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// Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
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 ]
}
}
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