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Question by naveenrai8 · May 03, 2013 at 07:57 AM · shadershader writing

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

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!

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avatar image SarperS · May 03, 2013 at 11:38 AM 0
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This one is pretty good also if you are ai$$anonymous$$g vertex/fragment shaders as opposed to surface shaders http://en.wikibooks.org/wiki/Cg_Program$$anonymous$$g/Unity

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Answer by SarperS · May 03, 2013 at 11:42 AM

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.

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avatar image naveenrai8 · May 03, 2013 at 12:02 PM 0
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Thanks a lot Sarper!!! I did a very silly mistake :(

avatar image SarperS · May 03, 2013 at 01:22 PM 0
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Please feel free to check my answer as the correct one so this entry closes as "solved"

avatar image naveenrai8 · May 03, 2013 at 04:43 PM 0
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Thanks a lot Sarper! Please mark this thread as "Solved".

avatar image SarperS · May 03, 2013 at 04:50 PM 0
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You are welcome, but I can't, you have to check it as "solved" :)

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