The marvelous world of shaders

You might have noticed that OpenClonk’s model rendering code is able to provide nicely detailed graphics even when you zoom in. The landscape however looks like this when zoomed:

Click me for full resolution!

This is because the landscape of Clonk is stored like a raster graphic – if one zooms in, it becomes blurry or pixelated.

If you look around in our forum from time to time, you might have noticed that PeterW has been playing around with a pixel shader to implement a scaling algorithm, namely the hq3x. The result of his work looks like this:

Click me for full resolution!

Notice that his shader not only scales the display of the landscape very nicely but also implements a simple lightning model similar to the lightning in Clonk Rage.

PeterW implemented the feature in the engine already. So to test this, just grab a recent development snapshot and enable the option “High resolution landscape” in the options. Should you encounter rendering problems, post it in the forum (with a screenshot)

By the way, the shader code can be found in Graphics.ocg/LandscapeShader.c, so each scenario can theoretically define it’s own shaders for awesome effects.

  1. Milkman says:


  2. Clonkex says:


    Is the description meant to say “simple lightning model” or “simple lighting model”?


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