chore(build): use SDL3

vendor/sdl-3.2.10/src/loadso/windows/SDL_sysloadso.c

@@ -0,0 +1,68 @@
+/*
+  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_LOADSO_WINDOWS
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+// System dependent library loading routines
+
+#include "../../core/windows/SDL_windows.h"
+
+SDL_SharedObject *SDL_LoadObject(const char *sofile)
+{
+    if (!sofile) {
+        SDL_InvalidParamError("sofile");
+        return NULL;
+    }
+
+    LPWSTR wstr = WIN_UTF8ToStringW(sofile);
+    HMODULE handle = LoadLibraryW(wstr);
+    SDL_free(wstr);
+
+    // Generate an error message if all loads failed
+    if (!handle) {
+        char errbuf[512];
+        SDL_snprintf(errbuf, sizeof (errbuf), "Failed loading %s", sofile);
+        WIN_SetError(errbuf);
+    }
+    return (SDL_SharedObject *) handle;
+}
+
+SDL_FunctionPointer SDL_LoadFunction(SDL_SharedObject *handle, const char *name)
+{
+    SDL_FunctionPointer symbol = (SDL_FunctionPointer)GetProcAddress((HMODULE)handle, name);
+    if (!symbol) {
+        char errbuf[512];
+        SDL_snprintf(errbuf, sizeof (errbuf), "Failed loading %s", name);
+        WIN_SetError(errbuf);
+    }
+    return symbol;
+}
+
+void SDL_UnloadObject(SDL_SharedObject *handle)
+{
+    if (handle) {
+        FreeLibrary((HMODULE)handle);
+    }
+}
+
+#endif // SDL_LOADSO_WINDOWS