[PATCH] radeon/vdpau: don't report VDPAU for r300

[Alex Deucher]

On Tue, Oct 14, 2014 at 10:51 AM, David Heidelberger
<david.heidelberger at ixit.cz> wrote:
> I noticed in logs VDPAU support, then I tried compile mesa with vdpau,
> enable it and of course it was useless. Anyway, I'm not alone, when you
> check forums, you'll notice other guys also tried.
>
> If it could be accepted at this moment or re-enabled r300 support it would
> be great.
> As I understood, VDPAU for r300 would support only MPEG2 (not much used
> these days) and Marek marked it as useless. Any comments on that?
>

On chips without UVD, video decode was done using the 3D engine which
pretty much limited it to MPEG2.  It was basically just MC offload.
R3xx-R5xx had robust enough shader ISAs to implement MC offload
directly.  R1xx and R2xx chips had a special MC mode you could enable
in the 3D engine to accelerate MC offload.

Alex

> If there will be r300 vdpau support, I'll update patch to disable it only
> for < r300
>
> David
>
> On 10/14/2014 05:50 AM, Michel Dänzer wrote:
>>
>> On 13.10.2014 01:10, David Heidelberger wrote:
>>>
>>> VDPAU support has been removed for r300 as useless, but message in
>>> Xorg.log remained.
>>>
>>> (II) RADEON(0): [DRI2] VDPAU driver: r300
>>>
>>> Remove this message to prevent confusion.
>>
>>
>> I don't really see the problem with keeping it. Some people are arguing
>> that Mesa should build r300 VDPAU again for VDPAU presentation support; in
>> that case it would be nice if we didn't have to revert this change again. :)
>>
>> OTOH it might make sense to do this to prevent the message from being
>> printed for r100 and r200, which will most likely never get any kind of
>> VDPAU support.
>>
>>
>
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