select.lua: open context_menu.lua in d3d11 exclusive fullscreen

Load context_menu.lua when --d3d11-exclusive-fs is enabled and open it
instead of the native context menu. Native context menu cannot be
displayed over the exlusive window.

Fixes: #18181

DOCS/man/context_menu.rst

@@ -42,7 +42,8 @@ On platforms without integration with the native context menu,
 ``context_menu.lua`` can be disabled entirely using the
 ``--load-context-menu=no`` option. On platforms where the integration is
 implemented, it is already disabled by default, and ``--load-context-menu=yes``
-will make ``select.lua`` use it.
+will make ``select.lua`` use it. It is also loaded when ``--d3d11-exclusive-fs``
+is enabled, and ``select.lua`` uses it in exclusive fullscreen.
 
 Script messages
 ---------------

player/lua/select.lua

@@ -1423,6 +1423,14 @@ if options.populate_menu_data then
     mp.observe_property("vo-configured", "native", parse_menu_conf)
 end
 
+-- The native menu can't be shown over a D3D11 exclusive fullscreen output.
+local function use_context_menu_lua()
+    return mp.get_property_native("load-context-menu") or
+           (mp.get_property("current-gpu-context") == "d3d11" and
+            mp.get_property_native("fullscreen") and
+            mp.get_property_native("d3d11-exclusive-fs"))
+end
+
 mp.add_key_binding(nil, "context-menu", function (info)
     if info.event == "repeat" then
         return
@@ -1430,11 +1438,11 @@ mp.add_key_binding(nil, "context-menu", function (info)
 
     if not info.is_mouse then
         if info.event == "down" or info.event == "press" then
-            mp.command(mp.get_property_native("load-context-menu")
+            mp.command(use_context_menu_lua()
                            and "script-message-to context_menu open"
                            or "context-menu")
         end
-    elseif mp.get_property_native("load-context-menu") then
+    elseif use_context_menu_lua() then
         mp.commandv("script-message-to", "context_menu",
                     info.event == "down" and "open" or "select")
     elseif info.event == (platform == "windows" and "up" or "down") then

player/scripting.c

@@ -270,7 +270,11 @@ void mp_load_builtin_scripts(struct MPContext *mpctx)
     load_builtin_script(mpctx, 5, mpctx->opts->lua_load_select, "@select.lua");
     load_builtin_script(mpctx, 6, mpctx->opts->lua_load_positioning, "@positioning.lua");
     load_builtin_script(mpctx, 7, mpctx->opts->lua_load_commands, "@commands.lua");
-    load_builtin_script(mpctx, 8, mpctx->opts->lua_load_context_menu, "@context_menu.lua");
+
+    // select.lua uses context_menu.lua in D3D11 exclusive fullscreen.
+    struct m_config_option *co = m_config_get_co(mpctx->mconfig, bstr0("d3d11-exclusive-fs"));
+    bool context_menu = mpctx->opts->lua_load_context_menu || (co && *(bool *)co->data);
+    load_builtin_script(mpctx, 8, context_menu, "@context_menu.lua");
 }
 
 bool mp_load_scripts(struct MPContext *mpctx)

video/out/d3d11/context.c

@@ -86,7 +86,8 @@ const struct m_sub_options d3d11_conf = {
             {"bt.2020", DXGI_COLOR_SPACE_RGB_FULL_G22_NONE_P2020}),
             .flags = UPDATE_VO,
         },
-        {"d3d11-exclusive-fs", OPT_BOOL(exclusive_fs)},
+        {"d3d11-exclusive-fs", OPT_BOOL(exclusive_fs),
+            .flags = UPDATE_BUILTIN_SCRIPTS},
         {"d3d11-output-mode", OPT_CHOICE(output_mode,
             {"auto", -1},
             {"window", 0},