Glowing light [HELP] :'(

Question

Hi. i am just creating a 2d light bar(or you can say a rod of light) in unity. i have no idea how to do it. I have actually used light shader script to get the bar to glow. is there any other way to do it other than that?

the light bar must glow inside the bar. the background can be white or light colours. How to make it glow in that case? (the light bar will be moving up and down)

Any help will be highly appreciated. thankyou

Answer 1

i find this asset on github quite usefull for 2d sprite glowing, maybe it helps you aswell!

Sprite Glow Github Link

or try this with sprites

  Shader "Sprites/ShinyDefault"
  {
      Properties
      {
          [PerRendererData] _MainTex("Sprite Texture", 2D) = "white" {}
          _Color("Tint", Color) = (1,1,1,1)
          _ShineLocation("ShineLocation", Range(0,1)) = 0
          _ShineWidth("ShineWidth", Range(0,1)) = 0
          [MaterialToggle] PixelSnap("Pixel snap", Float) = 0
      }
  
          SubShader
      {
          Tags
      {
          "Queue" = "Transparent"
          "IgnoreProjector" = "True"
          "RenderType" = "Transparent"
          "PreviewType" = "Plane"
          "CanUseSpriteAtlas" = "True"
      }
  
          Cull Off
          Lighting Off
          ZWrite Off
          Blend One OneMinusSrcAlpha
  
          Pass
      {
          CGPROGRAM
  #pragma vertex vert
  #pragma fragment frag
  #pragma multi_compile _ PIXELSNAP_ON
  #include "UnityCG.cginc"
  
      struct appdata_t
      {
          float4 vertex   : POSITION;
          float4 color    : COLOR;
          float2 texcoord : TEXCOORD0;
      };
  
      struct v2f
      {
          float4 vertex   : SV_POSITION;
          fixed4 color : COLOR;
          float2 texcoord  : TEXCOORD0;
      };
  
      fixed4 _Color;
  
      v2f vert(appdata_t IN)
      {
          v2f OUT;
          OUT.vertex = mul(UNITY_MATRIX_MVP, IN.vertex);
          OUT.texcoord = IN.texcoord;
          OUT.color = IN.color * _Color;
  #ifdef PIXELSNAP_ON
          OUT.vertex = UnityPixelSnap(OUT.vertex);
  #endif
  
          return OUT;
      }
  
      sampler2D _MainTex;
      sampler2D _AlphaTex;
      float _AlphaSplitEnabled;
      float _ShineLocation;
      float _ShineWidth;
  
      fixed4 SampleSpriteTexture(float2 uv)
      {
          fixed4 color = tex2D(_MainTex, uv);
  
  #if UNITY_TEXTURE_ALPHASPLIT_ALLOWED
          if (_AlphaSplitEnabled)
              color.a = tex2D(_AlphaTex, uv).r;
  #endif //UNITY_TEXTURE_ALPHASPLIT_ALLOWED
  
          
      
          
          float lowLevel = _ShineLocation - _ShineWidth;
          float highLevel = _ShineLocation + _ShineWidth;
          float currentDistanceProjection = (uv.x + uv.y) / 2;
          if (currentDistanceProjection > lowLevel && currentDistanceProjection < highLevel) {
              float whitePower = 1- (abs(currentDistanceProjection - _ShineLocation ) / _ShineWidth);
              color.rgb +=  color.a * whitePower;
          }
          
          return color;
      }
  
      fixed4 frag(v2f IN) : SV_Target
      {
          fixed4 c = SampleSpriteTexture(IN.texcoord) * IN.color;
          c.rgb *= c.a;
  
      return c;
      }
          ENDCG
      }
      }
  }

Glowing light [HELP] :'(

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