Fix broken motion vectors on URP Deferred

Fix for https://jira.unity3d.com/browse/UUM-61051

This PR fixes motion vectors being broken on URP Deferred. This was apparent because _CameraDepthTexture was showing a default texture in Frame Debugger when using Deferred. Binding the texture fixes that, and the output looks correct now.

Before:

https://media.github.cds.internal.unity3d.com/user/3380/files/732ede31-e722-48b5-9fb1-ac30818468c1

After:

https://media.github.cds.internal.unity3d.com/user/3380/files/bcaa314f-6609-441d-bae2-a8b59dfbe78a

Author: arttu-peltonen

Packages/com.unity.render-pipelines.universal/Runtime/Passes/MotionVectorRenderPass.cs

@@ -16,7 +16,8 @@ sealed class MotionVectorRenderPass : ScriptableRenderPass
         public const string k_MotionVectorsLightModeTag = "MotionVectors";
         static readonly string[] s_ShaderTags = new string[] { k_MotionVectorsLightModeTag };
 
-        private static readonly ProfilingSampler s_SetMotionMatrixProfilingSampler = new ProfilingSampler("SetMotionVectorGlobalMatrices");
+        static readonly int s_CameraDepthTextureID = Shader.PropertyToID("_CameraDepthTexture");
+        static readonly ProfilingSampler s_SetMotionMatrixProfilingSampler = new ProfilingSampler("SetMotionVectorGlobalMatrices");
 
         RTHandle m_Color;
         RTHandle m_Depth;
@@ -239,6 +240,9 @@ internal void Render(RenderGraph renderGraph, ContextContainer frameData, Textur
 
                 builder.SetRenderFunc((PassData data, RasterGraphContext context) =>
                 {
+                    if (data.cameraMaterial != null)
+                        data.cameraMaterial.SetTexture(s_CameraDepthTextureID, data.cameraDepth);
+
                     ExecutePass(context.cmd, data, data.rendererListHdl);
                 });
             }

Tests/SRPTests/Projects/UniversalGraphicsTest_Foundation/Assets/CommonAssets/URPAssets/DefaultURPAsset.asset

@@ -43,6 +43,7 @@ MonoBehaviour:
   - {fileID: 11400000, guid: 708aca6b4b64e8f41946dabb10fe1586, type: 2}
   - {fileID: 11400000, guid: 32bad5b5f60f85349bb6751a615e4571, type: 2}
   - {fileID: 11400000, guid: c24cfbcb0b49eb642b5173d4d3478f4d, type: 2}
+  - {fileID: 11400000, guid: 81afd9c2ea9393c4589e79894b0c709b, type: 2}
   m_DefaultRendererIndex: 0
   m_RequireDepthTexture: 1
   m_RequireOpaqueTexture: 1
@@ -103,11 +104,11 @@ MonoBehaviour:
   m_UseAdaptivePerformance: 1
   m_ColorGradingMode: 0
   m_ColorGradingLutSize: 32
+  m_AllowPostProcessAlphaOutput: 0
   m_UseFastSRGBLinearConversion: 0
   m_SupportDataDrivenLensFlare: 0
   m_SupportScreenSpaceLensFlare: 0
   m_GPUResidentDrawerMode: 0
-  m_UseLegacyLightmaps: 0
   m_SmallMeshScreenPercentage: 0
   m_GPUResidentDrawerEnableOcclusionCullingInCameras: 0
   m_ShadowType: 0
@@ -134,6 +135,7 @@ MonoBehaviour:
   m_PrefilterDebugKeywords: 1
   m_PrefilterWriteRenderingLayers: 1
   m_PrefilterHDROutput: 1
+  m_PrefilterAlphaOutput: 0
   m_PrefilterSSAODepthNormals: 1
   m_PrefilterSSAOSourceDepthLow: 1
   m_PrefilterSSAOSourceDepthMedium: 1

Tests/SRPTests/Projects/UniversalGraphicsTest_Foundation/Assets/Scenes/206_Motion_Vectors/MotionVectorRenderer_Deferred.asset

@@ -0,0 +1,77 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!114 &11400000
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 0}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: de640fe3d0db1804a85f9fc8f5cadab6, type: 3}
+  m_Name: MotionVectorRenderer_Deferred
+  m_EditorClassIdentifier: 
+  debugShaders:
+    debugReplacementPS: {fileID: 4800000, guid: cf852408f2e174538bcd9b7fda1c5ae7,
+      type: 3}
+    hdrDebugViewPS: {fileID: 4800000, guid: 573620ae32aec764abd4d728906d2587, type: 3}
+    probeVolumeSamplingDebugComputeShader: {fileID: 7200000, guid: 53626a513ea68ce47b59dc1299fe3959,
+      type: 3}
+  probeVolumeResources:
+    probeVolumeDebugShader: {fileID: 4800000, guid: e5c6678ed2aaa91408dd3df699057aae,
+      type: 3}
+    probeVolumeFragmentationDebugShader: {fileID: 4800000, guid: 03cfc4915c15d504a9ed85ecc404e607,
+      type: 3}
+    probeVolumeOffsetDebugShader: {fileID: 4800000, guid: 53a11f4ebaebf4049b3638ef78dc9664,
+      type: 3}
+    probeVolumeSamplingDebugShader: {fileID: 4800000, guid: 8f96cd657dc40064aa21efcc7e50a2e7,
+      type: 3}
+    probeSamplingDebugMesh: {fileID: -3555484719484374845, guid: 57d7c4c16e2765b47a4d2069b311bffe,
+      type: 3}
+    probeSamplingDebugTexture: {fileID: 2800000, guid: 24ec0e140fb444a44ab96ee80844e18e,
+      type: 3}
+    probeVolumeBlendStatesCS: {fileID: 0}
+  m_RendererFeatures:
+  - {fileID: 7182410664851599670}
+  m_RendererFeatureMap: 36f17415720cad63
+  m_UseNativeRenderPass: 0
+  xrSystemData: {fileID: 11400000, guid: 60e1133243b97e347b653163a8c01b64, type: 2}
+  postProcessData: {fileID: 0}
+  m_AssetVersion: 2
+  m_OpaqueLayerMask:
+    serializedVersion: 2
+    m_Bits: 4294967295
+  m_TransparentLayerMask:
+    serializedVersion: 2
+    m_Bits: 4294967295
+  m_DefaultStencilState:
+    overrideStencilState: 0
+    stencilReference: 0
+    stencilCompareFunction: 8
+    passOperation: 2
+    failOperation: 0
+    zFailOperation: 0
+  m_ShadowTransparentReceive: 1
+  m_RenderingMode: 1
+  m_DepthPrimingMode: 0
+  m_CopyDepthMode: 0
+  m_DepthAttachmentFormat: 0
+  m_DepthTextureFormat: 0
+  m_AccurateGbufferNormals: 0
+  m_IntermediateTextureMode: 1
+--- !u!114 &7182410664851599670
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 0}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 71942f416c7166748bc5eca0666d2ccc, type: 3}
+  m_Name: NewCaptureMotionVectorsRendererFeature
+  m_EditorClassIdentifier: 
+  m_Active: 1
+  m_Shader: {fileID: 4800000, guid: 8472b56af86da7b409c2cc4ed12aa711, type: 3}
+  m_Intensity: 50