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0e1f3b681f
Video backends that run asynchronously can wind up in a race situation if a mode or position update request queues up a fullscreen enter request while an unprocessed asynchronous leave request is in flight, and the mode switch or position update request is processed after the leave request, causing the window to erroneously return to fullscreen. Instead of the internal SDL_UpdateFullscreenMode and backend SetWindowFullscreen functions taking a boolean value, use an enum that allows the backends to distinguish between "this is an explicit fullscreen enter/leave request", and "this is an update request to change the mode or position". Communicating the specific intent allows the backend to early-out when required, which prevents windows from erroneously returning to fullscreen due to update requests made after a leave request, and allows for the removal of some internal synchronization previously needed to (attempt to) work around this, which improves overall performance while also increasing robustness. This is only relevant to the internal functions, and nothing in the public-facing API has been changed.
52 lines
2.0 KiB
C
52 lines
2.0 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#ifndef SDL_androidwindow_h_
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#define SDL_androidwindow_h_
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#include "../../core/android/SDL_android.h"
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#include "../SDL_egl_c.h"
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extern int Android_CreateWindow(SDL_VideoDevice *_this, SDL_Window *window, SDL_PropertiesID create_props);
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extern void Android_SetWindowTitle(SDL_VideoDevice *_this, SDL_Window *window);
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extern int Android_SetWindowFullscreen(SDL_VideoDevice *_this, SDL_Window *window, SDL_VideoDisplay *display, SDL_FullscreenOp fullscreen);
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extern void Android_MinimizeWindow(SDL_VideoDevice *_this, SDL_Window *window);
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extern void Android_SetWindowResizable(SDL_VideoDevice *_this, SDL_Window *window, SDL_bool resizable);
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extern void Android_DestroyWindow(SDL_VideoDevice *_this, SDL_Window *window);
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extern SDL_Window *Android_Window;
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struct SDL_WindowData
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{
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#ifdef SDL_VIDEO_OPENGL_EGL
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EGLSurface egl_surface;
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EGLContext egl_context; /* We use this to preserve the context when losing focus */
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int has_swap_interval; /* Save/Restore the swap interval / vsync */
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int swap_interval;
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#endif
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SDL_bool backup_done;
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ANativeWindow *native_window;
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};
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#endif /* SDL_androidwindow_h_ */
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