Source code for the OpenGL terrain renderer demo

I have been quite busy with various things in the last few weeks, but I have finally found some time to clean up and upload the code of the OpenGL terrain render demo to Github.

Since this was intended as a programming exercise I have not tried to be very elegant or correct during the implementation, so expect things like error handling to be a bit rough around the edges, but otherwise I think the code should be easy enough to follow.

Notice that I have only tested this on Intel GPUs. I know it works on NVIDIA too (thanks to Samuel and Chema for testing this) but there are a couple of rendering artifacts there, specifically at the edges of the skybox and some “pillars” showing up in the distance some times, probably because I am rendering one to many “rows” of the terrain and I end up rendering garbage. I may fix these some day.

The code I uploaded to the repository includes a few new features too:

  • Model variants, which are basically color variations of the same model
  • A couple of additional models (a new tree and plant) and a different rock type
  • Collision detection, which makes navigating the terrain more pleasent

Here is a new screenshot:

screenshot

In future posts I will talk a bit about some of the implementation details, so having the source code around will be useful. Enjoy!

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