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Add full high DPI information to SDL_DisplayMode

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SDL_DisplayMode now includes the pixel size, the screen size and the relationship between the two. For example, a 4K display at 200% scale could have a pixel size of 3840x2160, a screen size of 1920x1080, and a display scale of 2.0.
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Sam Lantinga committed 2023-01-27 12:38:46 -08:00
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docs/README-migration.md
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@@ -954,6 +954,8 @@ The SDL_WINDOW_SHOWN flag has been removed. Windows are shown by default and can
The SDL_WINDOW_ALLOW_HIGHDPI flag has been removed. Windows are automatically high DPI aware and their coordinates are in screen space, which may differ from physical pixels on displays using display scaling.
SDL_DisplayMode now includes the pixel size, the screen size and the relationship between the two. For example, a 4K display at 200% scale could have a pixel size of 3840x2160, a screen size of 1920x1080, and a display scale of 2.0.
The refresh rate in SDL_DisplayMode is now a float.
SDL_SetWindowBrightness and SDL_SetWindowGammaRamp have been removed from the API, because they interact poorly with modern operating systems and aren't able to limit their effects to the SDL window.