BackendNode for QComputeDispatch

Change-Id: I41a027b073ee5cb253f7b37244ad887acff4f909
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

4 files changed, 179 insertions, 3 deletions

diff --git a/src/render/framegraph/dispatchcompute.cpp b/src/render/framegraph/dispatchcompute.cpp
new file mode 100644
index 000000000..3197a1d4a
--- /dev/null
+++ b/src/render/framegraph/dispatchcompute.cpp
@@ -0,0 +1,92 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://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.LGPLv3 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.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 later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "dispatchcompute_p.h"
+#include <Qt3DCore/qscenepropertychange.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace Qt3DRender {
+
+namespace Render {
+
+DispatchCompute::DispatchCompute()
+    : FrameGraphNode(FrameGraphNode::ComputeDispatch)
+{
+    m_workGroups[0] = 1;
+    m_workGroups[1] = 1;
+    m_workGroups[2] = 1;
+}
+
+DispatchCompute::~DispatchCompute()
+{
+}
+
+void DispatchCompute::cleanup()
+{
+    m_workGroups[0] = 1;
+    m_workGroups[1] = 1;
+    m_workGroups[2] = 1;
+}
+
+void DispatchCompute::updateFromPeer(Qt3DCore::QNode *peer)
+{
+    QDispatchCompute *computeDispatch = static_cast<QDispatchCompute *>(peer);
+    m_workGroups[0] = computeDispatch->workGroupX();
+    m_workGroups[1] = computeDispatch->workGroupY();
+    m_workGroups[2] = computeDispatch->workGroupZ();
+}
+
+void DispatchCompute::sceneChangeEvent(const Qt3DCore::QSceneChangePtr &e)
+{
+    if (e->type() == Qt3DCore::NodeUpdated) {
+        Qt3DCore::QScenePropertyChangePtr propertyChange = qSharedPointerCast<Qt3DCore::QScenePropertyChange>(e);
+        if (propertyChange->propertyName() == QByteArrayLiteral("workGroupX"))
+            m_workGroups[0] = propertyChange->value().toInt();
+        else if (propertyChange->propertyName() == QByteArrayLiteral("workGroupY"))
+            m_workGroups[1] = propertyChange->value().toInt();
+        else if (propertyChange->propertyName() == QByteArrayLiteral("workGroupZ"))
+            m_workGroups[2] = propertyChange->value().toInt();
+        else if (propertyChange->propertyName() == QByteArrayLiteral("enabled"))
+            setEnabled(propertyChange->value().toBool());
+    }
+}
+
+} // Render
+
+} // Qt3DRender
+
+QT_END_NAMESPACE
diff --git a/src/render/framegraph/dispatchcompute_p.h b/src/render/framegraph/dispatchcompute_p.h
new file mode 100644
index 000000000..7a90f980a
--- /dev/null
+++ b/src/render/framegraph/dispatchcompute_p.h
@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** 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 http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://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.LGPLv3 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.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 later as published by the Free
+** Software Foundation and appearing in the file LICENSE.GPL included in
+** the packaging of this file. Please review the following information to
+** ensure the GNU General Public License version 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QT3DRENDER_RENDER_DISPATCHCOMPUTE_H
+#define QT3DRENDER_RENDER_DISPATCHCOMPUTE_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of other Qt classes.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <Qt3DRender/private/framegraphnode_p.h>
+#include <Qt3DRender/qdispatchcompute.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace Qt3DRender {
+
+namespace Render {
+
+class DispatchCompute : public FrameGraphNode
+{
+public:
+    DispatchCompute();
+    ~DispatchCompute();
+
+    void cleanup();
+
+    void updateFromPeer(Qt3DCore::QNode *peer) Q_DECL_OVERRIDE;
+    void sceneChangeEvent(const Qt3DCore::QSceneChangePtr &e) Q_DECL_OVERRIDE;
+
+private:
+    int m_workGroups[3];
+};
+
+} // Render
+
+} // Qt3DRender
+
+QT_END_NAMESPACE
+
+#endif // QT3DRENDER_RENDER_DISPATCHCOMPUTE_H
diff --git a/src/render/framegraph/framegraph.pri b/src/render/framegraph/framegraph.pri
index c69da622c..422825629 100644
--- a/src/render/framegraph/framegraph.pri
+++ b/src/render/framegraph/framegraph.pri
@@ -47,7 +47,8 @@ HEADERS += \
     $$PWD/qlighting.h \
     $$PWD/qlighting_p.h \
     $$PWD/lighting_p.h \
-    $$PWD/qdispatchcompute.h
+    $$PWD/qdispatchcompute.h \
+    $$PWD/dispatchcompute_p.h
 
 SOURCES += \
     $$PWD/cameraselectornode.cpp \
@@ -82,4 +83,5 @@ SOURCES += \
     $$PWD/frustumculling.cpp \
     $$PWD/qlighting.cpp \
     $$PWD/lighting.cpp \
-    $$PWD/qdispatchcompute.cpp
+    $$PWD/qdispatchcompute.cpp \
+    $$PWD/dispatchcompute.cpp
diff --git a/src/render/framegraph/framegraphnode_p.h b/src/render/framegraph/framegraphnode_p.h
index b068b103a..764314438 100644
--- a/src/render/framegraph/framegraphnode_p.h
+++ b/src/render/framegraph/framegraphnode_p.h
@@ -82,7 +82,8 @@ public:
         StateSet,
         NoDraw,
         FrustumCulling,
-        Lighting
+        Lighting,
+        ComputeDispatch
     };
     FrameGraphNodeType nodeType() const { return m_nodeType; }