Motion vector support for Custom post processing effects

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

@@ -72,6 +72,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Added a dialog box when you import a Material that has a diffusion profile to add the diffusion profile to global settings.
 - Added support for Unlit shadow mattes in Path Tracing (case 1335487).
 - Added a shortcut to HDRP Wizard documentation.
+- Added support of motion vector buffer in custom postprocess
 
 ### Fixed
 - Fixed Intensity Multiplier not affecting realtime global illumination.

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

@@ -474,7 +474,7 @@ TextureHandle RenderPostProcess(RenderGraph     renderGraph,
                     SetCurrentResolutionGroup(renderGraph, hdCamera, ResolutionGroup.AfterDynamicResUpscale);
                 }
 
-                source = CustomPostProcessPass(renderGraph, hdCamera, source, depthBuffer, normalBuffer, m_GlobalSettings.beforeTAACustomPostProcesses, HDProfileId.CustomPostProcessBeforeTAA);
+                source = CustomPostProcessPass(renderGraph, hdCamera, source, depthBuffer, normalBuffer, motionVectors, m_GlobalSettings.beforeTAACustomPostProcesses, HDProfileId.CustomPostProcessBeforeTAA);
 
                 // Temporal anti-aliasing goes first
                 if (m_AntialiasingFS)
@@ -489,7 +489,7 @@ TextureHandle RenderPostProcess(RenderGraph     renderGraph,
                     }
                 }
 
-                source = CustomPostProcessPass(renderGraph, hdCamera, source, depthBuffer, normalBuffer, m_GlobalSettings.beforePostProcessCustomPostProcesses, HDProfileId.CustomPostProcessBeforePP);
+                source = CustomPostProcessPass(renderGraph, hdCamera, source, depthBuffer, normalBuffer, motionVectors, m_GlobalSettings.beforePostProcessCustomPostProcesses, HDProfileId.CustomPostProcessBeforePP);
 
                 source = DepthOfFieldPass(renderGraph, hdCamera, depthBuffer, motionVectors, depthBufferMipChain, source);
 
@@ -508,7 +508,7 @@ TextureHandle RenderPostProcess(RenderGraph     renderGraph,
                 source = UberPass(renderGraph, hdCamera, logLutOutput, bloomTexture, source);
                 PushFullScreenDebugTexture(renderGraph, source, hdCamera.postProcessRTScales, FullScreenDebugMode.ColorLog);
 
-                source = CustomPostProcessPass(renderGraph, hdCamera, source, depthBuffer, normalBuffer, m_GlobalSettings.afterPostProcessCustomPostProcesses, HDProfileId.CustomPostProcessAfterPP);
+                source = CustomPostProcessPass(renderGraph, hdCamera, source, depthBuffer, normalBuffer, motionVectors, m_GlobalSettings.afterPostProcessCustomPostProcesses, HDProfileId.CustomPostProcessAfterPP);
 
                 source = LensFlareDataDrivenPass(renderGraph, hdCamera, source);
 
@@ -1251,15 +1251,15 @@ TextureHandle DynamicExposurePass(RenderGraph renderGraph, HDCamera hdCamera, Te
         #endregion
 
         #region Custom Post Process
-        void DoUserAfterOpaqueAndSky(RenderGraph renderGraph, HDCamera hdCamera, TextureHandle colorBuffer, TextureHandle depthBuffer, TextureHandle normalBuffer)
+        void DoUserAfterOpaqueAndSky(RenderGraph renderGraph, HDCamera hdCamera, TextureHandle colorBuffer, TextureHandle depthBuffer, TextureHandle normalBuffer, TextureHandle motionVectors)
         {
             if (!hdCamera.frameSettings.IsEnabled(FrameSettingsField.CustomPostProcess))
                 return;
 
             using (new RenderGraphProfilingScope(renderGraph, ProfilingSampler.Get(HDProfileId.CustomPostProcessAfterOpaqueAndSky)))
             {
                 TextureHandle source = colorBuffer;
-                bool needBlitToColorBuffer = DoCustomPostProcess(renderGraph, hdCamera, ref source, depthBuffer, normalBuffer, m_GlobalSettings.beforeTransparentCustomPostProcesses);
+                bool needBlitToColorBuffer = DoCustomPostProcess(renderGraph, hdCamera, ref source, depthBuffer, normalBuffer, motionVectors, m_GlobalSettings.beforeTransparentCustomPostProcesses);
 
                 if (needBlitToColorBuffer)
                 {
@@ -1274,11 +1274,12 @@ class CustomPostProcessData
             public TextureHandle destination;
             public TextureHandle depthBuffer;
             public TextureHandle normalBuffer;
+            public TextureHandle motionVecTexture;
             public HDCamera hdCamera;
             public CustomPostProcessVolumeComponent customPostProcess;
         }
 
-        bool DoCustomPostProcess(RenderGraph renderGraph, HDCamera hdCamera, ref TextureHandle source, TextureHandle depthBuffer, TextureHandle normalBuffer, List<string> postProcessList)
+        bool DoCustomPostProcess(RenderGraph renderGraph, HDCamera hdCamera, ref TextureHandle source, TextureHandle depthBuffer, TextureHandle normalBuffer, TextureHandle motionVectors, List<string> postProcessList)
         {
             bool customPostProcessExecuted = false;
             foreach (var typeString in postProcessList)
@@ -1305,6 +1306,7 @@ bool DoCustomPostProcess(RenderGraph renderGraph, HDCamera hdCamera, ref Texture
                                 // Until we can upgrade CustomPP to be full render graph, we'll always read and bind them globally.
                                 passData.depthBuffer = builder.ReadTexture(depthBuffer);
                                 passData.normalBuffer = builder.ReadTexture(normalBuffer);
+                                passData.motionVecTexture = builder.ReadTexture(motionVectors);
 
                                 passData.source = builder.ReadTexture(source);
                                 passData.destination = builder.UseColorBuffer(renderGraph.CreateTexture(new TextureDesc(Vector2.one, true, true)
@@ -1317,6 +1319,7 @@ bool DoCustomPostProcess(RenderGraph renderGraph, HDCamera hdCamera, ref Texture
                                         // Temporary: see comment above
                                         ctx.cmd.SetGlobalTexture(HDShaderIDs._CameraDepthTexture, data.depthBuffer);
                                         ctx.cmd.SetGlobalTexture(HDShaderIDs._NormalBufferTexture, data.normalBuffer);
+                                        ctx.cmd.SetGlobalTexture(HDShaderIDs._CameraMotionVectorsTexture, data.motionVecTexture);
 
                                         data.customPostProcess.Render(ctx.cmd, data.hdCamera, data.source, data.destination);
                                     });
@@ -1332,14 +1335,14 @@ bool DoCustomPostProcess(RenderGraph renderGraph, HDCamera hdCamera, ref Texture
             return customPostProcessExecuted;
         }
 
-        TextureHandle CustomPostProcessPass(RenderGraph renderGraph, HDCamera hdCamera, TextureHandle source, TextureHandle depthBuffer, TextureHandle normalBuffer, List<string> postProcessList, HDProfileId profileId)
+        TextureHandle CustomPostProcessPass(RenderGraph renderGraph, HDCamera hdCamera, TextureHandle source, TextureHandle depthBuffer, TextureHandle normalBuffer, TextureHandle motionVectors, List<string> postProcessList, HDProfileId profileId)
         {
             if (!hdCamera.frameSettings.IsEnabled(FrameSettingsField.CustomPostProcess))
                 return source;
 
             using (new RenderGraphProfilingScope(renderGraph, ProfilingSampler.Get(profileId)))
             {
-                DoCustomPostProcess(renderGraph, hdCamera, ref source, depthBuffer, normalBuffer, postProcessList);
+                DoCustomPostProcess(renderGraph, hdCamera, ref source, depthBuffer, normalBuffer, motionVectors, postProcessList);
             }
 
             return source;

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

@@ -181,7 +181,7 @@ void RecordRenderGraph(RenderRequest renderRequest,
                     // Send all the geometry graphics buffer to client systems if required (must be done after the pyramid and before the transparent depth pre-pass)
                     SendGeometryGraphicsBuffers(m_RenderGraph, prepassOutput.normalBuffer, prepassOutput.depthPyramidTexture, hdCamera);
 
-                    DoUserAfterOpaqueAndSky(m_RenderGraph, hdCamera, colorBuffer, prepassOutput.resolvedDepthBuffer, prepassOutput.resolvedNormalBuffer);
+                    DoUserAfterOpaqueAndSky(m_RenderGraph, hdCamera, colorBuffer, prepassOutput.resolvedDepthBuffer, prepassOutput.resolvedNormalBuffer, prepassOutput.resolvedMotionVectorsBuffer);
 
                     // No need for old stencil values here since from transparent on different features are tagged
                     ClearStencilBuffer(m_RenderGraph, hdCamera, prepassOutput.depthBuffer);