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:

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

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

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

Using the Module

For a C++ application that performs 2D or 3D rendering, collision detection, and handles user input, include the following directives of the modules' classes:

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

To import the QML types into your application, use the following import statement in your .qml file:

 import Qt3D.Core
 import Qt3D.Render
 import Qt3D.Input
 import Qt3D.Logic
 import Qt3D.Extras
 import Qt3D.Animation
 import QtQuick.Scene2D
 import QtQuick.Scene3D

Using a Qt module's C++ API requires linking against the module library, either directly or through other dependencies. Several build tools have dedicated support for this, including CMake and qmake.

Building with CMake

Use the find_package() command to locate the needed module components in the Qt6 package:

 find_package(Qt6 REQUIRED COMPONENTS
     3DCore
     3DRender
     3DInput
     3DLogic
     3DExtras
     3DAnimation
 )
 target_link_libraries(mytarget PRIVATE
     Qt6::3DCore
     Qt6::3DRender
     Qt6::3DLogic
     Qt6::3DExtras
     Qt6::3DAnimation
 )

Building with qmake

To configure the module for building with qmake, add the modules to the QT variable in the project's .pro file:

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

A Qt Quick application requires additional dependencies:

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

Overview

The high level design and motivation for Qt 3D is described in the Qt 3D Overview. The Qt 3D Render 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: