From 71aef1eb6a46d527046d3f42b395078748f77405 Mon Sep 17 00:00:00 2001
From: lLcrowe <llcrowe@ictway.co.kr>
Date: Thu, 21 Aug 2025 17:58:06 +0900
Subject: [PATCH] StencilShadowVolume.Shader from CesiumJS to Unity

---
 .../CesiumForUnityStencilShadowVolume.shader  | 84 +++++++++++++++++++
 ...iumForUnityStencilShadowVolume.shader.meta |  9 ++
 .../CesiumForUnityStencilShadowVolume_Mat.mat | 30 +++++++
 ...umForUnityStencilShadowVolume_Mat.mat.meta |  8 ++
 4 files changed, 131 insertions(+)
 create mode 100644 Runtime/Resources/CesiumForUnityStencilShadowVolume.shader
 create mode 100644 Runtime/Resources/CesiumForUnityStencilShadowVolume.shader.meta
 create mode 100644 Runtime/Resources/CesiumForUnityStencilShadowVolume_Mat.mat
 create mode 100644 Runtime/Resources/CesiumForUnityStencilShadowVolume_Mat.mat.meta

diff --git a/Runtime/Resources/CesiumForUnityStencilShadowVolume.shader b/Runtime/Resources/CesiumForUnityStencilShadowVolume.shader
new file mode 100644
index 00000000..1c09addb
--- /dev/null
+++ b/Runtime/Resources/CesiumForUnityStencilShadowVolume.shader
@@ -0,0 +1,84 @@
+Shader "Custom/CesiumForUnityStencilShadowVolume"
+{
+    Properties
+    {        
+        _Color ("Color",Color) = (1,1,1,1)
+    }
+    SubShader
+    {
+        Tags { "RenderType"="Opaque" "RenderPipeline"="UniversalPipeline" }
+        
+        //Using double-sided stencil, configured with 2 passes
+        Pass
+        {
+            Name "StencilDepthRenderState"
+            Tags{"LightMode" = "Step1"}
+            Cull Off
+            Stencil
+            {
+                Ref 0 
+                //Comp always//equal
+
+                CompFront Always
+                FailFront Keep
+                ZFailFront DecrWrap
+                PassFront Keep
+
+                CompBack Always
+                FailBack Keep
+                ZFailBack IncrWrap
+                PassBack Keep
+            }
+            ZTest On
+            ZWrite Off
+            ColorMask 0
+        }
+        Pass
+        {
+            Name "StencilColorRenderState"
+            Tags{"LightMode" = "Step2"}
+            Cull Off
+            Stencil
+            {
+                Ref 0
+
+                CompFront NotEqual
+                FailFront Zero
+                ZFailFront Zero
+                PassFront Zero
+
+                CompBack NotEqual
+                FailBack Zero
+                ZFailBack Zero
+                PassBack Zero
+            }
+            ZTest Off
+            ZWrite Off
+            Blend SrcAlpha OneMinusSrcAlpha
+            
+            HLSLPROGRAM
+            #pragma vertex vert
+            #pragma fragment frag
+            # include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
+
+            //Using To UnityProperty
+            half4 _Color;
+
+            float4 vert(float4 positionOS:POSITION): SV_POSITION
+            {
+                //ObjectSpace To ClipSpace
+                float4 OUT;
+                OUT = TransformObjectToHClip(positionOS.xyz);
+                return OUT;
+            }
+            half4 frag(): SV_Target
+            {
+                //Set to Color
+                //half4 color = half4(0,1,0,1);
+                half4 color = _Color;
+                return color;
+            }
+            ENDHLSL
+        }
+    }
+}
\ No newline at end of file
diff --git a/Runtime/Resources/CesiumForUnityStencilShadowVolume.shader.meta b/Runtime/Resources/CesiumForUnityStencilShadowVolume.shader.meta
new file mode 100644
index 00000000..bc7cbd10
--- /dev/null
+++ b/Runtime/Resources/CesiumForUnityStencilShadowVolume.shader.meta
@@ -0,0 +1,9 @@
+fileFormatVersion: 2
+guid: b89edf0f547ce004ca69ca33d00656bd
+ShaderImporter:
+  externalObjects: {}
+  defaultTextures: []
+  nonModifiableTextures: []
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Runtime/Resources/CesiumForUnityStencilShadowVolume_Mat.mat b/Runtime/Resources/CesiumForUnityStencilShadowVolume_Mat.mat
new file mode 100644
index 00000000..9b0a3d0e
--- /dev/null
+++ b/Runtime/Resources/CesiumForUnityStencilShadowVolume_Mat.mat
@@ -0,0 +1,30 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!21 &2100000
+Material:
+  serializedVersion: 8
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_Name: CesiumForUnityStencilShadowVolume_Mat
+  m_Shader: {fileID: 4800000, guid: b89edf0f547ce004ca69ca33d00656bd, type: 3}
+  m_Parent: {fileID: 0}
+  m_ModifiedSerializedProperties: 0
+  m_ValidKeywords: []
+  m_InvalidKeywords: []
+  m_LightmapFlags: 4
+  m_EnableInstancingVariants: 0
+  m_DoubleSidedGI: 0
+  m_CustomRenderQueue: -1
+  stringTagMap: {}
+  disabledShaderPasses: []
+  m_LockedProperties: 
+  m_SavedProperties:
+    serializedVersion: 3
+    m_TexEnvs: []
+    m_Ints: []
+    m_Floats: []
+    m_Colors:
+    - _Color: {r: 1, g: 1, b: 1, a: 1}
+  m_BuildTextureStacks: []
diff --git a/Runtime/Resources/CesiumForUnityStencilShadowVolume_Mat.mat.meta b/Runtime/Resources/CesiumForUnityStencilShadowVolume_Mat.mat.meta
new file mode 100644
index 00000000..bcb4283d
--- /dev/null
+++ b/Runtime/Resources/CesiumForUnityStencilShadowVolume_Mat.mat.meta
@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: b9e291af1c5ae4148a2cc5760b804025
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 2100000
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: