opengl32: Make the GL driver function table const.

dlls/opengl32/make_opengl

@@ -920,7 +920,7 @@ foreach (sort keys %norm_functions)
 }
 print HEADER "\n\n";
 
-print HEADER "extern struct opengl_funcs *__wine_get_wgl_driver( HDC hdc, UINT version );\n\n";
+print HEADER "extern const struct opengl_funcs *__wine_get_wgl_driver( HDC hdc, UINT version );\n\n";
 print HEADER "#endif /* __WINE_WGL_DRIVER_H */\n";
 close HEADER;
 

dlls/opengl32/unix_private.h

@@ -43,9 +43,9 @@ extern const int extension_registry_size DECLSPEC_HIDDEN;
 
 extern struct opengl_funcs null_opengl_funcs DECLSPEC_HIDDEN;
 
-static inline struct opengl_funcs *get_dc_funcs( HDC hdc )
+static inline const struct opengl_funcs *get_dc_funcs( HDC hdc )
 {
-    struct opengl_funcs *funcs = __wine_get_wgl_driver( hdc, WINE_WGL_DRIVER_VERSION );
+    const struct opengl_funcs *funcs = __wine_get_wgl_driver( hdc, WINE_WGL_DRIVER_VERSION );
     if (!funcs) RtlSetLastWin32Error( ERROR_INVALID_HANDLE );
     else if (funcs == (void *)-1) funcs = &null_opengl_funcs;
     return funcs;

dlls/opengl32/unix_wgl.c

@@ -77,7 +77,7 @@ struct opengl_context
 struct wgl_handle
 {
     UINT handle;
-    struct opengl_funcs *funcs;
+    const struct opengl_funcs *funcs;
     union
     {
         struct opengl_context *context; /* for HANDLE_CONTEXT */
@@ -117,7 +117,7 @@ static struct wgl_handle *get_handle_ptr( HANDLE handle, enum wgl_handle_type ty
     return NULL;
 }
 
-static HANDLE alloc_handle( enum wgl_handle_type type, struct opengl_funcs *funcs, void *user_ptr )
+static HANDLE alloc_handle( enum wgl_handle_type type, const struct opengl_funcs *funcs, void *user_ptr )
 {
     HANDLE handle = 0;
     struct wgl_handle *ptr = NULL;
@@ -647,7 +647,7 @@ static HGLRC wrap_wglCreateContext( HDC hdc )
     HGLRC ret = 0;
     struct wgl_context *drv_ctx;
     struct opengl_context *context;
-    struct opengl_funcs *funcs = get_dc_funcs( hdc );
+    const struct opengl_funcs *funcs = get_dc_funcs( hdc );
 
     if (!funcs) return 0;
     if (!(drv_ctx = funcs->wgl.p_wglCreateContext( hdc ))) return 0;
@@ -679,7 +679,7 @@ static BOOL wrap_wglMakeCurrent( TEB *teb, HDC hdc, HGLRC hglrc )
                 teb->glReserved1[0] = hdc;
                 teb->glReserved1[1] = hdc;
                 teb->glCurrentRC = hglrc;
-                teb->glTable = ptr->funcs;
+                teb->glTable = (void *)ptr->funcs;
             }
         }
         else
@@ -751,7 +751,7 @@ static HGLRC wrap_wglCreateContextAttribsARB( HDC hdc, HGLRC share, const int *a
     struct wgl_context *drv_ctx;
     struct wgl_handle *share_ptr = NULL;
     struct opengl_context *context;
-    struct opengl_funcs *funcs = get_dc_funcs( hdc );
+    const struct opengl_funcs *funcs = get_dc_funcs( hdc );
 
     if (!funcs)
     {
@@ -796,7 +796,7 @@ static HPBUFFERARB wrap_wglCreatePbufferARB( HDC hdc, int format, int width, int
 {
     HPBUFFERARB ret;
     struct wgl_pbuffer *pbuffer;
-    struct opengl_funcs *funcs = get_dc_funcs( hdc );
+    const struct opengl_funcs *funcs = get_dc_funcs( hdc );
 
     if (!funcs || !funcs->ext.p_wglCreatePbufferARB) return 0;
     if (!(pbuffer = funcs->ext.p_wglCreatePbufferARB( hdc, format, width, height, attribs ))) return 0;
@@ -842,7 +842,7 @@ static BOOL wrap_wglMakeContextCurrentARB( TEB *teb, HDC draw_hdc, HDC read_hdc,
                 teb->glReserved1[0] = draw_hdc;
                 teb->glReserved1[1] = read_hdc;
                 teb->glCurrentRC = hglrc;
-                teb->glTable = ptr->funcs;
+                teb->glTable = (void *)ptr->funcs;
             }
         }
         else

dlls/win32u/dc.c

@@ -1490,7 +1490,7 @@ BOOL WINAPI __wine_get_icm_profile( HDC hdc, BOOL allow_default, DWORD *size, WC
 /***********************************************************************
  *      __wine_get_wgl_driver  (win32u.@)
  */
-struct opengl_funcs *__wine_get_wgl_driver( HDC hdc, UINT version )
+const struct opengl_funcs *__wine_get_wgl_driver( HDC hdc, UINT version )
 {
     BOOL is_display, is_memdc;
     DC *dc;

include/wine/wgl_driver.h

@@ -3405,6 +3405,6 @@ struct opengl_funcs
     USE_GL_FUNC(glVertexPointer) \
     USE_GL_FUNC(glViewport)
 
-extern struct opengl_funcs *__wine_get_wgl_driver( HDC hdc, UINT version );
+extern const struct opengl_funcs *__wine_get_wgl_driver( HDC hdc, UINT version );
 
 #endif /* __WINE_WGL_DRIVER_H */