Please, indicate the version of the Unity plugin.

NoesisGUI-Unity-3.2.7-Indie

Symbols for the Indie version are available here:

• https://drive.google.com/file/d/1w4X62ysYfIGv3jUtGg1tiQCAdkmmF40I/view?usp=drive_link

Also, a debug version of the runtime can be downloaded at:

• 3.2.7 DEBUG: https://drive.google.com/file/d/1bTglEAVNPiv_Zd5Esb_Vwf_3AZwrRr-b/view?usp=drive_link
• 3.2.7 DEBUG SYMBOLS: https://drive.google.com/file/d/1Y7-Jaj2nyt9bEuEOPBmiZRo6u-MthgEP/view?usp=drive_link

Could you please give it a try to see if we have more information?

Caught fatal signal - signo:11 code:1 errno:0 addr:0x10
Obtained 54 stack frames.
#0 0x005637bcfde4fc in burst_signal_handler(int, siginfo_t, void)
#1 0x007f216456ac30 in __sigaction
#2 0x007f20f13eaa9a in vdp_imp_device_create_x11
#3 0x007f20f13b04d8 in vdp_imp_device_create_x11
#4 0x007f20f1274fb1 in vdp_imp_device_create_x11
#5 0x007f20f1275638 in vdp_imp_device_create_x11
#6 0x007f20f13a54e8 in vdp_imp_device_create_x11
#7 0x005637bd639382 in ApiGLES::IsVertexArray(gl::Handle<(gl::ObjectType)3>)
#8 0x005637bd64aa1a in GfxContextGLES::GetDefaultVertexArray() const
#9 0x005637bd63a885 in ApiGLES::Invalidate(GfxContextGLES const&)
#10 0x005637bd610213 in gles::InvalidatePipelineStates(GfxContextGLES const&, DeviceStateGLES&)
#11 0x005637bd61a063 in GfxDeviceGLES::InvalidateState()
#12 0x005637bce7fd24 in GLInvalidateState()
#13 0x00000040d82907 in (wrapper managed-to-native) UnityEngine.GL:InvalidateState ()
#14 0x00000040d83d47 in NoesisView:OnPostRender ()

I'm working on Gnome Wayland and i think Unity runs over XWayland. So maybe its a XWayland problem?

Having a look at the call stack.... is this using GL ES on desktop? Because I don't think that's supported with Noesis right now.

#11 0x005637bd61a063 in GfxDeviceGLES::InvalidateState()

We are calling GL.InvalidateState from our PostRender function:

public static void RenderOnscreen(Noesis.View view, bool flipY, UnityEngine.Rendering.CommandBuffer commands,
    bool invalidate, bool clearStencil)
{
    FixCommandBuffer(commands);

    if (clearStencil)
    {
        commands.ClearRenderTarget(UnityEngine.Rendering.RTClearFlags.Stencil, UnityEngine.Color.black, 1.0f, 0);
    }

    var eventId = flipY ? EventId.RenderOnscreenFlipY : EventId.RenderOnscreen;

    #if UNITY_2022_2_OR_NEWER
    commands.IssuePluginEventAndDataWithFlags(_renderOnscreenCallback, (int)eventId,
        invalidate ? CustomMarkerCallbackForceInvalidateStateTracking : CustomMarkerCallbackDefault,
        view.Renderer.CPtr.Handle);
    #else
    commands.IssuePluginEventAndData(_renderOnscreenCallback, (int)eventId, view.Renderer.CPtr.Handle);
    if (invalidate) InvalidateState(commands);
    #endif
}

It seems Unity is giving an error when invalidating the GL state.

I've checked via glxinfo. I'm running under OpenGL and Unity runs on OpenGL 4.5 (also visible in the Title bar)

have you tried the same project in WIndows?

If you don't have a Windows machine, could you share the project so that I can try it? (will try with D3D, GL and Vulkan renderers).