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ScriptableRenderPipeline/HDRenderPipeline/HDRP/Camera/HDCamera.cs

             }
         }
 
-        // View-projection matrix from the previous frame.
+        // View-projection matrix from the previous frame (non-jittered).
         public Matrix4x4 prevViewProjMatrix;
 
         // We need to keep track of these when camera relative rendering is enabled so we can take

ScriptableRenderPipeline/HDRenderPipeline/HDRP/ShaderVariables.hlsl

 // TODO: sort these vars by the frequency of use (descending), and put commonly used vars together.
 // Note: please use UNITY_MATRIX_X macros instead of referencing matrix variables directly.
 CBUFFER_START(UnityPerPass)
-float4x4 _PrevViewProjMatrix;
+float4x4 _PrevViewProjMatrix; // non-jittered
 float4x4 _ViewProjMatrix;
 float4x4 _NonJitteredViewProjMatrix;
 float4x4 _ViewMatrix;