The very talented demo scene coder IQ (Iñigo Quilez) held a talk about procedural graphics recently and he has provided the slides as a pdf-download:
http://rgba.scenesp.org/iq/divulgation/ ... re2008.htm
Lots of interesting stuff in the slides, including short pieces of code that could probably be adapted for use in ZGE-expressions.
Interesting information about 4k-graphics
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