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[rcore_desktop_sdl] fix: handle monitor ID correctly on SDL3 (#5290)

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SDL3 uses ID when dealing with monitors, unlike SDL2 which uses Index
for the same thing. This problem was already fixed in multiple places
by use of preprocessor branches, so I did the very same thing.

Please, notice that this is a pretty bad solution to this problem,
and I only did it to keep it consistent with the rest of the code.
The more about why it's not correct is mentioned here:
https://github.com/raysan5/raylib/issues/5256#issuecomment-3429156919
Hopefully, someone will refactor it someday :)

Fixes: https://github.com/raysan5/raylib/issues/5256
This commit is contained in:
sleeptightAnsiC
2025-10-21 22:07:04 +02:00
committed by GitHub
parent 99ed814615
commit 1b5a14e516
1 changed files with 36 additions and 1 deletions
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37
src/platforms/rcore_desktop_sdl.c
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@ -837,7 +837,11 @@ void SetWindowPosition(int x, int y)
void SetWindowMonitor(int monitor)
{
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
if ((monitor > 0) && (monitor <= monitorCount))
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
{
// NOTE:
// 1. SDL started supporting moving exclusive fullscreen windows between displays on SDL3,
@ -961,7 +965,11 @@ int GetCurrentMonitor(void)
Vector2 GetMonitorPosition(int monitor)
{
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
if ((monitor > 0) && (monitor <= monitorCount))
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
{
SDL_Rect displayBounds;
@ -985,7 +993,11 @@ int GetMonitorWidth(int monitor)
int width = 0;
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
if ((monitor > 0) && (monitor <= monitorCount))
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
{
SDL_DisplayMode mode;
SDL_GetCurrentDisplayMode(monitor, &mode);
@ -1002,7 +1014,11 @@ int GetMonitorHeight(int monitor)
int height = 0;
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
if ((monitor > 0) && (monitor <= monitorCount))
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
{
SDL_DisplayMode mode;
SDL_GetCurrentDisplayMode(monitor, &mode);
@ -1019,7 +1035,11 @@ int GetMonitorPhysicalWidth(int monitor)
int width = 0;
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
if ((monitor > 0) && (monitor <= monitorCount))
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
{
float ddpi = 0.0f;
SDL_GetDisplayDPI(monitor, &ddpi, NULL, NULL);
@ -1039,7 +1059,11 @@ int GetMonitorPhysicalHeight(int monitor)
int height = 0;
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
if ((monitor > 0) && (monitor <= monitorCount))
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
{
float ddpi = 0.0f;
SDL_GetDisplayDPI(monitor, &ddpi, NULL, NULL);
@ -1059,7 +1083,11 @@ int GetMonitorRefreshRate(int monitor)
int refresh = 0;
const int monitorCount = SDL_GetNumVideoDisplays();
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
if ((monitor > 0) && (monitor <= monitorCount))
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
{
SDL_DisplayMode mode;
SDL_GetCurrentDisplayMode(monitor, &mode);
@ -1075,7 +1103,14 @@ const char *GetMonitorName(int monitor)
{
const int monitorCount = SDL_GetNumVideoDisplays();
if ((monitor >= 0) && (monitor < monitorCount)) return SDL_GetDisplayName(monitor);
#if defined(USING_VERSION_SDL3) // SDL3 Migration: Monitor is an id instead of index now, returns 0 on failure
if ((monitor > 0) && (monitor <= monitorCount))
#else
if ((monitor >= 0) && (monitor < monitorCount))
#endif
{
return SDL_GetDisplayName(monitor);
}
else TRACELOG(LOG_WARNING, "SDL: Failed to find selected monitor");
return "";