Texture Filtering
Used to alter the texel color
If only one texture map is available, then filtering modes are:
- Nearest (no filtering) - just use texel whose coordinates are closest to texture coordinate.
- Use method to convert (s,t) to (u,v) to get texel location
- Linear - used weighted average of 2x2 area of texels surrounding the desired pixel (also known as bilinear filtering).