[HDRP] Fixed taa jitter for after post process materials (#6320)

* [HDRP] Fixed taa jitter for after post process materials

* Remove UpdateShaderVariablesGlobalCB

* Only do it if camera has jittering

* Update screenshots

Co-authored-by: sebastienlagarde <sebastien@unity3d.com>

Author: adrien-de-tocqueville

TestProjects/HDRP_Tests/Assets/ReferenceImages/Linear/LinuxEditor/Vulkan/None/4061_CustomPostProcessMotionVectors.png

@@ -44,6 +44,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixed Nans happening due to volumetric clouds when the pixel color is perfectly black (case 1379185).
 - Fixed for screen space overlay rendered by camera when HDR is disabled.
 - Fixed dirtiness handling in path tracing, when using multiple cameras at once (case 1376940).
+- Fixed taa jitter for after post process materials (case 1380967).
 
 ### Changed
 - Optimizations for the physically based depth of field.

TestProjects/HDRP_Tests/Assets/ReferenceImages/Linear/OSXEditor/Metal/None/4061_CustomPostProcessMotionVectors.png

@@ -953,13 +953,27 @@ 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);
                     });