Testing The Open-Source "RADV" Radeon Vulkan Driver vs. AMDGPU-PRO

[LinuxID10T]

@lethalwp

Maybe try Kodi and vlc as well. Also vdpau would be interesting...

His patch is just for mplayer to get it to recognize that it is being accelerated. It doesn't work on Kodi or VLC as of right now. The only player which works that I've tried is Windows Media Player, and that definitely doesn't run on Linux. Oddly enough, VLC on Windows will not accelerate decode with DXVA2 either.

[Kano]

@lethalwp

Maybe try Kodi and vlc as well. Also vdpau would be interesting...

[pal666]

Would it then just make more sense to support the RADV driver?

if you will be happier by adding zero developers to radv, then sure, let them add zero developers to radv

[Evil Penguin]

Right... we knew at the start that any IP/Legal review would fail dramatically (and it did)... the work involved rewriting big chunks of the driver, and the driver itself is already much larger because it shares code across multiple OSes and multiple APIs.

Would it then just make more sense to support the RADV driver?
It seems to be off to a really good start.
Sigh, pesky legal BS...

[Mystro256]

Right... we knew at the start that any IP/Legal review would fail dramatically (and it did)... the work involved rewriting big chunks of the driver, and the driver itself is already much larger because it shares code across multiple OSes and multiple APIs.

Does this mean the release is just stalled but is still coming? or do you have no idea/not allowed to say?

[Mystro256]

Those results look really nice! Great work! Thanks Michael for this benchmar.

BTW. I think that you should run benchmarks in fullscreen mode, because in windowed/borderless mode compositor affects performance.

Straight from the article:

When trying Dota 2 with fullscreen mode at various resolutions, the screen basically appeared locked and wouldn't update past the loading screen. But when alt-tabbing out of the game, a few new frames of the game's demo would proceed to appear... Alt-tabbing again, a few more frames. Or if leaving the game minimized so it would be off-screen, the demo would complete but would get just a few frames per second.

I tried enabling/disabling the Steam overlay, switching between the AMDGPU and modesetting DDX drivers, switching from Compiz/Unity to Xfce with/without compositing, and other steps to try to figure out why the screen wouldn't update in the full-screen mode. But the easiest approach for now was just running Dota 2 in windowed mode. When in windowed mode, there were no issues.

[bridgman]

it's not just legal review. somebody has to turn windows vuklan driver to opensourceable form. they have no resources for that, so do not expect they will magically find resources to maintain another driver

Right... we knew at the start that any IP/Legal review would fail dramatically (and it did)... the work involved rewriting big chunks of the driver, and the driver itself is already much larger because it shares code across multiple OSes and multiple APIs.

BTW. I think that you should run benchmarks in fullscreen mode, because in windowed/borderless mode compositor affects performance.

In the article Michael said that the driver wasn't working in fullscreen, so he had to run in windowed mode.

[nadro]

Those results look really nice! Great work! Thanks Michael for this benchmar.

BTW. I think that you should run benchmarks in fullscreen mode, because in windowed/borderless mode compositor affects performance.

[jrch2k8]

Wow. This is impressive. Well done David & Bas!
Do you have plans to backport it to CI and SI?

Well if the GCN 1.0 AMDGPU support lands on 4.9, it should be mostly doable on all GCN able hardware except when you need hardware specific fixes that could take more time

[lethalwp]

Btw. an article about the state of HEVC Main 10 decode would be interesting as vdpauinfo/vainfo show support for it with Polaris GPUs.

For what i've tested, hardware decoding of hevc in main10 in polaris works like a charm, in vaapi. For that i used ffmpeg-git + this homemade patch: http://ffmpeg.org/pipermail/ffmpeg-d...st/197623.html then use mpv with -hwdec=vaapi and opengl renderer.

But i've also noticed some problems when hardware decoding a simple mpeg2 from a dvd on a rx480. That i don't know where the problem is
(bad looking blocks, sometimes even flickering blocks)