[Bug 61349] [r300g, bisected] piglit rgtc-teximage-01 fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=61349

--- Comment #2 from Pavel Ondračka <pavel.ondracka at email.cz> ---
(In reply to comment #1)
> RGTC1 texturing uses only 4 bits of precision in R500, which can cause some
> piglit failures. If you run the test, you'll see how the precision affects
> the filtered texture. If it's not completely wrong, let's just say this is a
> hardware limitation.

Yeah, the pictures before and after patch looks almost similar, so probably
indeed a precision bug, dunno why it passed before though.

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