Ok I solved my problem. I thought I have to create a parameter to access the individual matrices, but THX to Qt3D! I can use the uniforms defined in RenderView without creating a parameter for each uniform.
Best Regards, Andreas Von: Interest [mailto:interest-bounces+andreas.klos=izfp.fraunhofer...@qt-project.org] Im Auftrag von Klos, Andreas Gesendet: 03 November 2016 10:20 An: interest@qt-project.org Betreff: [Interest] Qt3D modelMatrix Good morning Qt-Community, Sry for this newbie question, but how can I use my own modelMatrix without using QTransform? I know that I have to create a QParameter to determine the uniform and the corresponding QMatrix4x4. After that I have to add it to a QEffect. But if I do so, how can I notify if the matrix has changed? It works perfectly with the QTransform and the usage of the mvp in the vertex shader. But if I multiply the position attribute with the modelMatrix, defined as described above, it does not work. It only works one time and after changing the matrix, nothing happens. I hope someone can give me a helpful hint. Best Regards, Andreas
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