87 lines
2.4 KiB
C++
87 lines
2.4 KiB
C++
#include "qmapboxgl_map_renderer.hpp"
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#include <QtGlobal>
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QMapboxGLMapRenderer::QMapboxGLMapRenderer(qreal pixelRatio,
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mbgl::DefaultFileSource &fs, mbgl::ThreadPool &tp, QMapboxGLSettings::GLContextMode mode)
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: m_renderer(std::make_unique<mbgl::Renderer>(m_backend, pixelRatio, fs, tp, static_cast<mbgl::GLContextMode>(mode)))
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, m_threadWithScheduler(Scheduler::GetCurrent() != nullptr)
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{
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}
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QMapboxGLMapRenderer::~QMapboxGLMapRenderer()
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{
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MBGL_VERIFY_THREAD(tid);
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}
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void QMapboxGLMapRenderer::schedule(std::weak_ptr<mbgl::Mailbox> mailbox)
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{
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std::lock_guard<std::mutex> lock(m_taskQueueMutex);
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m_taskQueue.push(mailbox);
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// Need to force the main thread to wake
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// up this thread and process the events.
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emit needsRendering();
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}
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void QMapboxGLMapRenderer::updateParameters(std::shared_ptr<mbgl::UpdateParameters> newParameters)
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{
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std::lock_guard<std::mutex> lock(m_updateMutex);
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m_updateParameters = std::move(newParameters);
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}
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void QMapboxGLMapRenderer::updateFramebuffer(quint32 fbo, const mbgl::Size &size)
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{
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MBGL_VERIFY_THREAD(tid);
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m_backend.updateFramebuffer(fbo, size);
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}
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void QMapboxGLMapRenderer::render()
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{
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MBGL_VERIFY_THREAD(tid);
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std::shared_ptr<mbgl::UpdateParameters> params;
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{
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// Lock on the parameters
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std::lock_guard<std::mutex> lock(m_updateMutex);
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if (!m_updateParameters) {
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return;
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}
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// Hold on to the update parameters during render
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params = m_updateParameters;
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}
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// The OpenGL implementation automatically enables the OpenGL context for us.
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mbgl::BackendScope scope(m_backend, mbgl::BackendScope::ScopeType::Implicit);
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// If we don't have a Scheduler on this thread, which
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// is usually the case for render threads, use this
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// object as scheduler.
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if (!m_threadWithScheduler) {
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Scheduler::SetCurrent(this);
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}
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m_renderer->render(*params);
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if (!m_threadWithScheduler) {
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std::queue<std::weak_ptr<mbgl::Mailbox>> taskQueue;
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{
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std::unique_lock<std::mutex> lock(m_taskQueueMutex);
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std::swap(taskQueue, m_taskQueue);
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}
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while (!taskQueue.empty()) {
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mbgl::Mailbox::maybeReceive(taskQueue.front());
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taskQueue.pop();
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}
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}
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}
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void QMapboxGLMapRenderer::setObserver(std::shared_ptr<mbgl::RendererObserver> observer)
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{
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m_renderer->setObserver(observer.get());
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}
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