Tree billboard shader help (cutout and only follow rotation on Y axes)

Unity Engine
1

I’ve been running around in circles with this and don’t seem to be getting anywhere, Also athough I’ve made the texture a cutout, it still renders as an alpha and seems to blankly ignore my changes. It’s definitely reading the shader as when i comment things out it has an effect. Could someone take a look?

Shader "Hidden/TerrainEngine/BillboardTree" {
	Properties {
		_MainTex ("Base (RGB) Alpha (A)", 2D) = "white" {}
		_Cutoff ("Cutoff", float) = 0.5
	}
	
	SubShader {
		
		Pass {
			ColorMask rgb
			Blend SrcAlpha OneMinusSrcAlpha
			ZWrite Off Cull Off
			
			CGPROGRAM
			#pragma vertex vert
			#include "UnityCG.cginc"
			#include "TerrainEngine.cginc"
			#pragma fragment frag

			struct v2f {
				float4 pos : POSITION;
				fixed4 color : COLOR0;
				float2 uv : TEXCOORD0;
			};

			v2f vert (appdata_tree_billboard v) {
				v2f o;
				TerrainBillboardTree(v.vertex, v.texcoord1.xy, v.texcoord.y);	
				o.pos = mul (UNITY_MATRIX_MVP, v.vertex);
				o.uv.x = v.texcoord.x;
				o.uv.y = v.texcoord.y > 0;
				o.color = v.color;
				return o;
			}

			sampler2D _MainTex;
			fixed _Cutoff;
			fixed4 frag(v2f input) : COLOR
			{
				fixed4 col = tex2D( _MainTex, input.uv);
				col.rgb *= input.color.rgb;
				clip(col.a);
				return col;
			}
			ENDCG			
		}
	}
	Fallback Off
}
2

Everything I try just throws up loads of errors forcing me to change it back. I’ve spent a good 2 hours on this and gotten nowhere with either issue.

3

I’m not sure I understand this: “Also athough I’ve made the texture a cutout, it still renders as an alpha and seems to blankly ignore my changes”. So, you make changes to the texture alpha, and get no results? If that is the case, you probably lack a background layer in your photoshop file. The alpha layer will only be read by unity, if the file has a background layer. Or else it will simply just use the transparence of the main layer stack.
As for the shader itself, I’m not sure what you want it to do compared to what it actually does. Please elaborate a little on your problems :slight_smile: