Quake III Arena Cell Shading, modification for Quake III Arena which makes the game look like a painting or cartoon.

Quake III Arena Cell Shading is a modification for Quake III Arena which makes the game look like a painting or cartoon. Two techniques are used. The default one (Kuwahara filtering) simplifies the texture a bit, and the second one removes the texture, so it looks plain.

The goal of this project is to add Cell Shading capabilities to the Quake III engine with Real-time performance.

In order to provide such feature we have decided to use Kuwahara filter. Kuwahara filter is a noise-reduction filter that preserves edges.

It uses four subquadrants to calculate the mean and variance and chooses the mean value for the region with the smallest variance.

To increase the hand-painted effect we have decided to apply a simple blur filter to reduce hard-edges on textures and increase the flatness effect.

To produce the cell shading effect we use no graphics card shaders, so our implementation could run with almost any gfx card. The edge effect is produced by painting backface polygons with a thick wireframe without textures and repaint all the scene, but this time, with textures.

We have also implemented a different algorithm (we call it White Texture) , which uses white textures. It looks like this and this, you can set the console variable r_celshadalgo to 2, and load another map, or run using the appropiate link that came with the release.

To test our modified engine just place our binary in your game's folder to frag all day long!

Ensure you have a copy of Quake 3 Arena installed on your PC. You're going to need the artwork/content from the game because it is not redistributable.

Lastest version.

Version 1.0 sports a new alternative cell shading algorithm (white texture) and a lot of bug fixes. See the change list and screenshots, or download it. It's recommended that you enable antialiasing, and by the way, Windows users should download the MSI package and uninstall the previous version.


Screenshots.

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Imagehosting at Imageloop


Imagehosting at Imageloop


Imagehosting at Imageloop

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About Giampaolo Rossi.

Fond of computer and video games. Stay informed of the latest news on games for Linux and Android. The future of gaming is in Linux. All you need to know about How to play Windows games on Linux.
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