diff options
Diffstat (limited to 'tests/manual/compute-particles/ParticlesScene.qml')
| -rw-r--r-- | tests/manual/compute-particles/ParticlesScene.qml | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/tests/manual/compute-particles/ParticlesScene.qml b/tests/manual/compute-particles/ParticlesScene.qml new file mode 100644 index 000000000..c3b6fa4ae --- /dev/null +++ b/tests/manual/compute-particles/ParticlesScene.qml @@ -0,0 +1,200 @@ +// Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB). +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only + +import Qt3D.Core 2.0 +import Qt3D.Render 2.0 +import Qt3D.Extras 2.0 + +Entity { + property alias particleStep: computeMaterial.particleStep + property alias finalCollisionFactor: computeMaterial.finalCollisionFactor + + readonly property int _SPHERE: 0 + readonly property int _CUBE: 1 + readonly property int _CYLINDER: 2 + readonly property int _TORUS: 3 + + property int particlesShape: _SPHERE + + signal reset() + + components: [ + RenderSettings { + ComputeFrameGraph { + camera: sceneCamera + } + // explicitly set RenderingPolicy to AlwaysRender, as changes in the + // scene won't be reflected in actual Qt scene-graph changes (due to + // GPU compute calls) + renderPolicy: RenderSettings.Always + } + ] + + FirstPersonCameraController { camera: sceneCamera } + + Camera { + id: sceneCamera + projectionType: CameraLens.PerspectiveProjection + viewCenter: Qt.vector3d(0, 0, 0) + position: Qt.vector3d(0, 0, -800) + nearPlane: 0.1 + farPlane: 1000 + fieldOfView: 25 + aspectRatio: 1.33 + } + + property int particlesCount: 50 * 1024 + readonly property int floatSize: 4 + + function buildParticlesBuffer() { + var byteSizeOfParticleData = 12; + var bufferData = new Float32Array(particlesCount * byteSizeOfParticleData); + var factor = 500.0; + for (var i = 0; i < particlesCount; ++i) { + var positionIdx = i * byteSizeOfParticleData; + var velocityIdx = i * byteSizeOfParticleData + 4; + var colorIdx = i * byteSizeOfParticleData + 8; + + for (var j = 0; j < 3; ++j) { + bufferData[positionIdx + j] = (Math.random() - 0.5) * factor; + bufferData[velocityIdx + j] = Math.random() * 2.0; + bufferData[colorIdx + j] = 0.75 + Math.sin(((i / 1024.0) + j * 0.333) * 6.0) * 0.25; + } + + bufferData[positionIdx + 3] = 1.0; + bufferData[velocityIdx + 3] = 0.0; + bufferData[colorIdx + 3] = 1.0; + } + return bufferData + } + + Buffer { + id: particleBuffer + // struct ParticleData + // { + // vec3 position; // Aligned to 4 floats + // vec3 velocity; // Aligned to 4 floats + // vec3 color; // Aligned to 4 floats + // }; + data: buildParticlesBuffer() + } + + onReset : { + particleBuffer.data = buildParticlesBuffer() + } + + Attribute { + id: particlePositionDataAttribute + name: "particlePosition" + attributeType: Attribute.VertexAttribute + vertexBaseType: Attribute.Float + vertexSize: 3 + divisor: 1 + byteStride: 12 * floatSize + buffer: particleBuffer + } + + Attribute { + id: particleColorDataAttribute + name: "particleColor" + attributeType: Attribute.VertexAttribute + vertexBaseType: Attribute.Float + vertexSize: 3 + divisor: 1 + byteOffset: 8 * floatSize + byteStride: 12 * floatSize + buffer: particleBuffer + } + + ComputeMaterial { + id: computeMaterial + dataBuffer: particleBuffer + } + + Entity { + id: particleComputeEntity + readonly property ComputeCommand particlesComputeJob: ComputeCommand {} + components: [ + particlesComputeJob, + computeMaterial + ] + } + + SphereGeometry { + id: sphereGeometry + rings: 10 + slices: 10 + radius: 1 + // Additional Attributes + attributes: [ + particlePositionDataAttribute, + particleColorDataAttribute + ] + } + + CuboidGeometry { + id: cubeGeometry + yzMeshResolution: Qt.size(2, 2) + xzMeshResolution: Qt.size(2, 2) + xyMeshResolution: Qt.size(2, 2) + // Additional Attributes + attributes: [ + particlePositionDataAttribute, + particleColorDataAttribute + ] + } + + CylinderGeometry { + id: cylinderGeometry + rings: 10 + slices: 10 + radius: 1 + length: 1.5 + // Additional Attributes + attributes: [ + particlePositionDataAttribute, + particleColorDataAttribute + ] + } + + TorusGeometry { + id: torusGeometry + rings: 10 + slices: 10 + radius: 1 + minorRadius: 0.5 + // Additional Attributes + attributes: [ + particlePositionDataAttribute, + particleColorDataAttribute + ] + } + + Entity { + id: particleRenderEntity + readonly property GeometryRenderer particlesRenderer: GeometryRenderer { + instanceCount: particlesCount + indexOffset: 0 + firstInstance: 0 + primitiveType: GeometryRenderer.Triangles + geometry: { + switch (particlesShape) { + case _SPHERE: + return sphereGeometry; + case _CUBE: + return cubeGeometry; + case _CYLINDER: + return cylinderGeometry; + case _TORUS: + return torusGeometry; + } + } + } + + components: [ + particlesRenderer, + computeMaterial + ] + } +} + |