Re: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-28 Thread Rohan Garg
Hey > Here I agree with Luke Kenneth Casson Leighton’s opinion [1]. > > I think we should aim to provide the best possible experience with the free > software ecosystem. The experience with proprietary drivers should be the > second priority, if priority at all. > AFAIU by building Qt with GLES

Re: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-27 Thread Paul Wise
On Wed, Nov 28, 2018 at 7:30 AM Lisandro Damián Nicanor Pérez Meyer wrote: > Just curious: is there any project alive for the PowerVR SGX530 ? There used to be a very brief effort around PowerVR devices but it looks like that has died now. Some of the project site was captured by archive.org and

Re: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-27 Thread Lisandro Damián Nicanor Pérez Meyer
El martes, 27 de noviembre de 2018 17:19:32 -03 Dmitry Shachnev escribió: > Hi Rohan! > > On Tue, Nov 27, 2018 at 04:24:43PM +0100, Rohan Garg wrote: > > [...] > > > > I concur here. It was correctly pointed out in another reply that by using > > OpenGL we're specifically catering to software

Re: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-27 Thread Lisandro Damián Nicanor Pérez Meyer
El domingo, 25 de noviembre de 2018 21:18:39 -03 Paul Wise escribió: > On Sun, Nov 25, 2018 at 8:58 PM Lisandro Damián Nicanor Pérez Meyer wrote: > > Both Dmitry and I just learned that the RPI has the VC4 driver which > > enables it to do hardware acceleration for Desktop OpenGL, we must admit >

Re: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-27 Thread Dmitry Shachnev
Hi Rohan! On Tue, Nov 27, 2018 at 04:24:43PM +0100, Rohan Garg wrote: > [...] > > I concur here. It was correctly pointed out in another reply that by using > OpenGL we're specifically catering to software that doesn't support > GLES while making performance worse for mature applications that >

Re: Bug#881333: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-27 Thread Steve Langasek
On Mon, Nov 26, 2018 at 03:39:03PM -0800, Keith Packard wrote: > Steve Langasek writes: > > Long ago I heard rumors of development work on mesa that would allow it to > > function as a proxy library, so that apps would link against libGL as needed > > and the GL implementation would use a

Re: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-27 Thread Rohan Garg
Hey On Mon, Nov 26, 2018 at 12:38 PM Raphael Hertzog wrote: > > Hello Lisandro, > > TLDR: thank you for starting this discussion, it was required as it's not > an easy decision to take as there is no realistic perfect solution, but I > believe you took the wrong decision. Please consider

Re: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-27 Thread Re4son
Hi, On 26/11/18 11:54 pm, Riku Voipio wrote: > On Mon, Nov 26, 2018 at 12:37:57PM +0100, Raphael Hertzog wrote: >> were in the week-end). I was aware of the discussion but did not >> had the time to chime in, yet I was the person who re-opened the bug >> #881333 in the first place. > >> I also

Re: Bug#881333: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-26 Thread Keith Packard
Steve Langasek writes: > Long ago I heard rumors of development work on mesa that would allow it to > function as a proxy library, so that apps would link against libGL as needed > and the GL implementation would use a hardware-accelerated GLES driver where > possible, falling back to software

Re: Bug#881333: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-26 Thread Steve Langasek
On Mon, Nov 26, 2018 at 12:21:25PM -0500, Alan Corey wrote: > Why couldn't you choose QT for Desktop or QT for ES OpenGL when you > compile your program? Supply both libraries? Because this requires providing two separate *stacks* of source packages, one for GL and one for GLES, which from

Re: Bug#881333: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-26 Thread Alan Corey
Why couldn't you choose QT for Desktop or QT for ES OpenGL when you compile your program? Supply both libraries? ES gives an enormous performance boost to little machines that need it, desktop OpenGL is more pretty pictures. On 11/26/18, Lisandro Damián Nicanor Pérez Meyer wrote: > El lunes,

Re: Bug#881333: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-26 Thread Lisandro Damián Nicanor Pérez Meyer
El lunes, 26 de noviembre de 2018 14:21:25 -03 Alan Corey escribió: > Why couldn't you choose QT for Desktop or QT for ES OpenGL when you > compile your program? It's a Qt build-time option. This in an upstream choice, not ours and not up to us to fix. > Supply both libraries? Already answered

Re: Bug#881333: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-26 Thread Lisandro Damián Nicanor Pérez Meyer
El lunes, 26 de noviembre de 2018 08:37:57 -03 Raphael Hertzog escribió: > Hello Lisandro, > > TLDR: thank you for starting this discussion, it was required as it's not > an easy decision to take as there is no realistic perfect solution, Our (team-wide) pleasure. This is something we have been

Re: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-26 Thread Riku Voipio
On Mon, Nov 26, 2018 at 12:37:57PM +0100, Raphael Hertzog wrote: > were in the week-end). I was aware of the discussion but did not > had the time to chime in, yet I was the person who re-opened the bug > #881333 in the first place. > I also invited someone else who is working on a concrete

Re: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-26 Thread Jonas Smedegaard
Quoting Raphael Hertzog (2018-11-26 12:37:57) > Software can be fixed/improved to also work with OpenGL ES. However > hardware, once bought, cannot be fixed to support Desktop OpenGL when > it has been designed for OpenGL ES only. Is some _hardware_ really "designed for OpenGL ES only"? I

Re: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-26 Thread Raphael Hertzog
Hello Lisandro, TLDR: thank you for starting this discussion, it was required as it's not an easy decision to take as there is no realistic perfect solution, but I believe you took the wrong decision. Please consider deferring the decision to the technical committe by seeking his advice (point

Re: Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-25 Thread Paul Wise
On Sun, Nov 25, 2018 at 8:58 PM Lisandro Damián Nicanor Pérez Meyer wrote: > Both Dmitry and I just learned that the RPI has the VC4 driver which enables > it to do hardware acceleration for Desktop OpenGL, we must admit that this is > a game changer in many ways, even if we are talking on just

Qt with GLES on arm64 maintainer's decision - Was:: Upcoming Qt switch to OpenGL ES on arm64

2018-11-25 Thread Lisandro Damián Nicanor Pérez Meyer
Hi everyone! We the Qt maintainers have reached a decision with respect to this topic. We reached debian-devel in order to get an idea of what other fellow Debian users and developers think of this subject. We would *really* like to thank you all for chiming in and discussing this in quite a