This will be a very short post, as I only want to introduce you Xenko Engine. It's a modern, open-source, 2D/3D cross-platform engine by Silicon Studio that has a plenty of cool features: scene editor, VR support, physics, animation, PBR and many more. Xenko is very similar to Unity because it also uses C#, so working with it wouldn't be painful. In addition, it has its own Xenko Shader Language that is based on HLSL. That's why I'd like to show you a couple of small shaders which I implemented while playing with the engine last night. They're just simple color tranformations: inversion, thermal vision and posterization. Nothing special, however, I find it kind of useful in order to understand how things work :)
Ok, so let's start with something difficult - color inversion... Of course, it's ridiculously simple! We just subtract our input color values and that's it :)
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| Inversion effect |
Then we move to the thermal vision effect. You should understand that it's still a "fake" simulation of heat vision. However, it might be useful in some cases. Again - super simple: make gradient, calculate pixel's luminance and change it's color using linear interpolation. Here's the code:
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| Thermal Vision |
Lastly, posterization effect. It is a process of a continuous gradation of tone to regions of fewer tones, with abrupt changes. Shader itself is quite simple, too, although, you may play with some settings: gamma value and number of colors.
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| Posterization Effect |
If you want to add your own custom transform shaders, some .cs scripts should also be included. You can read more in Xenko's documentation. Don't worry, I will put everything into an archive down below. Oh, and by the way, some people may notice that I am inheriting Texturing on top of my shaders but I do not use any textures. That's true! I just wanted to show you that it is possible to create your own custom textures and implement more complicated and fancy effects, such as blur, for example.
Link to the archive: download
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