This is an enhancement request.
Some windowed games (for instance, the original Jumper, which is linked below) could benefit from double-scaling, so that the user can see better.
I have been following this closely. I see that the target milestone indicates that this might currently be worked on.
I am interested in being informed of any progress concerning this!
Since I haven't implemented it in release 0.5.17 I have moved the milestone to 0.5.18.
Marking status as IN_PROGRESS.
I have a partial implementation working on my end, capable of playing Jumper. I'll be closing this bug by the end of the week when I publish a new version of DXGL.
Since another game, Zelda Classic (ZQuest Editor), isn't working correctly yet I am not ready to release, not to mention I still have to test the new overlay surface feature to ensure it scales properly too.
Now fixed as of DXGL 0.5.18
This is an optional setting in DXGL Config.