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SDL_DisplayMode now represents physical pixels and has added a display scaling factor

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Work in progress on https://github.com/libsdl-org/SDL/issues/7134
This commit is contained in:
Sam Lantinga
2023-01-25 03:36:35 -08:00
parent a1e101e898
commit 6a27188023
21 changed files with 109 additions and 91 deletions
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10
include/SDL3/SDL_video.h
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@@ -56,8 +56,9 @@ typedef Uint32 SDL_WindowID;
typedef struct
{
Uint32 format; /**< pixel format */
int w; /**< width, in screen coordinates */
int h; /**< height, in screen coordinates */
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) */
float refresh_rate; /**< refresh rate (or zero for unspecified) */
void *driverdata; /**< driver-specific data, initialize to 0 */
} SDL_DisplayMode;
@@ -322,7 +323,7 @@ extern DECLSPEC int SDLCALL SDL_GetNumVideoDisplays(void);
extern DECLSPEC const char *SDLCALL SDL_GetDisplayName(int displayIndex);
/**
* Get the desktop area represented by a display.
* Get the desktop area represented by a display, in screen coordinates.
*
* The primary display (`displayIndex` zero) is always located at 0,0.
*
@@ -338,7 +339,7 @@ extern DECLSPEC const char *SDLCALL SDL_GetDisplayName(int displayIndex);
extern DECLSPEC int SDLCALL SDL_GetDisplayBounds(int displayIndex, SDL_Rect *rect);
/**
* Get the usable desktop area represented by a display.
* Get the usable desktop area represented by a display, in screen coordinates.
*
* The primary display (`displayIndex` zero) is always located at 0,0.
*
@@ -440,6 +441,7 @@ extern DECLSPEC int SDLCALL SDL_GetNumDisplayModes(int displayIndex);
*
* - width -> largest to smallest
* - height -> largest to smallest
* - display_scale -> smallest to largest
* - bits per pixel -> more colors to fewer colors
* - packed pixel layout -> largest to smallest
* - refresh rate -> highest to lowest