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Allow compile time disabling of QML surface rendering

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This commit is contained in:
Brad Davis 2018-01-13 11:34:00 -08:00
parent 6d45238bbd
commit 8c528be481
2 changed files with 29 additions and 4 deletions
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26
libraries/ui/src/ui/OffscreenQmlSurface.cpp
View file

@ -518,6 +518,7 @@ QOpenGLContext* OffscreenQmlSurface::getSharedContext() {
void OffscreenQmlSurface::cleanup() {
_isCleaned = true;
#if ENABLE_QML_RENDERING
_canvas->makeCurrent();
_renderControl->invalidate();
@ -535,9 +536,11 @@ void OffscreenQmlSurface::cleanup() {
offscreenTextures.releaseSize(_size);
_canvas->doneCurrent();
#endif
}
void OffscreenQmlSurface::render() {
#if ENABLE_QML_RENDERING
if (nsightActive()) {
return;
}
@ -577,6 +580,7 @@ void OffscreenQmlSurface::render() {
_quickWindow->resetOpenGLState();
_lastRenderTime = usecTimestampNow();
_canvas->doneCurrent();
#endif
}
bool OffscreenQmlSurface::fetchTexture(TextureAndFence& textureAndFence) {
@ -621,7 +625,9 @@ OffscreenQmlSurface::~OffscreenQmlSurface() {
cleanup();
auto engine = _qmlContext->engine();
#if ENABLE_QML_RENDERING
_canvas->deleteLater();
#endif
_rootItem->deleteLater();
_quickWindow->deleteLater();
releaseEngine(engine);
@ -646,6 +652,7 @@ void OffscreenQmlSurface::disconnectAudioOutputTimer() {
void OffscreenQmlSurface::create() {
qCDebug(uiLogging) << "Building QML surface";
#if ENABLE_QML_RENDERING
_renderControl = new QMyQuickRenderControl();
connect(_renderControl, &QQuickRenderControl::renderRequested, this, [this] { _render = true; });
connect(_renderControl, &QQuickRenderControl::sceneChanged, this, [this] { _render = _polish = true; });
@ -662,20 +669,24 @@ void OffscreenQmlSurface::create() {
_quickWindow->setClearBeforeRendering(false);
_renderControl->_renderWindow = _proxyWindow;
_canvas = new OffscreenGLCanvas();
if (!_canvas->create(getSharedContext())) {
qFatal("Failed to create OffscreenGLCanvas");
return;
};
connect(_quickWindow, &QQuickWindow::focusObjectChanged, this, &OffscreenQmlSurface::onFocusObjectChanged);
// acquireEngine interrogates the GL context, so we need to have the context current here
if (!_canvas->makeCurrent()) {
qFatal("Failed to make context current for QML Renderer");
return;
}
#else
_quickWindow = new QQuickWindow();
#endif
connect(_quickWindow, &QQuickWindow::focusObjectChanged, this, &OffscreenQmlSurface::onFocusObjectChanged);
// Create a QML engine.
auto qmlEngine = acquireEngine(_quickWindow);
@ -690,7 +701,10 @@ void OffscreenQmlSurface::create() {
// FIXME Compatibility mechanism for existing HTML and JS that uses eventBridgeWrapper
// Find a way to flag older scripts using this mechanism and wanr that this is deprecated
_qmlContext->setContextProperty("eventBridgeWrapper", new EventBridgeWrapper(this, _qmlContext));
#if ENABLE_QML_RENDERING
_renderControl->initialize(_canvas->getContext());
#endif
#if !defined(Q_OS_ANDROID)
// Connect with the audio client and listen for audio device changes
@ -790,6 +804,7 @@ void OffscreenQmlSurface::resize(const QSize& newSize_, bool forceResize) {
return;
}
#if ENABLE_QML_RENDERING
qCDebug(uiLogging) << "Offscreen UI resizing to " << newSize.width() << "x" << newSize.height();
gl::withSavedContext([&] {
_canvas->makeCurrent();
@ -826,6 +841,7 @@ void OffscreenQmlSurface::resize(const QSize& newSize_, bool forceResize) {
_canvas->doneCurrent();
});
#endif
}
QQuickItem* OffscreenQmlSurface::getRootItem() {
@ -1008,7 +1024,9 @@ void OffscreenQmlSurface::updateQuick() {
if (_polish) {
PROFILE_RANGE(render_qml, "OffscreenQML polish")
#if ENABLE_QML_RENDERING
_renderControl->polishItems();
#endif
_polish = false;
}
@ -1299,9 +1317,11 @@ bool OffscreenQmlSurface::isPaused() const {
void OffscreenQmlSurface::setProxyWindow(QWindow* window) {
_proxyWindow = window;
#if ENABLE_QML_RENDERING
if (_renderControl) {
_renderControl->_renderWindow = window;
}
#endif
}
QObject* OffscreenQmlSurface::getEventHandler() {

7
libraries/ui/src/ui/OffscreenQmlSurface.h
View file

@ -35,6 +35,8 @@ class QQuickWindow;
class QQuickItem;
class QJSValue;
#define ENABLE_QML_RENDERING 0
// GPU resources are typically buffered for one copy being used by the renderer,
// one copy in flight, and one copy being used by the receiver
#define GPU_RESOURCE_BUFFER_SIZE 3
@ -168,10 +170,13 @@ public slots:
private:
QQuickWindow* _quickWindow { nullptr };
QMyQuickRenderControl* _renderControl{ nullptr };
QQmlContext* _qmlContext { nullptr };
QQuickItem* _rootItem { nullptr };
#if ENABLE_QML_RENDERING
QMyQuickRenderControl* _renderControl{ nullptr };
OffscreenGLCanvas* _canvas { nullptr };
#endif
QTimer _updateTimer;
uint32_t _fbo { 0 };