5 files changed, 316 insertions, 57 deletions

diff --git a/src/video_core/rasterizer_interface.h b/src/video_core/rasterizer_interface.h
index 06fc59dbe..ff5310848 100644
--- a/src/video_core/rasterizer_interface.h
+++ b/src/video_core/rasterizer_interface.h
@@ -4,6 +4,7 @@
 
 #pragma once
 
+#include <functional>
 #include "common/common_types.h"
 #include "video_core/engines/fermi_2d.h"
 #include "video_core/gpu.h"
@@ -11,6 +12,14 @@
 
 namespace VideoCore {
 
+enum class LoadCallbackStage {
+    Prepare,
+    Decompile,
+    Build,
+    Complete,
+};
+using DiskResourceLoadCallback = std::function<void(LoadCallbackStage, std::size_t, std::size_t)>;
+
 class RasterizerInterface {
 public:
     virtual ~RasterizerInterface() {}
diff --git a/src/yuzu/loading_screen.cpp b/src/yuzu/loading_screen.cpp
index 0f3c4bb6c..907aac4f1 100644
--- a/src/yuzu/loading_screen.cpp
+++ b/src/yuzu/loading_screen.cpp
@@ -2,8 +2,10 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <unordered_map>
 #include <QBuffer>
 #include <QByteArray>
+#include <QGraphicsOpacityEffect>
 #include <QHBoxLayout>
 #include <QIODevice>
 #include <QImage>
@@ -12,11 +14,14 @@
 #include <QPalette>
 #include <QPixmap>
 #include <QProgressBar>
+#include <QPropertyAnimation>
 #include <QStyleOption>
-#include <QWindow>
+#include <QTime>
+#include <QtConcurrent/QtConcurrentRun>
 #include "common/logging/log.h"
 #include "core/loader/loader.h"
 #include "ui_loading_screen.h"
+#include "video_core/rasterizer_interface.h"
 #include "yuzu/loading_screen.h"
 
 // Mingw seems to not have QMovie at all. If QMovie is missing then use a single frame instead of an
@@ -25,11 +30,84 @@
 #include <QMovie>
 #endif
 
+constexpr const char PROGRESSBAR_STYLE_PREPARE[] = R"(
+QProgressBar {}
+QProgressBar::chunk {})";
+
+constexpr const char PROGRESSBAR_STYLE_DECOMPILE[] = R"(
+QProgressBar {
+  background-color: black;
+  border: 2px solid white;
+  border-radius: 4px;
+  padding: 2px;
+}
+QProgressBar::chunk {
+  background-color: #0ab9e6;
+})";
+
+constexpr const char PROGRESSBAR_STYLE_BUILD[] = R"(
+QProgressBar {
+  background-color: black;
+  border: 2px solid white;
+  border-radius: 4px;
+  padding: 2px;
+}
+QProgressBar::chunk {
+ background-color: #ff3c28;
+})";
+
+constexpr const char PROGRESSBAR_STYLE_COMPLETE[] = R"(
+QProgressBar {
+  background-color: #0ab9e6;
+  border: 2px solid white;
+  border-radius: 4px;
+  padding: 2px;
+}
+QProgressBar::chunk {
+  background-color: #ff3c28;
+})";
+
 LoadingScreen::LoadingScreen(QWidget* parent)
-    : QWidget(parent), ui(std::make_unique<Ui::LoadingScreen>()) {
+    : QWidget(parent), ui(std::make_unique<Ui::LoadingScreen>()),
+      previous_stage(VideoCore::LoadCallbackStage::Complete) {
     ui->setupUi(this);
-    // Progress bar is hidden until we have a use for it.
-    ui->progress_bar->hide();
+    setMinimumSize(1280, 720);
+
+    // Create a fade out effect to hide this loading screen widget.
+    // When fading opacity, it will fade to the parent widgets background color, which is why we
+    // create an internal widget named fade_widget that we use the effect on, while keeping the
+    // loading screen widget's background color black. This way we can create a fade to black effect
+    opacity_effect = new QGraphicsOpacityEffect(this);
+    opacity_effect->setOpacity(1);
+    ui->fade_parent->setGraphicsEffect(opacity_effect);
+    fadeout_animation = std::make_unique<QPropertyAnimation>(opacity_effect, "opacity");
+    fadeout_animation->setDuration(500);
+    fadeout_animation->setStartValue(1);
+    fadeout_animation->setEndValue(0);
+    fadeout_animation->setEasingCurve(QEasingCurve::OutBack);
+
+    // After the fade completes, hide the widget and reset the opacity
+    connect(fadeout_animation.get(), &QPropertyAnimation::finished, [this] {
+        hide();
+        opacity_effect->setOpacity(1);
+        emit Hidden();
+    });
+    connect(this, &LoadingScreen::LoadProgress, this, &LoadingScreen::OnLoadProgress,
+            Qt::QueuedConnection);
+    qRegisterMetaType<VideoCore::LoadCallbackStage>();
+
+    stage_translations = {
+        {VideoCore::LoadCallbackStage::Prepare, tr("Loading...")},
+        {VideoCore::LoadCallbackStage::Decompile, tr("Preparing Shaders %1 / %2")},
+        {VideoCore::LoadCallbackStage::Build, tr("Loading Shaders %1 / %2")},
+        {VideoCore::LoadCallbackStage::Complete, tr("Launching...")},
+    };
+    progressbar_style = {
+        {VideoCore::LoadCallbackStage::Prepare, PROGRESSBAR_STYLE_PREPARE},
+        {VideoCore::LoadCallbackStage::Decompile, PROGRESSBAR_STYLE_DECOMPILE},
+        {VideoCore::LoadCallbackStage::Build, PROGRESSBAR_STYLE_BUILD},
+        {VideoCore::LoadCallbackStage::Complete, PROGRESSBAR_STYLE_COMPLETE},
+    };
 }
 
 LoadingScreen::~LoadingScreen() = default;
@@ -42,11 +120,11 @@ void LoadingScreen::Prepare(Loader::AppLoader& loader) {
         map.loadFromData(buffer.data(), buffer.size());
         ui->banner->setPixmap(map);
 #else
-        backing_mem =
-            std::make_unique<QByteArray>(reinterpret_cast<char*>(buffer.data()), buffer.size());
+        backing_mem = std::make_unique<QByteArray>(reinterpret_cast<char*>(buffer.data()),
+                                                   static_cast<int>(buffer.size()));
         backing_buf = std::make_unique<QBuffer>(backing_mem.get());
         backing_buf->open(QIODevice::ReadOnly);
-        animation = std::make_unique<QMovie>(backing_buf.get(), QByteArray("GIF"));
+        animation = std::make_unique<QMovie>(backing_buf.get(), QByteArray());
         animation->start();
         ui->banner->setMovie(animation.get());
 #endif
@@ -54,17 +132,68 @@ void LoadingScreen::Prepare(Loader::AppLoader& loader) {
     }
     if (loader.ReadLogo(buffer) == Loader::ResultStatus::Success) {
         QPixmap map;
-        map.loadFromData(buffer.data(), buffer.size());
+        map.loadFromData(buffer.data(), static_cast<uint>(buffer.size()));
         ui->logo->setPixmap(map);
     }
+
+    slow_shader_compile_start = false;
+    OnLoadProgress(VideoCore::LoadCallbackStage::Prepare, 0, 0);
+}
+
+void LoadingScreen::OnLoadComplete() {
+    fadeout_animation->start(QPropertyAnimation::KeepWhenStopped);
 }
 
-void LoadingScreen::OnLoadProgress(std::size_t value, std::size_t total) {
+void LoadingScreen::OnLoadProgress(VideoCore::LoadCallbackStage stage, std::size_t value,
+                                   std::size_t total) {
+    using namespace std::chrono;
+    auto now = high_resolution_clock::now();
+    // reset the timer if the stage changes
+    if (stage != previous_stage) {
+        ui->progress_bar->setStyleSheet(progressbar_style[stage]);
+        // Hide the progress bar during the prepare stage
+        if (stage == VideoCore::LoadCallbackStage::Prepare) {
+            ui->progress_bar->hide();
+        } else {
+            ui->progress_bar->show();
+        }
+        previous_stage = stage;
+        // reset back to fast shader compiling since the stage changed
+        slow_shader_compile_start = false;
+    }
+    // update the max of the progress bar if the number of shaders change
     if (total != previous_total) {
-        ui->progress_bar->setMaximum(total);
+        ui->progress_bar->setMaximum(static_cast<int>(total));
         previous_total = total;
     }
-    ui->progress_bar->setValue(value);
+
+    QString estimate;
+    // If theres a drastic slowdown in the rate, then display an estimate
+    if (now - previous_time > milliseconds{50} || slow_shader_compile_start) {
+        if (!slow_shader_compile_start) {
+            slow_shader_start = high_resolution_clock::now();
+            slow_shader_compile_start = true;
+            slow_shader_first_value = value;
+        }
+        // only calculate an estimate time after a second has passed since stage change
+        auto diff = duration_cast<milliseconds>(now - slow_shader_start);
+        if (diff > seconds{1}) {
+            auto eta_mseconds =
+                static_cast<long>(static_cast<double>(total - slow_shader_first_value) /
+                                  (value - slow_shader_first_value) * diff.count());
+            estimate =
+                tr("Estimated Time %1")
+                    .arg(QTime(0, 0, 0, 0)
+                             .addMSecs(std::max<long>(eta_mseconds - diff.count() + 1000, 1000))
+                             .toString("mm:ss"));
+        }
+    }
+
+    // update labels and progress bar
+    ui->stage->setText(stage_translations[stage].arg(value).arg(total));
+    ui->value->setText(estimate);
+    ui->progress_bar->setValue(static_cast<int>(value));
+    previous_time = now;
 }
 
 void LoadingScreen::paintEvent(QPaintEvent* event) {
diff --git a/src/yuzu/loading_screen.h b/src/yuzu/loading_screen.h
index 2a6cf1142..801d08e1a 100644
--- a/src/yuzu/loading_screen.h
+++ b/src/yuzu/loading_screen.h
@@ -4,7 +4,9 @@
 
 #pragma once
 
+#include <chrono>
 #include <memory>
+#include <QString>
 #include <QWidget>
 
 #if !QT_CONFIG(movie)
@@ -19,9 +21,15 @@ namespace Ui {
 class LoadingScreen;
 }
 
+namespace VideoCore {
+enum class LoadCallbackStage;
+}
+
 class QBuffer;
 class QByteArray;
+class QGraphicsOpacityEffect;
 class QMovie;
+class QPropertyAnimation;
 
 class LoadingScreen : public QWidget {
     Q_OBJECT
@@ -39,11 +47,21 @@ public:
     /// used resources such as the logo and banner.
     void Clear();
 
+    /// Slot used to update the status of the progress bar
+    void OnLoadProgress(VideoCore::LoadCallbackStage stage, std::size_t value, std::size_t total);
+
+    /// Hides the LoadingScreen with a fade out effect
+    void OnLoadComplete();
+
     // In order to use a custom widget with a stylesheet, you need to override the paintEvent
     // See https://wiki.qt.io/How_to_Change_the_Background_Color_of_QWidget
     void paintEvent(QPaintEvent* event) override;
 
-    void OnLoadProgress(std::size_t value, std::size_t total);
+signals:
+    void LoadProgress(VideoCore::LoadCallbackStage stage, std::size_t value, std::size_t total);
+    /// Signals that this widget is completely hidden now and should be replaced with the other
+    /// widget
+    void Hidden();
 
 private:
 #ifndef YUZU_QT_MOVIE_MISSING
@@ -53,4 +71,22 @@ private:
 #endif
     std::unique_ptr<Ui::LoadingScreen> ui;
     std::size_t previous_total = 0;
+    VideoCore::LoadCallbackStage previous_stage;
+
+    QGraphicsOpacityEffect* opacity_effect = nullptr;
+    std::unique_ptr<QPropertyAnimation> fadeout_animation;
+
+    // Definitions for the differences in text and styling for each stage
+    std::unordered_map<VideoCore::LoadCallbackStage, const char*> progressbar_style;
+    std::unordered_map<VideoCore::LoadCallbackStage, QString> stage_translations;
+
+    // newly generated shaders are added to the end of the file, so when loading and compiling
+    // shaders, it will start quickly but end slow if new shaders were added since previous launch.
+    // These variables are used to detect the change in speed so we can generate an ETA
+    bool slow_shader_compile_start = false;
+    std::chrono::high_resolution_clock::time_point slow_shader_start;
+    std::chrono::high_resolution_clock::time_point previous_time;
+    std::size_t slow_shader_first_value = 0;
 };
+
+Q_DECLARE_METATYPE(VideoCore::LoadCallbackStage);
diff --git a/src/yuzu/loading_screen.ui b/src/yuzu/loading_screen.ui
index 00579b670..a67d273fd 100644
--- a/src/yuzu/loading_screen.ui
+++ b/src/yuzu/loading_screen.ui
@@ -30,46 +30,128 @@
     <number>0</number>
    </property>
    <item>
-    <widget class="QLabel" name="logo">
-     <property name="text">
-      <string/>
-     </property>
-     <property name="alignment">
-      <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop</set>
-     </property>
-     <property name="margin">
-      <number>30</number>
-     </property>
-    </widget>
-   </item>
-   <item>
-    <layout class="QHBoxLayout" name="horizontalLayout">
-     <item>
-      <widget class="QProgressBar" name="progress_bar">
-       <property name="styleSheet">
-        <string notr="true">font-size: 26px;</string>
-       </property>
-       <property name="value">
-        <number>0</number>
-       </property>
-       <property name="format">
-        <string>Loading Shaders %v out of %m</string>
-       </property>
-      </widget>
-     </item>
-    </layout>
-   </item>
-   <item alignment="Qt::AlignRight|Qt::AlignBottom">
-    <widget class="QLabel" name="banner">
-     <property name="styleSheet">
-      <string notr="true">background-color: black;</string>
-     </property>
-     <property name="text">
-      <string/>
-     </property>
-     <property name="margin">
-      <number>30</number>
-     </property>
+    <widget class="QWidget" name="fade_parent" native="true">
+     <layout class="QVBoxLayout" name="verticalLayout_2">
+      <property name="spacing">
+       <number>0</number>
+      </property>
+      <property name="leftMargin">
+       <number>0</number>
+      </property>
+      <property name="topMargin">
+       <number>0</number>
+      </property>
+      <property name="rightMargin">
+       <number>0</number>
+      </property>
+      <property name="bottomMargin">
+       <number>0</number>
+      </property>
+      <item alignment="Qt::AlignLeft|Qt::AlignTop">
+       <widget class="QLabel" name="logo">
+        <property name="text">
+         <string/>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop</set>
+        </property>
+        <property name="margin">
+         <number>30</number>
+        </property>
+       </widget>
+      </item>
+      <item>
+       <layout class="QVBoxLayout" name="verticalLayout" stretch="1,0,1">
+        <property name="spacing">
+         <number>15</number>
+        </property>
+        <property name="sizeConstraint">
+         <enum>QLayout::SetNoConstraint</enum>
+        </property>
+        <item alignment="Qt::AlignHCenter|Qt::AlignBottom">
+         <widget class="QLabel" name="stage">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Minimum" vsizetype="Minimum">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+          <property name="styleSheet">
+           <string notr="true">background-color: black; color: white;
+font: 75 20pt &quot;Arial&quot;;</string>
+          </property>
+          <property name="text">
+           <string>Loading Shaders 387 / 1628</string>
+          </property>
+         </widget>
+        </item>
+        <item alignment="Qt::AlignHCenter|Qt::AlignTop">
+         <widget class="QProgressBar" name="progress_bar">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Expanding" vsizetype="Preferred">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+          <property name="minimumSize">
+           <size>
+            <width>500</width>
+            <height>40</height>
+           </size>
+          </property>
+          <property name="styleSheet">
+           <string notr="true">QProgressBar {
+color: white;
+border: 2px solid white;
+outline-color: black;
+border-radius: 20px;
+}
+QProgressBar::chunk {
+background-color: white;
+border-radius: 15px;
+}</string>
+          </property>
+          <property name="value">
+           <number>50</number>
+          </property>
+          <property name="textVisible">
+           <bool>false</bool>
+          </property>
+          <property name="format">
+           <string>Loading Shaders %v out of %m</string>
+          </property>
+         </widget>
+        </item>
+        <item alignment="Qt::AlignHCenter|Qt::AlignTop">
+         <widget class="QLabel" name="value">
+          <property name="toolTip">
+           <string notr="true"/>
+          </property>
+          <property name="styleSheet">
+           <string notr="true">background-color: black; color: white;
+font: 75 15pt &quot;Arial&quot;;</string>
+          </property>
+          <property name="text">
+           <string>Stage 1 of 2. Estimate Time 5m 4s</string>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
+      <item alignment="Qt::AlignRight|Qt::AlignBottom">
+       <widget class="QLabel" name="banner">
+        <property name="styleSheet">
+         <string notr="true">background-color: black;</string>
+        </property>
+        <property name="text">
+         <string/>
+        </property>
+        <property name="margin">
+         <number>30</number>
+        </property>
+       </widget>
+      </item>
+     </layout>
     </widget>
    </item>
   </layout>
diff --git a/src/yuzu/main.cpp b/src/yuzu/main.cpp
index 68bfa23ab..2c3e27c2e 100644
--- a/src/yuzu/main.cpp
+++ b/src/yuzu/main.cpp
@@ -415,6 +415,13 @@ void GMainWindow::InitializeWidgets() {
     loading_screen = new LoadingScreen(this);
     loading_screen->hide();
     ui.horizontalLayout->addWidget(loading_screen);
+    connect(loading_screen, &LoadingScreen::Hidden, [&] {
+        loading_screen->Clear();
+        if (emulation_running) {
+            render_window->show();
+            render_window->setFocus();
+        }
+    });
 
     // Create status bar
     message_label = new QLabel();
@@ -904,7 +911,6 @@ void GMainWindow::BootGame(const QString& filename) {
 
     loading_screen->Prepare(Core::System::GetInstance().GetAppLoader());
     loading_screen->show();
-    loading_screen->setFocus();
 
     emulation_running = true;
     if (ui.action_Fullscreen->isChecked()) {
@@ -1514,10 +1520,7 @@ void GMainWindow::OnStopGame() {
 }
 
 void GMainWindow::OnLoadComplete() {
-    loading_screen->hide();
-    loading_screen->Clear();
-    render_window->show();
-    render_window->setFocus();
+    loading_screen->OnLoadComplete();
 }
 
 void GMainWindow::OnMenuReportCompatibility() {