Re: amdgpu 4k@120Hz / HDMI 2.1

2025-01-10 Thread Mischa Baars
On Thu, Jan 9, 2025 at 4:08 PM Armin Wolf wrote: > Sadly the HDMI forum only provides the HDMI specification under a special > license which > prohibits implementing it in open source drivers. > > Since membership inside the HDMI forum costs 15000$ annually, i suspect that > the HDMI forum > is

Re: amdgpu 4k@120Hz / HDMI 2.1

2025-01-10 Thread Mischa Baars
On Thu, Jan 9, 2025 at 3:57 PM Michel Dänzer wrote: > That's much lower level than OpenGL. OpenGL implementations can and do > internally use page flipping under the right circumstances, it cannot be > enforced via OpenGL / GLX / EGL APIs though, it's an implementation detail. It is indeed low

Re: amdgpu 4k@120Hz / HDMI 2.1

2025-01-10 Thread Armin Wolf
Am 09.01.25 um 10:19 schrieb Mischa Baars: On Mon, Jan 6, 2025 at 4:30 AM Mario Limonciello 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

Re: amdgpu 4k@120Hz / HDMI 2.1

2025-01-09 Thread Michel Dänzer
On 2025-01-09 12:00, Mischa Baars wrote: > On Mon, Jan 6, 2025 at 4:41 PM Michel Dänzer > mailto:michel.daen...@mailbox.org>> > wrote: > >> I'm sort of a fan of Michael Abrash, as he inspired me to learn >> programming assembly language a long time ago, but in his Graphics >> Programming Black Boo

Re: amdgpu 4k@120Hz / HDMI 2.1

2025-01-09 Thread Mischa Baars
On Mon, Jan 6, 2025 at 4:41 PM Michel Dänzer wrote: > 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 in

Re: amdgpu 4k@120Hz / HDMI 2.1

2025-01-09 Thread Mischa Baars
On Mon, Jan 6, 2025 at 4:30 AM Mario Limonciello 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

Re: amdgpu 4k@120Hz / HDMI 2.1

2025-01-06 Thread Michel Dänzer
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 bufferin

Re: amdgpu 4k@120Hz / HDMI 2.1

2025-01-05 Thread Mario Limonciello
On 12/31/2024 06:42, Mischa Baars wrote: Hi Mario, Although unconfirmed by their website, the rumour goes that the HDMI Forum will release a 2.2 specification somewhere in Januari. Do you think that an open source 2.1 implementation will be allowed soon after? When new specifications are made

Re: amdgpu 4k@120Hz / HDMI 2.1

2024-12-31 Thread Mischa Baars
Hi Mario, Although unconfirmed by their website, the rumour goes that the HDMI Forum will release a 2.2 specification somewhere in Januari. Do you think that an open source 2.1 implementation will be allowed soon after? In the meantime I also checked the framerate synchronization through glxgears