[Mesa-dev] [Bug 93878] [llvmpipe][softpipe] piglit arb_gpu_shader_fp64-double-gettransformfeedbackvarying regression

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93878

Samuel Iglesias <siglesias at igalia.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Assignee|mesa-dev at lists.freedesktop. |siglesias at igalia.com
                   |org                         |
             Status|NEW                         |ASSIGNED

--- Comment #1 from Samuel Iglesias <siglesias at igalia.com> ---
According to ARB_gpu_shader_fp64 spec, doubles don't support interpolation:

"This extension does not support interpolation of double-precision
values; doubles used as fragment shader inputs must be qualified as
"flat"."

Mesa was assigning the flat qualifier to the doubles
before 781d278 because there was no consumer stage (these programs only
have a vertex shader attached to it) but not because there were doubles. I am
going to write a patch to make explicit the double's case to fix these
regressions.

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