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