Re: How to disable accellerated WebGL renderer in firefox

[mlh%goathill.org@localhost (MLH)]

Rhialto wrote:
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> On Wed 12 Aug 2026 at 13:44:02 -0400, MLH wrote:
> > I'm running NetBSD 11.99.6 amd64 Sat Jul 11 13:21:32 EDT 2026 with
> > an HD5450 and see the same results with https://webglreport.com/
> > but it doesn't crash for me.
> 
> I wanted to do some tests on my test box (same graphics hardware, Radeon
> HD 5450) to see if running "xcompmgr" made a difference. But now Firefox
> is back to using "llvmpipe" according to the WebGL Report page. Whether
> I'm running xcompmgr or not. On my "real" box it still detects "
> Radeon HD 3200 Graphics, or similar", even if I un-check the preference
> "Use hardware accelleration when available". I am more and more confused...

Interesting...
$ xcompmgr -c
 then start FreeCAD:
error 3: BadWindow (invalid Window parameter) request 15 minor 0 serial 10269
error 3: BadWindow (invalid Window parameter) request 20 minor 0 serial 10270
error 3: BadWindow (invalid Window parameter) request 15 minor 0 serial 10271
error 3: BadWindow (invalid Window parameter) request 20 minor 0 serial 10272
error 3: BadWindow (invalid Window parameter) request 15 minor 0 serial 10273
error 3: BadWindow (invalid Window parameter) request 20 minor 0 serial 10274
error 3: BadWindow (invalid Window parameter) request 15 minor 0 serial 10275
error 3: BadWindow (invalid Window parameter) request 20 minor 0 serial 10276
error 3: BadWindow (invalid Window parameter) request 15 minor 0 serial 10277
error 3: BadWindow (invalid Window parameter) request 2 minor 0 serial 10278
error 3: BadWindow (invalid Window parameter) request 20 minor 0 serial 10279
error 3: BadWindow (invalid Window parameter) request 2 minor 0 serial 10332
error 3: BadWindow (invalid Window parameter) request 20 minor 0 serial 10333
error 3: BadWindow (invalid Window parameter) request 143 minor 6 serial 10484
error 9: BadDrawable (invalid Pixmap or Window parameter) request 140 minor 4 serial 10485
error 4: BadPixmap (invalid Pixmap parameter) request 54 minor 0 serial 10563

Tried kicad with xcompmgr on and the computer locked up. 

> xcompmgr seems to be buggy by the way. Quite often it leaves large
> rectangles on the screen with some old content, on top of everything
> else.

I didn't see any of that with the different modes I tried.

> > I do have problems with some trash in
> > the window with firefox and a lot with wip/freecad, cad/kicad and
> > a few other programs since netbsd 10 on though.
> 
> I did have trouble with wip/golly on the Intel hardware (also with
> emulators/vice if you compile it for SDL2 instead of gtk3). Both didn't
> draw their "main" output area. With 11, golly seems to work again.
> (I don't have an sdl2-vice at hand to test right now)

FreeCAD often starts up with a blank window. I select about where
the File menu is and the dropdown opens up and from there the window
shows up. Also interesting, it appears that displaying text is what
causes trash in the window. If I hover the mouse in the object
drawing area, the window mostly cleans up but if I hover over areas
with text, trash is drawn all over again.

> 
> -Olaf.
> -- 
> ___ Olaf 'Rhialto' Seibert                            <rhialto/at/falu.nl>
> \X/ There is no AI. There is just someone else's work.           --I. Rose
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