[HDRP] Fixed taa jitter for after post process materials

com.unity.render-pipelines.high-definition/CHANGELOG.md

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixed stackLit coat screen space reflection and raytrace reflection light hierarchy and IBL fallback
 - Fixed custom pass utils Blur and Copy functions in XR.
 - Fixed SpeedTree graph compatibility by removing custom interpolators.
+- Fixed taa jitter for after post process materials (case 1380967).
 
 ## [12.1.2] - 2021-10-22
 

com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/HDRenderPipeline.PostProcess.cs

@@ -636,13 +636,27 @@ TextureHandle RenderAfterPostProcessObjects(RenderGraph renderGraph, HDCamera hd
                 builder.SetRenderFunc(
                     (AfterPostProcessPassData data, RenderGraphContext ctx) =>
                     {
+                        // Disable camera jitter. See coment in RestoreNonjitteredMatrices
+                        if (data.hdCamera.RequiresCameraJitter())
+                        {
+                            data.hdCamera.UpdateAllViewConstants(false);
+                            data.hdCamera.UpdateShaderVariablesGlobalCB(ref data.globalCB);
+                        }
+
                         UpdateOffscreenRenderingConstants(ref data.globalCB, true, 1.0f);
                         ConstantBuffer.PushGlobal(ctx.cmd, data.globalCB, HDShaderIDs._ShaderVariablesGlobal);
 
                         DrawOpaqueRendererList(ctx.renderContext, ctx.cmd, data.hdCamera.frameSettings, data.opaqueAfterPostprocessRL);
                         // Setup off-screen transparency here
                         DrawTransparentRendererList(ctx.renderContext, ctx.cmd, data.hdCamera.frameSettings, data.transparentAfterPostprocessRL);
 
+                        // Reenable camera jitter for CustomPostProcessBeforeTAA injection point
+                        if (data.hdCamera.RequiresCameraJitter())
+                        {
+                            data.hdCamera.UpdateAllViewConstants(true);
+                            data.hdCamera.UpdateShaderVariablesGlobalCB(ref data.globalCB);
+                        }
+
                         UpdateOffscreenRenderingConstants(ref data.globalCB, false, 1.0f);
                         ConstantBuffer.PushGlobal(ctx.cmd, data.globalCB, HDShaderIDs._ShaderVariablesGlobal);
                     });