Gate XR TAA for 2017.3 and newer

Camera.CopyStereoDeviceProjectionMatrixToNonJittered and Camera.GetStereoNonJitteredProjectionMatrix are only on 2017.3, so we can't really support XR TAA before that.

Also, fixed a method name typo

Author: robbiesri

PostProcessing/Runtime/Effects/TemporalAntialiasing.cs

@@ -57,6 +57,9 @@ public bool IsSupported()
         {
             return SystemInfo.supportedRenderTargetCount >= 2
                 && SystemInfo.supportsMotionVectors
+#if !UNITY_2017_3_OR_NEWER
+                && !RuntimeUtilities.isVREnabled
+#endif
                 && SystemInfo.graphicsDeviceType != GraphicsDeviceType.OpenGLES2;
         }
 
@@ -104,16 +107,17 @@ public Matrix4x4 GetJitteredProjectionMatrix(Camera camera)
             return cameraProj;
         }
 
-        public void ConfiguredJitteredProjectionMatrix(PostProcessRenderContext context)
+        public void ConfigureJitteredProjectionMatrix(PostProcessRenderContext context)
         {
             var camera = context.camera;
             camera.nonJitteredProjectionMatrix = camera.projectionMatrix;
             camera.projectionMatrix = GetJitteredProjectionMatrix(camera);
             camera.useJitteredProjectionMatrixForTransparentRendering = false;
         }
 
-        public void ConfiguredStereoJitteredProjectionMatrices(PostProcessRenderContext context)
+        public void ConfigureStereoJitteredProjectionMatrices(PostProcessRenderContext context)
         {
+#if  UNITY_2017_3_OR_NEWER
             var camera = context.camera;
             jitter = GenerateRandomOffset();
             jitter *= jitterSpread;
@@ -134,6 +138,7 @@ public void ConfiguredStereoJitteredProjectionMatrices(PostProcessRenderContext
             // which could be double-wide in certain stereo rendering scenarios
             jitter = new Vector2(jitter.x / context.singleEyeWidth, jitter.y / context.height);
             camera.useJitteredProjectionMatrixForTransparentRendering = false;
+#endif
         }
 
         private void GenerateHistoryName(RenderTexture rt, int id, PostProcessRenderContext context)

PostProcessing/Runtime/PostProcessLayer.cs

@@ -585,10 +585,10 @@ public void Render(PostProcessRenderContext context)
                     {
                         // We only need to configure all of this once for stereo, during OnPreCull
                         if (context.camera.stereoActiveEye != Camera.MonoOrStereoscopicEye.Right)
-                            temporalAntialiasing.ConfiguredStereoJitteredProjectionMatrices(context);
+                            temporalAntialiasing.ConfigureStereoJitteredProjectionMatrices(context);
                     }
                     else
-                        temporalAntialiasing.ConfiguredJitteredProjectionMatrix(context);
+                        temporalAntialiasing.ConfigureJitteredProjectionMatrix(context);
                 }
 
                 var taaTarget = m_TargetPool.Get();