Special Cases
Textures aren't infinite, in general, and sometimes one ends up with a pixel coordinate that lies outside the grid of texel coordinates. There are a few ways to handle this:
- Wrap the texture, so that the last texel in a row also comes right before the first, and the last texel in a column also comes right above the first. This works best when the texture is being tiled.
- Make the area outside the texture all one color. This may be of use for a texture designed to be laid over a solid background or to be transparent.
- Repeat the edge texels out to infinity. This works best if the texture is not designed to be repeated.
Read more about this topic: Bilinear Filtering
Famous quotes containing the words special and/or cases:
“In this century the writer has carried on a conversation with madness. We might almost say of the twentieth-century writer that he aspires to madness. Some have made it, of course, and they hold special places in our regard. To a writer, madness is a final distillation of self, a final editing down. It’s the drowning out of false voices.”
—Don Delillo (b. 1926)
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—Anna Ford (b. 1943)