[Solved] `--disable-features` breaks offscreen rendering

[Benjamin]

I am trying to make off-screen rendering work in an application where I have :

Code: Select all

    commandLine->AppendSwitchWithValue("disable-features", "NetworkService");


However, it seems this very line breaks the off-screen rendering. If I remove the line or replace "NetworkService" with an empty string ("") everything works.
However, if I replace "NetworkService" by any non-empty string, it does not work.

When it does not work the function OnPaint() is never called, however GetViewRect() is called very often.

[magreenblatt]

What OS and CEF version? Look at the renderer process command line to see what disable-features value is passed by default, and make sure you include that value when manually setting disable-features.

[Czarek]

Does it also break app in cefclient sample application? If you add it in OnBeforeCommandLineProcessing then you should check if there is already a switch with such name and append to its value, as Marshall said. Last time I've used OSR with NetworkService disabled I've used multi threaded message loop, so it's worth checking.

[amaitland]

My understanding was that 3770 was the only branch to support disabling of the network service. You need to disable the viz compositor as well .

NetworkService,VizDisplayCompositor

I'd also suggest disabling the gpu compositor for 3770.

[Benjamin]

Thanks for your help.

Indeed "VizDisplayCompositor" was overwritten when I set "NetworkService".
I changed my code to preserve any value previously set in "disable-features" and it is working.