[Shader?] How to make shader show either white or a transparent texture?

Unity Engine
1

Hello!

Is there a material that I can use to make a texture show as pure white and transparent? Almost all the shaders I’m trying out will tint my material white but not make it pure white. If such a shader isn’t available, could someone show me to a place where I can learn the Cg to make it happen?

I’ve only written one shader. It was simple and two years ago.

Shader Goals:

  • Shader takes a float 0-1.
  • If float is 0, show unlit transparent texture.
  • If float is 1, show pure white and transparency
  • If in the middle, texture should be fading to white.
2

I’m not good with shaders, but maybe it isn’t showing as pure while because of Unity’s ambient light? you could use pragma noambient to prevent that Õ 3 Õ

3

Could you use a Sprite for this purpose? (e.g. create a 16x16 pure white texture, import it as a sprite) The default sprite shader would work nicely.

Alternately, check out the AlphaSelfIllum shader (the shader I can’t believe is STILL not included by default in Unity).