Bug 97643

works fine on 7970 and mesa-git,llvm-git
vo=opengl-hq:user-shaders="/home/pont/CrossBilateral.glsl"  

http://pastebin.com/6TNTa6ry

(In reply to Iaroslav Andrusyak from comment #1)
> works fine on 7970 and mesa-git,llvm-git
> vo=opengl-hq:user-shaders="/home/pont/CrossBilateral.glsl"  
> 
> http://pastebin.com/6TNTa6ry

I forgot to mention that for crossbilateral to work, cscale must be set to bilinear.

My mpv.conf:

profile=opengl-hq
scale=ewa_lanczossharp
cscale=bilinear
opengl-shaders="~~/shaders/crossbilateral.glsl"
dscale=mitchell
tscale=sinc
interpolation
tscale-radius=2
interpolation-threshold=0.01
scale-radius=3
temporal-dither
dither-depth=8
deband-iterations=2
deband-range=12
correct-downscaling
blend-subtitles
video-sync=display-resample
hwdec=no
framedrop=vo
cache=262144
stop-screensaver=yes

vd-lavc-threads=4

llvm is 3.8.0-r2

still works


vo=opengl-hq:user-shaders="/home/pont/CrossBilateral.glsl":cscale=bilinear:dscale=mitchell:tscale=sinc:tscale-radius=2:interpolation-threshold=0.01:scale-radius=3:dither-depth=8:deband-iterations=2:deband-range=12
video-sync=display-resample
hwdec=no
framedrop=vo
cache=262144
stop-screensaver=yes

vd-lavc-threads=4

http://pastebin.com/neW3rkHA

I don't know then. Is there a way for me to diagnose it myself?

 You can try both mesa and llvm from git, as that is what Iaroslav probably using.

 12.0.1 mesa and llvm 3.8-rc2 does not sound current, even for stable mesa/llvm branches.

Cris, do please try with more recent Mesa + LLVM as well.

If that still crashes, can you provide a backtrace of where mpv crashes? dmesg output from the crash could also give some context.

(In reply to Nicolai Hähnle from comment #6)
> Cris, do please try with more recent Mesa + LLVM as well.
> 
> If that still crashes, can you provide a backtrace of where mpv crashes?
> dmesg output from the crash could also give some context.

I did, I upgraded to llvm-3.9.0 and mesa-git, and the issue went away. Most conservative distros might have a hard time though.

Thanks anyway.

(In reply to Cris from comment #7)
> (In reply to Nicolai Hähnle from comment #6)
> > Cris, do please try with more recent Mesa + LLVM as well.
> > 
> > If that still crashes, can you provide a backtrace of where mpv crashes?
> > dmesg output from the crash could also give some context.
> 
> I did, I upgraded to llvm-3.9.0 and mesa-git, and the issue went away. Most
> conservative distros might have a hard time though.
> 
> Thanks anyway.

Doesn't that mean that a userspace code can crash the kernel, but the most recent version of that code doesn't do it? Ideally, the kernel should be more resilient than that IMHO.

(In reply to almos from comment #8)
> (In reply to Cris from comment #7)
> > (In reply to Nicolai Hähnle from comment #6)
> > > Cris, do please try with more recent Mesa + LLVM as well.
> > > 
> > > If that still crashes, can you provide a backtrace of where mpv crashes?
> > > dmesg output from the crash could also give some context.
> > 
> > I did, I upgraded to llvm-3.9.0 and mesa-git, and the issue went away. Most
> > conservative distros might have a hard time though.
> > 
> > Thanks anyway.
> 
> Doesn't that mean that a userspace code can crash the kernel, but the most
> recent version of that code doesn't do it? Ideally, the kernel should be
> more resilient than that IMHO.

It's crashing now and I'm using -git (llvm, mesa, radeon). When it doesn't, it's unbearably slow. It definitely shouldn't happen.

Can confirm this is no longer happening and the performance is BEARABLE. I still get dropped frames here and there though, which definitely shouldn't be happening.

No longer an issue. Recompiled llvm-git and mesa-git and everything works fine with no frame drops, including lower resolution videos (which were grinding everything to a halt).