Texture Mask

Created by Ablaze

This simple shader will mask off areas of a texture. This is useful for, say, when you really want to make your minimap round. To make a round object you would:
 * put a black border around a white circle and import that into unity.
 * Change the texture format to Alpha 8 bit and check "Build Alpha from Grayscale"
 * Create a shader with the code below.
 * Create a new plane and import your texture on to it.
 * Select the shader you created.
 * Drop your culling mask in to it.

That easy!