FootBallHead

0 comments by FootBallHead on Nov 21st, 2009 digg this super bookmark

Today, I tried creating some motion blur, and got a bit of success! This was done in a few hours in Blitz3D, and turned out to be something that works... sort of.

It is computationally expensive, very finicky, doesn't look the greatest, makes me dizzy, has bugs, and probably wouldn't work in a video game. However, I did this with little to no knowledge of how it is "normally" done.

The following is also explained in the video description on YouTube, but I will explain again. What I did was create a simple surface with 2 triangles, set it's transparency to "slighty transparent", and placed it directly in front of the camera. Every time the game code runs, it takes a picture of the backbuffer (something you don't see) and textures that surface. Since the surface contains a transparent view of the previous frames on a transparent surface, it becomes more transparent, thus creating a blur. Soon enough, it becomes so transparent that it is just written over top of, ending the blur trail. (I hope this makes sense!)

That's all for now!