[Bug 15334] Radeon EXA + Sampling off the edge of REPEAT_NONE sources

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=15334





--- Comment #9 from Roland Scheidegger <sroland at tungstengraphics.com>  2008-04-07 08:42:44 PST ---
(In reply to comment #8)
> > The nifty part is I don't think we need any additional storage. :) Something
> > like
> > 
> > R300_EASY_TX_FORMAT(ZERO, ZERO, ZERO, ONE, X8)
> > 
> > should do the trick I think.
> 
> So the idea is you just point TXOFFSET to some random piece of memory
> (the start of the source texture, say), and it won't matter because
> the data doesn't get used, or maybe doesn't even get read at all?
It won't get used, but I'd suspect it still will get read (so yes the texture
address must be valid for the gpu to read).


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