I have created a radial distortion algorithm in a Fragment Shader that distorts my 2D texture. But, when it distorts, the edges of the texture are streteched inward creating “streaking”. I’d like this to be black… I’m thinking that putting a black border on the texture would work. But, I can’t figure out how to put a black border on the texture.
Right now, I’m using gluBuild2DMipmaps since my image is not 2^n and when I try and scale it myself using gluScaleImage it comes out very choppy. Is there a way to add a black border to my texture using gluBuild2DMipmaps?