How Unigine displays OpenGL？

[XiaoShouzi]

How to display the image of OpenGL DLL in Unigine 3D scene, is there any implementation route or demo?

[silent]

liu.zhen

There is a method exists that can convert GL texture to the UNIGINE texture called Texture::FromGL().

Please refer to this thread for more code examples:

• https://developer.unigine.com/forum/topic/6936-opengl-invalid-operation-error
  They might be slightly outdated, but the general idea is the same.

Thanks!

[XiaoShouzi]

Is there a Demo for drawing external OpenGL programs for Unigine 3D scenes?

[silent]

I'm afraid no. Please heck the sample code from the forum thread and adjust for your requirements.

[XiaoShouzi]

There is a post talking about API (Render, RenderState or Texture classes), is there any reference?

[silent]

You can check basic C++ sample in SDK Browser to get a basic knowledge on Textures and Render classes usage:

• SDK Browser -> Samples -> C++ API -> Render

The rest of the information you can always found in the online (or offline) documentation:

• RenderState: https://developer.unigine.com/en/docs/2.14.1/api/library/rendering/class.renderstate?rlang=cpp
• Render: https://developer.unigine.com/en/docs/2.14.1/api/library/rendering/class.render?rlang=cpp (the page can take some time to load, there are a lot of methods)
• Texture: https://developer.unigine.com/en/docs/2.14.1/api/library/rendering/class.texture?rlang=cpp#

Thanks!