Pixman renderer asserts when using scene graph

[DemiMarie]

When using the scene graph, the Pixman renderer crashes with an assertion failure. The other renderers have not been tested but presumably work.

[bl4ckb0ne]

Could you provide a stacktrace please

[DemiMarie]

q.txt

[bl4ckb0ne]

I don't think you're using the API apropriately. I can run the scene-graph example with WLR_RENDERER=pixman without any issues.

[DemiMarie]

I don't think you're using the API apropriately. I can run the scene-graph example with WLR_RENDERER=pixman without any issues.

That is almost certainly the case, but I have no idea what mistake I am making. Debugging help would be greatly appreciated.

[DemiMarie]

https://github.com/DemiMarie/qubes-wayland/tree/f6823ba4a2845f96910d31ac61e2457cff89c2f2 contains the code I am using.

[bl4ckb0ne]

I see you based your code on tinywl, there's a patch (#3250) that introduces the scene graph api, might be of help.

Otherwise im afraid i can't debug your code, sorry.

[DemiMarie]

@bl4ckb0ne I think my code might have a reentrancy problem: it tries to render from an output commit event, which isn’t standard in wlroots if I understand correctly.

[bl4ckb0ne]

If this is a user problem, I'll close this issue.