Added Unity project files

Packages/com.vrchat.base/Editor/VRCSDK/ShaderCompilerPlugin/StripDuplicatedStereo.cs

@@ -0,0 +1,42 @@
+using System.Collections.Generic;
+using UnityEditor;
+using UnityEditor.Build;
+using UnityEditor.Rendering;
+using UnityEngine;
+using UnityEngine.Rendering;
+
+public class StripDuplicatedStereo : IPreprocessShaders
+{
+    public int callbackOrder => 1024;
+
+    private readonly ShaderKeyword _unitySinglePassStereoKeyword;
+    private readonly ShaderKeyword _stereoInstancingKeyword;
+
+    public StripDuplicatedStereo()
+    {
+        _unitySinglePassStereoKeyword = new ShaderKeyword("UNITY_SINGLE_PASS_STEREO");
+        _stereoInstancingKeyword = new ShaderKeyword("STEREO_INSTANCING_ON");
+    }
+
+    public void OnProcessShader(Shader shader, ShaderSnippetData snippet, IList<ShaderCompilerData> data)
+    {
+        for(int i = data.Count - 1; i >= 0; i--)
+        {
+            ShaderCompilerData entry = data[i];
+            if(entry.buildTarget == BuildTarget.StandaloneWindows64)
+            {
+                if(entry.shaderKeywordSet.IsEnabled(_unitySinglePassStereoKeyword) && entry.shaderKeywordSet.IsEnabled(_stereoInstancingKeyword))
+                {
+                    data.RemoveAt(i);
+                }
+            }
+            else
+            {
+                if(entry.shaderKeywordSet.IsEnabled(_unitySinglePassStereoKeyword))
+                {
+                    data.RemoveAt(i);
+                }
+            }
+        }
+    }
+}