- Qt 6.6
- Qt Quick 3D
- Qt Quick 3D Examples and Tutorials
- Qt Quick 3D - Volumetric Rendering Example
- Qt Quick 3D | Commercial or GPLv3

# Qt Quick 3D - Volumetric Rendering Example

     // Copyright (C) 2023 The Qt Company Ltd.
     // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

     VARYING vec3 ray_direction_model; // The direction from camera eye to vertex in model space

     void MAIN()
     {
         POSITION = MODELVIEWPROJECTION_MATRIX * vec4(VERTEX, 1.0);
         ray_direction_model = VERTEX - (inverse(MODEL_MATRIX) * vec4(CAMERA_POSITION, 1.0)).xyz;
     }