Oops, I just realized that I edited my comment on the previous page before seeing that you already replied here
> ...update: finally, I've been able to find another Windows-10 machine, where OSR mode works, so there might have been some OpenGL-specific issues with my hardware
Still, I am quite interested in intercepting the browser window content & copying it as a bitmap, could you give any advice on that?
magreenblatt wrote:Does is help if you run "cefclient --off-screen-rendering-enabled --enable-gpu"?
What kind of GPU do you have? Are your drivers up to date?
This was a pretty old laptop, barely running Windows 10 - in fact it stopped updating about 2 major versions ago... Never had any GPU-related problems there though, so this one was a bit surprising. By the way, --enable-gpu did not help either.
Anyway, I switched to a less outdated machine, and still hope to use an OSR browser window as a workaround for my GTK problem by copying it to a GTK image every N milliseconds - only problem I'm getting lost pretty quickly in all that jumping between processes and Chromium and OpenGL code... Perhaps you could point me to the right direction in the code, or in the CEF or Chromium docs?