- Qt 6.6
- Qt 3D
- Qt 6.6.3 Reference Documentation

# 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.

## 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:

Dear ImGui - ProggyClean.ttf | MIT License
Dear ImGui - stb | MIT License or Public Domain
Dear ImGui, version v1.66b | MIT License