Creating Textures
  - Textures- 
      - Texture heights and widths must be
        integral powers of 2:  32, 64, 128, 256.- 
          - No bigger than
            256 and square for last generation cards.
          
 -  
       
- Opaque and translucent textures
        shouldn't be mixed on one sheet; otherwise, sheeting is a good idea.
        
- Alpha channels aren't necessary for
        translucent textures that are rendered with the 'glow' blending mode.
        
- Translucent textures that fade to 0
        alpha need a 3 pixel border of 0 alpha to allow for mipping, filtering, etc.