Design mechanism for setting a window's colour, z, and stencil depths, etc.
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Mark P
Should really allow configuration off the opengl context to some extent. Should also do intelligent default selection. Eg find closest match to 32-bit colour, 24-bit depth, 8-bit stencil.
Whiteboard
GlConfig object can be passed into GlWindow constructor to request a particular configuration, and a GlConfig object representing what was actually set can be accessed with WindowBase:
(?)
