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/****************************************************************************
**
** Copyright (C) 2015 Paul Lemire
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
import Qt3D.Core 2.0
import Qt3D.Renderer 2.0
Viewport {
property alias camera: cameraSelector.camera
CameraSelector {
id: cameraSelector
StateSet {
// Enable 3 clipping planes
renderStates: [
ClipPlane { plane: 0 },
ClipPlane { plane: 1 },
ClipPlane { plane: 2 },
DepthTest { func: DepthTest.LessOrEqual }
]
// Branch 1
LayerFilter {
// Render entities with their regular material
// Fills depth buffer for entities that are clipped
layers: ["content", "visualization"]
ClearBuffer {
buffers: ClearBuffer.ColorDepthBuffer
RenderPassFilter {
includes: Annotation { name: "pass"; value: "material" }
}
}
}
// Branch 2
ClearBuffer {
// Enable and fill Stencil to later generate caps
buffers: ClearBuffer.StencilBuffer
StateSet {
// Disable depth culling
// Incr for back faces
// Decr for front faces
// No need to output color values
renderStates: [
StencilTest {
front {
func: StencilTestSeparate.Always
ref: 0; mask: 0
}
back {
func: StencilTestSeparate.Always
ref: 0; mask: 0
}
},
StencilOp {
front.stencilDepthPass: StencilOpSeparate.Decr
back.stencilDepthPass: StencilOpSeparate.Incr
},
ColorMask { red: false; green: false; blue: false; alpha: false }
]
LayerFilter {
layers: "content"
RenderPassFilter {
includes: Annotation { name: "pass"; value: "stencilFill"; }
}
}
}
}
}
// Branch 3
StateSet {
// Draw caps using stencil buffer
LayerFilter {
layers: "caps"
RenderPassFilter {
includes: Annotation { name: "pass"; value: "capping"; }
}
}
// Draw back faces - front faces -> caps
renderStates: [
StencilTest {
front {
func: StencilTestSeparate.NotEqual
ref: 0; mask: ~0
}
back {
func: StencilTestSeparate.NotEqual
ref: 0; mask: ~0
}
}
]
}
}
}
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