Alpha channels on textures

Unity Engine
1

Hello guys,

I need to place some cut-out posters in my game, you know, the kind you find in the video rental looking kinda like this:

Thing is I don’t want the poster to be “squared”, but be cut around the edges of the guy. I have an image file with alpha channels so that part is pretty much ok, but I have no idea to implement this in Unity. I have a plane and I place the image as Texture2D.
Some shader maybe? I keep getting a white square around the whole thing.
[/img]

2

Use one of the transparency shaders.

–Eric

3

I see,
but I already have a shader made to show both sides
of my object, which looks like this

Shader "DoubleSided" {
	Properties {
		_Color ("Main Color", Color) = (1,1,1,1)
		_MainTex ("Base (RGB)", 2D) = "white" {}
	}
	SubShader {
		Pass{
		    Material {
                Diffuse (1,1,1,1)
            }
            Lighting On
            Cull off
			SetTexture [_MainTex] {
				constantColor [_Color]
                Combine Constant * Texture
            }
		}
	}
}

Could I add something to this one to keep the double side effect and still get the transparency values?

4

Use one of the transparent shaders and put “cull off” in it. Look in the shaderlab forum for the built-in shader source code.

–Eric

5

Here’s a version of the Transparent Diffuse shader with double sided triangles.

263833–9507–$alpha_diffuse_doublesided_163.shader (8.5 KB)