amdgpu: DRI3 with EGL?

Michel Dänzer michel at
Tue Oct 17 15:01:12 UTC 2017

On 17/10/17 04:52 PM, Kai Wasserbäch wrote:
> Dear Michel,
> Michel Dänzer wrote on 17.10.2017 11:20:
>> On 16/10/17 06:21 PM, Kai Wasserbäch wrote:
>>> Michel Dänzer wrote on 16.10.2017 18:05:
>>>> On 16/10/17 05:53 PM, Kai Wasserbäch wrote:
>>>>> [...]
>>>>> But when I look at my Xorg.0.log or the output of eglinfo, I see the following
>>>>> lines:
>>>>> - Xorg.0.log:	[    15.305] (II) glamor: EGL version 1.5 (DRI2):
>>>>> - eglinfo:	EGL version string: 1.5 (DRI2)
>>>>> My understanding was, that amdgpu supports DRI3 for quite some time now and
>>>>> therefore would expect to see something like "EGL version string: 1.5 (DRI3)".
>>>>> What am I missing?
>>>> Only that those messages are about a different "DRI2" than the
>>>> alternative to DRI3.
>>> ah, I was not aware of that. What „DRI“ is meant here then?
>> The API exposed by * to the EGL runtime. It's called "DRI2"
>> because it had to be changed from the original API when DRI2 was
>> introduced. However, that wasn't necessary for DRI3.
> thank you for the explanation! Is there any chance that this could be
> disambiguated? Maybe by adding a „MESA-“ to the string, which is returned as the
> EGL version string. Would a "patch" for this be welcome?

I can't speak on behalf of all Mesa developers who would review it.

Earthling Michel Dänzer               |     
Libre software enthusiast             |             Mesa and X developer

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