Question by msganeshsharma · Mar 20, 2018 at 01:27 PM · shader shader programming shaderlab

How can I add Alpha to texture animation shader...? Actually i am noob.. Here is the shader .

Shader "TextureAnimation" { Properties { _MainTex ("Texture", 2D) = "white" {} _Color ("Color", Color) = (1, 1, 1, 1)

     _Cols ("Cols Count", Int) = 5
     _Rows ("Rows Count", Int) = 3
     _Frame ("Per Frame Length", Float) = 0.5
 }

 SubShader
 {
     Tags { "RenderType"="Opaque" }
     LOD 100

     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;
         };

         sampler2D _MainTex;
         float4 _MainTex_ST;

         fixed4 _Color;

         uint _Cols;
         uint _Rows;

         float _Frame;
         
         fixed4 shot (sampler2D tex, float2 uv, float dx, float dy, int frame) {
             return tex2D(tex, float2(
                 (uv.x * dx) + fmod(frame, _Cols) * dx,
                 1.0 - ((uv.y * dy) + (frame / _Cols) * dy)
             ));
         }
         
         v2f vert (appdata v) {
             v2f o;
             o.vertex = UnityObjectToClipPos(v.vertex);
             o.uv = TRANSFORM_TEX(v.uv, _MainTex);
             return o;
         }
         
         fixed4 frag (v2f i) : SV_Target {
             int frames = _Rows * _Cols;
             float frame = fmod(_Time.y / _Frame, frames);
             int current = floor(frame);
             float dx = 1.0 / _Cols;
             float dy = 1.0 / _Rows;

         
             int next = floor(fmod(frame + 1, frames));
             return lerp(shot(_MainTex, i.uv, dx, dy, current), shot(_MainTex, i.uv, dx, dy, next), frame - current) * _Color;
         }

         ENDCG
     }
 }

}

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