iXce’s blog

Meh, I’ve been way too busy these days with school. Happily I should be mostly done with this year in a bit more than 40 hours among which 7 hours of examinations.

Anyway, I was able to pack together a simple but nice shader editor. It currently only supports fragment programs, but it works well. It’s built around pygtkglext and python-opengl, and makes use of ctypes to bind all the fragment programs related functions. Supporting vertex programs shouldn’t be too hard, actually most of what’s needed for it is already in place, it just needs some GUIfication.
All the required dependencies are in Gutsy’s Universe (pygtkglext wasn’t in Feisty’s).

Here’s a screenshot (click on the thumbnail to view the full resolution picture) :

Fresh-from-git source can be found at http://guillaume.segu.in/code/gshaderedit.git/ :
$ git clone http://guillaume.segu.in/code/gshaderedit.git/
$ cd gshaderedit
$ python gshaderedit.py

Should you find any bug, please report it to me by mail (you can find my address in the AUTHORS file).

As part of Summer of Code 2007, I’m going to work on color filtering through Compiz/Beryl.
The final goal of this project is to provide a flexible and efficient way to filter colors, switch through different filtering schemes or easily create custom filters.

Roadmap
June 18 : fragment program shaders test application to check the effect of a filter on an area of the screen or a picture (there’s currently no such software, only QShaderEdit which doesn’t support shaders on textures).
June 20 : filters (both test filters to see what color blind or vision impaired people actually see and corrective filters)
June 30 : working plugin using pre-defined filters
July 2 : easy switching through a customizable list of filters
July 10 : cumulative filters support
July 31 : configurator enabling user to preview the effects of a filter or a set of filters (using as much parts of the program used for testing filters) as well as making his own
August : debug, improvements, random ideas implementation, testing

Please note that this roadmap is just a kind of draft, especially since I might be still quite busy with school until June 17th (*sigh*, there are three written tests remaining, one per Saturday).

Blog : time eater.

There isn’t much to see around here at the moment, check my homepage for more infos (yes, I know, you’ll get stuck into a loop until you get bored).