1 files changed, 259 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/video/n3ds/SDL_n3dsvideo.c b/contrib/SDL-3.2.8/src/video/n3ds/SDL_n3dsvideo.c
new file mode 100644
index 0000000..8e925bf
--- /dev/null
+++ b/contrib/SDL-3.2.8/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