Material doesn't have a color property '_Color' UnityEditor.DockArea:OnGUI()

[naveenrai8]

Hi All,

I am very new in unity and wanted to learn how to write custom shader. Hence, I started learning from here.

I wrote the same code mentioned in the tutorial but unfortunately it is giving me error:

Material doesn’t have a color property ‘_Color’ UnityEditor.DockArea:OnGUI()

Code:

Shader "Custom/NewShader" {
	Properties {
		_Color ("Color",Color) = (1,1,1,1)
	}
	SubShader {
		Pass {
			CGPROGRAM
	
			
			#pragma vertex vert
			#pragma fragment frag
	
	
			uniform float4 _Color;
	
			struct vertexInput {
				float4 vertex : POSITION;
			};
			struct vertexOutput {
				float4 pos : SV_POSITION;
			};
			
	
			vertexOutput vert(vertexInput i) {
				vertexOutput o;
				o.pos = mul(UNITY_MATRIX_MVP,v.vertex);
				return o;
			}
			
			float4 frag(vertexOutput i) : COLOR
			{
				return _Color;
			}
			ENDCG
		}
	} 
}

I searched unity forum but could not find anything related to it.
It would be great any one help to figure out where is the problem. I am using unity 4.0 pro version.

Please mention any other tutorial series that teach shader writing.

Many Thanks in advance!

[SarperS]

You’ve made a simple typo. In your vertex program you’ve tried to use v.vertex but you’ve declared vertexInput as i. So instead of writing v.vertex, you should type in i.vertex.