Added depth slice to SetRenderTarget SRP api.

ScriptableRenderPipeline/Core/CoreUtils.cs

         public static Color clearColorAllBlack { get { return new Color(0f, 0f, 0f, 0f); } }
 
         // Render Target Management.
-        public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier buffer, ClearFlag clearFlag, Color clearColor, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown)
+        public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier buffer, ClearFlag clearFlag, Color clearColor, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown, int depthSlice = 0)
-            cmd.SetRenderTarget(buffer, miplevel, cubemapFace);
+            cmd.SetRenderTarget(buffer, miplevel, cubemapFace, depthSlice);
-        public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier buffer, ClearFlag clearFlag = ClearFlag.None, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown)
+        public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier buffer, ClearFlag clearFlag = ClearFlag.None, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown, int depthSlice = 0)
-            SetRenderTarget(cmd, buffer, clearFlag, clearColorAllBlack, miplevel, cubemapFace);
+            SetRenderTarget(cmd, buffer, clearFlag, clearColorAllBlack, miplevel, cubemapFace, depthSlice);
-        public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier colorBuffer, RenderTargetIdentifier depthBuffer, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown)
+        public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier colorBuffer, RenderTargetIdentifier depthBuffer, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown, int depthSlice = 0)
-            SetRenderTarget(cmd, colorBuffer, depthBuffer, ClearFlag.None, clearColorAllBlack, miplevel, cubemapFace);
+            SetRenderTarget(cmd, colorBuffer, depthBuffer, ClearFlag.None, clearColorAllBlack, miplevel, cubemapFace, depthSlice);
-        public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier colorBuffer, RenderTargetIdentifier depthBuffer, ClearFlag clearFlag, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown)
+        public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier colorBuffer, RenderTargetIdentifier depthBuffer, ClearFlag clearFlag, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown, int depthSlice = 0)
-            SetRenderTarget(cmd, colorBuffer, depthBuffer, clearFlag, clearColorAllBlack, miplevel, cubemapFace);
+            SetRenderTarget(cmd, colorBuffer, depthBuffer, clearFlag, clearColorAllBlack, miplevel, cubemapFace, depthSlice);
-        public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier colorBuffer, RenderTargetIdentifier depthBuffer, ClearFlag clearFlag, Color clearColor, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown)
+        public static void SetRenderTarget(CommandBuffer cmd, RenderTargetIdentifier colorBuffer, RenderTargetIdentifier depthBuffer, ClearFlag clearFlag, Color clearColor, int miplevel = 0, CubemapFace cubemapFace = CubemapFace.Unknown, int depthSlice = 0)
         {
             cmd.SetRenderTarget(colorBuffer, depthBuffer, miplevel, cubemapFace);