I wonder what techniques are used in general to draw an arbitrary moving object fading path trace. Such as a sword or car for example.
Jump to content
Subscribe to GameDev.net Direct to receive the latest updates and exclusive content.
Guest, the last post of this topic is over 60 days old and at this point you may not reply in this topic. If you wish to continue this conversation start a new topic.
Posted 19 January 2014 - 04:22 AM
One approach is have attractors on the start and end of your trace creating object ( such as the hilt and tip of a sword ), and create bands of geometry every frame from these attractor positions. Simplest form of that is one band being 2 verts, one for each attractor / end of the band, have a dynamic vertex buffer which you fill up with all active band vertices, from newest to oldest ( or the other way around ). You can use vertex colours for fading it out. Then render it as a tri strip, and job done
GameDev.net™, the GameDev.net logo, and GDNet™ are trademarks of GameDev.net, LLC.