settings: restore the recommended MKW settings prompt

Apply accepted settings visibly and save them, then reapply after per-game configuration. Include handheld mode.

Assisted by Codex.

2 files changed, 31 insertions, 0 deletions

diff --git a/src/yuzu/main_window.cpp b/src/yuzu/main_window.cpp
index e5a8f81424..d0cd130f6f 100644
--- a/src/yuzu/main_window.cpp
+++ b/src/yuzu/main_window.cpp
@@ -10,6 +10,7 @@
 
 #include <boost/algorithm/string/split.hpp>
 #include "common/fs/path_util.h"
+#include "common/game_presets.h"
 #include "common/settings.h"
 #include "common/settings_enums.h"
 #include "frontend_common/settings_generator.h"
@@ -457,6 +458,29 @@ MainWindow::MainWindow(bool has_broken_vulkan)
     // Gen keys if necessary
     OnCheckFirmwareDecryption(false);
 
+    auto* recommendations = new QMessageBox(
+        QMessageBox::Question, tr("Recommended Mario Kart World settings"),
+        tr("Use the recommended settings for Mario Kart World?\n\n"
+           "Vulkan, 1x resolution, GPU Fast, asynchronous shaders, BC3, conservative VRAM, "
+           "reactive flushing off, FIFO Relaxed VSync, and handheld mode.\n\n"
+           "Yes replaces your saved settings. No or closing this window keeps your settings."),
+        QMessageBox::Yes | QMessageBox::No, this);
+    recommendations->setAttribute(Qt::WA_DeleteOnClose);
+    recommendations->setDefaultButton(QMessageBox::No);
+    recommendations->setEscapeButton(QMessageBox::No);
+    recommendations->setWindowModality(Qt::NonModal);
+    connect(recommendations, &QMessageBox::finished, this, [this](int result) {
+        use_recommended_mkw_settings = result == QMessageBox::Yes;
+        if (use_recommended_mkw_settings && !emulation_running && !boot_in_progress) {
+            Settings::SetMarioKartWorldRecommendedSettings(Settings::values, true);
+            config->SaveAllValues();
+            QtCommon::system->ApplySettings();
+            UpdateStatusButtons();
+        }
+        LOG_INFO(Config, "MKW recommended settings accepted: {}", use_recommended_mkw_settings);
+    });
+    recommendations->show();
+
 #ifdef __unix__
     OnCheckGraphicsBackend();
 #endif
@@ -1964,6 +1988,12 @@ void MainWindow::BootGame(const QString& filename, Service::AM::FrontendAppletPa
         QtCommon::system->ApplySettings();
     }
 
+    if (Settings::ApplyMarioKartWorldPreset(Settings::values, title_id,
+                                          use_recommended_mkw_settings)) {
+        QtCommon::system->ApplySettings();
+        Settings::UpdateGPUAccuracy();
+        LOG_INFO(Config, "Applied recommended MKW settings after per-game configuration");
+    }
     Settings::LogSettings();
 
     if (UISettings::values.select_user_on_boot && !user_flag_cmd_line) {
diff --git a/src/yuzu/main_window.h b/src/yuzu/main_window.h
index e2c5a0f6db..6fe967267a 100644
--- a/src/yuzu/main_window.h
+++ b/src/yuzu/main_window.h
@@ -501,6 +501,7 @@ private:
 #endif
 
     MultiplayerState* multiplayer_state = nullptr;
+    bool use_recommended_mkw_settings = false;
 
     GRenderWindow* render_window = nullptr;
     GameList* game_list = nullptr;