| /**************************************************************************** |
| ** |
| ** 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. |
| ** |
| ** $QT_BEGIN_LICENSE:BSD$ |
| ** Commercial License Usage |
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| ** 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: |
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| ****************************************************************************/ |
| |
| import QtQuick 2.2 as QQ2 |
| import Qt3D.Core 2.0 |
| import Qt3D.Render 2.0 |
| import Qt3D.Input 2.0 |
| import Qt3D.Extras 2.0 |
| |
| Entity { |
| id: sceneRoot |
| |
| Camera { |
| id: camera |
| projectionType: CameraLens.PerspectiveProjection |
| fieldOfView: 45 |
| aspectRatio: 16/9 |
| nearPlane : 0.1 |
| farPlane : 1000.0 |
| position: Qt.vector3d( 0.0, 0.0, -40.0 ) |
| upVector: Qt.vector3d( 0.0, 1.0, 0.0 ) |
| viewCenter: Qt.vector3d( 0.0, 0.0, 0.0 ) |
| } |
| |
| OrbitCameraController { |
| camera: camera |
| } |
| |
| components: [ |
| RenderSettings { |
| activeFrameGraph: ForwardRenderer { |
| clearColor: Qt.rgba(0, 0.5, 1, 1) |
| camera: camera |
| } |
| }, |
| // Event Source will be set by the Qt3DQuickWindow |
| InputSettings { } |
| ] |
| |
| readonly property Buffer translationBuffer: Buffer { |
| data: { |
| var array = new Float32Array(20 * 3) |
| for (var i = 0; i < 20; ++i) { |
| var j = i * 3; |
| array[j] = i * 4.0; |
| array[j + 1] = 0.0; |
| array[j + 2] = 0.0; |
| } |
| return array; |
| } |
| } |
| |
| readonly property Material instancedMaterial: Material { |
| effect: Effect { |
| techniques: Technique { |
| filterKeys: FilterKey { name: "renderingStyle"; value: "forward" } |
| |
| graphicsApiFilter { |
| api: GraphicsApiFilter.OpenGL |
| majorVersion: 3 |
| minorVersion: 2 |
| profile: GraphicsApiFilter.CoreProfile |
| } |
| |
| renderPasses: RenderPass { |
| shaderProgram: ShaderProgram { |
| vertexShaderCode: " |
| #version 150 |
| in vec3 vertexPosition; |
| in vec3 translation; |
| uniform mat4 mvp; |
| |
| void main() |
| { |
| gl_Position = mvp * vec4(vertexPosition + translation, 1.0); |
| } |
| " |
| |
| fragmentShaderCode: " |
| #version 150 |
| |
| out vec4 fragColor; |
| |
| void main() |
| { |
| fragColor = vec4(1.0, 0.0, 0.0, 1.0); |
| } |
| " |
| } |
| } |
| } |
| } |
| } |
| |
| GeometryRenderer { |
| id: torusMesh |
| instanceCount: 20 |
| geometry: torusGeometry |
| } |
| |
| TorusGeometry { |
| id: torusGeometry |
| minorRadius: 0.5 |
| attributes: [ |
| Attribute { |
| attributeType: Attribute.VertexAttribute |
| vertexBaseType: Attribute.Float |
| vertexSize: 3 |
| byteStride: 3 * 4 // vector3d |
| byteOffset: 0 |
| divisor: 1 // One translation per instance |
| name: "translation" |
| buffer: translationBuffer |
| } |
| ] |
| } |
| |
| // Doesn't work |
| // TorusMesh { |
| // id: torusMesh |
| // geometry.attributes: [ |
| // Attribute { |
| // attributeType: Attribute.VertexAttribute |
| // vertexBaseType: Attribute.Float |
| // vertexSize: 3 |
| // byteStride: 3 * 4 // vector3d |
| // byteOffset: 0 |
| // divisor: 1 // One translation per instance |
| // name: "translation" |
| // buffer: translationBuffer |
| // } |
| // ] |
| // } |
| |
| Transform { |
| id: torusTransform |
| rotation: fromAxisAndAngle(Qt.vector3d(1, 0, 0), 45) |
| } |
| |
| Entity { |
| id: torusEntity |
| components: [ torusMesh, instancedMaterial, torusTransform ] |
| } |
| } |