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Merge pull request #2017 from jroweboy/glwidget

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Frontend: Migrate to QOpenGLWindow and support shared contexts
This commit is contained in:
bunnei 2019-04-13 22:08:40 -04:00 committed by GitHub
commit 065f83c6c3
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 241 additions and 95 deletions
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39
src/core/frontend/emu_window.h
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@ -12,6 +12,23 @@
namespace Core::Frontend {
/**
* Represents a graphics context that can be used for background computation or drawing. If the
* graphics backend doesn't require the context, then the implementation of these methods can be
* stubs
*/
class GraphicsContext {
public:
/// Makes the graphics context current for the caller thread
virtual void MakeCurrent() = 0;
/// Releases (dunno if this is the "right" word) the context from the caller thread
virtual void DoneCurrent() = 0;
/// Swap buffers to display the next frame
virtual void SwapBuffers() = 0;
};
/**
* Abstraction class used to provide an interface between emulation code and the frontend
* (e.g. SDL, QGLWidget, GLFW, etc...).
@ -30,7 +47,7 @@ namespace Core::Frontend {
* - DO NOT TREAT THIS CLASS AS A GUI TOOLKIT ABSTRACTION LAYER. That's not what it is. Please
* re-read the upper points again and think about it if you don't see this.
*/
class EmuWindow {
class EmuWindow : public GraphicsContext {
public:
/// Data structure to store emuwindow configuration
struct WindowConfig {
@ -40,17 +57,21 @@ public:
std::pair<unsigned, unsigned> min_client_area_size;
};
/// Swap buffers to display the next frame
virtual void SwapBuffers() = 0;
/// Polls window events
virtual void PollEvents() = 0;
/// Makes the graphics context current for the caller thread
virtual void MakeCurrent() = 0;
/// Releases (dunno if this is the "right" word) the GLFW context from the caller thread
virtual void DoneCurrent() = 0;
/**
* Returns a GraphicsContext that the frontend provides that is shared with the emu window. This
* context can be used from other threads for background graphics computation. If the frontend
* is using a graphics backend that doesn't need anything specific to run on a different thread,
* then it can use a stubbed implemenation for GraphicsContext.
*
* If the return value is null, then the core should assume that the frontend cannot provide a
* Shared Context
*/
virtual std::unique_ptr<GraphicsContext> CreateSharedContext() const {
return nullptr;
}
/**
* Signal that a touch pressed event has occurred (e.g. mouse click pressed)

210
src/yuzu/bootmanager.cpp
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@ -1,6 +1,13 @@
// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <QApplication>
#include <QHBoxLayout>
#include <QKeyEvent>
#include <QOffscreenSurface>
#include <QOpenGLWindow>
#include <QPainter>
#include <QScreen>
#include <QWindow>
#include <fmt/format.h>
@ -82,13 +89,36 @@ void EmuThread::run() {
render_window->moveContext();
}
class GGLContext : public Core::Frontend::GraphicsContext {
public:
explicit GGLContext(QOpenGLContext* shared_context) : surface() {
context = std::make_unique<QOpenGLContext>(shared_context);
surface.setFormat(shared_context->format());
surface.create();
}
void MakeCurrent() override {
context->makeCurrent(&surface);
}
void DoneCurrent() override {
context->doneCurrent();
}
void SwapBuffers() override {}
private:
std::unique_ptr<QOpenGLContext> context;
QOffscreenSurface surface;
};
// 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 {
class GGLWidgetInternal : public QOpenGLWindow {
public:
GGLWidgetInternal(QGLFormat fmt, GRenderWindow* parent)
: QGLWidget(fmt, parent), parent(parent) {}
GGLWidgetInternal(GRenderWindow* parent, QOpenGLContext* shared_context)
: QOpenGLWindow(shared_context), parent(parent) {}
void paintEvent(QPaintEvent* ev) override {
if (do_painting) {
@ -101,9 +131,51 @@ public:
parent->OnFramebufferSizeChanged();
}
void keyPressEvent(QKeyEvent* event) override {
InputCommon::GetKeyboard()->PressKey(event->key());
}
void keyReleaseEvent(QKeyEvent* event) override {
InputCommon::GetKeyboard()->ReleaseKey(event->key());
}
void mousePressEvent(QMouseEvent* event) override {
if (event->source() == Qt::MouseEventSynthesizedBySystem)
return; // touch input is handled in TouchBeginEvent
const auto pos{event->pos()};
if (event->button() == Qt::LeftButton) {
const auto [x, y] = parent->ScaleTouch(pos);
parent->TouchPressed(x, y);
} else if (event->button() == Qt::RightButton) {
InputCommon::GetMotionEmu()->BeginTilt(pos.x(), pos.y());
}
}
void mouseMoveEvent(QMouseEvent* event) override {
if (event->source() == Qt::MouseEventSynthesizedBySystem)
return; // touch input is handled in TouchUpdateEvent
const auto pos{event->pos()};
const auto [x, y] = parent->ScaleTouch(pos);
parent->TouchMoved(x, y);
InputCommon::GetMotionEmu()->Tilt(pos.x(), pos.y());
}
void mouseReleaseEvent(QMouseEvent* event) override {
if (event->source() == Qt::MouseEventSynthesizedBySystem)
return; // touch input is handled in TouchEndEvent
if (event->button() == Qt::LeftButton)
parent->TouchReleased();
else if (event->button() == Qt::RightButton)
InputCommon::GetMotionEmu()->EndTilt();
}
void DisablePainting() {
do_painting = false;
}
void EnablePainting() {
do_painting = true;
}
@ -114,7 +186,7 @@ private:
};
GRenderWindow::GRenderWindow(QWidget* parent, EmuThread* emu_thread)
: QWidget(parent), child(nullptr), emu_thread(emu_thread) {
: QWidget(parent), child(nullptr), context(nullptr), emu_thread(emu_thread) {
setWindowTitle(QStringLiteral("yuzu %1 | %2-%3")
.arg(Common::g_build_name, Common::g_scm_branch, Common::g_scm_desc));
@ -137,19 +209,19 @@ void GRenderWindow::moveContext() {
auto thread = (QThread::currentThread() == qApp->thread() && emu_thread != nullptr)
? emu_thread
: qApp->thread();
child->context()->moveToThread(thread);
context->moveToThread(thread);
}
void GRenderWindow::SwapBuffers() {
// In our multi-threaded QGLWidget use case we shouldn't need to call `makeCurrent`,
// In our multi-threaded QWidget 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();
context->makeCurrent(child);
child->swapBuffers();
context->swapBuffers(child);
if (!first_frame) {
emit FirstFrameDisplayed();
first_frame = true;
@ -157,11 +229,11 @@ void GRenderWindow::SwapBuffers() {
}
void GRenderWindow::MakeCurrent() {
child->makeCurrent();
context->makeCurrent(child);
}
void GRenderWindow::DoneCurrent() {
child->doneCurrent();
context->doneCurrent();
}
void GRenderWindow::PollEvents() {}
@ -174,14 +246,26 @@ void GRenderWindow::PollEvents() {}
void GRenderWindow::OnFramebufferSizeChanged() {
// Screen changes potentially incur a change in screen DPI, hence we should update the
// framebuffer size
qreal pixelRatio = windowPixelRatio();
qreal pixelRatio = GetWindowPixelRatio();
unsigned width = child->QPaintDevice::width() * pixelRatio;
unsigned height = child->QPaintDevice::height() * pixelRatio;
UpdateCurrentFramebufferLayout(width, height);
}
void GRenderWindow::ForwardKeyPressEvent(QKeyEvent* event) {
if (child) {
child->keyPressEvent(event);
}
}
void GRenderWindow::ForwardKeyReleaseEvent(QKeyEvent* event) {
if (child) {
child->keyReleaseEvent(event);
}
}
void GRenderWindow::BackupGeometry() {
geometry = ((QGLWidget*)this)->saveGeometry();
geometry = ((QWidget*)this)->saveGeometry();
}
void GRenderWindow::RestoreGeometry() {
@ -199,18 +283,18 @@ QByteArray GRenderWindow::saveGeometry() {
// If we are a top-level widget, store the current geometry
// otherwise, store the last backup
if (parent() == nullptr)
return ((QGLWidget*)this)->saveGeometry();
return ((QWidget*)this)->saveGeometry();
else
return geometry;
}
qreal GRenderWindow::windowPixelRatio() const {
qreal GRenderWindow::GetWindowPixelRatio() const {
// windowHandle() might not be accessible until the window is displayed to screen.
return windowHandle() ? windowHandle()->screen()->devicePixelRatio() : 1.0f;
}
std::pair<unsigned, unsigned> GRenderWindow::ScaleTouch(const QPointF pos) const {
const qreal pixel_ratio = windowPixelRatio();
const qreal pixel_ratio = GetWindowPixelRatio();
return {static_cast<unsigned>(std::max(std::round(pos.x() * pixel_ratio), qreal{0.0})),
static_cast<unsigned>(std::max(std::round(pos.y() * pixel_ratio), qreal{0.0}))};
}
@ -220,47 +304,6 @@ void GRenderWindow::closeEvent(QCloseEvent* event) {
QWidget::closeEvent(event);
}
void GRenderWindow::keyPressEvent(QKeyEvent* event) {
InputCommon::GetKeyboard()->PressKey(event->key());
}
void GRenderWindow::keyReleaseEvent(QKeyEvent* event) {
InputCommon::GetKeyboard()->ReleaseKey(event->key());
}
void GRenderWindow::mousePressEvent(QMouseEvent* event) {
if (event->source() == Qt::MouseEventSynthesizedBySystem)
return; // touch input is handled in TouchBeginEvent
auto pos = event->pos();
if (event->button() == Qt::LeftButton) {
const auto [x, y] = ScaleTouch(pos);
this->TouchPressed(x, y);
} else if (event->button() == Qt::RightButton) {
InputCommon::GetMotionEmu()->BeginTilt(pos.x(), pos.y());
}
}
void GRenderWindow::mouseMoveEvent(QMouseEvent* event) {
if (event->source() == Qt::MouseEventSynthesizedBySystem)
return; // touch input is handled in TouchUpdateEvent
auto pos = event->pos();
const auto [x, y] = ScaleTouch(pos);
this->TouchMoved(x, y);
InputCommon::GetMotionEmu()->Tilt(pos.x(), pos.y());
}
void GRenderWindow::mouseReleaseEvent(QMouseEvent* event) {
if (event->source() == Qt::MouseEventSynthesizedBySystem)
return; // touch input is handled in TouchEndEvent
if (event->button() == Qt::LeftButton)
this->TouchReleased();
else if (event->button() == Qt::RightButton)
InputCommon::GetMotionEmu()->EndTilt();
}
void GRenderWindow::TouchBeginEvent(const QTouchEvent* event) {
// TouchBegin always has exactly one touch point, so take the .first()
const auto [x, y] = ScaleTouch(event->touchPoints().first().pos());
@ -313,35 +356,60 @@ void GRenderWindow::OnClientAreaResized(unsigned width, unsigned height) {
NotifyClientAreaSizeChanged(std::make_pair(width, height));
}
void GRenderWindow::InitRenderTarget() {
if (child) {
delete child;
}
std::unique_ptr<Core::Frontend::GraphicsContext> GRenderWindow::CreateSharedContext() const {
return std::make_unique<GGLContext>(shared_context.get());
}
if (layout()) {
delete layout();
}
void GRenderWindow::InitRenderTarget() {
shared_context.reset();
context.reset();
delete child;
child = nullptr;
delete container;
container = nullptr;
delete layout();
first_frame = false;
// TODO: One of these flags might be interesting: WA_OpaquePaintEvent, WA_NoBackground,
// WA_DontShowOnScreen, WA_DeleteOnClose
QGLFormat fmt;
QSurfaceFormat fmt;
fmt.setVersion(4, 3);
fmt.setProfile(QGLFormat::CoreProfile);
fmt.setProfile(QSurfaceFormat::CoreProfile);
// TODO: expose a setting for buffer value (ie default/single/double/triple)
fmt.setSwapBehavior(QSurfaceFormat::DefaultSwapBehavior);
shared_context = std::make_unique<QOpenGLContext>();
shared_context->setFormat(fmt);
shared_context->create();
context = std::make_unique<QOpenGLContext>();
context->setShareContext(shared_context.get());
context->setFormat(fmt);
context->create();
fmt.setSwapInterval(false);
// Requests a forward-compatible context, which is required to get a 3.2+ context on OS X
fmt.setOption(QGL::NoDeprecatedFunctions);
child = new GGLWidgetInternal(this, shared_context.get());
container = QWidget::createWindowContainer(child, this);
child = new GGLWidgetInternal(fmt, this);
QBoxLayout* layout = new QHBoxLayout(this);
resize(Layout::ScreenUndocked::Width, Layout::ScreenUndocked::Height);
layout->addWidget(child);
layout->addWidget(container);
layout->setMargin(0);
setLayout(layout);
// Reset minimum size to avoid unwanted resizes when this function is called for a second time.
setMinimumSize(1, 1);
// Show causes the window to actually be created and the OpenGL context as well, but we don't
// want the widget to be shown yet, so immediately hide it.
show();
hide();
resize(Layout::ScreenUndocked::Width, Layout::ScreenUndocked::Height);
child->resize(Layout::ScreenUndocked::Width, Layout::ScreenUndocked::Height);
container->resize(Layout::ScreenUndocked::Width, Layout::ScreenUndocked::Height);
OnMinimalClientAreaChangeRequest(GetActiveConfig().min_client_area_size);
OnFramebufferSizeChanged();

29
src/yuzu/bootmanager.h
View File

@ -7,9 +7,9 @@
#include <atomic>
#include <condition_variable>
#include <mutex>
#include <QGLWidget>
#include <QImage>
#include <QThread>
#include <QWidget>
#include "common/thread.h"
#include "core/core.h"
#include "core/frontend/emu_window.h"
@ -21,6 +21,8 @@ class QTouchEvent;
class GGLWidgetInternal;
class GMainWindow;
class GRenderWindow;
class QSurface;
class QOpenGLContext;
namespace VideoCore {
enum class LoadCallbackStage;
@ -121,25 +123,21 @@ public:
void MakeCurrent() override;
void DoneCurrent() override;
void PollEvents() 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 windowPixelRatio() const;
qreal GetWindowPixelRatio() const;
std::pair<unsigned, unsigned> ScaleTouch(const QPointF pos) const;
void closeEvent(QCloseEvent* event) override;
void keyPressEvent(QKeyEvent* event) override;
void keyReleaseEvent(QKeyEvent* event) override;
void mousePressEvent(QMouseEvent* event) override;
void mouseMoveEvent(QMouseEvent* event) override;
void mouseReleaseEvent(QMouseEvent* event) override;
bool event(QEvent* event) override;
void focusOutEvent(QFocusEvent* event) override;
void OnClientAreaResized(unsigned width, unsigned height);
@ -161,7 +159,6 @@ signals:
void FirstFrameDisplayed();
private:
std::pair<unsigned, unsigned> ScaleTouch(const QPointF pos) const;
void TouchBeginEvent(const QTouchEvent* event);
void TouchUpdateEvent(const QTouchEvent* event);
void TouchEndEvent();
@ -169,11 +166,17 @@ private:
void OnMinimalClientAreaChangeRequest(
const std::pair<unsigned, unsigned>& minimal_size) override;
GGLWidgetInternal* child;
QWidget* container = nullptr;
GGLWidgetInternal* child = nullptr;
QByteArray geometry;
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;
/// Temporary storage of the screenshot taken
QImage screenshot_image;

15
src/yuzu/main.cpp
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@ -2031,6 +2031,18 @@ void GMainWindow::dragMoveEvent(QDragMoveEvent* event) {
event->acceptProposedAction();
}
void GMainWindow::keyPressEvent(QKeyEvent* event) {
if (render_window) {
render_window->ForwardKeyPressEvent(event);
}
}
void GMainWindow::keyReleaseEvent(QKeyEvent* event) {
if (render_window) {
render_window->ForwardKeyReleaseEvent(event);
}
}
bool GMainWindow::ConfirmChangeGame() {
if (emu_thread == nullptr)
return true;
@ -2098,7 +2110,8 @@ int main(int argc, char* argv[]) {
QCoreApplication::setOrganizationName("yuzu team");
QCoreApplication::setApplicationName("yuzu");
QApplication::setAttribute(Qt::AA_DontCheckOpenGLContextThreadAffinity);
// Enables the core to make the qt created contexts current on std::threads
QCoreApplication::setAttribute(Qt::AA_DontCheckOpenGLContextThreadAffinity);
QApplication app(argc, argv);
// Qt changes the locale and causes issues in float conversion using std::to_string() when

4
src/yuzu/main.h
View File

@ -252,4 +252,8 @@ protected:
void dropEvent(QDropEvent* event) override;
void dragEnterEvent(QDragEnterEvent* event) override;
void dragMoveEvent(QDragMoveEvent* event) override;
// Overrides used to forward signals to the render window when the focus moves out.
void keyPressEvent(QKeyEvent* event) override;
void keyReleaseEvent(QKeyEvent* event) override;
};

37
src/yuzu_cmd/emu_window/emu_window_sdl2.cpp
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@ -19,6 +19,37 @@
#include "input_common/sdl/sdl.h"
#include "yuzu_cmd/emu_window/emu_window_sdl2.h"
class SDLGLContext : public Core::Frontend::GraphicsContext {
public:
explicit SDLGLContext() {
// create a hidden window to make the shared context against
window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED, // x position
SDL_WINDOWPOS_UNDEFINED, // y position
Layout::ScreenUndocked::Width, Layout::ScreenUndocked::Height,
SDL_WINDOW_OPENGL | SDL_WINDOW_HIDDEN);
context = SDL_GL_CreateContext(window);
}
~SDLGLContext() {
SDL_GL_DeleteContext(context);
SDL_DestroyWindow(window);
}
void MakeCurrent() override {
SDL_GL_MakeCurrent(window, context);
}
void DoneCurrent() override {
SDL_GL_MakeCurrent(window, nullptr);
}
void SwapBuffers() override {}
private:
SDL_Window* window;
SDL_GLContext context;
};
void EmuWindow_SDL2::OnMouseMotion(s32 x, s32 y) {
TouchMoved((unsigned)std::max(x, 0), (unsigned)std::max(y, 0));
InputCommon::GetMotionEmu()->Tilt(x, y);
@ -153,6 +184,7 @@ EmuWindow_SDL2::EmuWindow_SDL2(bool fullscreen) {
SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 0);
SDL_GL_SetAttribute(SDL_GL_SHARE_WITH_CURRENT_CONTEXT, 1);
std::string window_title = fmt::format("yuzu {} | {}-{}", Common::g_build_fullname,
Common::g_scm_branch, Common::g_scm_desc);
@ -171,7 +203,6 @@ EmuWindow_SDL2::EmuWindow_SDL2(bool fullscreen) {
if (fullscreen) {
Fullscreen();
}
gl_context = SDL_GL_CreateContext(render_window);
if (gl_context == nullptr) {
@ -278,3 +309,7 @@ void EmuWindow_SDL2::OnMinimalClientAreaChangeRequest(
SDL_SetWindowMinimumSize(render_window, minimal_size.first, minimal_size.second);
}
std::unique_ptr<Core::Frontend::GraphicsContext> EmuWindow_SDL2::CreateSharedContext() const {
return std::make_unique<SDLGLContext>();
}

2
src/yuzu_cmd/emu_window/emu_window_sdl2.h
View File

@ -27,6 +27,8 @@ public:
/// Releases the GL context from the caller thread
void DoneCurrent() override;
std::unique_ptr<Core::Frontend::GraphicsContext> CreateSharedContext() const override;
/// Whether the window is still open, and a close request hasn't yet been sent
bool IsOpen() const;