Merge pull request #1551 from Unity-Technologies/lw/platform-fixes

Lw/platform fixes

com.unity.render-pipelines.lightweight/CHANGELOG.md

 - Updated the UI for the Lighweight pipeline asset.
 
 ### Fixed
+- PS4 compiler error
+- Fixed VR multiview rendering by forcing MSAA to be off. There's a current issue in engine that breaks MSAA and Texture2DArray.
 - Fixed UnityPerDraw CB layout
 - GLCore compute buffer compiler error
 - Occlusion strength not being applied on LW standard shaders

com.unity.render-pipelines.lightweight/LWRP/LightweightPipeline.cs

             cameraData.isSceneViewCamera = camera.cameraType == CameraType.SceneView;
             cameraData.isOffscreenRender = camera.targetTexture != null && !cameraData.isSceneViewCamera;
             cameraData.isStereoEnabled = IsStereoEnabled(camera);
+
+#if !UNITY_SWITCH
+            // TODO: There's currently an issue in engine side that breaks MSAA with texture2DArray.
+            // for now we force msaa disabled when using texture2DArray. This fixes VR multiple and single pass instanced modes.
+            if (cameraData.isStereoEnabled && XRSettings.eyeTextureDesc.dimension == TextureDimension.Tex2DArray)
+                cameraData.msaaSamples = 1;
+#endif
+
             cameraData.isHdrEnabled = camera.allowHDR && pipelineAsset.supportsHDR;
 
             cameraData.postProcessLayer = camera.GetComponent<PostProcessLayer>();

com.unity.render-pipelines.lightweight/LWRP/ShaderLibrary/Terrain/InputSurfaceGrass.hlsl

     vertex.xz -= waveMove.xz * _WaveAndDistance.z;
 
     // apply color animation
-    half3 waveColor = lerp (0.5, _WavingTint.rgb, lighting);
+    half3 waveColor = lerp (real3(0.5, 0.5, 0.5), _WavingTint.rgb, lighting);
 
     // Fade the grass out before detail distance.
     // Saturate because Radeon HD drivers on OS X 10.4.10 don't saturate vertex colors properly.