备份CatanBuilding瘦身独立工程

LocalPackages/zzwater/shaders/libs/WaveObj.hlsl

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+
+//UNITY_SHADER_NO_UPGRADE
+#ifndef WATER_OBJ_INCLUDE
+#define WATER_OBJ_INCLUDE
+
+#ifndef GET_TF_FROM_M
+#define GET_TF_FROM_M(m) dot(float3(m[0].w, m[1].w, m[2].w),1)
+#endif
+
+inline float3 GetObjWaveDisplacement(float3 positionOS, float4 waterDir, float freq, float intensity, float factor)
+{
+    float3 positionWS = TransformObjectToWorld(positionOS);
+    float objFreq = _Time.y * freq + positionWS.y ;
+    float objPhase = objFreq + GET_TF_FROM_M(GetObjectToWorldMatrix()) * waterDir.w;
+
+    float branchPhase = objPhase + dot(positionOS.xyz,1);
+
+    float offset = sin(objPhase) + cos(branchPhase);
+    
+    return normalize(waterDir.xyz) * offset * factor * intensity;
+}
+
+void GGetObjWaveDisplacement_float(float3 positionOS, float4 waterDir, float freq, float intensity, float factor, out float3 Out)
+{
+    Out = GetObjWaveDisplacement(positionOS, waterDir, freq, intensity, factor);
+}
+
+#endif //WATER_OBJ_INCLUDE