Fix issue with MultiScaleVO and Single Pass Stereo

Fixes an issue with MultiScaleVO showing incorrectly if XR and single pass stereo is enabled for a project, but the current camera not actually doing stereo rendering, like the scene view or when the HMD isn't active, or for "social" camera views.

Author: bgolus

PostProcessing/Runtime/Effects/MultiScaleVO.cs

@@ -145,8 +145,10 @@ Vector3 GetSizeArray(MipLevel mip)
 
         public void GenerateAOMap(CommandBuffer cmd, Camera camera, RenderTargetIdentifier destination, RenderTargetIdentifier? depthMap, bool invert, bool isMSAA)
         {
+            bool isSinglePassStereo = camera.stereoEnabled && RuntimeUtilities.isSinglePassStereoEnabled;
+
             // Base size
-            m_Widths[0] = camera.pixelWidth * (RuntimeUtilities.isSinglePassStereoEnabled ? 2 : 1);
+            m_Widths[0] = camera.pixelWidth * (isSinglePassStereo ? 2 : 1);
             m_Heights[0] = camera.pixelHeight;
 
             // L1 -> L6 sizes
@@ -163,11 +165,12 @@ public void GenerateAOMap(CommandBuffer cmd, Camera camera, RenderTargetIdentifi
             // Render logic
             PushDownsampleCommands(cmd, camera, depthMap, isMSAA);
 
+
             float tanHalfFovH = CalculateTanHalfFovHeight(camera);
-            PushRenderCommands(cmd, ShaderIDs.TiledDepth1, ShaderIDs.Occlusion1, GetSizeArray(MipLevel.L3), tanHalfFovH, isMSAA);
-            PushRenderCommands(cmd, ShaderIDs.TiledDepth2, ShaderIDs.Occlusion2, GetSizeArray(MipLevel.L4), tanHalfFovH, isMSAA);
-            PushRenderCommands(cmd, ShaderIDs.TiledDepth3, ShaderIDs.Occlusion3, GetSizeArray(MipLevel.L5), tanHalfFovH, isMSAA);
-            PushRenderCommands(cmd, ShaderIDs.TiledDepth4, ShaderIDs.Occlusion4, GetSizeArray(MipLevel.L6), tanHalfFovH, isMSAA);
+            PushRenderCommands(cmd, ShaderIDs.TiledDepth1, ShaderIDs.Occlusion1, GetSizeArray(MipLevel.L3), tanHalfFovH, isMSAA, isSinglePassStereo);
+            PushRenderCommands(cmd, ShaderIDs.TiledDepth2, ShaderIDs.Occlusion2, GetSizeArray(MipLevel.L4), tanHalfFovH, isMSAA, isSinglePassStereo);
+            PushRenderCommands(cmd, ShaderIDs.TiledDepth3, ShaderIDs.Occlusion3, GetSizeArray(MipLevel.L5), tanHalfFovH, isMSAA, isSinglePassStereo);
+            PushRenderCommands(cmd, ShaderIDs.TiledDepth4, ShaderIDs.Occlusion4, GetSizeArray(MipLevel.L6), tanHalfFovH, isMSAA, isSinglePassStereo);
 
             PushUpsampleCommands(cmd, ShaderIDs.LowDepth4, ShaderIDs.Occlusion4, ShaderIDs.LowDepth3,   ShaderIDs.Occlusion3, ShaderIDs.Combined3, GetSize(MipLevel.L4), GetSize(MipLevel.L3), isMSAA);
             PushUpsampleCommands(cmd, ShaderIDs.LowDepth3, ShaderIDs.Combined3,  ShaderIDs.LowDepth2,   ShaderIDs.Occlusion2, ShaderIDs.Combined2, GetSize(MipLevel.L3), GetSize(MipLevel.L2), isMSAA);
@@ -284,7 +287,7 @@ void PushDownsampleCommands(CommandBuffer cmd, Camera camera, RenderTargetIdenti
             cmd.DispatchCompute(cs, kernel, m_Widths[(int)MipLevel.L6], m_Heights[(int)MipLevel.L6], 1);
         }
 
-        void PushRenderCommands(CommandBuffer cmd, int source, int destination, Vector3 sourceSize, float tanHalfFovH, bool isMSAA)
+        void PushRenderCommands(CommandBuffer cmd, int source, int destination, Vector3 sourceSize, float tanHalfFovH, bool isMSAA, bool isSinglePassStereo)
         {
             // Here we compute multipliers that convert the center depth value into (the reciprocal
             // of) sphere thicknesses at each sample location. This assumes a maximum sample radius
@@ -303,7 +306,7 @@ void PushRenderCommands(CommandBuffer cmd, int source, int destination, Vector3
             // ScreenspaceDiameter: Diameter of sample sphere in pixel units
             // ScreenspaceDiameter / BufferWidth: Ratio of the screen width that the sphere actually covers
             float thicknessMultiplier = 2f * tanHalfFovH * kScreenspaceDiameter / sourceSize.x;
-            if (RuntimeUtilities.isSinglePassStereoEnabled)
+            if (isSinglePassStereo)
                 thicknessMultiplier *= 2f;
 
             // This will transform a depth value from [0, thickness] to [0, 1].