Blit shaders modified to avoid tile depth load.

ScriptableRenderPipeline/LightweightPipeline/LWRP/LightweightPipeline.cs

             {
                 // If PostProcessing is enabled, it is already blit to CameraTarget.
                 if (!LightweightUtils.HasFlag(renderingConfig, FrameRenderingConfiguration.PostProcess))
-                    Blit(cmd, renderingConfig, BuiltinRenderTextureType.CurrentActive, BuiltinRenderTextureType.CameraTarget);
+                    Blit(cmd, renderingConfig, BuiltinRenderTextureType.CurrentActive, BuiltinRenderTextureType.CameraTarget, m_BlitMaterial);
             }
 
             SetRenderTarget(cmd, BuiltinRenderTextureType.CameraTarget);
 
         private void Blit(CommandBuffer cmd, FrameRenderingConfiguration renderingConfig, RenderTargetIdentifier sourceRT, RenderTargetIdentifier destRT, Material material = null)
         {
+            cmd.SetGlobalTexture(m_BlitTexID, sourceRT);
             if (LightweightUtils.HasFlag(renderingConfig, FrameRenderingConfiguration.DefaultViewport))
             {
                 cmd.Blit(sourceRT, destRT, material);
                 if (m_BlitQuad == null)
                     m_BlitQuad = LightweightUtils.CreateQuadMesh(false);
 
-                cmd.SetGlobalTexture(m_BlitTexID, sourceRT);
-                cmd.DrawMesh(m_BlitQuad, Matrix4x4.identity, m_BlitMaterial);
+                cmd.DrawMesh(m_BlitQuad, Matrix4x4.identity, material);
             }
         }
 

ScriptableRenderPipeline/LightweightPipeline/LWRP/Shaders/LightweightBlit.shader

         {
             Tags { "LightMode" = "LightweightForward"}
 
+            ZTest Always ZWrite Off
+
             HLSLPROGRAM
             // Required to compile gles 2.0 with standard srp library
             #pragma prefer_hlslcc gles

ScriptableRenderPipeline/LightweightPipeline/LWRP/Shaders/LightweightCopyDepth.shader

 
         Pass
         {
-            ColorMask 0
-            ZTest Always
-            ZWrite On
+            ZTest Always ZWrite Off ColorMask 0
 
             HLSLPROGRAM
             // Required to compile gles 2.0 with standard srp library