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PluginOpenGL-Shaders

README.md

Draw OpenGL shaders in the 3D view

This example shows how to customize the 3D view of RoboDK using RoboDK OpenGL shaders (method 1).

There are 2 ways of drawing OpenGL with RoboDK:

  1. If you are using the default version of RoboDK (C:/RoboDK/bin/RoboDK.exe) you can directly use RoboDK shaders. To draw primitives such as Triangles, Lines or points you should call RDK->DrawGeometry.

  2. If you prefer using Desktop OpenGL (fixed pipeline without shaders), you should use the GL2 compatible binary: C:/RoboDK/bin/RoboDK-GL2.exe. This binary allows you to use OpenGL functions like PushMatrix(), MulMatrix(), PopMatrix(), GLBegin(), GLEnd(), etc. The example PluginOpenGL shows how to draw OpenGL commands using OpenGL's fixed pipeline.

Important: Make sure you select Tools-Options-Set default settings when you switch from RoboDK-GL2.exe and RoboDK.exe binaries.

Notes

  • PluginEvent with event type DrawGeometry is triggered when we need to redraw the 3D view: pPlugin->PluginEvent. This function is called with the OpenGL context active.

  • Use RDK->DrawGeometry to display primitives such as triangles, lines or points when the context is active.

  • Use RDK->Render to schedule redrawing the OpenGL scene.

It is also possible to simulate cameras with custom shaders (creating a plugin is not required): https://robodk.com/blog/realistic-camera-simulation-shaders/

Qt Project settings

*.pro file

The following configuration is required in the PRO file to build with support for OpenGL:

  • QT += opengl
  • LIBS += opengl32.lib

Run settings

You should enter the following information in the Projects-Run settings window:

  • Executable: C:/RoboDK/bin/RoboDK.exe
  • Arguments: -PLUGINSUNLOAD -PLUGINLOAD=%{CurrentProject:FileBaseName}