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diff --git a/src/contrib/SDL-3.2.20/include/SDL3/SDL_test_common.h b/src/contrib/SDL-3.2.20/include/SDL3/SDL_test_common.h
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@@ -0,0 +1,289 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/**
+ *  Common functions of SDL test framework.
+ *
+ *  This code is a part of the SDL test library, not the main SDL library.
+ */
+
+/* Ported from original test/common.h file. */
+
+#ifndef SDL_test_common_h_
+#define SDL_test_common_h_
+
+#include <SDL3/SDL.h>
+
+#ifdef SDL_PLATFORM_PSP
+#define DEFAULT_WINDOW_WIDTH  480
+#define DEFAULT_WINDOW_HEIGHT 272
+#elif defined(SDL_PLATFORM_VITA)
+#define DEFAULT_WINDOW_WIDTH  960
+#define DEFAULT_WINDOW_HEIGHT 544
+#else
+#define DEFAULT_WINDOW_WIDTH  640
+#define DEFAULT_WINDOW_HEIGHT 480
+#endif
+
+typedef Uint32 SDLTest_VerboseFlags;
+#define VERBOSE_VIDEO   0x00000001
+#define VERBOSE_MODES   0x00000002
+#define VERBOSE_RENDER  0x00000004
+#define VERBOSE_EVENT   0x00000008
+#define VERBOSE_AUDIO   0x00000010
+#define VERBOSE_MOTION  0x00000020
+
+/* !< Function pointer parsing one argument at argv[index], returning the number of parsed arguments,
+ *    or a negative value when the argument is invalid */
+typedef int (SDLCALL *SDLTest_ParseArgumentsFp)(void *data, char **argv, int index);
+
+/* !< Finalize the argument parser. */
+typedef void (SDLCALL *SDLTest_FinalizeArgumentParserFp)(void *arg);
+
+typedef struct SDLTest_ArgumentParser
+{
+    /* !< Parse an argument. */
+    SDLTest_ParseArgumentsFp parse_arguments;
+    /* !< Finalize this argument parser. Called once before parsing the first argument. */
+    SDLTest_FinalizeArgumentParserFp finalize;
+    /* !< Null-terminated array of arguments. Printed when running with --help. */
+    const char **usage;
+    /* !< User data, passed to all callbacks. */
+    void *data;
+    /* !< Next argument parser. */
+    struct SDLTest_ArgumentParser *next;
+} SDLTest_ArgumentParser;
+
+typedef struct
+{
+    /* SDL init flags */
+    char **argv;
+    SDL_InitFlags flags;
+    SDLTest_VerboseFlags verbose;
+
+    /* Video info */
+    const char *videodriver;
+    int display_index;
+    SDL_DisplayID displayID;
+    const char *window_title;
+    const char *window_icon;
+    SDL_WindowFlags window_flags;
+    bool flash_on_focus_loss;
+    int window_x;
+    int window_y;
+    int window_w;
+    int window_h;
+    int window_minW;
+    int window_minH;
+    int window_maxW;
+    int window_maxH;
+    float window_min_aspect;
+    float window_max_aspect;
+    int logical_w;
+    int logical_h;
+    bool auto_scale_content;
+    SDL_RendererLogicalPresentation logical_presentation;
+    float scale;
+    int depth;
+    float refresh_rate;
+    bool fill_usable_bounds;
+    bool fullscreen_exclusive;
+    SDL_DisplayMode fullscreen_mode;
+    int num_windows;
+    SDL_Window **windows;
+    const char *gpudriver;
+
+    /* Renderer info */
+    const char *renderdriver;
+    int render_vsync;
+    bool skip_renderer;
+    SDL_Renderer **renderers;
+    SDL_Texture **targets;
+
+    /* Audio info */
+    const char *audiodriver;
+    SDL_AudioFormat audio_format;
+    int audio_channels;
+    int audio_freq;
+    SDL_AudioDeviceID audio_id;
+
+    /* GL settings */
+    int gl_red_size;
+    int gl_green_size;
+    int gl_blue_size;
+    int gl_alpha_size;
+    int gl_buffer_size;
+    int gl_depth_size;
+    int gl_stencil_size;
+    int gl_double_buffer;
+    int gl_accum_red_size;
+    int gl_accum_green_size;
+    int gl_accum_blue_size;
+    int gl_accum_alpha_size;
+    int gl_stereo;
+    int gl_release_behavior;
+    int gl_multisamplebuffers;
+    int gl_multisamplesamples;
+    int gl_retained_backing;
+    int gl_accelerated;
+    int gl_major_version;
+    int gl_minor_version;
+    int gl_debug;
+    int gl_profile_mask;
+
+    /* Mouse info */
+    SDL_Rect confine;
+    bool hide_cursor;
+
+    /* Options info */
+    SDLTest_ArgumentParser common_argparser;
+    SDLTest_ArgumentParser video_argparser;
+    SDLTest_ArgumentParser audio_argparser;
+
+    SDLTest_ArgumentParser *argparser;
+} SDLTest_CommonState;
+
+#include <SDL3/SDL_begin_code.h>
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Function prototypes */
+
+/**
+ * Parse command line parameters and create common state.
+ *
+ * \param argv Array of command line parameters
+ * \param flags Flags indicating which subsystem to initialize (i.e. SDL_INIT_VIDEO | SDL_INIT_AUDIO)
+ *
+ * \returns a newly allocated common state object.
+ */
+SDLTest_CommonState * SDLCALL SDLTest_CommonCreateState(char **argv, SDL_InitFlags flags);
+
+/**
+ * Free the common state object.
+ *
+ * You should call SDL_Quit() before calling this function.
+ *
+ * \param state The common state object to destroy
+ */
+void SDLCALL SDLTest_CommonDestroyState(SDLTest_CommonState *state);
+
+/**
+ * Process one common argument.
+ *
+ * \param state The common state describing the test window to create.
+ * \param index The index of the argument to process in argv[].
+ *
+ * \returns the number of arguments processed (i.e. 1 for --fullscreen, 2 for --video [videodriver], or -1 on error.
+ */
+int SDLCALL SDLTest_CommonArg(SDLTest_CommonState *state, int index);
+
+
+/**
+ * Logs command line usage info.
+ *
+ * This logs the appropriate command line options for the subsystems in use
+ *  plus other common options, and then any application-specific options.
+ *  This uses the SDL_Log() function and splits up output to be friendly to
+ *  80-character-wide terminals.
+ *
+ * \param state The common state describing the test window for the app.
+ * \param argv0 argv[0], as passed to main/SDL_main.
+ * \param options an array of strings for application specific options. The last element of the array should be NULL.
+ */
+void SDLCALL SDLTest_CommonLogUsage(SDLTest_CommonState *state, const char *argv0, const char **options);
+
+/**
+ * Open test window.
+ *
+ * \param state The common state describing the test window to create.
+ *
+ * \returns true if initialization succeeded, false otherwise
+ */
+bool SDLCALL SDLTest_CommonInit(SDLTest_CommonState *state);
+
+/**
+ * Easy argument handling when test app doesn't need any custom args.
+ *
+ * \param state The common state describing the test window to create.
+ * \param argc argc, as supplied to SDL_main
+ * \param argv argv, as supplied to SDL_main
+ *
+ * \returns false if app should quit, true otherwise.
+ */
+bool SDLCALL SDLTest_CommonDefaultArgs(SDLTest_CommonState *state, int argc, char **argv);
+
+/**
+ * Print the details of an event.
+ *
+ * This is automatically called by SDLTest_CommonEvent() as needed.
+ *
+ * \param event The event to print.
+ */
+void SDLCALL SDLTest_PrintEvent(const SDL_Event *event);
+
+/**
+ * Common event handler for test windows if you use a standard SDL_main.
+ *
+ * \param state The common state used to create test window.
+ * \param event The event to handle.
+ * \param done Flag indicating we are done.
+ */
+void SDLCALL SDLTest_CommonEvent(SDLTest_CommonState *state, SDL_Event *event, int *done);
+
+/**
+ * Common event handler for test windows if you use SDL_AppEvent.
+ *
+ * This does _not_ free anything in `event`.
+ *
+ * \param state The common state used to create test window.
+ * \param event The event to handle.
+ * \returns Value suitable for returning from SDL_AppEvent().
+ */
+SDL_AppResult SDLCALL SDLTest_CommonEventMainCallbacks(SDLTest_CommonState *state, const SDL_Event *event);
+
+/**
+ * Close test window.
+ *
+ * \param state The common state used to create test window.
+ *
+ */
+void SDLCALL SDLTest_CommonQuit(SDLTest_CommonState *state);
+
+/**
+ * Draws various window information (position, size, etc.) to the renderer.
+ *
+ * \param renderer The renderer to draw to.
+ * \param window The window whose information should be displayed.
+ * \param usedHeight Returns the height used, so the caller can draw more below.
+ *
+ */
+void SDLCALL SDLTest_CommonDrawWindowInfo(SDL_Renderer *renderer, SDL_Window *window, float *usedHeight);
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+}
+#endif
+#include <SDL3/SDL_close_code.h>
+
+#endif /* SDL_test_common_h_ */