GunSystem/Assets/shader/Mine/ShaderTest2.shader

// Upgrade NOTE: replaced '_Object2World' with 'unity_ObjectToWorld'

// Upgrade NOTE: replaced '_Object2World' with 'unity_ObjectToWorld'

// Upgrade NOTE: replaced '_World2Object' with 'unity_WorldToObject'
// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'

Shader "Unlit/ShaderTest2"
{
	Properties
	{
		_Diffuse("Diffuse",Color) = (1,1,1,1)
		_Specular("Specular",Color) = (1,1,1,1)
		_Gloss("Gloss",Range(8,256)) = 20
		_Texture("Texture",2D) = ""{}
	}
	SubShader
    {
        Pass
        {
            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
            #include "UnityCG.cginc"

            struct v2f {
				float2 uv : TEXCOORD1;
                half3 worldRefl : TEXCOORD0;
                float4 pos : SV_POSITION;
            };

			sampler2D _Texture;
			float4 _Texture_ST;
            
			v2f vert (float4 vertex : POSITION, float3 normal : NORMAL,float2 uv :TEXCOORD1)
            {
                v2f o;
                o.pos = UnityObjectToClipPos(vertex);
                // compute world space position of the vertex
                float3 worldPos = mul(unity_ObjectToWorld, vertex).xyz;
                // compute world space view direction
                float3 worldViewDir = normalize(UnityWorldSpaceViewDir(worldPos));
                // world space normal
                float3 worldNormal = UnityObjectToWorldNormal(normal);
                // world space reflection vector
                o.worldRefl = reflect(-worldViewDir, worldNormal);
				o.uv = TRANSFORM_TEX(uv,_Texture);
                return o;
            }
        
            fixed4 frag (v2f i) : SV_Target
            {
                // sample the default reflection cubemap, using the reflection vector
                half4 skyData = UNITY_SAMPLE_TEXCUBE(unity_SpecCube0, i.worldRefl);
                // decode cubemap data into actual color
                half3 skyColor = DecodeHDR (skyData, unity_SpecCube0_HDR);
                // output it!
                fixed4 c = 0;
                c.rgb = skyColor;
				c *= tex2D(_Texture,i.uv);
                return c;
            }
            ENDCG
        }
    }
}