[TextBlock] - Runing game causes segmentation fault when Graphics Api is OpenGL

[Jklawreszuk]

Release Type: Official Release

Version: Latest

Platform(s): Linux/Windows, OpenGL

Describe the bug

After launching, the game crashes, causing a segmentation error after exactly n seconds

To Reproduce
Steps to reproduce the behavior:

1. Create JumpyJet demo
2. Target Linux platform
3. Build / Publish the game on Windows
4. Run executable on Linux after meeting requirements or Windows
5. Application should crash after few seconds

Expected behavior
The application should work without any problems

My observations

Every application that had TextBlock objects caused this problem. When I removed all occurrences of it (for example, in JumpyJet) the problem did not appear

[Jklawreszuk]

Update: There is something wrong with OpenGL api. Switched on Vulkan everything works fine

[NicusorN5]

Do you have any stacktrace from the segfault?

[Jklawreszuk]

@NicusorN5 No it just silently crash :( (On Linux, but Windows shows stacktrace only once -if you run it again, you have to restart the operating system to see stacktrace)
I also updated title because it seems that OpenGL does not work properly on any platforn

[Jklawreszuk]

I switched backed again to Windows and I've managed to receive stacktrace:

Fatal error. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
   at Silk.NET.OpenGL.GL.BufferData[[System.IntPtr, System.Private.CoreLib, Version=8.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]](Silk.NET.OpenGL.BufferTargetARB, UIntPtr, IntPtr ByRef, Silk.NET.OpenGL.BufferUsageARB)
   at Stride.Graphics.CommandList.MapSubresource(Stride.Graphics.GraphicsResource, Int32, Stride.Graphics.MapMode, Boolean, Int32, Int32)
   at Stride.Graphics.BatchBase`1[[Stride.Graphics.UIBatch+UIImageDrawInfo, Stride.Graphics, Version=4.2.0.2188, Culture=neutral, PublicKeyToken=null]].DrawBatchPerTextureAndPass(ElementInfo<UIImageDrawInfo>[], Int32, Int32)
   at Stride.Graphics.BatchBase`1[[Stride.Graphics.UIBatch+UIImageDrawInfo, Stride.Graphics, Version=4.2.0.2188, Culture=neutral, PublicKeyToken=null]].DrawBatchPerTexture(Stride.Graphics.Texture, ElementInfo<UIImageDrawInfo>[], Int32, Int32)
   at Stride.Graphics.BatchBase`1[[Stride.Graphics.UIBatch+UIImageDrawInfo, Stride.Graphics, Version=4.2.0.2188, Culture=neutral, PublicKeyToken=null]].FlushBatch()
   at Stride.Graphics.BatchBase`1[[Stride.Graphics.UIBatch+UIImageDrawInfo, Stride.Graphics, Version=4.2.0.2188, Culture=neutral, PublicKeyToken=null]].End()
   at Stride.Rendering.UI.UIRenderFeature.DrawInternal(Stride.Rendering.RenderDrawContext, Stride.Rendering.RenderView, Stride.Rendering.RenderViewStage, Int32, Int32)
   at Stride.Rendering.UI.UIRenderFeature.Draw(Stride.Rendering.RenderDrawContext, Stride.Rendering.RenderView, Stride.Rendering.RenderViewStage, Int32, Int32)
   at Stride.Rendering.RenderSystem.Draw(Stride.Rendering.RenderDrawContext, Stride.Rendering.RenderView, Stride.Rendering.RenderStage)
   at JumpyJet.JumpyJetRenderer.DrawCore(Stride.Rendering.RenderContext, Stride.Rendering.RenderDrawContext)
   at Stride.Rendering.Compositing.SceneRendererBase.Draw(Stride.Rendering.RenderDrawContext)
   at Stride.Rendering.Compositing.SceneCameraRenderer.DrawInner(Stride.Rendering.RenderDrawContext)
   at Stride.Rendering.Compositing.SceneCameraRenderer.DrawCore(Stride.Rendering.RenderContext, Stride.Rendering.RenderDrawContext)
   at Stride.Rendering.Compositing.SceneRendererBase.Draw(Stride.Rendering.RenderDrawContext)
   at Stride.Rendering.Compositing.GraphicsCompositor.DrawCore(Stride.Rendering.RenderDrawContext)
   at Stride.Rendering.RendererBase.Draw(Stride.Rendering.RenderDrawContext)
   at Stride.Engine.SceneSystem.Draw(Stride.Games.GameTime)
   at Stride.Games.GameSystemCollection.Draw(Stride.Games.GameTime)
   at Stride.Games.GameBase.Draw(Stride.Games.GameTime)
   at Stride.Games.GameBase.RawTick(System.TimeSpan, Int32, Single, Boolean)
   at Stride.Games.GameBase.RawTickProducer()
   at Stride.Games.GameBase.Tick()
   at Stride.Games.GamePlatform.Tick()
   at Stride.Games.GamePlatform.OnRunCallback()
   at Stride.Games.GameWindowSDL+<>c__DisplayClass17_0.<Run>b__0()
   at Stride.Games.SDLMessageLoop.Run(Stride.Graphics.SDL.Window, RenderCallback)
   at Stride.Games.GameWindowSDL.Run()
   at Stride.Games.GamePlatform.Run(Stride.Games.GameContext)
   at Stride.Games.GameBase.Run(Stride.Games.GameContext)
   at Program.<Main>$(System.String[])
Segmentation fault

[Jklawreszuk]

Quick update: Commenting out GL.BufferData in CommandList.OpenGl.cs line 943 fixes the crash problem :) . Not sure what consequences are though since I'm not experience with OpenGL well

Edit: Maybe something gone wrong during OpenTK -> Silk transition?

[Jklawreszuk]

I tried to debug code for a couple of days and I still dont understand why It crashes. In my case adding if (mapMode == MapMode.WriteDiscard && buffer.BufferId != 11) for CommandList.OpenGL.cs -------> MapSubresource (line 940) was fixing an issue

[Jklawreszuk]

BufferId == 11 was ArrayBuffer in my case

[AbdallahFH]

So what is the problem now if you have fixed it?

[Jklawreszuk]

this is just a workaround