地球转动

Shader "Custom/cvjarEarth" {
    Properties{
        _MainTex("myTexture", 2D) = "white"{}
        _Cloud("mycolor", 2D) ="white"{}
        
    }
    
    SubShader{
        Tags{"Queue"="Transparent" "RenderType"="Transparent"}
    
            pass{
        CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #include "UnityCG.cginc"
            float4 _Color;
            sampler2D _MainTex;
            sampler2D _Cloud;
            
            struct v2f{
                float4 pos:SV_POSITION;
                float2 uv: TEXCOORD0;
            };
            float4 _MainTex_ST;
            v2f vert(appdata_base v){
                v2f o;
                o.pos = mul(UNITY_MATRIX_MVP, v.vertex);
                o.uv = TRANSFORM_TEX(v.texcoord, _MainTex);
                return o;
            }
            
            half4 frag(v2f i):COLOR{
                float u_x = i.uv.x + -0.2*_Time;
                float2 uv_earth=float2(u_x, i.uv.y);
                half4 texcolor_earth = tex2D(_MainTex, uv_earth);
                
                float2 uv_cloud;
                u_x = i.uv.x + -0.4*_Time;
                uv_cloud = float2(u_x, i.uv.y);
                half4 tex_cloudDepth = tex2D(_Cloud, uv_cloud); 
                half4 texcolor_cloud = float4(1,1,1,0) * (tex_cloudDepth.x);
                
                return lerp(texcolor_earth, texcolor_cloud, 0.5f);
            }
                
                
        ENDCG
        }
    }
}