bug 101983] [G33] ES2-CTS.functional.shaders.struct.uniform.sampler_nested* regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101983

            Bug ID: 101983
           Summary: [G33]
                    ES2-CTS.functional.shaders.struct.uniform.sampler_nest
                    ed* regression
           Product: Mesa
           Version: 17.2
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: t_arceri at yahoo.com.au
          Reporter: mark.a.janes at intel.com
        QA Contact: intel-3d-bugs at lists.freedesktop.org
                CC: samuel.pitoiset at gmail.com
            Blocks: 101911

Bisected to:
fcbb93e860246375d03f280f927f79d3645a8988
Author:     Timothy Arceri <tarceri at itsqueeze.com>
mesa: stop assigning unused storage for non-bindless opaque types

The storage was once used by get_sampler_uniform_value() but that
was fixed long ago to use the uniform storage assigned by the
linker.

By not assigning storage for images/samplers the constant buffer
for gallium drivers will be reduced which could result in small
perf improvements.

V2: rebase on ARB_bindless_texture
Reviewed-by: Samuel Pitoiset <samuel.pitoiset at gmail.com>

Test output:
ES2-CTS.functional.shaders.struct.uniform.sampler_nested_vertex
Image comparison failed: difference = 12576.9, threshold = 0.05


Referenced Bugs:

https://bugs.freedesktop.org/show_bug.cgi?id=101911
[Bug 101911] [TRACKER] Mesa 17.2 release tracker
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