[HDRP] Fix custom pass buffers not bound after creation

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

@@ -416,6 +416,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixed wrong ordering in FrameSettings (Normalize Reflection Probes)
 - Fixed ThreadMapDetail to saturate AO & smoothness strength inputs to prevent out-of-bounds values set by users (1357740)
 - Allow negative wind speed parameter.
+- Fixed custom pass custom buffer not bound after being created inside a custom pass.
 
 ### Changed
 - Changed Window/Render Pipeline/HD Render Pipeline Wizard to Window/Rendering/HDRP Wizard

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

@@ -219,9 +219,6 @@ PrepassOutput RenderPrepass(RenderGraph renderGraph,
 
             using (new XRSinglePassScope(renderGraph, hdCamera))
             {
-                // Bind the custom color/depth before the first custom pass
-                BindCustomPassBuffers(renderGraph, hdCamera);
-
                 RenderCustomPass(renderGraph, hdCamera, colorBuffer, result, customPassCullingResults, cullingResults, CustomPassInjectionPoint.BeforeRendering, aovRequest, aovBuffers);
 
                 RenderRayTracingDepthPrepass(renderGraph, cullingResults, hdCamera, result.depthBuffer);

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

@@ -1850,33 +1850,6 @@ void ResetCameraSizeForAfterPostProcess(RenderGraph renderGraph, HDCamera hdCame
             }
         }
 
-        class BindCustomPassBuffersPassData
-        {
-            public Lazy<RTHandle> customColorTexture;
-            public Lazy<RTHandle> customDepthTexture;
-        }
-
-        void BindCustomPassBuffers(RenderGraph renderGraph, HDCamera hdCamera)
-        {
-            if (hdCamera.frameSettings.IsEnabled(FrameSettingsField.CustomPass))
-            {
-                using (var builder = renderGraph.AddRenderPass<BindCustomPassBuffersPassData>("Bind Custom Pass Buffers", out var passData))
-                {
-                    passData.customColorTexture = m_CustomPassColorBuffer;
-                    passData.customDepthTexture = m_CustomPassDepthBuffer;
-
-                    builder.SetRenderFunc(
-                        (BindCustomPassBuffersPassData data, RenderGraphContext ctx) =>
-                        {
-                            if (data.customColorTexture.IsValueCreated)
-                                ctx.cmd.SetGlobalTexture(HDShaderIDs._CustomColorTexture, data.customColorTexture.Value);
-                            if (data.customDepthTexture.IsValueCreated)
-                                ctx.cmd.SetGlobalTexture(HDShaderIDs._CustomDepthTexture, data.customDepthTexture.Value);
-                        });
-                }
-            }
-        }
-
 #if UNITY_EDITOR
         class RenderWireOverlayPassData
         {

com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/RenderPass/CustomPass/CustomPass.cs

@@ -234,6 +234,11 @@ internal void ExecuteInternal(RenderGraph renderGraph, HDCamera hdCamera, Cullin
                         if (customPass.currentRenderTarget.normalBufferRG.IsValid() && customPass.injectionPoint != CustomPassInjectionPoint.AfterPostProcess)
                             ctx.cmd.SetGlobalTexture(HDShaderIDs._NormalBufferTexture, customPass.currentRenderTarget.normalBufferRG);
 
+                        if (customPass.currentRenderTarget.customColorBuffer.IsValueCreated)
+                            ctx.cmd.SetGlobalTexture(HDShaderIDs._CustomColorTexture, customPass.currentRenderTarget.customColorBuffer.Value);
+                        if (customPass.currentRenderTarget.customDepthBuffer.IsValueCreated)
+                            ctx.cmd.SetGlobalTexture(HDShaderIDs._CustomDepthTexture, customPass.currentRenderTarget.customDepthBuffer.Value);
+
                         if (!customPass.isSetup)
                         {
                             customPass.Setup(ctx.renderContext, ctx.cmd);