In windows 10 unhandled exception "System.Exception: 'wglChoosePixelFormatARB failed: error 0'"

[migueltk]

Hello ...
When testing the demos, the following error is thrown in all of them:
"System.Exception: 'wglChoosePixelFormatARB failed: error 0'"
inside the method "private void CreateOpenGLContext (IntPtr hwnd)" in the file "Win32OpenGLRenderer.Windows.cs".
I use 'Windows 10 pro', version '21H1', 64-bit operating system.
OpenGL:
Renderer: Radeon RX 580 Series
Vendor: ATI Technologies Inc.
Version: 4.6.14761 Core Profile Forward-Compatible Context 21.10.2 30.0.13025.5005
Shading language version: 4.60

I appreciate any help, your project is great.
Thanks in advance ... Miguel

[zwcloud]

The demo project should run without problem, but they haven't been tested for a long time. Maybe I broke something when developing child window rendering. I'll look into the issue this weekend.

BTW, I will restart development of ImGui in the next month. Thanks for let me know you are interested in this project.

[zwcloud]

Seems to be a GPU-specific issue. I cannot reproduce the error on win10 and NVIDIA 1070Ti/2080Ti.

Please try disable MSAA by setting Application.EnableMSAA to false, and run the demo again. @migueltk
If it works, please reply to let me know, thanks.

[migueltk]

Following your instructions I have changed the default value to *Application.EnableMSAA = false* and the demo has worked correctly, but when closing the window the following exception appears: *System.InvalidOperationException: 'Wgl.MakeCurrent failed, error: Invalid controller.'* and the next call stack; * ImGui.dll!ImGui.OSImplementation.Windows.Win32OpenGLRenderer.SetRenderingWindow(ImGui.OSAbstraction.Window.IWindow window) line 130 C# ImGui.dll!ImGui.Application.Render() line 305 C# ImGui.dll!ImGui.Application.Run.AnonymousMethod__0() line 129 C# ImGui.dll!ImGui.OSImplementation.Windows.Win32Window.MainLoop(System.Action guiMethod) line 688 C# ImGui.dll!ImGui.Form.MainLoop(System.Action loopMethod) line 113 C# ImGui.dll!ImGui.Application.Run(ImGui.Form mainForm, System.Action onGUI) line 118 C# Calculator.dll!Calculator.Program.Main() line 13 C#* I understand that although *MainForm.Closed* is false, in the *Render *method there is no valid rendering context. Thanks for your answer ... Greetings ... Miguel El lun, 6 dic 2021 a las 6:32, Zou Wei ***@***.***>) escribió:

…

Seems to be a GPU-specific issue. I cannot reproduce the error on win10 and NVIDIA 1070Ti and 2080Ti. Please try disable MSAA by setting Application.EnableMSAA to false, and run the demo again. @migueltk <https://github.com/migueltk> — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#75 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ABOPZVKPGVZNCYJBEIC3YZ3UPRDH3ANCNFSM5JFPFMMA> . Triage notifications on the go with GitHub Mobile for iOS <https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android <https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

[zwcloud]

when closing the window the
following exception appears:

System.InvalidOperationException: 'Wgl.MakeCurrent failed, error: Invalid
controller.'

This is a known issue. I will fix it later.