yuzu_cmd: Make use of fullscreen_mode setting

Reverts 48259de0c1a6a1aca77eec31cb8aca5ca2b680dd to the previous
hierarchy and fixes the resolution issue with this fullscreen mode.
yuzu-cmd will now read the fullscreen_mode setting and use it
appropriately.

src/yuzu_cmd/config.cpp

@@ -446,6 +446,7 @@ void Config::ReadValues() {
     ReadSetting("Renderer", Settings::values.renderer_debug);
     ReadSetting("Renderer", Settings::values.vulkan_device);
 
+    ReadSetting("Renderer", Settings::values.fullscreen_mode);
     ReadSetting("Renderer", Settings::values.aspect_ratio);
     ReadSetting("Renderer", Settings::values.max_anisotropy);
     ReadSetting("Renderer", Settings::values.use_frame_limit);

src/yuzu_cmd/default_ini.h

@@ -224,6 +224,10 @@ debug =
 # Which Vulkan physical device to use (defaults to 0)
 vulkan_device =
 
+# Whether to use fullscreen or borderless window mode
+# 0 (Windows default): Borderless window, 1 (All other default): Exclusive fullscreen
+fullscreen_mode =
+
 # Aspect ratio
 # 0: Default (16:9), 1: Force 4:3, 2: Force 21:9, 3: Stretch to Window
 aspect_ratio =

src/yuzu_cmd/emu_window/emu_window_sdl2.cpp

@@ -6,6 +6,7 @@
 
 #include "common/logging/log.h"
 #include "common/scm_rev.h"
+#include "common/settings.h"
 #include "core/core.h"
 #include "core/perf_stats.h"
 #include "input_common/keyboard.h"
@@ -122,24 +123,37 @@ void EmuWindow_SDL2::OnResize() {
 }
 
 void EmuWindow_SDL2::Fullscreen() {
-    // Try a different fullscreening method
-    LOG_INFO(Frontend, "Attempting to use borderless fullscreen...");
-    if (SDL_SetWindowFullscreen(render_window, SDL_WINDOW_FULLSCREEN_DESKTOP) == 0) {
-        return;
+    switch (Settings::values.fullscreen_mode.GetValue()) {
+    case 1: // Exclusive fullscreen
+        // Set window size to render size before entering fullscreen -- SDL does not resize to
+        // display dimensions in this mode.
+        // TODO: Multiply the window size by resolution_factor (for both docked modes)
+        if (Settings::values.use_docked_mode) {
+            SDL_SetWindowSize(render_window, Layout::ScreenDocked::Width,
+                              Layout::ScreenDocked::Height);
         }
 
-    LOG_ERROR(Frontend, "Borderless fullscreening failed: {}", SDL_GetError());
-
         if (SDL_SetWindowFullscreen(render_window, SDL_WINDOW_FULLSCREEN) == 0) {
             return;
         }
 
         LOG_ERROR(Frontend, "Fullscreening failed: {}", SDL_GetError());
+        LOG_INFO(Frontend, "Attempting to use borderless fullscreen...");
+        [[fallthrough]];
+    case 0: // Borderless window
+        if (SDL_SetWindowFullscreen(render_window, SDL_WINDOW_FULLSCREEN_DESKTOP) == 0) {
+            return;
+        }
 
+        LOG_ERROR(Frontend, "Borderless fullscreening failed: {}", SDL_GetError());
+        [[fallthrough]];
+    default:
         // Fallback algorithm: Maximise window.
         // Works on all systems (unless something is seriously wrong), so no fallback for this one.
         LOG_INFO(Frontend, "Falling back on a maximised window...");
         SDL_MaximizeWindow(render_window);
+        break;
+    }
 }
 
 void EmuWindow_SDL2::WaitEvent() {