Qt 3D

Qt 3D provides functionality for near-realtime simulation systems with support for 2D and 3D rendering in both Qt C++ and Qt Quick applications.

The functionality in Qt 3D is divided into the following C++ modules:

Qt 3D Core C++ Classes	The Qt 3D module contains functionality to support near-realtime simulation systems.
Qt 3D Input C++ Classes	The Qt 3D Input module provides classes for handling user input in applications using Qt3D.
Qt 3D Logic C++ Classes	The Qt 3D Logic module enables synchronizing frames with the Qt 3D backend.
Qt 3D Render C++ Classes	The Qt 3D Render module contains functionality to support 2D and 3D rendering using Qt 3D.

The following C++ modules are in still development but are available as technology previews:

Qt 3D Animation C++ Classes	The Qt 3D Animation modules provides a set of prebuilt elements to help you get started with Qt 3D.
Qt 3D Extras C++ Classes	The Qt 3D Extras module provides a set of prebuilt elements to help you get started with Qt 3D.
Qt 3D Scene2D C++ Classes	The Qt 3D Scene2D module provides a way to render Quick2 qml content to a Qt 3D texture.

For Qt Quick applications, Qt 3D provides the following QML modules:

Qt 3D Core QML Types	Provides core Qt 3D QML types.
Qt 3D Input QML Types	Provides QML types for Qt 3D user input.
Qt 3D Logic QML Types	Provides QML types to synchronize frames with the 3D backend.
Qt 3D Render QML Types	Provides Qt 3D QML types for rendering.

The following QML modules are in still development but are available as technology previews:

Qt 3D Extras QML Types	Provides Qt 3D QML types for the extras module.
Qt 3D Qt3DAnimation QML Types	Provides Qt 3D QML types for the animation module.
Qt 3D Scene2D QML Types	Provides Qt 3D QML types for the scene2d module.
Qt 3D Scene3D QML Types	Provides Qt 3D QML types for the Scene3D module.

Getting Started

For a C++ application that performs 2D or 3D rendering, collision detection, and also handle user input, add the following line to its qmake .pro file:

QT += 3dcore 3drender 3dinput 3dlogic 3dextras 3danimation

To include the definitions of the modules' classes, use the following directives:

#include <Qt3DCore>
#include <Qt3DRender>
#include <Qt3DInput>
#include <Qt3DLogic>
#include <Qt3DExtras>
#include <Qt3DAnimation>

A Qt Quick application requires also additional dependencies:

QT += 3dcore 3drender 3dinput 3dlogic 3dextras qml quick 3dquick 3danimation

Overview

The high level design and motivation for Qt 3D is described in the Qt 3D Overview. The Qt 3D Render aspect offers support for data-driven configuration as described in Qt 3D Render Framegraph.

Reference

• Qt 3D Overview
• Qt 3D C++ Classes
• Qt 3D QML Types
• Qt 3D Examples

Qt 3D Platform Support

Qt 3D has the following support for platforms:

• Microsoft Windows (win32) - Supported
• Linux X11 - Supported
• macOS - Supported although there may be some retina scaling issues
• Android - Supported
• Embedded Linux - Supported
• iOS - Supported since (Qt 5.7)
• WinRT - Not supported yet

Module Evolution

Changes to Qt3D lists important changes in the module API and functionality that were done for the Qt 6 series of Qt.

Licenses and Attributions

Qt 3D is available under commercial licenses from The Qt Company. In addition, it is available under the GNU Lesser General Public License, version 3, or the GNU General Public License, version 2. See Qt Licensing for further details.

Furthermore Qt 3D contains third party modules under following permissive licenses:

Assimp - Clipper, version 4.8.8	Boost Software License 1.0
Assimp - Open Asset Import Library, version 5.0.1	BSD 3-Clause "New" or "Revised" License
Assimp - Open3DGC	MIT License and BSD 2-Clause "Simplified" License
Assimp - Poly2Tri Polygon Triangulation Library	BSD 3-clause "New" or "Revised" License
Assimp - RapidJSON	MIT License and BSD 3-Clause "New" or "Revised" License
Assimp - The OpenDDL-Parser	MIT License
Assimp - Unzip, version 1.01e	zlib License
Assimp - Utf8Cpp	Boost Software License 1.0
Assimp - Zip	Public Domain
Assimp - irrXML	zlib License
Dear ImGui - ProggyClean.ttf	MIT License
Dear ImGui - stb	MIT License or Public Domain
Dear ImGui, version v1.66b	MIT License