[Bug 81405] [SNB+]Piglit/spec_ARB_shader_texture_lod_execution_tex-miplevel-selection_*ProjGradARB_3D fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81405

Iago Toral <itoral at igalia.com> changed:

           What    |Removed                     |Added
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                 CC|                            |itoral at igalia.com

--- Comment #4 from Iago Toral <itoral at igalia.com> ---
I have been looking into this.I don't think this is a bug in the driver, but
simply a precision error when dividing by the projector that leads to selecting
the wrong layer.

I have a patch for piglit to prevent this kind of false positives that I'll
send for review tomorrow.

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