Imported changes from Oculus-VR:Unity-Graphics:6000.0/17.0.4-subpass

Author: Torgo13

Packages/com.unity.render-pipelines.core/Runtime/RenderGraph/Compiler/CompilerContextData.cs

@@ -154,6 +154,26 @@ public ref ResourceReaderData ResourceReader(in ResourceHandle h, int i)
         // Data per native renderpas
         public NativeList<NativePassData> nativePassData;
         public NativeList<SubPassDescriptor> nativeSubPassData; //Tighty packed list of per nrp subpasses
+        
+        public bool passMerged(int passId1, int passId2)
+        {
+            return passData[passId1].nativePassIndex == passData[passId2].nativePassIndex;
+        }
+
+        public bool nativepassFragmentsContain(int passId, int fragIndex)
+        {
+            int nativePassId = passData[passId].nativePassIndex;
+            if (nativePassId <= nativePassData.Length)
+            {
+                NativePassData data = nativePassData[nativePassId];
+                for (int i = 0; i < data.fragments.size; i++)
+                {
+                    if (data.fragments[i].resource.index == fragIndex)
+                        return true;
+                }
+            }
+            return false;
+        }
 
         // resources can be added as fragment both as input and output so make sure not to add them twice (return true upon new addition)
         public bool TryAddToFragmentList(in TextureAccess access, int listFirstIndex, int numItems, out string errorMessage)

Packages/com.unity.render-pipelines.core/Runtime/RenderGraph/Compiler/NativePassCompiler.cs

@@ -2022,6 +2022,13 @@ public void ExecuteGraph(InternalRenderGraphContext rgContext, RenderGraphResour
                             ExecuteBeginRenderPass(rgContext, resources, ref nativePass);
                             nrpBegan = true;
                             inRenderPass = true;
+                            
+                            for (int subpassIndex = nativePass.firstGraphPass; subpassIndex <= nativePass.lastGraphPass; subpassIndex++)
+                            {
+                                ref var subpassData = ref contextData.passData.ElementAt(subpassIndex);
+                                rgContext.executingPass = passes[subpassData.passId];
+                                passes[subpassData.passId].PreExecute(rgContext);
+                            }
                         }
                     }
                 }

Packages/com.unity.render-pipelines.core/Runtime/RenderGraph/IRenderGraphBuilder.cs

@@ -273,6 +273,15 @@ void SetRenderAttachmentDepth(TextureHandle tex, AccessFlags flags = AccessFlags
         /// <param name="flags">How this pass will access the buffer. Default value is set to AccessFlag.Read.</param>
         /// <returns>The value passed to 'input'. You should not use the returned value it will be removed in the future.</returns>
         BufferHandle UseBufferRandomAccess(BufferHandle tex, int index, bool preserveCounterValue, AccessFlags flags = AccessFlags.Read);
+        
+        /// <summary>
+        /// Specify the pre-render function to use for this pass.
+        /// The call happens when a native render pass starts
+        /// </summary>
+        /// <typeparam name="PassData">The Type of the class that provides data to the Render Pass.</typeparam>
+        /// <param name="renderFunc">Render function for the pass.</param>
+        public void SetPreRenderFunc<PassData>(BaseRenderFunc<PassData, RasterGraphContext> preRenderFunc)
+            where PassData : class, new();
     }
 
     /// <summary>

Packages/com.unity.render-pipelines.core/Runtime/RenderGraph/RenderGraph.Compiler.cs

@@ -40,5 +40,10 @@ void ExecuteNativeRenderGraph()
                 nativeCompiler.ExecuteGraph(m_RenderGraphContext, m_Resources, m_RenderPasses);
             }
         }
+        
+        public bool IsPassUsingRenderTarget(int passId, int resourceId)
+        {
+            return nativeCompiler.contextData.nativepassFragmentsContain(passId, resourceId);
+        }
     }
 }

Packages/com.unity.render-pipelines.core/Runtime/RenderGraph/RenderGraph.cs

@@ -209,6 +209,10 @@ public void FromInternalContext(InternalRenderGraphContext context)
             rastercmd.m_ExecutingPass = context.executingPass;
             cmd = rastercmd;
         }
+        
+        public int CurrentRGPassId() {
+            return cmd.m_ExecutingPass.index;
+        }
 
         /// <inheritdoc />
         public readonly TextureUVOrigin GetTextureUVOrigin(in TextureHandle textureHandle)

Packages/com.unity.render-pipelines.core/Runtime/RenderGraph/RenderGraphBuilders.cs

@@ -350,7 +350,7 @@ public void SetGlobalTextureAfterPass(in TextureHandle input, int propertyId)
 
         // Shared validation between SetRenderAttachment/SetRenderAttachmentDepth
         [Conditional("DEVELOPMENT_BUILD"), Conditional("UNITY_EDITOR")]
-        private void CheckUseFragment(in TextureHandle tex, bool isDepth)
+        private void CheckUseFragment(in TextureHandle tex, bool isDepth, bool ignoreReadTextureCheck = false)
         {
             if (RenderGraph.enableValidityChecks)
             {
@@ -362,12 +362,15 @@ private void CheckUseFragment(in TextureHandle tex, bool isDepth)
                 // SetRenderAttachment()
                 // UseTexture(grab)
                 // will work but not the other way around
-                for (int i = 0; i < m_RenderPass.resourceReadLists[tex.handle.iType].Count; i++)
+                if (!ignoreReadTextureCheck)
                 {
-                    if (m_RenderPass.resourceReadLists[tex.handle.iType][i].index == tex.handle.index)
+                    for (int i = 0; i < m_RenderPass.resourceReadLists[tex.handle.iType].Count; i++)
                     {
-                        alreadyUsed = true;
-                        break;
+                        if (m_RenderPass.resourceReadLists[tex.handle.iType][i].index == tex.handle.index)
+                        {
+                            alreadyUsed = true;
+                            break;
+                        }
                     }
                 }
 
@@ -478,7 +481,12 @@ public void SetInputAttachment(TextureHandle tex, int index, AccessFlags flags,
         {
             CheckFrameBufferFetchEmulationIsSupported(tex);
 
-            CheckUseFragment(tex, false);
+            // Depth texture can be bind as input attachment, bypass the depth format check inside CheckUseFragment
+            m_Resources.GetRenderTargetInfo(tex.handle, out var info);
+            bool isDepth = GraphicsFormatUtility.IsDepthFormat(info.format);
+            // Bypass the already used check for texture read, so that an attachment can be used as depth and input in one subpass
+            bool ignoreReadTextureCheck = true;
+            CheckUseFragment(tex, isDepth, ignoreReadTextureCheck);
             var versionedTextureHandle = new TextureHandle(UseResource(tex.handle, flags));
             m_RenderPass.SetFragmentInputRaw(versionedTextureHandle, index, flags, mipLevel, depthSlice);
         }
@@ -518,6 +526,11 @@ public BufferHandle UseBufferRandomAccess(BufferHandle input, int index, bool pr
             m_RenderPass.SetRandomWriteResourceRaw(h.handle, index, preserveCounterValue, flags);
             return input;
         }
+        
+        public void SetPreRenderFunc<PassData>(BaseRenderFunc<PassData, RasterGraphContext> preRenderFunc) where PassData : class, new()
+        {
+            ((RasterRenderGraphPass<PassData>)m_RenderPass).preRenderFunc = preRenderFunc;
+        }
 
         public void SetRenderFunc<PassData>(BaseRenderFunc<PassData, ComputeGraphContext> renderFunc) where PassData : class, new()
         {

Packages/com.unity.render-pipelines.core/Runtime/RenderGraph/RenderGraphPass.cs

@@ -8,6 +8,7 @@ namespace UnityEngine.Rendering.RenderGraphModule
     [DebuggerDisplay("RenderPass: {name} (Index:{index} Async:{enableAsyncCompute})")]
     abstract class RenderGraphPass
     {
+        public virtual void PreExecute(InternalRenderGraphContext renderGraphContext) { return; }
         public abstract void Execute(InternalRenderGraphContext renderGraphContext);
         public abstract void Release(RenderGraphObjectPool pool);
         public abstract bool HasRenderFunc();
@@ -701,6 +702,18 @@ internal sealed class RasterRenderGraphPass<PassData> : BaseRenderGraphPass<Pass
     where PassData : class, new()
     {
         internal static RasterGraphContext c = new RasterGraphContext();
+        internal BaseRenderFunc<PassData, RasterGraphContext> preRenderFunc;
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        public override void PreExecute(InternalRenderGraphContext renderGraphContext)
+        {
+            if (preRenderFunc != null)
+            {
+                RasterGraphContext temp_c = new RasterGraphContext();
+                temp_c.FromInternalContext(renderGraphContext);
+                preRenderFunc(data, temp_c);
+            }
+        }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public override void Execute(InternalRenderGraphContext renderGraphContext)

Packages/com.unity.render-pipelines.core/Runtime/RenderGraph/RenderGraphResourceTexture.cs

@@ -217,6 +217,8 @@ internal TextureHandle(int handle, bool shared = false, bool builtin = false)
         /// <param name="renderGraph">The rendergraph instance that was used to create the texture on. Texture handles are a lightweight object, all information is stored on the RenderGraph itself.</param>
         /// <returns>The texture descriptor for the given texture handle.</returns>
         public TextureDesc GetDescriptor(RenderGraph renderGraph) { return renderGraph.GetTextureDesc(this); }
+        
+        public int GetResourceId() { return handle.index; }
     }
 
     /// <summary>

Packages/com.unity.render-pipelines.core/Runtime/XR/XRSystem.cs

@@ -538,6 +538,7 @@ private static RenderTextureDescriptor XrRenderTextureDescToUnityRenderTextureDe
             rtDesc.volumeDepth  = xrDesc.volumeDepth;
             rtDesc.vrUsage      = xrDesc.vrUsage;
             rtDesc.sRGB         = xrDesc.sRGB;
+            rtDesc.msaaSamples  = xrDesc.msaaSamples;
             rtDesc.shadowSamplingMode = xrDesc.shadowSamplingMode;
             return rtDesc;
         }

Packages/com.unity.render-pipelines.universal/Editor/RendererFeatures/RenderObjectsPassFeatureEditor.cs

@@ -52,6 +52,7 @@ internal class Styles
             public static GUIContent overrideDepth = new GUIContent("Depth", "Select this option to specify how this Renderer Feature affects or uses the values in the Depth buffer.");
             public static GUIContent writeDepth = new GUIContent("Write Depth", "Choose to write depth to the screen.");
             public static GUIContent depthState = new GUIContent("Depth Test", "Choose a new depth test function.");
+            public static GUIContent depthInput = new GUIContent("Depth Input", "Choose to bind depth as an input attachment.");
 
             //Camera Settings
             public static GUIContent overrideCamera = new GUIContent("Camera", "Override camera matrices. Toggling this setting will make camera use perspective projection.");
@@ -86,6 +87,7 @@ internal class Styles
         private SerializedProperty m_OverrideDepth;
         private SerializedProperty m_WriteDepth;
         private SerializedProperty m_DepthState;
+        private SerializedProperty m_DepthInput;
         //Stencil props
         private SerializedProperty m_StencilSettings;
         //Caemra props
@@ -140,6 +142,7 @@ private void Init(SerializedProperty property)
             m_OverrideDepth = property.FindPropertyRelative("overrideDepthState");
             m_WriteDepth = property.FindPropertyRelative("enableWrite");
             m_DepthState = property.FindPropertyRelative("depthCompareFunction");
+            m_DepthInput = property.FindPropertyRelative("depthInput");
 
             //Stencil
             m_StencilSettings = property.FindPropertyRelative("stencilSettings");
@@ -278,6 +281,13 @@ void DoDepthOverride(ref Rect rect)
                 EditorGUI.indentLevel++;
                 //Write depth
                 EditorGUI.PropertyField(rect, m_WriteDepth, Styles.writeDepth);
+                rect.y += Styles.defaultLineSpace;
+                EditorGUI.PropertyField(rect, m_DepthInput, Styles.depthInput);
+                if (m_DepthInput.boolValue && m_WriteDepth.boolValue) {
+                    Debug.LogWarning("Depth Input and Write Depth can't be used at the same time. Write Depth has been disabled.");
+                    m_WriteDepth.boolValue = false;
+                }
+                
                 rect.y += Styles.defaultLineSpace;
                 //Depth testing options
                 EditorGUI.PropertyField(rect, m_DepthState, Styles.depthState);