From 0bed4a91b93c9afd933ce4337fb06e70c5dfbcdf Mon Sep 17 00:00:00 2001
From: SamuelFontes <samuguel@hotmail.com.br>
Date: Sun, 11 Aug 2024 12:55:07 -0300
Subject: [PATCH] qt-gui: Added GPU device selection functionality

---
 src/common/config.cpp          |  5 +++++
 src/common/config.h            |  1 +
 src/qt_gui/settings_dialog.cpp | 16 +++++++++++++++-
 3 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/common/config.cpp b/src/common/config.cpp
index 3cf9af150..a65a5b596 100644
--- a/src/common/config.cpp
+++ b/src/common/config.cpp
@@ -124,6 +124,10 @@ bool vkValidationGpuEnabled() {
     return vkValidationGpu;
 }
 
+void setGpuId(s32 selectedGpuId) {
+    gpuId = selectedGpuId;
+}
+
 void setScreenWidth(u32 width) {
     screenWidth = width;
 }
@@ -451,6 +455,7 @@ void setDefaultValues() {
     vkValidation = false;
     rdocEnable = false;
     m_language = 1;
+    gpuId = -1;
 }
 
 } // namespace Config
diff --git a/src/common/config.h b/src/common/config.h
index 37ace79c3..970550281 100644
--- a/src/common/config.h
+++ b/src/common/config.h
@@ -36,6 +36,7 @@ void setNullGpu(bool enable);
 void setDumpShaders(bool enable);
 void setDumpPM4(bool enable);
 void setVblankDiv(u32 value);
+void setGpuId(s32 selectedGpuId);
 void setScreenWidth(u32 width);
 void setScreenHeight(u32 height);
 void setFullscreenMode(bool enable);
diff --git a/src/qt_gui/settings_dialog.cpp b/src/qt_gui/settings_dialog.cpp
index 722abe7e0..9d3a7a2ac 100644
--- a/src/qt_gui/settings_dialog.cpp
+++ b/src/qt_gui/settings_dialog.cpp
@@ -3,6 +3,7 @@
 
 #include "settings_dialog.h"
 #include "ui_settings_dialog.h"
+#include "video_core/renderer_vulkan/vk_instance.h"
 
 SettingsDialog::SettingsDialog(QWidget* parent) : QDialog(parent), ui(new Ui::SettingsDialog) {
     ui->setupUi(this);
@@ -40,7 +41,10 @@ SettingsDialog::SettingsDialog(QWidget* parent) : QDialog(parent), ui(new Ui::Se
 
     // GPU TAB
     {
-        // TODO: Implement graphics device changing
+        // First options is auto selection -1, so gpuId on the GUI will always have to subtract 1
+        // when setting and add 1 when getting to select the correct gpu in Qt
+        connect(ui->graphicsAdapterBox, &QComboBox::currentIndexChanged, this,
+                [](int index) { Config::setGpuId(index - 1); });
 
         connect(ui->widthSpinBox, &QSpinBox::valueChanged, this,
                 [](int val) { Config::setScreenWidth(val); });
@@ -98,6 +102,16 @@ SettingsDialog::SettingsDialog(QWidget* parent) : QDialog(parent), ui(new Ui::Se
 void SettingsDialog::LoadValuesFromConfig() {
     ui->consoleLanguageComboBox->setCurrentIndex(Config::GetLanguage());
 
+    // Add list of available GPUs
+    ui->graphicsAdapterBox->addItem("Auto Select"); // -1, auto selection
+    Vulkan::Instance instance(false, false);
+    auto physical_devices = instance.GetPhysicalDevices();
+    for (const vk::PhysicalDevice physical_device : physical_devices) {
+        const QString name = QString::fromUtf8(physical_device.getProperties().deviceName, -1);
+        ui->graphicsAdapterBox->addItem(name);
+    }
+
+    ui->graphicsAdapterBox->setCurrentIndex(Config::getGpuId() + 1);
     ui->widthSpinBox->setValue(Config::getScreenWidth());
     ui->heightSpinBox->setValue(Config::getScreenHeight());
     ui->vblankSpinBox->setValue(Config::vblankDiv());