chore(build): use SDL3

vendor/sdl-3.2.10/src/video/n3ds/SDL_n3dsevents.c

@@ -0,0 +1,45 @@
+/*
+  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.
+*/
+#include "SDL_internal.h"
+
+#ifdef SDL_VIDEO_DRIVER_N3DS
+
+#include <3ds.h>
+
+#include "../../events/SDL_events_c.h"
+#include "SDL_n3dsevents_c.h"
+#include "SDL_n3dstouch.h"
+
+void N3DS_PumpEvents(SDL_VideoDevice *_this)
+{
+    hidScanInput();
+    N3DS_PollTouch(_this);
+
+    if (!aptMainLoop()) {
+        SDL_Event ev;
+        ev.type = SDL_EVENT_QUIT;
+        ev.common.timestamp = 0;
+        SDL_PushEvent(&ev);
+        return;
+    }
+}
+
+#endif // SDL_VIDEO_DRIVER_N3DS

vendor/sdl-3.2.10/src/video/n3ds/SDL_n3dsevents_c.h

@@ -0,0 +1,29 @@
+/*
+  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.
+*/
+
+#ifndef SDL_n3dsevents_c_h_
+#define SDL_n3dsevents_c_h_
+
+#include "SDL_internal.h"
+
+extern void N3DS_PumpEvents(SDL_VideoDevice *_this);
+
+#endif // SDL_n3dsevents_c_h_

vendor/sdl-3.2.10/src/video/n3ds/SDL_n3dsframebuffer.c

@@ -0,0 +1,161 @@
+/*
+  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.
+*/
+#include "SDL_internal.h"
+
+#ifdef SDL_VIDEO_DRIVER_N3DS
+
+#include "../SDL_sysvideo.h"
+#include "../../SDL_properties_c.h"
+#include "SDL_n3dsframebuffer_c.h"
+#include "SDL_n3dsvideo.h"
+
+#define N3DS_SURFACE "SDL.internal.window.surface"
+
+typedef struct
+{
+    int width, height;
+} Dimensions;
+
+static void CopyFramebuffertoN3DS_16(u16 *dest, const Dimensions dest_dim, const u16 *source, const Dimensions source_dim);
+static void CopyFramebuffertoN3DS_24(u8  *dest, const Dimensions dest_dim, const u8  *source, const Dimensions source_dim);
+static void CopyFramebuffertoN3DS_32(u32 *dest, const Dimensions dest_dim, const u32 *source, const Dimensions source_dim);
+static int GetDestOffset(int x, int y, int dest_width);
+static int GetSourceOffset(int x, int y, int source_width);
+static void FlushN3DSBuffer(const void *buffer, u32 bufsize, gfxScreen_t screen);
+
+
+bool SDL_N3DS_CreateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, SDL_PixelFormat *format, void **pixels, int *pitch)
+{
+    SDL_Surface *framebuffer;
+    const SDL_DisplayMode *mode;
+    int w, h;
+
+    SDL_N3DS_DestroyWindowFramebuffer(_this, window);
+
+    mode = SDL_GetCurrentDisplayMode(SDL_GetDisplayForWindow(window));
+    SDL_GetWindowSizeInPixels(window, &w, &h);
+    framebuffer = SDL_CreateSurface(w, h, mode->format);
+
+    if (!framebuffer) {
+        return false;
+    }
+
+    SDL_SetSurfaceProperty(SDL_GetWindowProperties(window), N3DS_SURFACE, framebuffer);
+    *format = mode->format;
+    *pixels = framebuffer->pixels;
+    *pitch = framebuffer->pitch;
+    return true;
+}
+
+bool SDL_N3DS_UpdateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, const SDL_Rect *rects, int numrects)
+{
+    SDL_WindowData *drv_data = window->internal;
+    SDL_Surface *surface;
+    u16 width, height;
+    void *framebuffer;
+    u32 bufsize;
+
+    surface = (SDL_Surface *)SDL_GetPointerProperty(SDL_GetWindowProperties(window), N3DS_SURFACE, NULL);
+    if (!surface) {
+        return SDL_SetError("%s: Unable to get the window surface.", __func__);
+    }
+
+    // Get the N3DS internal framebuffer and its size
+    framebuffer = gfxGetFramebuffer(drv_data->screen, GFX_LEFT, &width, &height);
+    bufsize = width * height * 4;
+
+    if (SDL_BYTESPERPIXEL(surface->format) == 2)
+        CopyFramebuffertoN3DS_16(framebuffer, (Dimensions){ width, height },
+                                 surface->pixels, (Dimensions){ surface->w, surface->h });
+    else if (SDL_BYTESPERPIXEL(surface->format) == 3)
+        CopyFramebuffertoN3DS_24(framebuffer, (Dimensions){ width, height },
+                                 surface->pixels, (Dimensions){ surface->w, surface->h });
+    else
+        CopyFramebuffertoN3DS_32(framebuffer, (Dimensions){ width, height },
+                                 surface->pixels, (Dimensions){ surface->w, surface->h });
+    FlushN3DSBuffer(framebuffer, bufsize, drv_data->screen);
+
+    return true;
+}
+
+static void CopyFramebuffertoN3DS_16(u16 *dest, const Dimensions dest_dim, const u16 *source, const Dimensions source_dim)
+{
+    int rows = SDL_min(dest_dim.width, source_dim.height);
+    int cols = SDL_min(dest_dim.height, source_dim.width);
+    for (int y = 0; y < rows; ++y) {
+        for (int x = 0; x < cols; ++x) {
+            const u16 *s = source + GetSourceOffset(x, y, source_dim.width);
+            u16 *d = dest + GetDestOffset(x, y, dest_dim.width);
+            *d = *s;
+        }
+    }
+}
+
+static void CopyFramebuffertoN3DS_24(u8 *dest, const Dimensions dest_dim, const u8 *source, const Dimensions source_dim)
+{
+    int rows = SDL_min(dest_dim.width, source_dim.height);
+    int cols = SDL_min(dest_dim.height, source_dim.width);
+    for (int y = 0; y < rows; ++y) {
+        for (int x = 0; x < cols; ++x) {
+            const u8 *s = source + GetSourceOffset(x, y, source_dim.width) * 3;
+            u8 *d = dest + GetDestOffset(x, y, dest_dim.width) * 3;
+            d[0] = s[0];
+            d[1] = s[1];
+            d[2] = s[2];
+        }
+    }
+}
+
+static void CopyFramebuffertoN3DS_32(u32 *dest, const Dimensions dest_dim, const u32 *source, const Dimensions source_dim)
+{
+    int rows = SDL_min(dest_dim.width, source_dim.height);
+    int cols = SDL_min(dest_dim.height, source_dim.width);
+    for (int y = 0; y < rows; ++y) {
+        for (int x = 0; x < cols; ++x) {
+            const u32 *s = source + GetSourceOffset(x, y, source_dim.width);
+            u32 *d = dest + GetDestOffset(x, y, dest_dim.width);
+            *d = *s;
+        }
+    }
+}
+
+static int GetDestOffset(int x, int y, int dest_width)
+{
+    return dest_width - y - 1 + dest_width * x;
+}
+
+static int GetSourceOffset(int x, int y, int source_width)
+{
+    return x + y * source_width;
+}
+
+static void FlushN3DSBuffer(const void *buffer, u32 bufsize, gfxScreen_t screen)
+{
+    GSPGPU_FlushDataCache(buffer, bufsize);
+    gfxScreenSwapBuffers(screen, false);
+}
+
+void SDL_N3DS_DestroyWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window)
+{
+    SDL_ClearProperty(SDL_GetWindowProperties(window), N3DS_SURFACE);
+}
+
+#endif // SDL_VIDEO_DRIVER_N3DS

vendor/sdl-3.2.10/src/video/n3ds/SDL_n3dsframebuffer_c.h

@@ -0,0 +1,31 @@
+/*
+  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.
+*/
+
+#ifndef SDL_n3dsframebuffer_c_h_
+#define SDL_n3dsframebuffer_c_h_
+
+#include "SDL_internal.h"
+
+extern bool SDL_N3DS_CreateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, SDL_PixelFormat *format, void **pixels, int *pitch);
+extern bool SDL_N3DS_UpdateWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window, const SDL_Rect *rects, int numrects);
+extern void SDL_N3DS_DestroyWindowFramebuffer(SDL_VideoDevice *_this, SDL_Window *window);
+
+#endif // SDL_n3dsframebuffer_c_h_

vendor/sdl-3.2.10/src/video/n3ds/SDL_n3dsswkb.c

@@ -0,0 +1,69 @@
+/*
+  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.
+*/
+
+#include "SDL_internal.h"
+
+#ifdef SDL_VIDEO_DRIVER_N3DS
+
+#include <3ds.h>
+
+#include "SDL_n3dsswkb.h"
+
+static SwkbdState sw_keyboard;
+const static size_t BUFFER_SIZE = 256;
+
+void N3DS_SwkbInit(void)
+{
+    swkbdInit(&sw_keyboard, SWKBD_TYPE_NORMAL, 2, -1);
+}
+
+void N3DS_SwkbPoll(void)
+{
+    return;
+}
+
+void N3DS_SwkbQuit(void)
+{
+    return;
+}
+
+bool N3DS_HasScreenKeyboardSupport(SDL_VideoDevice *_this)
+{
+    return true;
+}
+
+bool N3DS_StartTextInput(SDL_VideoDevice *_this, SDL_Window *window, SDL_PropertiesID props)
+{
+    char buffer[BUFFER_SIZE];
+    SwkbdButton button_pressed;
+    button_pressed = swkbdInputText(&sw_keyboard, buffer, BUFFER_SIZE);
+    if (button_pressed == SWKBD_BUTTON_CONFIRM) {
+        SDL_SendKeyboardText(buffer);
+    }
+    return true;
+}
+
+bool N3DS_StopTextInput(SDL_VideoDevice *_this, SDL_Window *window)
+{
+    return true;
+}
+
+#endif // SDL_VIDEO_DRIVER_N3DS

vendor/sdl-3.2.10/src/video/n3ds/SDL_n3dsswkb.h

@@ -0,0 +1,36 @@
+/*
+  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.
+*/
+
+#ifndef SDL_n3dskeyboard_h_
+#define SDL_n3dskeyboard_h_
+
+#include "../../events/SDL_events_c.h"
+
+void N3DS_SwkbInit();
+void N3DS_SwkbPoll();
+void N3DS_SwkbQuit();
+
+bool N3DS_HasScreenKeyboardSupport(SDL_VideoDevice *_this);
+
+bool N3DS_StartTextInput(SDL_VideoDevice *_this, SDL_Window *window, SDL_PropertiesID props);
+bool N3DS_StopTextInput(SDL_VideoDevice *_this, SDL_Window *window);
+
+#endif // SDL_n3dskeyboard_h_

vendor/sdl-3.2.10/src/video/n3ds/SDL_n3dstouch.c

@@ -0,0 +1,86 @@
+/*
+  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.
+*/
+
+#include "SDL_internal.h"
+
+#ifdef SDL_VIDEO_DRIVER_N3DS
+
+#include <3ds.h>
+
+#include "../../events/SDL_touch_c.h"
+#include "../SDL_sysvideo.h"
+#include "SDL_n3dstouch.h"
+#include "SDL_n3dsvideo.h"
+
+#define N3DS_TOUCH_ID 1
+#define N3DS_TOUCH_FINGER 1
+
+/*
+  Factors used to convert touchscreen coordinates to
+  SDL's 0-1 values. Note that the N3DS's screen is
+  internally in a portrait disposition so the
+  GSP_SCREEN constants are flipped.
+*/
+#define TOUCHSCREEN_SCALE_X 1.0f / (GSP_SCREEN_HEIGHT_BOTTOM - 1)
+#define TOUCHSCREEN_SCALE_Y 1.0f / (GSP_SCREEN_WIDTH - 1)
+
+void N3DS_InitTouch(void)
+{
+    SDL_AddTouch(N3DS_TOUCH_ID, SDL_TOUCH_DEVICE_DIRECT, "Touchscreen");
+}
+
+void N3DS_QuitTouch(void)
+{
+    SDL_DelTouch(N3DS_TOUCH_ID);
+}
+
+void N3DS_PollTouch(SDL_VideoDevice *_this)
+{
+    SDL_VideoData *internal = (SDL_VideoData *)_this->internal;
+    touchPosition touch;
+    SDL_Window *window;
+    SDL_VideoDisplay *display;
+    static bool was_pressed = false;
+    bool pressed;
+    hidTouchRead(&touch);
+    pressed = (touch.px != 0 || touch.py != 0);
+
+    display = SDL_GetVideoDisplay(internal->touch_display);
+    window = display ? display->fullscreen_window : NULL;
+
+    if (pressed != was_pressed) {
+        was_pressed = pressed;
+        SDL_SendTouch(0, N3DS_TOUCH_ID, N3DS_TOUCH_FINGER,
+                      window,
+                      pressed ? SDL_EVENT_FINGER_DOWN : SDL_EVENT_FINGER_UP,
+                      touch.px * TOUCHSCREEN_SCALE_X,
+                      touch.py * TOUCHSCREEN_SCALE_Y,
+                      pressed ? 1.0f : 0.0f);
+    } else if (pressed) {
+        SDL_SendTouchMotion(0, N3DS_TOUCH_ID, N3DS_TOUCH_FINGER,
+                            window,
+                            touch.px * TOUCHSCREEN_SCALE_X,
+                            touch.py * TOUCHSCREEN_SCALE_Y,
+                            1.0f);
+    }
+}
+
+#endif // SDL_VIDEO_DRIVER_N3DS

vendor/sdl-3.2.10/src/video/n3ds/SDL_n3dstouch.h

@@ -0,0 +1,29 @@
+/*
+  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.
+*/
+
+#ifndef SDL_n3dstouch_h_
+#define SDL_n3dstouch_h_
+
+void N3DS_InitTouch(void);
+void N3DS_QuitTouch(void);
+void N3DS_PollTouch(SDL_VideoDevice *_this);
+
+#endif // SDL_n3dstouch_h_

vendor/sdl-3.2.10/src/video/n3ds/SDL_n3dsvideo.c

@@ -0,0 +1,259 @@
+/*
+  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.
+*/
+#include "SDL_internal.h"
+
+#ifdef SDL_VIDEO_DRIVER_N3DS
+
+#include "../SDL_sysvideo.h"
+#include "SDL_n3dsevents_c.h"
+#include "SDL_n3dsframebuffer_c.h"
+#include "SDL_n3dsswkb.h"
+#include "SDL_n3dstouch.h"
+#include "SDL_n3dsvideo.h"
+
+#define N3DSVID_DRIVER_NAME "n3ds"
+
+static bool AddN3DSDisplay(gfxScreen_t screen);
+
+static bool N3DS_VideoInit(SDL_VideoDevice *_this);
+static void N3DS_VideoQuit(SDL_VideoDevice *_this);
+static bool N3DS_GetDisplayModes(SDL_VideoDevice *_this, SDL_VideoDisplay *display);
+static bool N3DS_SetDisplayMode(SDL_VideoDevice *_this, SDL_VideoDisplay *display, SDL_DisplayMode *mode);
+static bool N3DS_GetDisplayBounds(SDL_VideoDevice *_this, SDL_VideoDisplay *display, SDL_Rect *rect);
+static bool N3DS_CreateWindow(SDL_VideoDevice *_this, SDL_Window *window, SDL_PropertiesID create_props);
+static void N3DS_DestroyWindow(SDL_VideoDevice *_this, SDL_Window *window);
+
+struct SDL_DisplayData
+{
+    gfxScreen_t screen;
+};
+
+struct SDL_DisplayModeData
+{
+    GSPGPU_FramebufferFormat fmt;
+};
+
+static const struct
+{
+    SDL_PixelFormat pixfmt;
+    GSPGPU_FramebufferFormat gspfmt;
+} format_map[] = {
+    { SDL_PIXELFORMAT_RGBA8888, GSP_RGBA8_OES },
+    { SDL_PIXELFORMAT_BGR24, GSP_BGR8_OES },
+    { SDL_PIXELFORMAT_RGB565, GSP_RGB565_OES },
+    { SDL_PIXELFORMAT_RGBA5551, GSP_RGB5_A1_OES },
+    { SDL_PIXELFORMAT_RGBA4444, GSP_RGBA4_OES }
+};
+
+// N3DS driver bootstrap functions
+
+static void N3DS_DeleteDevice(SDL_VideoDevice *device)
+{
+    SDL_free(device->internal);
+    SDL_free(device);
+}
+
+static SDL_VideoDevice *N3DS_CreateDevice(void)
+{
+    SDL_VideoDevice *device;
+    SDL_VideoData *phdata;
+
+    // Initialize all variables that we clean on shutdown
+    device = (SDL_VideoDevice *)SDL_calloc(1, sizeof(SDL_VideoDevice));
+    if (!device) {
+        return NULL;
+    }
+
+    // Initialize internal data
+    phdata = (SDL_VideoData *)SDL_calloc(1, sizeof(SDL_VideoData));
+    if (!phdata) {
+        SDL_free(device);
+        return NULL;
+    }
+
+    device->internal = phdata;
+
+    device->VideoInit = N3DS_VideoInit;
+    device->VideoQuit = N3DS_VideoQuit;
+
+    device->GetDisplayModes = N3DS_GetDisplayModes;
+    device->SetDisplayMode = N3DS_SetDisplayMode;
+    device->GetDisplayBounds = N3DS_GetDisplayBounds;
+
+    device->CreateSDLWindow = N3DS_CreateWindow;
+    device->DestroyWindow = N3DS_DestroyWindow;
+
+    device->HasScreenKeyboardSupport = N3DS_HasScreenKeyboardSupport;
+    device->StartTextInput = N3DS_StartTextInput;
+    device->StopTextInput = N3DS_StopTextInput;
+
+    device->PumpEvents = N3DS_PumpEvents;
+
+    device->CreateWindowFramebuffer = SDL_N3DS_CreateWindowFramebuffer;
+    device->UpdateWindowFramebuffer = SDL_N3DS_UpdateWindowFramebuffer;
+    device->DestroyWindowFramebuffer = SDL_N3DS_DestroyWindowFramebuffer;
+
+    device->free = N3DS_DeleteDevice;
+
+    device->device_caps = VIDEO_DEVICE_CAPS_FULLSCREEN_ONLY;
+
+    return device;
+}
+
+VideoBootStrap N3DS_bootstrap = { N3DSVID_DRIVER_NAME, "N3DS Video Driver", N3DS_CreateDevice, NULL, /* no ShowMessageBox implementation */ false };
+
+static bool N3DS_VideoInit(SDL_VideoDevice *_this)
+{
+    SDL_VideoData *internal = (SDL_VideoData *)_this->internal;
+
+    gfxInit(GSP_RGBA8_OES, GSP_RGBA8_OES, false);
+    hidInit();
+
+    internal->top_display = AddN3DSDisplay(GFX_TOP);
+    internal->touch_display = AddN3DSDisplay(GFX_BOTTOM);
+
+    N3DS_InitTouch();
+    N3DS_SwkbInit();
+
+    return true;
+}
+
+static bool AddN3DSDisplay(gfxScreen_t screen)
+{
+    SDL_DisplayMode mode;
+    SDL_DisplayModeData *modedata;
+    SDL_VideoDisplay display;
+    SDL_DisplayData *display_driver_data = SDL_calloc(1, sizeof(SDL_DisplayData));
+    if (!display_driver_data) {
+        return false;
+    }
+
+    SDL_zero(mode);
+    SDL_zero(display);
+
+    display_driver_data->screen = screen;
+
+    modedata = SDL_malloc(sizeof(SDL_DisplayModeData));
+    if (!modedata) {
+        return false;
+    }
+
+    mode.w = (screen == GFX_TOP) ? GSP_SCREEN_HEIGHT_TOP : GSP_SCREEN_HEIGHT_BOTTOM;
+    mode.h = GSP_SCREEN_WIDTH;
+    mode.refresh_rate = 60.0f;
+    mode.format = SDL_PIXELFORMAT_RGBA8888;
+    mode.internal = modedata;
+    modedata->fmt = GSP_RGBA8_OES;
+
+    display.name = (screen == GFX_TOP) ? "N3DS top screen" : "N3DS bottom screen";
+    display.desktop_mode = mode;
+    display.internal = display_driver_data;
+
+    if (SDL_AddVideoDisplay(&display, false) == 0) {
+        return false;
+    }
+    return true;
+}
+
+static void N3DS_VideoQuit(SDL_VideoDevice *_this)
+{
+    N3DS_SwkbQuit();
+    N3DS_QuitTouch();
+
+    hidExit();
+    gfxExit();
+}
+
+static bool N3DS_GetDisplayModes(SDL_VideoDevice *_this, SDL_VideoDisplay *display)
+{
+    SDL_DisplayData *displaydata = display->internal;
+    SDL_DisplayModeData *modedata;
+    SDL_DisplayMode mode;
+    int i;
+
+    for (i = 0; i < SDL_arraysize(format_map); i++) {
+        modedata = SDL_malloc(sizeof(SDL_DisplayModeData));
+        if (!modedata)
+            continue;
+
+        SDL_zero(mode);
+        mode.w = (displaydata->screen == GFX_TOP) ? GSP_SCREEN_HEIGHT_TOP : GSP_SCREEN_HEIGHT_BOTTOM;
+        mode.h = GSP_SCREEN_WIDTH;
+        mode.refresh_rate = 60.0f;
+        mode.format = format_map[i].pixfmt;
+        mode.internal = modedata;
+        modedata->fmt = format_map[i].gspfmt;
+
+        if (!SDL_AddFullscreenDisplayMode(display, &mode)) {
+            SDL_free(modedata);
+        }
+    }
+
+    return true;
+}
+
+static bool N3DS_SetDisplayMode(SDL_VideoDevice *_this, SDL_VideoDisplay *display, SDL_DisplayMode *mode)
+{
+    SDL_DisplayData *displaydata = display->internal;
+    SDL_DisplayModeData *modedata = mode->internal;
+
+    gfxSetScreenFormat(displaydata->screen, modedata->fmt);
+    return true;
+}
+
+static bool N3DS_GetDisplayBounds(SDL_VideoDevice *_this, SDL_VideoDisplay *display, SDL_Rect *rect)
+{
+    SDL_DisplayData *driver_data = display->internal;
+
+    if (!driver_data) {
+        return false;
+    }
+
+    rect->x = 0;
+    rect->y = (driver_data->screen == GFX_TOP) ? 0 : GSP_SCREEN_WIDTH;
+    rect->w = display->current_mode->w;
+    rect->h = display->current_mode->h;
+    return true;
+}
+
+static bool N3DS_CreateWindow(SDL_VideoDevice *_this, SDL_Window *window, SDL_PropertiesID create_props)
+{
+    SDL_DisplayData *display_data;
+    SDL_WindowData *window_data = (SDL_WindowData *)SDL_calloc(1, sizeof(SDL_WindowData));
+    if (!window_data) {
+        return false;
+    }
+    display_data = SDL_GetDisplayDriverDataForWindow(window);
+    window_data->screen = display_data->screen;
+    window->internal = window_data;
+    SDL_SetKeyboardFocus(window);
+    return true;
+}
+
+static void N3DS_DestroyWindow(SDL_VideoDevice *_this, SDL_Window *window)
+{
+    if (!window) {
+        return;
+    }
+    SDL_free(window->internal);
+}
+
+#endif // SDL_VIDEO_DRIVER_N3DS

vendor/sdl-3.2.10/src/video/n3ds/SDL_n3dsvideo.h

@@ -0,0 +1,41 @@
+/*
+  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.
+*/
+#include "SDL_internal.h"
+
+#ifndef SDL_n3dsvideo_h_
+#define SDL_n3dsvideo_h_
+
+#include <3ds.h>
+
+#include "../SDL_sysvideo.h"
+
+struct SDL_VideoData
+{
+    int top_display;
+    int touch_display;
+};
+
+struct SDL_WindowData
+{
+    gfxScreen_t screen; /**< Keeps track of which N3DS screen is targeted */
+};
+
+#endif // SDL_n3dsvideo_h_