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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <atomic>
#include <condition_variable>
#include <mutex>
#include <QImage>
#include <QThread>
#include <QWidget>
#include "common/thread.h"
#include "core/core.h"
#include "core/frontend/emu_window.h"
class QKeyEvent;
class QScreen;
class QTouchEvent;
class QStringList;
class QSurface;
class QOpenGLContext;
#ifdef HAS_VULKAN
class QVulkanInstance;
#endif
class GWidgetInternal;
class GGLWidgetInternal;
class GVKWidgetInternal;
class GMainWindow;
class GRenderWindow;
class QSurface;
class QOpenGLContext;
namespace VideoCore {
enum class LoadCallbackStage;
}
class EmuThread final : public QThread {
Q_OBJECT
public:
explicit EmuThread(GRenderWindow* render_window);
~EmuThread() override;
/**
* Start emulation (on new thread)
* @warning Only call when not running!
*/
void run() override;
/**
* Steps the emulation thread by a single CPU instruction (if the CPU is not already running)
* @note This function is thread-safe
*/
void ExecStep() {
exec_step = true;
running_cv.notify_all();
}
/**
* Sets whether the emulation thread is running or not
* @param running Boolean value, set the emulation thread to running if true
* @note This function is thread-safe
*/
void SetRunning(bool running) {
std::unique_lock lock{running_mutex};
this->running = running;
lock.unlock();
running_cv.notify_all();
}
/**
* Check if the emulation thread is running or not
* @return True if the emulation thread is running, otherwise false
* @note This function is thread-safe
*/
bool IsRunning() const {
return running;
}
/**
* Requests for the emulation thread to stop running
*/
void RequestStop() {
stop_run = true;
SetRunning(false);
}
private:
bool exec_step = false;
bool running = false;
std::atomic_bool stop_run{false};
std::mutex running_mutex;
std::condition_variable running_cv;
GRenderWindow* render_window;
signals:
/**
* Emitted when the CPU has halted execution
*
* @warning When connecting to this signal from other threads, make sure to specify either
* Qt::QueuedConnection (invoke slot within the destination object's message thread) or even
* Qt::BlockingQueuedConnection (additionally block source thread until slot returns)
*/
void DebugModeEntered();
/**
* Emitted right before the CPU continues execution
*
* @warning When connecting to this signal from other threads, make sure to specify either
* Qt::QueuedConnection (invoke slot within the destination object's message thread) or even
* Qt::BlockingQueuedConnection (additionally block source thread until slot returns)
*/
void DebugModeLeft();
void ErrorThrown(Core::System::ResultStatus, std::string);
void LoadProgress(VideoCore::LoadCallbackStage stage, std::size_t value, std::size_t total);
};
class GRenderWindow : public QWidget, public Core::Frontend::EmuWindow {
Q_OBJECT
public:
GRenderWindow(GMainWindow* parent, EmuThread* emu_thread);
~GRenderWindow() override;
// EmuWindow implementation
void SwapBuffers() override;
void MakeCurrent() override;
void DoneCurrent() override;
void PollEvents() override;
bool IsShown() const override;
void RetrieveVulkanHandlers(void* get_instance_proc_addr, void* instance,
void* surface) const override;
std::unique_ptr<Core::Frontend::GraphicsContext> CreateSharedContext() const override;
void ForwardKeyPressEvent(QKeyEvent* event);
void ForwardKeyReleaseEvent(QKeyEvent* event);
void BackupGeometry();
void RestoreGeometry();
void restoreGeometry(const QByteArray& geometry); // overridden
QByteArray saveGeometry(); // overridden
qreal GetWindowPixelRatio() const;
std::pair<u32, u32> ScaleTouch(QPointF pos) const;
void closeEvent(QCloseEvent* event) override;
bool event(QEvent* event) override;
void focusOutEvent(QFocusEvent* event) override;
void OnClientAreaResized(u32 width, u32 height);
bool InitRenderTarget();
void CaptureScreenshot(u32 res_scale, const QString& screenshot_path);
public slots:
void moveContext(); // overridden
void OnEmulationStarting(EmuThread* emu_thread);
void OnEmulationStopping();
void OnFramebufferSizeChanged();
signals:
/// Emitted when the window is closed
void Closed();
void FirstFrameDisplayed();
private:
void TouchBeginEvent(const QTouchEvent* event);
void TouchUpdateEvent(const QTouchEvent* event);
void TouchEndEvent();
void OnMinimalClientAreaChangeRequest(std::pair<u32, u32> minimal_size) override;
bool InitializeOpenGL();
bool InitializeVulkan();
bool LoadOpenGL();
QStringList GetUnsupportedGLExtensions() const;
QWidget* container = nullptr;
GWidgetInternal* child = nullptr;
EmuThread* emu_thread;
// Context that backs the GGLWidgetInternal (and will be used by core to render)
std::unique_ptr<QOpenGLContext> context;
// Context that will be shared between all newly created contexts. This should never be made
// current
std::unique_ptr<QOpenGLContext> shared_context;
#ifdef HAS_VULKAN
std::unique_ptr<QVulkanInstance> vk_instance;
#endif
/// Temporary storage of the screenshot taken
QImage screenshot_image;
QByteArray geometry;
bool first_frame = false;
protected:
void showEvent(QShowEvent* event) override;
};
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