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The Open Toolkit library 0.9.8

Posted Sunday, 31 May, 2009 - 16:45 by the Fiddler

New in this release:

  • Full OpenGL 3.1 support
  • New example browser with source code and documentation display
  • Minor cleanups to the OpenGL API
  • Improved stability
  • Significantly improved TextPrinter performance
  • OpenGLErrorExceptions thrown on OpenGL errors (debug builds only)
  • A large number of bug fixes. Refer to the [Resolved issues] section in the full release notes

This release contains potentially breaking changes. Please read the release notes and known issues before upgrading.


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Inertia's picture

Re: The Open Toolkit library 0.9.8

Posted Sunday, 31 May, 2009 - 16:58 by Inertia

Excellent, thanks for wrapping it up :)

triton's picture

Re: The Open Toolkit library 0.9.8

Posted Sunday, 31 May, 2009 - 18:58 by triton

Thanks for the excellent work. I'm going to try to upgrade soon. :)

triton's picture

Re: The Open Toolkit library 0.9.8

Posted Sunday, 31 May, 2009 - 21:03 by triton

Upgraded my project and everything seems to be working fine, at least on Windows. :)

Again excellent work guys.

Kamujin's picture

Re: The Open Toolkit library 0.9.8

Posted Wednesday, 3 June, 2009 - 03:09 by Kamujin

Very cool. I will realign my code and try out the TextPrinter stuff immediately.

*edit* Early testing looks good. Text rendering bugs on Ubuntu no longer observed.

Entropy's picture

Re: The Open Toolkit library 0.9.8

Posted Wednesday, 3 June, 2009 - 08:54 by Entropy
Kamujin wrote:

Text rendering bugs on Ubuntu no longer observed.

Excellent. My workarounds for this were pretty messy.

the Fiddler's picture

Re: The Open Toolkit library 0.9.8

Posted Wednesday, 3 June, 2009 - 17:40 by the Fiddler

Careful, text wrapping is still not working on Mono. Only translations do.

Unfortunately, this bug won't be fixed for Mono 2.6 (September release): it seems they might add the new, Pango-based text renderer but not enable it by default. Mono 2.8 is the soonest we can expect a complete solution.

Does anyone know how Pango or Mono.Pango works?

triton's picture

Re: The Open Toolkit library 0.9.8

Posted Wednesday, 3 June, 2009 - 18:00 by triton

I have used Pango before to create a custom widget in GTK+, but nothing very advanced, just simple text layouting.

Do you want to create a Pango-based text layouting engine for OpenTK?

I don't know exactly how OpenTK works in regards to text layout, do you use GDI+ on Windows and rely on Mono implementation of GDI? Would the plan in the meantime to add a Pango-based engine because Mono has bugs?

the Fiddler's picture

Re: The Open Toolkit library 0.9.8

Posted Wednesday, 3 June, 2009 - 19:02 by the Fiddler
triton wrote:

Do you want to create a Pango-based text layouting engine for OpenTK?

I don't know exactly how OpenTK works in regards to text layout, do you use GDI+ on Windows and rely on Mono implementation of GDI? Would the plan in the meantime to add a Pango-based engine because Mono has bugs?

Correct on all accounts. OpenTK relies on System.Drawing (GDI+) to render glyphs and lay them out to form text.

I'd appreciate it if you can give some pointers regarding Pango. I have added an issue report with more details on the problem (#932: Text rendering on Mono - investigate GDI+ alternatives).