[M] random by world pos

Assets/Test/UnderWater/testshader.shader

@@ -4,10 +4,6 @@ Shader "zzwater/testshader"
     Properties
     {
         _MainTex ("Albedo (RGB)", 2D) = "white" {}
-        _SwayFreq("Sway Frequency", Range(0,10)) = 1.0
-        _SubFreq("sub Frequency", Range(0,100)) = 1.0
-        _SwayIntensity("Sway Intensity", Range(0,2)) = 0.1
-        _WindDir("Wind Direction", Vector) = (1,0,0,0)
     }
 
     SubShader
@@ -35,54 +31,38 @@ Shader "zzwater/testshader"
             #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
             #include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Lighting.hlsl"
 
+            sampler2D _MainTex;
+            float4 _MainTex_ST;
+
             struct Attributes {
+                
                 float4 positionOS : POSITION;
                 float2 uv : TEXCOORD0;
-                float3 normalOS : NORMAL;
-                float4 color : COLOR;
             };
 
             struct Varyings
             {
                 float4 positionHCS : SV_POSITION;
                 float2 uv : TEXCOORD0;
-                float3 normalWS : TEXCOORD1;
-                float4 color : TEXCOORD2;
-                float r1 : TEXCOORD3;
+                float3 phase: TEXTCOORD1;
             };
 
-            sampler2D _MainTex;
-            float4 _MainTex_ST;
-            half _SwayFreq;
-            half _SubFreq;
-            half _SwayIntensity;
-            float4 _WindDir;
-
             Varyings vert (Attributes v)
             {
                 Varyings o;
-                o.positionHCS = TransformObjectToHClip(v.positionOS.xyz);
-                o.normalWS = TransformObjectToWorldNormal(v.normalOS);
+                float4x4 mx = GetObjectToWorldMatrix();
+                o.positionHCS = TransformObjectToHClip(v.positionOS);
+                float factor = dot(float3(mx[0].w, mx[1].w, mx[2].w), 1);
+                o.phase = sin(_Time.y * factor);
                 o.uv = TRANSFORM_TEX(v.uv, _MainTex);
-                o.color = v.color;
-                //o.r1 = dot(unity_ObjectToWorld[3].xyz, 1);;
-
-                float3 positionWS = TransformObjectToWorld(v.positionOS.xyz);
-                o.r1 = frac(dot(positionWS, 1));
                 return o;
             }
 
             half4 frag (Varyings i) : SV_Target
             {
                 half4 albedo = tex2D(_MainTex, i.uv);
-                //clip(albedo.a - 0.5);
-                return half4(i.r1,0,0, 1.0);
-                return half4(albedo.rgb, 1.0);
-                //Light mainLight = GetMainLight(TransformWorldToShadowCoord(i.positionHCS));
-                
-                // 简易光照模型[^2]
-                //half3 diffuse = mainLight.color * saturate(dot(i.normalWS, mainLight.direction));
-                //return half4(albedo.rgb * diffuse, 1.0);
+                clip(albedo.a - 0.5);
+                return float4(i.phase.xxx, 1);
             }
             ENDHLSL
         }