disable compositing in cef

[videoaudio]

Hi,

I am trying to disable the video compositing & rendering of images in cef (which is running in offscreen rendering mode) but keeping intact of all other features of cef as is. I am hoping not compositing anything will give cpu & memory savings (usecase is little different, I am trying to run cef based app on which there is no display facility)

To achieve this I return 0x0 sized CefRect in CefRenderHandler::GetViewRect() and CefRenderHandler::OnPaint() will not be called.

Is this the right way to achieve this?

[magreenblatt]

What OS and CEF version? If you specify a 0x0 view rect then nothing will be rendered. If you don't want rendering then what specifically are you using the browser for?

[videoaudio]

Thanks for the reply.

Os: Ubuntu (64bit)
Cef version: 2454

I am trying to optimise cef's memory & cpu usage if my display device is powered off, but rest of the system is still running.

[amaitland]

You can use `CefBrowserHost->WasHidden(true)` to temporarily disable rendering.

apidocs3/projects/%28default%29/CefBrowserHost.html#WasHidden%28bool%29

[videoaudio]

I tried with browserObject->GetHost()->WasHidden(true); in GetViewRect() callback and it helped.
Setting cefRectangle to 0x0 in CefRenderHandler::GetViewRect() is also serving the purpose.

As of now I am using both of the above ways to make sure there is compositing done when display is off.

Thanks a lot.