[PATCH] radeon: r200 depth buffers are always tiled

[Alex Deucher]

On Tue, Dec 6, 2011 at 10:20 AM, Dave Airlie <airlied at gmail.com> wrote:
> On Mon, Dec 5, 2011 at 9:13 PM, Roland Scheidegger
> <rscheidegger_lists at hispeed.ch> wrote:
>> Am 05.12.2011 21:51, schrieb Dave Airlie:
>>> On Mon, Dec 5, 2011 at 8:08 PM, Roland Scheidegger
>>> <rscheidegger_lists at hispeed.ch> wrote:
>>>> IIRC this is not only true for r200. Might be true for r300 too, and
>>>> r100 (possibly not rv100) even. Looks good otherwise though.
>>>
>>> Yeah I've been trying to solve it as I find it, I found it definitely
>>> on rv250/rv280, r200 I'm not 100% sure on but will check that.
>>>
>>> my rv100 definitely doesn't need it, but I don't have simple access to
>>> an rv200 or r100 yet, might be able to get an M7 tomorrow.
>>>
>>> Good point for r300->r500 should probably check that, but we should be
>>> enabling tiling on those by default anyways.
>>>
>>
>> I think it might be always tiled for anything below r600 except the
>> rv100 (and the igp-based rv100s). Of course, with different tiling patterns.
>> I'm not 100% sure though, but I remember some differences there between
>> r100 and rv100 (it is possible though just the tiling pattern was
>> different).
>
> Okay so I've tested now on an M7 laptop, and it has always tiled depth,
> r200, rv250 and rv280 are always tiled, and my rv100 has never tiled.
>
> The code in mesa now passes readPixSanity on all the ancient
> crap^Wradeons I can beg or borrow access to.
>
> In theory color tiling should also work fine enabled, and it seems to,
> not seeing and piglit regressions apart from noise between
> tiled/untiled runs.

I think r100 is always tiled as well.  I think it's just rv100 and
rs1xx variants that are linear.

Alex

>
> Dave.
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