OpenGL current rendering context and current device handles in Unity

[Cédric Le Cam]

Hi everyone,

I'm wondering if there's an actual way to get the handles to the OpenGL rendering context and current device used by Unity when an application is run.
I tried to do so with the opengl32.dll and the wglGetCurrentContext and wglGetCurrentDC functions, but all I got were IntPtr equal to zero.

I hope you can help me.

[Jan Ciger]

Isn't Unity using Direct3D on Windows? Then you wouldn't have a valid
OpenGL context.

Regards,

Jan

[Dave Buchhofer]

You can use opengl, but you need to supply it as a command line argument

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[Naem BARON]

Hello world

you have to use the command line argument "-force-opengl" to run in OpenGL mode, then the glContext should not be null.

Naëm

return 0;

[Jan Ciger]

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It can still be - not sure how it is on Windows, but e.g. in Linux the
OpenGL context is something that is thread-local. If you are in
another thread, you won't have access to it without some wizardry.

Also, the state management can be a pain - I am sure Unity won't be
happy if you just start drawing random stuff when it doesn't expect it.

Jan
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[Cédric Le Cam]

As far as the handles are concerned, -force-opengl did the trick.
Thank you.