OpenGL to OpenGL ES change on arm64?

zhangchao at zhangchao at
Mon Jun 6 02:05:37 UTC 2016

Hi All,
We have ARM64 devices used AMD Radeon  Series graphics cards。So,same as x86 we really need a full OpenGL Qt support With ARM64 。

At 2016-06-04 08:48:17, "Steve Langasek" <steve.langasek at> wrote:
>On Sat, Jun 04, 2016 at 02:00:04AM +0200, Matthias Klose wrote:
>> > There are two ways to make a GLES-enabled Qt stack available on arm64; the
>> > armhf way (build Qt exclusively for GLES), or the x86 way (build alternative
>> > stacks for both GL and GLES).
>> > Which we should pursue depends on whether there is a use case for OpenGL Qt
>> > software anywhere on ARM64.
>> > For the phone / embedded GPU case, we have no known chips providing
>> > accelerated OpenGL drivers.
>> > For the server / add-on GPU case, we have no known uses for GUI toolkits -
>> > only CUDA and GPU-accelerated computation.
>> > So from what I know, we should be fine to ship GLES-only Qt on ARM64, and
>> > delete any ARM64 binaries from the archive that require GL-enabled Qt.
>> so why change something, if we know we won't use it?  If we see the need
>> for both stacks, why not keeping the current default, and then go the x86
>> way later?  You seem to propose a third way to do it, defaulting to GLES,
>> and then adding support for GL if needed.  This looks like extra work, and
>> unique to arm64.
>I think you're confused here.  We *are* going to be using the Qt GLES stack,
>for 64-bit ARM phones / devices.  We have an immediate need for GLES-enabled
>Qt because these chips have accelerated GLES drivers, not accelerated GL
>And this is exactly the same thing that we already have on armhf, not a
>"third way".
>Steve Langasek                   Give me a lever long enough and a Free OS
>Debian Developer                   to set it on, and I can move the world.
>Ubuntu Developer                          
>slangasek at                                     vorlon at
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