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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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4
include/SDL_video.h
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@@ -110,7 +110,9 @@ typedef enum
SDL_WINDOW_MOUSE_FOCUS = 0x00000400, /**< window has mouse focus */
SDL_WINDOW_FULLSCREEN_DESKTOP = ( SDL_WINDOW_FULLSCREEN | 0x00001000 ),
SDL_WINDOW_FOREIGN = 0x00000800, /**< window not created by SDL */
SDL_WINDOW_ALLOW_HIGHDPI = 0x00002000, /**< window should be created in high-DPI mode if supported */
SDL_WINDOW_ALLOW_HIGHDPI = 0x00002000, /**< window should be created in high-DPI mode if supported.
On macOS NSHighResolutionCapable must be set true in the
application's Info.plist for this to have any effect. */
SDL_WINDOW_MOUSE_CAPTURE = 0x00004000, /**< window has mouse captured (unrelated to INPUT_GRABBED) */
SDL_WINDOW_ALWAYS_ON_TOP = 0x00008000, /**< window should always be above others */
SDL_WINDOW_SKIP_TASKBAR = 0x00010000, /**< window should not be added to the taskbar */

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()
*/