Making glow happen

[zork]

http://elitistjerks.com/blogs/zork/4...tbackdrop.html

The trick is the alpha layer of the border texture.

Important. The border texture must be 8-times wider than high.

Example:
16px height = 128px width

32px height = 256px width

etc.

Max-texture size sind 2048px.

So max-size is
256 x 2048px

When you call the backdrop function play a bit with the inset and the edgesize values but keep your tilesize at the size of your texture height.

Each border texure must consist 8 parts, those will be enough to create any edge- or side-texture needed.

[Maul]

Neat trick

I always was tempted to mess with the those types of background textures, but did not know about the "the border texture must be 8-times wider than high" rule. Now I do!