How to create a bloom effect using OpenGL 2.0

Category: Developers •

Feb 20, 2007

This tutorial uses OpenGL 2.0 and shows how to use framebuffer objects to achieve a bloom effect.  (A bloom effect spreads out a light source so it brightens an image and gives it a “hazy” look ). A two-pass Gaussian filter is implemented. It also explains how to exploit hardware filtering to reduce the number of texture lookups.