A new article by Francis 'DeathWish' Woodhouse has been posted entitled Real-Time "TRON 2.0" Glow For Low-Spec Hardware.

[The last article was only suitable for high-end hardware.] This article aims to rectify that. Using the same basic algorithm as before, I will describe how you can implement this glow effect without the use of any vertex or pixel shaders. All the hardware requires is the GL_NV_texture_rectangle OpenGL extension (or better), which is supported on even fairly low-end cards. As before, this article will walk you through the steps necessary to implement this in your modification.

Check out the full article!