qt-everywhere-src-5.15.1/qt3d/src/plugins/renderers/opengl/jobs/renderviewinitializerjob.cpp

/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Copyright (C) 2016 Paul Lemire
** Contact: https://www.qt.io/licensing/
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#include "renderviewinitializerjob_p.h"

#include <renderview_p.h>
#include <renderer_p.h>
#include <renderviewjobutils_p.h>
#include <Qt3DRender/private/renderlogging_p.h>
#include <Qt3DRender/private/job_common_p.h>

#include <QElapsedTimer>

QT_BEGIN_NAMESPACE

namespace Qt3DRender {
namespace Render {
namespace OpenGL {

namespace {
// only accessed in ctor and dtor of RenderViewJob
// which are always being called in a non concurrent manner
int renderViewInstanceCounter = 0;
} // anonymous

RenderViewInitializerJob::RenderViewInitializerJob()
    : m_renderer(nullptr)
    , m_fgLeaf(nullptr)
    , m_index(0)
    , m_renderView(nullptr)
{
    SET_JOB_RUN_STAT_TYPE(this, JobTypes::RenderView, renderViewInstanceCounter++)
}

RenderViewInitializerJob::~RenderViewInitializerJob()
{
    renderViewInstanceCounter--;
}

void RenderViewInitializerJob::run()
{
    qCDebug(Jobs) << Q_FUNC_INFO << m_index;
#if defined(QT3D_RENDER_VIEW_JOB_TIMINGS)
    QElapsedTimer timer;
    timer.start();
    qint64 gatherLightsTime;
    qint64 buildCommandsTime;
#endif

    // Create a RenderView object
    // The RenderView are created from a QFrameAllocator stored in the current Thread local storage
    m_renderView = new RenderView;

    // RenderView should allocate heap resources using only the currentFrameAllocator
    m_renderView->setRenderer(m_renderer);

    // Populate the renderview's configuration from the framegraph
    setRenderViewConfigFromFrameGraphLeafNode(m_renderView, m_fgLeaf);
#if defined(QT3D_RENDER_VIEW_JOB_TIMINGS)
    qint64 gatherStateTime = timer.nsecsElapsed();
    timer.restart();
#endif
}

} // namespace OpenGL
} // namespace Render
} // namespace Qt3DRender

QT_END_NAMESPACE