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Added support for simulated vsync in the renderer

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This kicks in if the platform doesn't support vsync directly, or if the present fails for some reason (e.g. minimized on some platforms)

Fixes https://github.com/libsdl-org/SDL/issues/5134
This commit is contained in:
Sam Lantinga
2022-09-15 01:00:12 -07:00
parent 339f7a2f6b
commit d744aafb05
15 changed files with 115 additions and 37 deletions
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2
src/video/SDL_sysvideo.h
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@@ -519,6 +519,8 @@ extern void SDL_ToggleDragAndDropSupport(void);
extern int SDL_GetPointDisplayIndex(const SDL_Point * point);
extern int SDL_GL_SwapWindowWithResult(SDL_Window * window);
#endif /* SDL_sysvideo_h_ */
/* vi: set ts=4 sw=4 expandtab: */

20
src/video/SDL_video.c
View File

@@ -4152,22 +4152,26 @@ SDL_GL_GetSwapInterval(void)
}
}
void
SDL_GL_SwapWindow(SDL_Window * window)
int
SDL_GL_SwapWindowWithResult(SDL_Window * window)
{
CHECK_WINDOW_MAGIC(window,);
CHECK_WINDOW_MAGIC(window, -1);
if (!(window->flags & SDL_WINDOW_OPENGL)) {
SDL_SetError("The specified window isn't an OpenGL window");
return;
return SDL_SetError("The specified window isn't an OpenGL window");
}
if (SDL_GL_GetCurrentWindow() != window) {
SDL_SetError("The specified window has not been made current");
return;
return SDL_SetError("The specified window has not been made current");
}
_this->GL_SwapWindow(_this, window);
return _this->GL_SwapWindow(_this, window);
}
void
SDL_GL_SwapWindow(SDL_Window * window)
{
SDL_GL_SwapWindowWithResult(window);
}
void