new mechanism to choose GLCapabilties for new GLCanvas, let's see if this helps reduce the frequency of unavailable ARB capabiltiies for multiple AEViewers
new mechanism to choose GLCapabilties for new GLCanvas, let's see if this helps reduce the frequency of unavailable ARB capabiltiies for multiple AEViewers

git-svn-id: fe6b3b33f0410f5f719dcd9e0c58b92353e7a5d3@5712 b7f4320f-462c-0410-a916-d9f35bb82d52

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