Re: amdgpu 4k@120Hz / HDMI 2.1

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On Mon, Jan 6, 2025 at 4:30 AM Mario Limonciello
<mario.limonciello@xxxxxxx> wrote:

> When new specifications are made available it's not like the old one
> suddenly becomes "open", so I don't see any reason that a new
> specification would change anything.

I paid about €3000 for my new PC, including €300 for the graphics card
with HDMI 2.1 output and about €2000 for my new Samsung OLED TV with 4
HDMI 2.1 inputs, and now you are telling me that I will not be able to
utilize them fully because the cable specification has not been made
publicly available?

Did someone forget to pay the people that design the cables? Because
that is what it sounds like. Why does Linux stay behind?

On Mon, Jan 6, 2025 at 4:41 PM Michel Dänzer <michel.daenzer@xxxxxxxxxxx> wrote:
>
> On 2024-12-31 13:42, Mischa Baars wrote:
> >
> > In the meantime I also checked the framerate synchronization through
> > glxgears at different resolutions and framerates. This does function
> > as expected. Although I haven't yet inspected the glxgears source
> > codes in detail, the OpenGL double buffering must be functional up to
> > some level. This means that the problem must be confined to GTK and
> > the GtkGLArea widget. Using GDK_BACKEND=x11 I do get a double buffered
> > context, but the default buffer does not alternate between GL_FRONT
> > and GL_BACK.
>
> Yeah, that's not how double-buffering works in GL. The draw buffer is always GL_BACK, SwapBuffers doesn't affect that (it just may internally change which actual buffer GL_BACK refers to).
>
> I don't see more context about the issue you're investigating, any pointers?
>
>
> --
> Earthling Michel Dänzer       \        GNOME / Xwayland / Mesa developer
> https://redhat.com             \               Libre software enthusiast




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