Rendering broken

[osxmidi]

Rendering broken

[lentferj]

Are you using linVST binaries or did you compile yourself?

[osxmidi]

I can't seem to replicate it myself, maybe it's a distro/wine/library problem.

[AxxlForce]

I'm using LinVst-2.2.2-Ubuntu17.10.zip from the releases. Yes I'm using 18.04 but this isn't the problem right?

edit: it only affects the embedded version. just tried standalone: works!

[osxmidi]

Have you tried the Debian Stretch version 2.2.1, which is basically the same as the Ubuntu version, just made on Debian.

I'll take down the Ubuntu version for the time being.

[zdenek-biberle]

I am experiencing the same problem on Arch Linux with LinVst built from source using this AUR package. The standalone version works fine.

I tested it in both Reaper and Carla.

As you say, it's probably a distro/wine/library problem, so that makes it hard to pin down.

[osxmidi]

Might be a library timing thing.

Could try adding

-DEMBEDTHREAD just after -DEMBED in the Makefile

[osxmidi]

I've put up a version with the video delay for Debian/Ubuntu on the Releases page if anyone wants to test it out and let me know.

LinVst-2.2.1-Debian-Stretch-Delay.zip

[zdenek-biberle]

I tried that out and it has sort of worked in Carla. The only problem is that, for some reason, the GUI is floating above everything without a title bar and in some cases (PG-8X) cannot be interacted with.

The situation is still the same in Reaper.

[osxmidi]

I tried out LinVst-2.2.1-Debian-Stretch.zip on Ubuntu Studio 18.04 and I didn't get any display errors.

The problems might be due to certain video drivers/wine combos, maybe something has crept in with video updates for certain cards.

I'm testing on an old Intel video system.

btw What video systems are you all using.

[zdenek-biberle]

So it appears that I've been running wine-staging. I installed regular wine and the GUIs started working fine in Reaper. So I installed wine-staging again and they keep working, even without EMBEDTHREAD. I'm not sure what version I had installed before I did all this, so I don't know if it got fixed by updating to a newer version or something else.

Carla, OTOH, is still the same - nothing shows up without EMBEDTHREAD defined and a floating GUI without a title bar shows up with EMBEDTHREAD defined.

FWIW, I'm running kernel 4.17.5, xorg-server 1.20.0, xf86-video-amdgpu 18.0.1 with R9 290 and wine-staging 3.12

[osxmidi]

Running LinVst inside Carla is not really recommended because then it's a wrapper inside another wrapper and it's likely to produce GUI and other errors.

I'm also not convinced that the Ubuntu Studio 18.04 kernel is that great as I'm having usb detection problems and stability issues with it whereas Ubuntu Studio 17.10 was ok, so I've installed the Liquorix kernel https://liquorix.net/ which works on Debian/Ubuntu and is also low latency.

[zdenek-biberle]

it's a wrapper inside another wrapper

What do you mean? I thought Carla's support for VSTs was native, is that not the case?

[osxmidi]

What happens is that the Linux vst reparents it's window to the window supplied by the host.

As far as the windows dll loaded by LinVst is concerned, LinVst is the host.

If linvst.so (or any Linux vst .so file) is opened by Carla then Carla is the host as far as LinVst is concerned and Carla is supplying a window that LinVst reparents the windows vst window into (which is a wine window) and at the same time Carla is between the DAW and LinVst as Carla was loaded by the DAW host (LinVst sees Carla as it's host) so LinVst (and the windows vst) needs to go through Carla to get to the DAW host and the DAW host needs to go through Carla to get to LinVst (and the windows vst).

Basically it just complicates things and things like GUI issues might happen.

[zdenek-biberle]

I see what you mean, though I've been using Carla standalone.

Anyway, it seems that I have spoken too son about LinVst in Reaper working, because it seems like it has stopped working again, with or without EMBEDTHREAD. Not sure what happened - I haven't done much to the system, just updated a couple of packages.