Add MeshTriangleListUpdateJob

Change-Id: I5c94db7de2726f9088861f0f6522800ac893dc82
Reviewed-by: Paul Lemire <paul.lemire@kdab.com>

1 files changed, 120 insertions, 0 deletions

diff --git a/src/render/jobs/updatemeshtrianglelistjob.cpp b/src/render/jobs/updatemeshtrianglelistjob.cpp
new file mode 100644
index 000000000..f796a7297
--- /dev/null
+++ b/src/render/jobs/updatemeshtrianglelistjob.cpp
@@ -0,0 +1,120 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "updatemeshtrianglelistjob_p.h"
+#include <Qt3DRender/private/job_common_p.h>
+#include <Qt3DRender/private/nodemanagers_p.h>
+#include <Qt3DRender/private/light_p.h>
+#include <Qt3DRender/private/sphere_p.h>
+#include <Qt3DRender/private/attribute_p.h>
+#include <Qt3DRender/private/geometryrenderer_p.h>
+#include <Qt3DRender/private/geometry_p.h>
+#include <Qt3DRender/private/attribute_p.h>
+#include <Qt3DRender/private/buffer_p.h>
+#include <Qt3DRender/private/managers_p.h>
+#include <Qt3DRender/private/buffermanager_p.h>
+#include <Qt3DRender/private/geometryrenderermanager_p.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace Qt3DRender {
+
+namespace Render {
+
+UpdateMeshTriangleListJob::UpdateMeshTriangleListJob()
+    : m_manager(nullptr)
+{
+    SET_JOB_RUN_STAT_TYPE(this, JobTypes::UpdateMeshTriangleList, 0);
+}
+
+UpdateMeshTriangleListJob::~UpdateMeshTriangleListJob()
+{
+}
+
+void UpdateMeshTriangleListJob::setManagers(NodeManagers *manager)
+{
+    m_manager = manager;
+}
+
+void UpdateMeshTriangleListJob::run()
+{
+    EntityManager *manager = m_manager->renderNodesManager();
+    const QVector<HEntity> handles = manager->activeHandles();
+
+    for (const HEntity handle : handles) {
+        Entity *node = manager->data(handle);
+
+        // Look if for the GeometryRender/Geometry the attributes and or buffers are dirty
+        // in which case we need to recompute the triangle list
+        const GeometryRenderer *geomRenderer = node->renderComponent<GeometryRenderer>();
+        if (geomRenderer != nullptr) {
+            const Geometry *geom = m_manager->lookupResource<Geometry, GeometryManager>(geomRenderer->geometryId());
+            if (geom != nullptr) {
+                const Qt3DCore::QNodeId geomRendererId = geomRenderer->peerId();
+                if (!m_manager->geometryRendererManager()->isGeometryRendererScheduledForTriangleDataRefresh(geomRendererId)) {
+                    // Check if the attributes or buffers are dirty
+                    bool dirty = geomRenderer->isDirty();
+                    Attribute *attr = nullptr;
+                    const auto attrIds = geom->attributes();
+                    for (const Qt3DCore::QNodeId attrId : attrIds) {
+                        attr = m_manager->attributeManager()->lookupResource(attrId);
+                        if (attr != nullptr) {
+                            dirty |= attr->isDirty();
+                            if (!dirty) {
+                                const Buffer *buffer = m_manager->bufferManager()->lookupResource(attr->bufferId());
+                                if (buffer != nullptr)
+                                    dirty = buffer->isDirty();
+                            }
+                            if (dirty)
+                                break;
+                        }
+                    }
+                    if (dirty)
+                        m_manager->geometryRendererManager()->requestTriangleDataRefreshForGeometryRenderer(geomRendererId);
+                }
+            }
+        }
+    }
+}
+
+} // Render
+
+} // Qt3DRender
+
+QT_END_NAMESPACE