I have been wondering now for quite some time, how certain animated texture effects are done, specifically involving light effects.
Some good examples of what I mean are the green bridges in Darkspore, who have a pulsating light effect (pic), the light bridges in Portal or some spell effects from Oblivion (pic).
Are those effects purely done with shaders? And if so, how would you go about doing them? If I for example wished to create an effect, which would send little lightning bolts from a character models feet to the top as illustration that he got electrocuted, how would that work?
To my person: Although I am proficient in programming, I am mostly a beginner, when it comes to shaders. I understand most of the math behind it, but have almost no practical experience with them.
I hope you can clear things up for me a bit!
Thanks you for reading and in advance for any help! Christoph