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Fix high-dpi support on macOS and simplify it and iOS variant.

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The detault drawableSize for a CAMetalLayer is its bounds x its scale.
So it is sufficient to set the *layer's* scale to the desired value.
This commit is contained in:
Mark Callow 2018-02-21 09:58:21 -08:00
parent a0687a9ccb
commit 69958441be
6 changed files with 42 additions and 43 deletions
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3
include/SDL_vulkan.h
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@ -240,6 +240,9 @@ extern DECLSPEC SDL_bool SDLCALL SDL_Vulkan_CreateSurface(
* platform with high-DPI support (Apple calls this "Retina"), and not disabled
* by the \c SDL_HINT_VIDEO_HIGHDPI_DISABLED hint.
*
* \note On macOS high-DPI support must be enabled for an application by
* setting NSHighResolutionCapable to true in its Info.plist.
*
* \sa SDL_GetWindowSize()
* \sa SDL_CreateWindow()
*/