• Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
  • Asset Store
  • Get Unity

UNITY ACCOUNT

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account
  • Blog
  • Forums
  • Answers
  • Evangelists
  • User Groups
  • Beta Program
  • Advisory Panel

Navigation

  • Home
  • Products
  • Solutions
  • Made with Unity
  • Learning
  • Support & Services
  • Community
    • Blog
    • Forums
    • Answers
    • Evangelists
    • User Groups
    • Beta Program
    • Advisory Panel

Unity account

You need a Unity Account to shop in the Online and Asset Stores, participate in the Unity Community and manage your license portfolio. Login Create account

Language

  • Chinese
  • Spanish
  • Japanese
  • Korean
  • Portuguese
  • Ask a question
  • Spaces
    • Default
    • Help Room
    • META
    • Moderators
    • Topics
    • Questions
    • Users
    • Badges
  • Home /
avatar image
0
Question by mirkojpn · Mar 04, 2019 at 05:20 AM · shadershadersshader programming

Shader issue with a 170 upper angle

Hello!

I have a mask by angle shader that work’s fine, but i ‘ getting a disappearing object on angle upper than 179 or -179,

Someone know a way to fix it?

For example when my _Angle value is 1 or -1 object insted to continue rotating it just disappear.

 Shader "Unlit/MaskedBasedOnAngle"
 {
     Properties
     {
         _MainTex("Base (A=Opacity)", 2D) = "" {}
         _Transparency("Transparency", Range(0.0,0.5)) = 0.25
         _Portion("Angle",Range(-1,1)) = 0
         _Size("Size",float) = 5
     }
         SubShader
     {
         Tags{ "Queue" = "Transparent"  "RenderType" = "Transparent" "IgnoreProjector" = "true" }
         Zwrite Off
         Cull Off
         Blend SrcAlpha OneMinusSrcAlpha
         Pass
     {
         CGPROGRAM
 
 #pragma vertex vert
 #pragma fragment frag
  
 #include "UnityCG.cginc"
         struct appdata
     {
         float4 vertex : POSITION;
         float2 uv : TEXCOORD0;
     };
     struct v2f
     {
         float2 uv : TEXCOORD0;
         float4 vertex : SV_POSITION;
         float3 worldSpacePos  : TEXCOORD1;
         float3 objectCenter : TEXCOORD2;
  
     };
     sampler2D _MainTex;
     float4 _MainTex_ST;
     float  _Transparency;
     float _Portion;
     float _Size;
 
     float4 setAxisAngle(float3 axis, float rad) {
         rad = rad * 0.5;
         float s = sin(rad);
         return float4(s * axis[0], s * axis[1], s * axis[2], cos(rad));
     }
  
     v2f vert(appdata v)
     {
         v2f o;
         o.vertex = UnityObjectToClipPos(v.vertex);
         o.uv = TRANSFORM_TEX(v.uv, _MainTex);
         o.worldSpacePos = mul(unity_ObjectToWorld, float4(v.vertex.xyz, 1)).xyz;
         o.objectCenter = mul(unity_ObjectToWorld, float4(0.0,0.0,0.0,1.0));
         return o;
     }
 
 #define TWO_PI 6.28318530718
     fixed4 frag(v2f i) : SV_Target
     {
         float3 v = normalize(i.worldSpacePos - i.objectCenter);
         half4 c = tex2D(_MainTex,i.uv);
         float angle =( atan2(v.y, v.z)/ TWO_PI*4.)+0.5 ;
 
         float t = (angle.xxx / _Size );
         c.a = 1.- smoothstep(0.079,0.08, abs(t - _Portion));
    
         return c;
     }
         ENDCG
     }
     }
 }
Comment
Add comment
10 |3000 characters needed characters left characters exceeded
▼
  • Viewable by all users
  • Viewable by moderators
  • Viewable by moderators and the original poster
  • Advanced visibility
Viewable by all users

0 Replies

· Add your reply
  • Sort: 

Your answer

Hint: You can notify a user about this post by typing @username

Up to 2 attachments (including images) can be used with a maximum of 524.3 kB each and 1.0 MB total.

Welcome to Unity Answers

If you’re new to Unity Answers, please check our User Guide to help you navigate through our website and refer to our FAQ for more information.

Before posting, make sure to check out our Knowledge Base for commonly asked Unity questions.

Check our Moderator Guidelines if you’re a new moderator and want to work together in an effort to improve Unity Answers and support our users.

Follow this Question

Answers Answers and Comments

166 People are following this question.

avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image avatar image

Related Questions

Shader Problem 0 Answers

Stretching when using world coordinates 2 Answers

Shader: How to write a shader that respects sorting order first and then depth 1 Answer

Referencing the current pixel's world coordinates in the SURF block of a shader 1 Answer

Is there a way to save global shader variables? 2 Answers


Enterprise
Social Q&A

Social
Subscribe on YouTube social-youtube Follow on LinkedIn social-linkedin Follow on Twitter social-twitter Follow on Facebook social-facebook Follow on Instagram social-instagram

Footer

  • Purchase
    • Products
    • Subscription
    • Asset Store
    • Unity Gear
    • Resellers
  • Education
    • Students
    • Educators
    • Certification
    • Learn
    • Center of Excellence
  • Download
    • Unity
    • Beta Program
  • Unity Labs
    • Labs
    • Publications
  • Resources
    • Learn platform
    • Community
    • Documentation
    • Unity QA
    • FAQ
    • Services Status
    • Connect
  • About Unity
    • About Us
    • Blog
    • Events
    • Careers
    • Contact
    • Press
    • Partners
    • Affiliates
    • Security
Copyright © 2020 Unity Technologies
  • Legal
  • Privacy Policy
  • Cookies
  • Do Not Sell My Personal Information
  • Cookies Settings
"Unity", Unity logos, and other Unity trademarks are trademarks or registered trademarks of Unity Technologies or its affiliates in the U.S. and elsewhere (more info here). Other names or brands are trademarks of their respective owners.
  • Anonymous
  • Sign in
  • Create
  • Ask a question
  • Spaces
  • Default
  • Help Room
  • META
  • Moderators
  • Explore
  • Topics
  • Questions
  • Users
  • Badges