Merge pull request #8134 from bparker06/gdi_fallback

win32: force video driver to gdi if no accelerated graphics driver is found

gfx/drivers/gl.c

@@ -1789,6 +1789,12 @@ static void *gl_init(const video_info_t *video,
    if (!string_is_empty(version))
       sscanf(version, "%d.%d", &gl->version_major, &gl->version_minor);
 
+#ifdef _WIN32
+   if (string_is_equal(vendor, "Microsoft Corporation"))
+      if (string_is_equal(renderer, "GDI Generic"))
+         rarch_force_video_driver_fallback("gdi");
+#endif
+
    hwr = video_driver_get_hw_context();
 
    if (hwr->context_type == RETRO_HW_CONTEXT_OPENGL_CORE)

intl/msg_hash_us.h

@@ -8112,3 +8112,7 @@ MSG_HASH(
     MENU_ENUM_LABEL_VALUE_DOWN_SELECT,
     "Down + Select"
     )
+MSG_HASH(
+    MENU_ENUM_LABEL_VALUE_VIDEO_DRIVER_FALLBACK,
+    "Your graphics driver is not compatible with the current video driver in RetroArch, falling back to the %s driver. Please restart RetroArch for the changes to take effect."
+    )

msg_hash.h

@@ -2243,6 +2243,7 @@ enum msg_hash_enums
    MENU_LABEL(MENU_SOUND_CANCEL),
    MENU_LABEL(MENU_SOUND_NOTICE),
    MENU_LABEL(MENU_SOUND_BGM),
+   MENU_ENUM_LABEL_VALUE_VIDEO_DRIVER_FALLBACK,
 
    MSG_LAST
 };

retroarch.c

@@ -3769,3 +3769,39 @@ char *get_retroarch_launch_arguments(void)
 {
    return launch_arguments;
 }
+
+void rarch_force_video_driver_fallback(const char *driver)
+{
+   settings_t *settings = config_get_ptr();
+   ui_msg_window_t *msg_window = NULL;
+
+   strlcpy(settings->arrays.video_driver, driver, sizeof(settings->arrays.video_driver));
+
+   command_event(CMD_EVENT_MENU_SAVE_CURRENT_CONFIG, NULL);
+
+#ifdef _WIN32
+   /* UI companion driver is not inited yet, just call into it directly */
+   msg_window = &ui_msg_window_win32;
+#endif
+
+   if (msg_window)
+   {
+      ui_msg_window_state window_state = {0};
+      char *title = strdup(msg_hash_to_str(MSG_ERROR));
+      char text[PATH_MAX_LENGTH];
+
+      text[0] = '\0';
+
+      snprintf(text, sizeof(text), msg_hash_to_str(MENU_ENUM_LABEL_VALUE_VIDEO_DRIVER_FALLBACK), driver);
+
+      window_state.buttons = UI_MSG_WINDOW_OK;
+      window_state.title = title;
+      window_state.text = strdup(text);
+
+      msg_window->error(&window_state);
+
+      free(title);
+   }
+
+   exit(1);
+}

retroarch.h

@@ -404,6 +404,8 @@ void runloop_msg_queue_lock(void);
 void runloop_msg_queue_unlock(void);
 #endif
 
+void rarch_force_video_driver_fallback(const char *driver);
+
 RETRO_END_DECLS
 
 #endif