[Bug 97532] Regression: GLB 2.7 segfaults due to bogus linker precision error (259fc505) on dead variable

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97532

--- Comment #5 from Tapani Pälli <lemody at gmail.com> ---
(In reply to Tapani Pälli from comment #4)
> (In reply to Eero Tamminen from comment #0)
> > Question: Is this linker error relevant/appropriate for GLES v2.x, or should
> > it be generated only for v3.x?
> 
> GLSL ES 1.0.17 states that precision qualifiers for uniforms must match (in
> section 10 Issues) so looks appropriate.

having said that, when linking we should know if uniform was used at all by the
earlier shader stage and could utilize this information to print only warning
in this case .. should first verify if this would be ok by the spec and check
other vendor implementations how they behave in such situation

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