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+/****************************************************************************
+**
+** Copyright (C) 2019 Klaralvdalens Datakonsult AB (KDAB).
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt3D module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** 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.
+**
+** BSD License Usage
+** Alternatively, you may use this file under the terms of the BSD license
+** as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+** * Redistributions of source code must retain the above copyright
+** notice, this list of conditions and the following disclaimer.
+** * Redistributions in binary form must reproduce the above copyright
+** notice, this list of conditions and the following disclaimer in
+** the documentation and/or other materials provided with the
+** distribution.
+** * Neither the name of The Qt Company Ltd nor the names of its
+** contributors may be used to endorse or promote products derived
+** from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import Qt3D.Core 2.14
+import Qt3D.Render 2.14
+
+Material {
+ property Buffer dataBuffer;
+ property real particleStep: 0.4
+ property real finalCollisionFactor: 0.2
+
+ parameters: [
+ Parameter { name: "particleStep"; value: particleStep },
+ Parameter { name: "finalCollisionFactor"; value: finalCollisionFactor }
+ ]
+
+ ShaderProgram {
+ id: computeShader
+ computeShaderCode: loadSource("qrc:/particles.comp")
+ }
+
+ ShaderProgram {
+ id: drawShader
+ vertexShaderCode: loadSource("qrc:/particles.vert")
+ fragmentShaderCode: loadSource("qrc:/particles.frag")
+ }
+
+ effect: Effect {
+ techniques: [
+ Technique {
+ renderPasses: [
+ RenderPass {
+ shaderProgram: computeShader
+ // We set the buffer as the parameter data
+ parameters: [
+ Parameter { name: "Particles"; value: dataBuffer }
+ ]
+ }
+ ]
+ filterKeys: [
+ FilterKey { name: "type"; value: "compute" }
+ ]
+ graphicsApiFilter {
+ api: GraphicsApiFilter.OpenGL
+ profile: GraphicsApiFilter.CoreProfile
+ majorVersion: 4
+ minorVersion: 3
+ }
+ },
+ Technique {
+ renderPasses: [
+ RenderPass {
+ shaderProgram: drawShader
+ // We assume the mesh to be drawn will also receive
+ // Vertex buffers attributes that will be used to position and color
+ }
+ ]
+ filterKeys: [
+ FilterKey { name: "type"; value: "draw" }
+ ]
+ graphicsApiFilter {
+ api: GraphicsApiFilter.OpenGL
+ profile: GraphicsApiFilter.CoreProfile
+ majorVersion: 4
+ minorVersion: 3
+ }
+ }
+ ] // techniques
+ }
+}
+