refactor: route builtin object-id pass through shader assets

engine/include/XCEngine/Rendering/Passes/BuiltinObjectIdPass.h

@@ -3,6 +3,9 @@
 #include <XCEngine/Rendering/ObjectIdPass.h>
 #include <XCEngine/Rendering/ObjectIdEncoding.h>
 #include <XCEngine/Rendering/RenderResourceCache.h>
+#include <XCEngine/Core/Asset/ResourceHandle.h>
+#include <XCEngine/RHI/RHIPipelineState.h>
+#include <XCEngine/Resources/Shader/Shader.h>
 
 #include <unordered_map>
 
@@ -14,6 +17,8 @@ class BuiltinObjectIdPass final : public ObjectIdPass {
 public:
     ~BuiltinObjectIdPass() override;
 
+    static RHI::InputLayoutDesc BuildInputLayout();
+
     bool Render(
         const RenderContext& context,
         const RenderSurface& surface,
@@ -49,6 +54,7 @@ private:
     RHI::RHIType m_backendType = RHI::RHIType::D3D12;
     RHI::RHIPipelineLayout* m_pipelineLayout = nullptr;
     RHI::RHIPipelineState* m_pipelineState = nullptr;
+    Resources::ResourceHandle<Resources::Shader> m_builtinObjectIdShader;
     RenderResourceCache m_resourceCache;
     std::unordered_map<uint64_t, OwnedDescriptorSet> m_perObjectSets;
 };

engine/include/XCEngine/Resources/BuiltinResources.h

@@ -24,6 +24,7 @@ const char* GetBuiltinPrimitiveDisplayName(BuiltinPrimitiveType primitiveType);
 Containers::String GetBuiltinPrimitiveMeshPath(BuiltinPrimitiveType primitiveType);
 Containers::String GetBuiltinDefaultPrimitiveMaterialPath();
 Containers::String GetBuiltinForwardLitShaderPath();
+Containers::String GetBuiltinObjectIdShaderPath();
 Containers::String GetBuiltinDefaultPrimitiveTexturePath();
 
 bool TryParseBuiltinPrimitiveType(const Containers::String& path, BuiltinPrimitiveType& outPrimitiveType);