Joseph C. Osborn 2805694378 Refactor viewport handling/aspect ratio scaling.
This mirrors the use of video_viewport_get_scaled_integer for
non-integer scaling at various aspect ratios.  Two variants are
provided, one with implicit device and desired ratios and one with
explicit ratios.

Also added a flag to video_viewport_get_scaled_integer to indicate the
direction of positive y.
2024-06-25 08:18:39 -05:00
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