Multisampling and dummy window

imported_Groovounet · January 18, 2008, 9:17am

Hi,

I try to create an OpenGL context that support multisampling… Under MacOS it’s pretty easy but I fell like in hell under Windows because of the OpenGL 1.1 implementation…

Is it required to create a dummy window or can I just create a dummy context? If I create a dummy window it can set the pixel format but when I create a dummy context, SetPixelFormat returns false…

Thank

system · January 21, 2008, 10:25pm

Yes, you need to create a dummy window, setup a non-AA context, get function pointers, close window. With your main window, now you can use the wgl function pointers to setup AA pixel format.

So the only reason to create a dummy window is to get function pointers.

imported_Groovounet · January 23, 2008, 4:19pm

So why a dummy context isn’t enough? Create the context, get the pointers, close the context and create the context for multisampling?

Zengar · January 23, 2008, 5:02pm

Yes, precisely

system · January 27, 2008, 7:45pm

You need to set the pixel format for the main window, then make a context. But you have already set a non-AA pixel format.
You can only setup pixel format once per window.

That is why you need a dummy window.

system · October 19, 2021, 6:24pm

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