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Change Qt to use QOpenGLWidget and support shared context and texture mailbox

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This commit is contained in:
James Rowe 2019-09-16 20:38:48 -06:00
parent 27d0fc64d0
commit 91255b8802
3 changed files with 85 additions and 118 deletions
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142
src/citra_qt/bootmanager.cpp
View file

@ -1,31 +1,33 @@
#include <QApplication>
#include <QHBoxLayout>
#include <QKeyEvent>
#include <QOffScreenSurface>
#include <QOpenGLContext>
#include <QOpenGLFunctions>
#include <QScreen>
#include <QWindow>
#include <fmt/format.h>
#include "citra_qt/bootmanager.h"
#include "common/microprofile.h"
#include "common/scm_rev.h"
#include "core/3ds.h"
#include "core/core.h"
#include "core/frontend/scope_acquire_context.h"
#include "core/settings.h"
#include "input_common/keyboard.h"
#include "input_common/main.h"
#include "input_common/motion_emu.h"
#include "network/network.h"
#include "video_core/renderer_base.h"
#include "video_core/video_core.h"
EmuThread::EmuThread(GRenderWindow* render_window) : render_window(render_window) {}
EmuThread::EmuThread(Frontend::GraphicsContext& core_context) : core_context(core_context) {}
EmuThread::~EmuThread() = default;
void EmuThread::run() {
render_window->MakeCurrent();
MicroProfileOnThreadCreate("EmuThread");
Frontend::ScopeAcquireContext scope(core_context);
// Holds whether the cpu was running during the last iteration,
// so that the DebugModeLeft signal can be emitted before the
// next execution step.
@ -72,43 +74,10 @@ void EmuThread::run() {
#if MICROPROFILE_ENABLED
MicroProfileOnThreadExit();
#endif
render_window->moveContext();
}
// This class overrides paintEvent and resizeEvent to prevent the GUI thread from stealing GL
// context.
// The corresponding functionality is handled in EmuThread instead
class GGLWidgetInternal : public QGLWidget {
public:
GGLWidgetInternal(QGLFormat fmt, GRenderWindow* parent)
: QGLWidget(fmt, parent), parent(parent) {}
void paintEvent(QPaintEvent* ev) override {
if (do_painting) {
QPainter painter(this);
}
}
void resizeEvent(QResizeEvent* ev) override {
parent->OnClientAreaResized(ev->size().width(), ev->size().height());
parent->OnFramebufferSizeChanged();
}
void DisablePainting() {
do_painting = false;
}
void EnablePainting() {
do_painting = true;
}
private:
GRenderWindow* parent;
bool do_painting;
};
GRenderWindow::GRenderWindow(QWidget* parent, EmuThread* emu_thread)
: QWidget(parent), child(nullptr), emu_thread(emu_thread) {
: QOpenGLWidget(parent), emu_thread(emu_thread) {
setWindowTitle(QStringLiteral("Citra %1 | %2-%3")
.arg(Common::g_build_name, Common::g_scm_branch, Common::g_scm_desc));
@ -121,35 +90,12 @@ GRenderWindow::~GRenderWindow() {
InputCommon::Shutdown();
}
void GRenderWindow::moveContext() {
DoneCurrent();
// If the thread started running, move the GL Context to the new thread. Otherwise, move it
// back.
auto thread = (QThread::currentThread() == qApp->thread() && emu_thread != nullptr)
? emu_thread
: qApp->thread();
child->context()->moveToThread(thread);
}
void GRenderWindow::SwapBuffers() {
// In our multi-threaded QGLWidget use case we shouldn't need to call `makeCurrent`,
// since we never call `doneCurrent` in this thread.
// However:
// - The Qt debug runtime prints a bogus warning on the console if `makeCurrent` wasn't called
// since the last time `swapBuffers` was executed;
// - On macOS, if `makeCurrent` isn't called explicitely, resizing the buffer breaks.
child->makeCurrent();
child->swapBuffers();
}
void GRenderWindow::MakeCurrent() {
child->makeCurrent();
core_context->MakeCurrent();
}
void GRenderWindow::DoneCurrent() {
child->doneCurrent();
core_context->DoneCurrent();
}
void GRenderWindow::PollEvents() {}
@ -163,8 +109,8 @@ void GRenderWindow::OnFramebufferSizeChanged() {
// Screen changes potentially incur a change in screen DPI, hence we should update the
// framebuffer size
const qreal pixel_ratio = windowPixelRatio();
const u32 width = child->QPaintDevice::width() * pixel_ratio;
const u32 height = child->QPaintDevice::height() * pixel_ratio;
const u32 width = this->width() * pixel_ratio;
const u32 height = this->height() * pixel_ratio;
UpdateCurrentFramebufferLayout(width, height);
}
@ -298,42 +244,16 @@ void GRenderWindow::focusOutEvent(QFocusEvent* event) {
InputCommon::GetKeyboard()->ReleaseAllKeys();
}
void GRenderWindow::OnClientAreaResized(u32 width, u32 height) {
NotifyClientAreaSizeChanged(std::make_pair(width, height));
void GRenderWindow::resizeEvent(QResizeEvent* event) {
QOpenGLWidget::resizeEvent(event);
NotifyClientAreaSizeChanged(std::make_pair(event->size().width(), event->size().height()));
OnFramebufferSizeChanged();
}
void GRenderWindow::InitRenderTarget() {
if (child) {
delete child;
}
if (layout()) {
delete layout();
}
// TODO: One of these flags might be interesting: WA_OpaquePaintEvent, WA_NoBackground,
// WA_DontShowOnScreen, WA_DeleteOnClose
QGLFormat fmt;
fmt.setVersion(3, 3);
fmt.setProfile(QGLFormat::CoreProfile);
fmt.setSwapInterval(Settings::values.vsync_enabled);
// Requests a forward-compatible context, which is required to get a 3.2+ context on OS X
fmt.setOption(QGL::NoDeprecatedFunctions);
child = new GGLWidgetInternal(fmt, this);
QBoxLayout* layout = new QHBoxLayout(this);
resize(Core::kScreenTopWidth, Core::kScreenTopHeight + Core::kScreenBottomHeight);
layout->addWidget(child);
layout->setMargin(0);
setLayout(layout);
OnMinimalClientAreaChangeRequest(GetActiveConfig().min_client_area_size);
OnFramebufferSizeChanged();
NotifyClientAreaSizeChanged(std::pair<unsigned, unsigned>(child->width(), child->height()));
core_context = CreateSharedContext();
BackupGeometry();
}
@ -361,12 +281,15 @@ void GRenderWindow::OnMinimalClientAreaChangeRequest(std::pair<u32, u32> minimal
void GRenderWindow::OnEmulationStarting(EmuThread* emu_thread) {
this->emu_thread = emu_thread;
child->DisablePainting();
}
void GRenderWindow::OnEmulationStopping() {
emu_thread = nullptr;
child->EnablePainting();
}
void GRenderWindow::paintGL() {
VideoCore::g_renderer->Present();
update();
}
void GRenderWindow::showEvent(QShowEvent* event) {
@ -376,3 +299,24 @@ void GRenderWindow::showEvent(QShowEvent* event) {
connect(windowHandle(), &QWindow::screenChanged, this, &GRenderWindow::OnFramebufferSizeChanged,
Qt::UniqueConnection);
}
std::unique_ptr<Frontend::GraphicsContext> GRenderWindow::CreateSharedContext() const {
return std::make_unique<GGLContext>(QOpenGLContext::globalShareContext());
}
GGLContext::GGLContext(QOpenGLContext* shared_context)
: context(new QOpenGLContext(shared_context->parent())),
surface(new QOffscreenSurface(nullptr, shared_context->parent())) {
context->setShareContext(shared_context);
context->create();
surface->setFormat(shared_context->format());
surface->create();
}
void GGLContext::MakeCurrent() {
context->makeCurrent(surface);
}
void GGLContext::DoneCurrent() {
context->doneCurrent();
}

38
src/citra_qt/bootmanager.h
View file

@ -7,8 +7,7 @@
#include <atomic>
#include <condition_variable>
#include <mutex>
#include <QGLWidget>
#include <QImage>
#include <QOpenGLWidget>
#include <QThread>
#include "common/thread.h"
#include "core/core.h"
@ -17,16 +16,30 @@
class QKeyEvent;
class QScreen;
class QTouchEvent;
class QOffscreenSurface;
class QOpenGLContext;
class GGLWidgetInternal;
class GMainWindow;
class GRenderWindow;
class GGLContext : public Frontend::GraphicsContext {
public:
explicit GGLContext(QOpenGLContext* shared_context);
void MakeCurrent() override;
void DoneCurrent() override;
private:
QOpenGLContext* context;
QOffscreenSurface* surface;
};
class EmuThread final : public QThread {
Q_OBJECT
public:
explicit EmuThread(GRenderWindow* render_window);
explicit EmuThread(Frontend::GraphicsContext& context);
~EmuThread() override;
/**
@ -80,7 +93,7 @@ private:
std::mutex running_mutex;
std::condition_variable running_cv;
GRenderWindow* render_window;
Frontend::GraphicsContext& core_context;
signals:
/**
@ -104,18 +117,20 @@ signals:
void ErrorThrown(Core::System::ResultStatus, std::string);
};
class GRenderWindow : public QWidget, public Frontend::EmuWindow {
class GRenderWindow : public QOpenGLWidget, public Frontend::EmuWindow {
Q_OBJECT
public:
GRenderWindow(QWidget* parent, EmuThread* emu_thread);
~GRenderWindow() override;
// EmuWindow implementation
void SwapBuffers() override;
// EmuWindow implementation.
void MakeCurrent() override;
void DoneCurrent() override;
void PollEvents() override;
std::unique_ptr<Frontend::GraphicsContext> CreateSharedContext() const override;
void paintGL() override;
void BackupGeometry();
void RestoreGeometry();
@ -126,6 +141,8 @@ public:
void closeEvent(QCloseEvent* event) override;
void resizeEvent(QResizeEvent* event) override;
void keyPressEvent(QKeyEvent* event) override;
void keyReleaseEvent(QKeyEvent* event) override;
@ -137,14 +154,11 @@ public:
void focusOutEvent(QFocusEvent* event) override;
void OnClientAreaResized(u32 width, u32 height);
void InitRenderTarget();
void CaptureScreenshot(u32 res_scale, const QString& screenshot_path);
public slots:
void moveContext(); // overridden
void OnEmulationStarting(EmuThread* emu_thread);
void OnEmulationStopping();
@ -162,7 +176,7 @@ private:
void OnMinimalClientAreaChangeRequest(std::pair<u32, u32> minimal_size) override;
GGLWidgetInternal* child;
std::unique_ptr<GraphicsContext> core_context;
QByteArray geometry;

23
src/citra_qt/main.cpp
View file

@ -5,12 +5,11 @@
#include <clocale>
#include <memory>
#include <thread>
#include <glad/glad.h>
#define QT_NO_OPENGL
#include <QDesktopWidget>
#include <QFileDialog>
#include <QFutureWatcher>
#include <QMessageBox>
#include <QOpenGLFunctions_3_3_Core>
#include <QSysInfo>
#include <QtConcurrent/QtConcurrentRun>
#include <QtGui>
@ -72,6 +71,7 @@
#include "core/file_sys/archive_extsavedata.h"
#include "core/file_sys/archive_source_sd_savedata.h"
#include "core/frontend/applets/default_applets.h"
#include "core/frontend/scope_acquire_context.h"
#include "core/gdbstub/gdbstub.h"
#include "core/hle/service/fs/archive.h"
#include "core/hle/service/nfc/nfc.h"
@ -768,13 +768,14 @@ bool GMainWindow::LoadROM(const QString& filename) {
ShutdownGame();
render_window->InitRenderTarget();
render_window->MakeCurrent();
Frontend::ScopeAcquireContext scope(*render_window);
const QString below_gl33_title = tr("OpenGL 3.3 Unsupported");
const QString below_gl33_message = tr("Your GPU may not support OpenGL 3.3, or you do not "
"have the latest graphics driver.");
if (!gladLoadGL()) {
if (!QOpenGLContext::globalShareContext()->versionFunctions<QOpenGLFunctions_3_3_Core>()) {
QMessageBox::critical(this, below_gl33_title, below_gl33_message);
return false;
}
@ -893,9 +894,8 @@ void GMainWindow::BootGame(const QString& filename) {
return;
// Create and start the emulation thread
emu_thread = std::make_unique<EmuThread>(render_window);
emu_thread = std::make_unique<EmuThread>(*render_window);
emit EmulationStarting(emu_thread.get());
render_window->moveContext();
emu_thread->start();
connect(render_window, &GRenderWindow::Closed, this, &GMainWindow::OnStopGame);
@ -2050,11 +2050,20 @@ int main(int argc, char* argv[]) {
QCoreApplication::setOrganizationName("Citra team");
QCoreApplication::setApplicationName("Citra");
QSurfaceFormat format;
format.setVersion(3, 3);
format.setProfile(QSurfaceFormat::CoreProfile);
format.setSwapInterval(1);
// TODO: expose a setting for buffer value (ie default/single/double/triple)
format.setSwapBehavior(QSurfaceFormat::DefaultSwapBehavior);
QSurfaceFormat::setDefaultFormat(format);
#ifdef __APPLE__
std::string bin_path = FileUtil::GetBundleDirectory() + DIR_SEP + "..";
chdir(bin_path.c_str());
#endif
QCoreApplication::setAttribute(Qt::AA_DontCheckOpenGLContextThreadAffinity);
QCoreApplication::setAttribute(Qt::AA_ShareOpenGLContexts);
QApplication app(argc, argv);
// Qt changes the locale and causes issues in float conversion using std::to_string() when