From ea46efd9a2713d28936141066e3d4418f28c4648 Mon Sep 17 00:00:00 2001
From: lat9nq <22451773+lat9nq@users.noreply.github.com>
Date: Mon, 4 Sep 2023 20:21:14 -0400
Subject: [PATCH] configure_graphics: Fix handling of broken Vulkan

The VSync combobox wouldn't populate if there was no Vulkan device,
which caused issues with trying to set VSync on other backends.

This also adds another layer to GetCurrentGraphicsBackend to check for
broken Vulkan and return OpenGL instead of Vulkan.
---
 src/yuzu/configuration/configure_graphics.cpp | 28 +++++++++++--------
 1 file changed, 16 insertions(+), 12 deletions(-)

diff --git a/src/yuzu/configuration/configure_graphics.cpp b/src/yuzu/configuration/configure_graphics.cpp
index 8622dc184..f36a0cae7 100644
--- a/src/yuzu/configuration/configure_graphics.cpp
+++ b/src/yuzu/configuration/configure_graphics.cpp
@@ -193,14 +193,10 @@ void ConfigureGraphics::PopulateVSyncModeSelection() {
                             : vsync_mode_combobox_enum_map[current_index];
     int index{};
     const int device{vulkan_device_combobox->currentIndex()}; //< current selected Vulkan device
-    if (device == -1) {
-        // Invalid device
-        return;
-    }
 
     const auto& present_modes = //< relevant vector of present modes for the selected device or API
-        backend == Settings::RendererBackend::Vulkan ? device_present_modes[device]
-                                                     : default_present_modes;
+        backend == Settings::RendererBackend::Vulkan && device > -1 ? device_present_modes[device]
+                                                                    : default_present_modes;
 
     vsync_mode_combobox->clear();
     vsync_mode_combobox_enum_map.clear();
@@ -497,11 +493,19 @@ void ConfigureGraphics::RetrieveVulkanDevices() {
 }
 
 Settings::RendererBackend ConfigureGraphics::GetCurrentGraphicsBackend() const {
-    if (!Settings::IsConfiguringGlobal() && !api_restore_global_button->isEnabled()) {
-        return Settings::values.renderer_backend.GetValue(true);
+    const auto selected_backend = [=]() {
+        if (!Settings::IsConfiguringGlobal() && !api_restore_global_button->isEnabled()) {
+            return Settings::values.renderer_backend.GetValue(true);
+        }
+        return static_cast<Settings::RendererBackend>(
+            combobox_translations.at(Settings::EnumMetadata<Settings::RendererBackend>::Index())
+                .at(api_combobox->currentIndex())
+                .first);
+    }();
+
+    if (selected_backend == Settings::RendererBackend::Vulkan &&
+        UISettings::values.has_broken_vulkan) {
+        return Settings::RendererBackend::OpenGL;
     }
-    return static_cast<Settings::RendererBackend>(
-        combobox_translations.at(Settings::EnumMetadata<Settings::RendererBackend>::Index())
-            .at(api_combobox->currentIndex())
-            .first);
+    return selected_backend;
 }