Added stereo rendering support to CopyDepth shaders.

ScriptableRenderPipeline/LightweightPipeline/LWRP/ShaderLibrary/DepthCopy.hlsl

 {
     float4 vertex   : POSITION;
     float2 uv       : TEXCOORD0;
+    UNITY_VERTEX_INPUT_INSTANCE_ID
 };
 
 struct VertexOutput
+    UNITY_VERTEX_INPUT_INSTANCE_ID
+    UNITY_VERTEX_OUTPUT_STEREO
+    UNITY_SETUP_INSTANCE_ID(i);
+    UNITY_TRANSFER_INSTANCE_ID(i, o);
+    UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
-#if MSAA_DEPTH
-    Texture2DMS<float> _CameraDepthTexture;
+#if defined(UNITY_STEREO_INSTANCING_ENABLED) || defined(UNITY_STEREO_MULTIVIEW_ENABLED)
+#define USE_ARRAY_TEXTURE 1
+#endif
+
+#ifdef MSAA_DEPTH
+    #ifdef USE_ARRAY_TEXTURE
+        Texture2DMSArray<float> _CameraDepthTexture;
+    #else
+        Texture2DMS<float> _CameraDepthTexture;
+    #endif
-    TEXTURE2D(_CameraDepthTexture);
+    #ifdef USE_ARRAY_TEXTURE
+        TEXTURE2D_ARRAY(_CameraDepthTexture);
+    #else
+        TEXTURE2D(_CameraDepthTexture);
+    #endif
-#if MSAA_DEPTH
+#ifdef MSAA_DEPTH
     int2 coord = int2(uv * _CameraDepthTexture_TexelSize.zw);
     int samples = (int)_SampleCount;
     #if UNITY_REVERSED_Z
     #endif
 
     for (int i = 0; i < samples; ++i)
-        outDepth = DEPTH_OP(LOAD_TEXTURE2D_MSAA(_CameraDepthTexture, coord, i), outDepth);
+        #ifdef USE_ARRAY_TEXTURE
+            outDepth = DEPTH_OP(LOAD_TEXTURE2D_ARRAY_MSAA(_CameraDepthTexture, uv, unity_StereoEyeIndex, i), outDepth);
+        #else
+            outDepth = DEPTH_OP(LOAD_TEXTURE2D_MSAA(_CameraDepthTexture, uv, i), outDepth);
+        #endif
-    return SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, sampler_CameraDepthTexture, uv);
+    #ifdef USE_ARRAY_TEXTURE
+        return SAMPLE_TEXTURE2D_ARRAY(_CameraDepthTexture, sampler_CameraDepthTexture, uv, unity_StereoEyeIndex).r;
+    #else
+        return SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, sampler_CameraDepthTexture, uv);
+    #endif
+}
+
+float frag(VertexOutput i) : SV_Depth
+{
+    UNITY_SETUP_INSTANCE_ID(i);
+    return SampleDepth(i.uv);
 }
 
 #endif // LIGHTWEIGHT_DEPTH_COPY_INCLUDED

ScriptableRenderPipeline/LightweightPipeline/LWRP/Shaders/LightweightCopyDepth.shader

 
             #include "LWRP/ShaderLibrary/DepthCopy.hlsl"
 
-            float frag(VertexOutput i) : SV_Depth
-            {
-                return SampleDepth(i.uv);
-            }
             ENDHLSL
         }
     }

ScriptableRenderPipeline/LightweightPipeline/LWRP/Shaders/LightweightCopyDepthMSAA.shader

 
     SubShader
     {
-        Tags { "RenderType" = "Opaque" "RenderPipeline" = "LightiweightPipeline"}
+        Tags { "RenderType" = "Opaque" "RenderPipeline" = "LightweightPipeline"}
 
         Pass
         {
 
             #include "LWRP/ShaderLibrary/DepthCopy.hlsl"
 
-            float frag(VertexOutput i) : SV_Depth
-            {
-                return SampleDepth(i.uv);
-            }
             ENDHLSL
         }
     }