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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.
This commit is contained in:
Sam Lantinga
2023-01-27 10:46:51 -08:00
parent b23d20cd4d
commit 24fec13ac1
31 changed files with 370 additions and 345 deletions
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8
include/SDL3/SDL_video.h
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@@ -56,9 +56,11 @@ typedef Uint32 SDL_WindowID;
typedef struct
{
Uint32 format; /**< pixel format */
int w; /**< width in pixels */
int h; /**< height in pixels */
float display_scale; /**< scale converting screen coordinates to pixels (e.g. a 3840x2160 mode with 1.5 scale would have a screen size of 2560x1440) */
int pixel_w; /**< width in pixels (used for creating back buffers) */
int pixel_h; /**< height in pixels (used for creating back buffers) */
int screen_w; /**< width in screen coordinates (used for creating windows) */
int screen_h; /**< height in screen coordinates (used for creating windows) */
float display_scale; /**< scale converting screen coordinates to pixels (e.g. a 2560x1440 screen size mode with 1.5 scale would have 3840x2160 pixels) */
float refresh_rate; /**< refresh rate (or zero for unspecified) */
void *driverdata; /**< driver-specific data, initialize to 0 */
} SDL_DisplayMode;