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115 lines
3.7 KiB
C++
115 lines
3.7 KiB
C++
//
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// ResourceImageItem.cpp
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//
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// Created by David Kelly and Howard Stearns on 2017/06/08
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// Copyright 2017 High Fidelity, Inc.
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// Distributed under the Apache License, Version 2.0
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// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
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//
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#include "ResourceImageItem.h"
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#include <QOpenGLFramebufferObjectFormat>
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#include <QOpenGLFunctions>
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#include <QOpenGLExtraFunctions>
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#include <QOpenGLContext>
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#include <plugins/DisplayPlugin.h>
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ResourceImageItem::ResourceImageItem() : QQuickFramebufferObject() {
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auto textureCache = DependencyManager::get<TextureCache>();
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connect(textureCache.data(), SIGNAL(spectatorCameraFramebufferReset()), this, SLOT(update()));
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}
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void ResourceImageItem::setUrl(const QString& url) {
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if (url != m_url) {
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m_url = url;
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update();
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}
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}
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void ResourceImageItem::setReady(bool ready) {
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if (ready != m_ready) {
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m_ready = ready;
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update();
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}
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}
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void ResourceImageItemRenderer::onUpdateTimer() {
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if (_ready) {
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if (_networkTexture && _networkTexture->isLoaded()) {
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if(_fboMutex.tryLock()) {
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invalidateFramebufferObject();
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qApp->getActiveDisplayPlugin()->copyTextureToQuickFramebuffer(_networkTexture, _copyFbo, &_fenceSync);
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_fboMutex.unlock();
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} else {
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qDebug() << "couldn't get a lock, using last frame";
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}
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} else {
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_networkTexture = DependencyManager::get<TextureCache>()->getTexture(_url);
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}
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}
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update();
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}
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ResourceImageItemRenderer::ResourceImageItemRenderer() : QQuickFramebufferObject::Renderer() {
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connect(&_updateTimer, SIGNAL(timeout()), this, SLOT(onUpdateTimer()));
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auto textureCache = DependencyManager::get<TextureCache>();
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}
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void ResourceImageItemRenderer::synchronize(QQuickFramebufferObject* item) {
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ResourceImageItem* resourceImageItem = static_cast<ResourceImageItem*>(item);
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resourceImageItem->setFlag(QQuickItem::ItemHasContents);
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_url = resourceImageItem->getUrl();
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_ready = resourceImageItem->getReady();
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_visible = resourceImageItem->isVisible();
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_window = resourceImageItem->window();
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_networkTexture = DependencyManager::get<TextureCache>()->getTexture(_url);
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static const int UPDATE_TIMER_DELAY_IN_MS = 100; // 100 ms = 10 hz for now
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if (_ready && _visible && !_updateTimer.isActive()) {
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_updateTimer.start(UPDATE_TIMER_DELAY_IN_MS);
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} else if (!(_ready && _visible) && _updateTimer.isActive()) {
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_updateTimer.stop();
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}
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}
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QOpenGLFramebufferObject* ResourceImageItemRenderer::createFramebufferObject(const QSize& size) {
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if (_copyFbo) {
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delete _copyFbo;
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}
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QOpenGLFramebufferObjectFormat format;
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format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
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_copyFbo = new QOpenGLFramebufferObject(size, format);
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_copyFbo->bind();
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return new QOpenGLFramebufferObject(size, format);
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}
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void ResourceImageItemRenderer::render() {
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auto f = QOpenGLContext::currentContext()->extraFunctions();
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if (_fenceSync) {
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f->glWaitSync(_fenceSync, 0, GL_TIMEOUT_IGNORED);
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f->glDeleteSync(_fenceSync);
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_fenceSync = 0;
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}
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if (_ready) {
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_fboMutex.lock();
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_copyFbo->bind();
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QOpenGLFramebufferObject::blitFramebuffer(framebufferObject(), _copyFbo, GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT, GL_NEAREST);
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// this clears the copyFbo texture
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// so next frame starts fresh - helps
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// when aspect ratio changes
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_copyFbo->takeTexture();
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_copyFbo->bind();
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_copyFbo->release();
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_fboMutex.unlock();
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}
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glFlush();
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_window->resetOpenGLState();
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}
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