1 files changed, 211 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/video/x11/SDL_x11dyn.c b/contrib/SDL-3.2.8/src/video/x11/SDL_x11dyn.c
new file mode 100644
index 0000000..7c48ed5
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/video/x11/SDL_x11dyn.c
@@ -0,0 +1,211 @@
+/*
+  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_X11
+
+#define DEBUG_DYNAMIC_X11 0
+
+#include "SDL_x11dyn.h"
+
+#if DEBUG_DYNAMIC_X11
+#include <stdio.h>
+#endif
+
+#ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC
+
+typedef struct
+{
+    SDL_SharedObject *lib;
+    const char *libname;
+} x11dynlib;
+
+#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT
+#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT NULL
+#endif
+#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR
+#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR NULL
+#endif
+#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2
+#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2 NULL
+#endif
+#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XFIXES
+#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XFIXES NULL
+#endif
+#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR
+#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR NULL
+#endif
+#ifndef SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS
+#define SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS NULL
+#endif
+
+static x11dynlib x11libs[] = {
+    { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC },
+    { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XEXT },
+    { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XCURSOR },
+    { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XINPUT2 },
+    { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XFIXES },
+    { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XRANDR },
+    { NULL, SDL_VIDEO_DRIVER_X11_DYNAMIC_XSS }
+};
+
+static void *X11_GetSym(const char *fnname, int *pHasModule)
+{
+    int i;
+    void *fn = NULL;
+    for (i = 0; i < SDL_arraysize(x11libs); i++) {
+        if (x11libs[i].lib) {
+            fn = SDL_LoadFunction(x11libs[i].lib, fnname);
+            if (fn) {
+                break;
+            }
+        }
+    }
+
+#if DEBUG_DYNAMIC_X11
+    if (fn)
+        printf("X11: Found '%s' in %s (%p)\n", fnname, x11libs[i].libname, fn);
+    else
+        printf("X11: Symbol '%s' NOT FOUND!\n", fnname);
+#endif
+
+    if (!fn) {
+        *pHasModule = 0; // kill this module.
+    }
+
+    return fn;
+}
+
+#endif // SDL_VIDEO_DRIVER_X11_DYNAMIC
+
+// Define all the function pointers and wrappers...
+#define SDL_X11_SYM(rc, fn, params, args, ret) SDL_DYNX11FN_##fn X11_##fn = NULL;
+#include "SDL_x11sym.h"
+
+// Annoying varargs entry point...
+#ifdef X_HAVE_UTF8_STRING
+SDL_DYNX11FN_XCreateIC X11_XCreateIC = NULL;
+SDL_DYNX11FN_XGetICValues X11_XGetICValues = NULL;
+SDL_DYNX11FN_XSetICValues X11_XSetICValues = NULL;
+SDL_DYNX11FN_XVaCreateNestedList X11_XVaCreateNestedList = NULL;
+#endif
+
+/* These SDL_X11_HAVE_* flags are here whether you have dynamic X11 or not. */
+#define SDL_X11_MODULE(modname) int SDL_X11_HAVE_##modname = 0;
+#include "SDL_x11sym.h"
+
+static int x11_load_refcount = 0;
+
+void SDL_X11_UnloadSymbols(void)
+{
+    // Don't actually unload if more than one module is using the libs...
+    if (x11_load_refcount > 0) {
+        if (--x11_load_refcount == 0) {
+#ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC
+            int i;
+#endif
+
+            // set all the function pointers to NULL.
+#define SDL_X11_MODULE(modname)                SDL_X11_HAVE_##modname = 0;
+#define SDL_X11_SYM(rc, fn, params, args, ret) X11_##fn = NULL;
+#include "SDL_x11sym.h"
+
+#ifdef X_HAVE_UTF8_STRING
+            X11_XCreateIC = NULL;
+            X11_XGetICValues = NULL;
+            X11_XSetICValues = NULL;
+            X11_XVaCreateNestedList = NULL;
+#endif
+
+#ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC
+            for (i = 0; i < SDL_arraysize(x11libs); i++) {
+                if (x11libs[i].lib) {
+                    SDL_UnloadObject(x11libs[i].lib);
+                    x11libs[i].lib = NULL;
+                }
+            }
+#endif
+        }
+    }
+}
+
+// returns non-zero if all needed symbols were loaded.
+bool SDL_X11_LoadSymbols(void)
+{
+    bool result = true; // always succeed if not using Dynamic X11 stuff.
+
+    // deal with multiple modules (dga, x11, etc) needing these symbols...
+    if (x11_load_refcount++ == 0) {
+#ifdef SDL_VIDEO_DRIVER_X11_DYNAMIC
+        int i;
+        int *thismod = NULL;
+        for (i = 0; i < SDL_arraysize(x11libs); i++) {
+            if (x11libs[i].libname) {
+                x11libs[i].lib = SDL_LoadObject(x11libs[i].libname);
+            }
+        }
+
+#define SDL_X11_MODULE(modname) SDL_X11_HAVE_##modname = 1; // default yes
+#include "SDL_x11sym.h"
+
+#define SDL_X11_MODULE(modname)     thismod = &SDL_X11_HAVE_##modname;
+#define SDL_X11_SYM(a, fn, x, y, z) X11_##fn = (SDL_DYNX11FN_##fn)X11_GetSym(#fn, thismod);
+#include "SDL_x11sym.h"
+
+#ifdef X_HAVE_UTF8_STRING
+        X11_XCreateIC = (SDL_DYNX11FN_XCreateIC)
+            X11_GetSym("XCreateIC", &SDL_X11_HAVE_UTF8);
+        X11_XGetICValues = (SDL_DYNX11FN_XGetICValues)
+            X11_GetSym("XGetICValues", &SDL_X11_HAVE_UTF8);
+        X11_XSetICValues = (SDL_DYNX11FN_XSetICValues)
+            X11_GetSym("XSetICValues", &SDL_X11_HAVE_UTF8);
+        X11_XVaCreateNestedList = (SDL_DYNX11FN_XVaCreateNestedList)
+            X11_GetSym("XVaCreateNestedList", &SDL_X11_HAVE_UTF8);
+#endif
+
+        if (SDL_X11_HAVE_BASEXLIB) {
+            // all required symbols loaded.
+            SDL_ClearError();
+        } else {
+            // in case something got loaded...
+            SDL_X11_UnloadSymbols();
+            result = false;
+        }
+
+#else // no dynamic X11
+
+#define SDL_X11_MODULE(modname)     SDL_X11_HAVE_##modname = 1; // default yes
+#define SDL_X11_SYM(a, fn, x, y, z) X11_##fn = (SDL_DYNX11FN_##fn)fn;
+#include "SDL_x11sym.h"
+
+#ifdef X_HAVE_UTF8_STRING
+        X11_XCreateIC = XCreateIC;
+        X11_XGetICValues = XGetICValues;
+        X11_XSetICValues = XSetICValues;
+        X11_XVaCreateNestedList = XVaCreateNestedList;
+#endif
+#endif
+    }
+
+    return result;
+}
+
+#endif // SDL_VIDEO_DRIVER_X11