[Mesa-dev] [PATCH] r600g: Implement GL_ARB_texture_query_lod

Marek Olšák maraeo at gmail.com
Wed Jul 23 11:25:51 PDT 2014

Sorry, I didn't know you were the author. Feel free to revert the
commit if you like.


On Wed, Jul 23, 2014 at 8:19 PM, Matt Turner <mattst88 at gmail.com> wrote:
> On Wed, Jul 23, 2014 at 10:19 AM, Marek Olšák <maraeo at gmail.com> wrote:
>> I don't see your NAK and Ian gave me an ACK. Besides, what would the
>> tests be good for if you couldn't do any regression testing because
>> they would always fail due to precision issues?
> Please don't top quote.
> Ian reviewed before my comments. Since I'm the author of the tests had
> serious doubts, I don't think his R-b is sufficient. The thread ended
> with you saying you didn't have any explanation for why the hardware
> didn't return the expected values -- that doesn't seem sufficient. The
> patch also seems really suspect because it modifies only some of the
> tests, and does stuff like loosening the tolerance of the nearest
> filtering tests which should only return integral values.
> We've had cases like this in the past that turned out to be driver
> bugs that we wouldn't have discovered if we'd papered over the test
> failures. (In particular a case where you wanted to loosen the
> restrictions of an MSAA test, and after Paul NAK'd it you discovered
> that the sample positions used by r600 were wrong, IIRC)
> I'm okay loosening tolerances if we can come up with reasonable
> explanations why, but that was definitely not the case here.

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