Separate viewport target and descriptor ownership

docs/plan/NewEditor_宿主重构计划_2026-04-13.md

@@ -175,4 +175,6 @@
 1. 已新增 `HostRuntimeState`，把宿主 DPI / interactive resize / pending resize / deferred render 状态从 `Application` 中抽离。
 2. 已新增 `WindowMessageDispatcher`，把 `WndProc` 中的宿主消息调度与 deferred render 调度拆到 `Host` 层。
 3. 已把 `D3D12WindowRenderLoop` 从悬空 helper 升级为主窗口帧编排入口，开始统一 `BeginFrame / viewport render / UI present / fallback / resize interop` 这条链。
-4. 下一步进入阶段 2 主体：继续拆 `NativeRenderer` 中的窗口互操作 / present 组合路径，并把 viewport render target 生命周期从 `ProductViewportHostService` 中收出去。
+4. 已把 viewport render target 资源工厂从 `ProductViewportRenderTargets.h` 收成独立 manager，`ProductViewportHostService` 只保留请求/返回 frame 的业务外壳。
+5. 已把 shader resource descriptor 分配职责从 `D3D12WindowRenderer` 抽到独立的 `D3D12ShaderResourceDescriptorAllocator`，减少窗口呈现器的非 swapchain 职责。
+6. 下一步进入阶段 2 主体：继续拆 `NativeRenderer` 中的窗口互操作 / present 组合路径，把 D2D UI 光栅化与 D3D11On12 窗口合成进一步分离。

new_editor/CMakeLists.txt

@@ -124,6 +124,7 @@ target_link_libraries(XCUIEditorLib PUBLIC
 
 add_library(XCUIEditorHost STATIC
     app/Host/AutoScreenshot.cpp
+    app/Host/D3D12ShaderResourceDescriptorAllocator.cpp
     app/Host/D3D12WindowRenderer.cpp
     app/Host/D3D12WindowRenderLoop.cpp
     app/Host/NativeRenderer.cpp
@@ -166,6 +167,7 @@ if(XCENGINE_BUILD_XCUI_EDITOR_APP)
         app/Project/ProductProjectBrowserModel.cpp
         app/Shell/ProductShellAsset.cpp
         app/Viewport/ProductViewportHostService.cpp
+        app/Viewport/ProductViewportRenderTargetManager.cpp
         app/Viewport/ProductViewportRenderTargets.cpp
         app/Workspace/ProductEditorWorkspace.cpp
         app/Workspace/ProductEditorWorkspaceEventRouter.cpp

new_editor/app/Host/D3D12ShaderResourceDescriptorAllocator.cpp

@@ -0,0 +1,169 @@
+#include "D3D12ShaderResourceDescriptorAllocator.h"
+
+#include <XCEngine/RHI/RHITypes.h>
+
+namespace XCEngine::UI::Editor::Host {
+
+namespace {
+
+using ::XCEngine::RHI::D3D12DescriptorHeap;
+using ::XCEngine::RHI::D3D12Device;
+using ::XCEngine::RHI::D3D12Texture;
+using ::XCEngine::RHI::DescriptorHeapType;
+using ::XCEngine::RHI::DescriptorPoolDesc;
+using ::XCEngine::RHI::RHIDevice;
+using ::XCEngine::RHI::RHITexture;
+
+} // namespace
+
+bool D3D12ShaderResourceDescriptorAllocator::Initialize(RHIDevice& device, UINT descriptorCount) {
+    Shutdown();
+
+    DescriptorPoolDesc descriptorPoolDesc = {};
+    descriptorPoolDesc.type = DescriptorHeapType::CBV_SRV_UAV;
+    descriptorPoolDesc.descriptorCount = descriptorCount;
+    descriptorPoolDesc.shaderVisible = true;
+    m_descriptorPool = device.CreateDescriptorPool(descriptorPoolDesc);
+    m_descriptorHeap = dynamic_cast<D3D12DescriptorHeap*>(m_descriptorPool);
+    if (m_descriptorPool == nullptr || m_descriptorHeap == nullptr) {
+        Shutdown();
+        return false;
+    }
+
+    m_device = &device;
+    m_descriptorSize = m_descriptorHeap->GetDescriptorSize();
+    m_descriptorCount = descriptorCount;
+    m_descriptorUsage.assign(descriptorCount, false);
+    return true;
+}
+
+void D3D12ShaderResourceDescriptorAllocator::Shutdown() {
+    if (m_descriptorPool != nullptr) {
+        m_descriptorPool->Shutdown();
+        delete m_descriptorPool;
+        m_descriptorPool = nullptr;
+    }
+
+    m_device = nullptr;
+    m_descriptorHeap = nullptr;
+    m_descriptorUsage.clear();
+    m_descriptorSize = 0u;
+    m_descriptorCount = 0u;
+}
+
+bool D3D12ShaderResourceDescriptorAllocator::IsInitialized() const {
+    return m_device != nullptr &&
+        m_descriptorHeap != nullptr &&
+        m_descriptorSize > 0u &&
+        !m_descriptorUsage.empty();
+}
+
+ID3D12DescriptorHeap* D3D12ShaderResourceDescriptorAllocator::GetDescriptorHeap() const {
+    return m_descriptorHeap != nullptr ? m_descriptorHeap->GetDescriptorHeap() : nullptr;
+}
+
+UINT D3D12ShaderResourceDescriptorAllocator::GetDescriptorSize() const {
+    return m_descriptorSize;
+}
+
+UINT D3D12ShaderResourceDescriptorAllocator::GetDescriptorCount() const {
+    return m_descriptorCount;
+}
+
+void D3D12ShaderResourceDescriptorAllocator::Allocate(
+    D3D12_CPU_DESCRIPTOR_HANDLE* outCpuHandle,
+    D3D12_GPU_DESCRIPTOR_HANDLE* outGpuHandle) {
+    AllocateInternal(outCpuHandle, outGpuHandle);
+}
+
+bool D3D12ShaderResourceDescriptorAllocator::CreateTextureDescriptor(
+    RHITexture* texture,
+    D3D12_CPU_DESCRIPTOR_HANDLE* outCpuHandle,
+    D3D12_GPU_DESCRIPTOR_HANDLE* outGpuHandle) {
+    if (m_device == nullptr ||
+        texture == nullptr ||
+        outCpuHandle == nullptr ||
+        outGpuHandle == nullptr) {
+        return false;
+    }
+
+    *outCpuHandle = {};
+    *outGpuHandle = {};
+
+    auto* nativeDevice = dynamic_cast<D3D12Device*>(m_device);
+    auto* nativeTexture = dynamic_cast<D3D12Texture*>(texture);
+    if (nativeDevice == nullptr ||
+        nativeTexture == nullptr ||
+        nativeTexture->GetResource() == nullptr) {
+        return false;
+    }
+
+    AllocateInternal(outCpuHandle, outGpuHandle);
+    if (outCpuHandle->ptr == 0 || outGpuHandle->ptr == 0) {
+        *outCpuHandle = {};
+        *outGpuHandle = {};
+        return false;
+    }
+
+    D3D12_SHADER_RESOURCE_VIEW_DESC srvDesc = {};
+    srvDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
+    srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+    srvDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
+    srvDesc.Texture2D.MipLevels = 1;
+    nativeDevice->GetDevice()->CreateShaderResourceView(
+        nativeTexture->GetResource(),
+        &srvDesc,
+        *outCpuHandle);
+    return true;
+}
+
+void D3D12ShaderResourceDescriptorAllocator::Free(
+    D3D12_CPU_DESCRIPTOR_HANDLE cpuHandle,
+    D3D12_GPU_DESCRIPTOR_HANDLE) {
+    if (m_descriptorHeap == nullptr ||
+        m_descriptorSize == 0u ||
+        cpuHandle.ptr < m_descriptorHeap->GetCPUDescriptorHandleForHeapStart().ptr) {
+        return;
+    }
+
+    const SIZE_T offset =
+        cpuHandle.ptr - m_descriptorHeap->GetCPUDescriptorHandleForHeapStart().ptr;
+    const std::size_t index =
+        static_cast<std::size_t>(offset / m_descriptorSize);
+    if (index < m_descriptorUsage.size()) {
+        m_descriptorUsage[index] = false;
+    }
+}
+
+void D3D12ShaderResourceDescriptorAllocator::AllocateInternal(
+    D3D12_CPU_DESCRIPTOR_HANDLE* outCpuHandle,
+    D3D12_GPU_DESCRIPTOR_HANDLE* outGpuHandle) {
+    if (outCpuHandle == nullptr || outGpuHandle == nullptr) {
+        return;
+    }
+
+    *outCpuHandle = {};
+    *outGpuHandle = {};
+    if (m_descriptorHeap == nullptr ||
+        m_descriptorSize == 0u ||
+        m_descriptorUsage.empty()) {
+        return;
+    }
+
+    for (std::size_t index = 0; index < m_descriptorUsage.size(); ++index) {
+        if (m_descriptorUsage[index]) {
+            continue;
+        }
+
+        m_descriptorUsage[index] = true;
+        outCpuHandle->ptr =
+            m_descriptorHeap->GetCPUDescriptorHandleForHeapStart().ptr +
+            static_cast<SIZE_T>(index) * m_descriptorSize;
+        outGpuHandle->ptr =
+            m_descriptorHeap->GetGPUDescriptorHandleForHeapStart().ptr +
+            static_cast<UINT64>(index) * m_descriptorSize;
+        return;
+    }
+}
+
+} // namespace XCEngine::UI::Editor::Host

new_editor/app/Host/D3D12ShaderResourceDescriptorAllocator.h

@@ -0,0 +1,55 @@
+#pragma once
+
+#ifndef NOMINMAX
+#define NOMINMAX
+#endif
+
+#include <XCEngine/RHI/D3D12/D3D12DescriptorHeap.h>
+#include <XCEngine/RHI/D3D12/D3D12Device.h>
+#include <XCEngine/RHI/D3D12/D3D12Texture.h>
+#include <XCEngine/RHI/RHIDescriptorPool.h>
+#include <XCEngine/RHI/RHIDevice.h>
+#include <XCEngine/RHI/RHITexture.h>
+
+#include <d3d12.h>
+#include <windows.h>
+
+#include <vector>
+
+namespace XCEngine::UI::Editor::Host {
+
+class D3D12ShaderResourceDescriptorAllocator {
+public:
+    bool Initialize(::XCEngine::RHI::RHIDevice& device, UINT descriptorCount = 64u);
+    void Shutdown();
+
+    bool IsInitialized() const;
+    ID3D12DescriptorHeap* GetDescriptorHeap() const;
+    UINT GetDescriptorSize() const;
+    UINT GetDescriptorCount() const;
+
+    void Allocate(
+        D3D12_CPU_DESCRIPTOR_HANDLE* outCpuHandle,
+        D3D12_GPU_DESCRIPTOR_HANDLE* outGpuHandle);
+    bool CreateTextureDescriptor(
+        ::XCEngine::RHI::RHITexture* texture,
+        D3D12_CPU_DESCRIPTOR_HANDLE* outCpuHandle,
+        D3D12_GPU_DESCRIPTOR_HANDLE* outGpuHandle);
+    void Free(
+        D3D12_CPU_DESCRIPTOR_HANDLE cpuHandle,
+        D3D12_GPU_DESCRIPTOR_HANDLE gpuHandle);
+
+private:
+    void AllocateInternal(
+        D3D12_CPU_DESCRIPTOR_HANDLE* outCpuHandle,
+        D3D12_GPU_DESCRIPTOR_HANDLE* outGpuHandle);
+
+    ::XCEngine::RHI::RHIDevice* m_device = nullptr;
+    ::XCEngine::RHI::RHIDescriptorPool* m_descriptorPool = nullptr;
+    ::XCEngine::RHI::D3D12DescriptorHeap* m_descriptorHeap = nullptr;
+    std::vector<bool> m_descriptorUsage = {};
+    UINT m_descriptorSize = 0u;
+    UINT m_descriptorCount = 0u;
+};
+
+} // namespace XCEngine::UI::Editor::Host

new_editor/app/Host/D3D12WindowRenderer.cpp

@@ -8,11 +8,8 @@ namespace XCEngine::UI::Editor::Host {
 
 using ::XCEngine::RHI::CommandListDesc;
 using ::XCEngine::RHI::CommandQueueDesc;
-using ::XCEngine::RHI::DescriptorHeapType;
-using ::XCEngine::RHI::DescriptorPoolDesc;
 using ::XCEngine::RHI::D3D12CommandList;
 using ::XCEngine::RHI::D3D12CommandQueue;
-using ::XCEngine::RHI::D3D12DescriptorHeap;
 using ::XCEngine::RHI::D3D12Device;
 using ::XCEngine::RHI::D3D12SwapChain;
 using ::XCEngine::RHI::D3D12Texture;
@@ -101,20 +98,6 @@ bool D3D12WindowRenderer::Initialize(HWND hwnd, int width, int height) {
         return false;
     }
 
-    DescriptorPoolDesc srvPoolDesc = {};
-    srvPoolDesc.type = DescriptorHeapType::CBV_SRV_UAV;
-    srvPoolDesc.descriptorCount = kSrvDescriptorCount;
-    srvPoolDesc.shaderVisible = true;
-    m_srvPool = m_device->CreateDescriptorPool(srvPoolDesc);
-    m_srvHeap = dynamic_cast<D3D12DescriptorHeap*>(m_srvPool);
-    if (m_srvPool == nullptr || m_srvHeap == nullptr) {
-        m_lastError = "Failed to create the D3D12 SRV descriptor heap.";
-        Shutdown();
-        return false;
-    }
-
-    m_srvDescriptorSize = m_srvHeap->GetDescriptorSize();
-    m_srvUsage.assign(kSrvDescriptorCount, false);
     if (!RecreateBackBufferViews()) {
         m_lastError = "Failed to create swap chain back buffer views.";
         Shutdown();
@@ -137,14 +120,6 @@ void D3D12WindowRenderer::Shutdown() {
     ReleaseFrameCompletionFence();
     ReleaseBackBufferViews();
 
-    if (m_srvPool != nullptr) {
-        m_srvPool->Shutdown();
-        delete m_srvPool;
-        m_srvPool = nullptr;
-    }
-    m_srvHeap = nullptr;
-    m_srvUsage.clear();
-
     if (m_swapChain != nullptr) {
         m_swapChain->Shutdown();
         delete m_swapChain;
@@ -175,7 +150,6 @@ void D3D12WindowRenderer::Shutdown() {
     m_width = 0;
     m_height = 0;
     m_activeBackBufferIndex = 0u;
-    m_srvDescriptorSize = 0;
     m_lastError.clear();
 }
 
@@ -250,8 +224,8 @@ bool D3D12WindowRenderer::Resize(int width, int height) {
 }
 
 bool D3D12WindowRenderer::BeginFrame() {
-    if (m_swapChain == nullptr || m_srvHeap == nullptr) {
+    if (m_swapChain == nullptr) {
-        m_lastError = "BeginFrame requires a swap chain, command list, and SRV heap.";
+        m_lastError = "BeginFrame requires an initialized swap chain.";
         return false;
     }
 
@@ -355,10 +329,6 @@ ID3D12Device* D3D12WindowRenderer::GetDevice() const {
     return device != nullptr ? device->GetDevice() : nullptr;
 }
 
-ID3D12DescriptorHeap* D3D12WindowRenderer::GetSrvHeap() const {
-    return m_srvHeap != nullptr ? m_srvHeap->GetDescriptorHeap() : nullptr;
-}
-
 ID3D12CommandQueue* D3D12WindowRenderer::GetCommandQueue() const {
     const D3D12CommandQueue* queue = GetD3D12CommandQueue();
     return queue != nullptr ? queue->GetCommandQueue() : nullptr;
@@ -368,68 +338,6 @@ const std::string& D3D12WindowRenderer::GetLastError() const {
     return m_lastError;
 }
 
-void D3D12WindowRenderer::AllocateShaderResourceDescriptor(
-    D3D12_CPU_DESCRIPTOR_HANDLE* outCpuHandle,
-    D3D12_GPU_DESCRIPTOR_HANDLE* outGpuHandle) {
-    AllocateShaderResourceDescriptorInternal(outCpuHandle, outGpuHandle);
-}
-
-bool D3D12WindowRenderer::CreateShaderResourceTextureDescriptor(
-    RHIDevice* device,
-    ::XCEngine::RHI::RHITexture* texture,
-    D3D12_CPU_DESCRIPTOR_HANDLE* outCpuHandle,
-    D3D12_GPU_DESCRIPTOR_HANDLE* outGpuHandle) {
-    if (device == nullptr ||
-        texture == nullptr ||
-        outCpuHandle == nullptr ||
-        outGpuHandle == nullptr) {
-        return false;
-    }
-
-    *outCpuHandle = {};
-    *outGpuHandle = {};
-
-    auto* nativeDevice = dynamic_cast<D3D12Device*>(device);
-    auto* nativeTexture = dynamic_cast<D3D12Texture*>(texture);
-    if (nativeDevice == nullptr ||
-        nativeTexture == nullptr ||
-        nativeTexture->GetResource() == nullptr) {
-        return false;
-    }
-
-    AllocateShaderResourceDescriptorInternal(outCpuHandle, outGpuHandle);
-    if (outCpuHandle->ptr == 0 || outGpuHandle->ptr == 0) {
-        *outCpuHandle = {};
-        *outGpuHandle = {};
-        return false;
-    }
-
-    D3D12_SHADER_RESOURCE_VIEW_DESC srvDesc = {};
-    srvDesc.Shader4ComponentMapping = D3D12_DEFAULT_SHADER_4_COMPONENT_MAPPING;
-    srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
-    srvDesc.ViewDimension = D3D12_SRV_DIMENSION_TEXTURE2D;
-    srvDesc.Texture2D.MipLevels = 1;
-    nativeDevice->GetDevice()->CreateShaderResourceView(
-        nativeTexture->GetResource(),
-        &srvDesc,
-        *outCpuHandle);
-    return true;
-}
-
-void D3D12WindowRenderer::FreeShaderResourceDescriptor(
-    D3D12_CPU_DESCRIPTOR_HANDLE cpuHandle,
-    D3D12_GPU_DESCRIPTOR_HANDLE gpuHandle) {
-    FreeShaderResourceDescriptorInternal(cpuHandle, gpuHandle);
-}
-
-UINT D3D12WindowRenderer::GetSrvDescriptorSize() const {
-    return m_srvDescriptorSize;
-}
-
-UINT D3D12WindowRenderer::GetSrvDescriptorCount() const {
-    return kSrvDescriptorCount;
-}
-
 RHIDevice* D3D12WindowRenderer::GetRHIDevice() const {
     return m_device;
 }
@@ -504,55 +412,6 @@ D3D12SwapChain* D3D12WindowRenderer::GetD3D12SwapChain() const {
         : nullptr;
 }
 
-void D3D12WindowRenderer::AllocateShaderResourceDescriptorInternal(
-    D3D12_CPU_DESCRIPTOR_HANDLE* outCpuHandle,
-    D3D12_GPU_DESCRIPTOR_HANDLE* outGpuHandle) {
-    if (outCpuHandle == nullptr || outGpuHandle == nullptr) {
-        return;
-    }
-
-    *outCpuHandle = {};
-    *outGpuHandle = {};
-    if (m_srvHeap == nullptr ||
-        m_srvDescriptorSize == 0 ||
-        m_srvUsage.empty()) {
-        return;
-    }
-
-    for (std::size_t index = 0; index < m_srvUsage.size(); ++index) {
-        if (m_srvUsage[index]) {
-            continue;
-        }
-
-        m_srvUsage[index] = true;
-        outCpuHandle->ptr =
-            m_srvHeap->GetCPUDescriptorHandleForHeapStart().ptr +
-            static_cast<SIZE_T>(index) * m_srvDescriptorSize;
-        outGpuHandle->ptr =
-            m_srvHeap->GetGPUDescriptorHandleForHeapStart().ptr +
-            static_cast<UINT64>(index) * m_srvDescriptorSize;
-        return;
-    }
-}
-
-void D3D12WindowRenderer::FreeShaderResourceDescriptorInternal(
-    D3D12_CPU_DESCRIPTOR_HANDLE cpuHandle,
-    D3D12_GPU_DESCRIPTOR_HANDLE) {
-    if (m_srvHeap == nullptr ||
-        m_srvDescriptorSize == 0 ||
-        cpuHandle.ptr < m_srvHeap->GetCPUDescriptorHandleForHeapStart().ptr) {
-        return;
-    }
-
-    const SIZE_T offset =
-        cpuHandle.ptr - m_srvHeap->GetCPUDescriptorHandleForHeapStart().ptr;
-    const std::size_t index =
-        static_cast<std::size_t>(offset / m_srvDescriptorSize);
-    if (index < m_srvUsage.size()) {
-        m_srvUsage[index] = false;
-    }
-}
-
 bool D3D12WindowRenderer::InitializeFrameCompletionFence() {
     ReleaseFrameCompletionFence();
 

new_editor/app/Host/D3D12WindowRenderer.h

@@ -8,7 +8,6 @@
 #include <XCEngine/Rendering/RenderSurface.h>
 #include <XCEngine/RHI/D3D12/D3D12CommandList.h>
 #include <XCEngine/RHI/D3D12/D3D12CommandQueue.h>
-#include <XCEngine/RHI/D3D12/D3D12DescriptorHeap.h>
 #include <XCEngine/RHI/D3D12/D3D12Device.h>
 #include <XCEngine/RHI/D3D12/D3D12SwapChain.h>
 #include <XCEngine/RHI/D3D12/D3D12Texture.h>
@@ -32,7 +31,6 @@ namespace XCEngine::UI::Editor::Host {
 
 class D3D12WindowRenderer {
 public:
-    static constexpr UINT kSrvDescriptorCount = 64;
     static constexpr std::uint32_t kSwapChainBufferCount = 3;
 
     bool Initialize(HWND hwnd, int width, int height);
@@ -45,22 +43,8 @@ public:
     bool PresentFrame();
 
     ID3D12Device* GetDevice() const;
-    ID3D12DescriptorHeap* GetSrvHeap() const;
     ID3D12CommandQueue* GetCommandQueue() const;
     const std::string& GetLastError() const;
-    void AllocateShaderResourceDescriptor(
-        D3D12_CPU_DESCRIPTOR_HANDLE* outCpuHandle,
-        D3D12_GPU_DESCRIPTOR_HANDLE* outGpuHandle);
-    bool CreateShaderResourceTextureDescriptor(
-        ::XCEngine::RHI::RHIDevice* device,
-        ::XCEngine::RHI::RHITexture* texture,
-        D3D12_CPU_DESCRIPTOR_HANDLE* outCpuHandle,
-        D3D12_GPU_DESCRIPTOR_HANDLE* outGpuHandle);
-    void FreeShaderResourceDescriptor(
-        D3D12_CPU_DESCRIPTOR_HANDLE cpuHandle,
-        D3D12_GPU_DESCRIPTOR_HANDLE gpuHandle);
-    UINT GetSrvDescriptorSize() const;
-    UINT GetSrvDescriptorCount() const;
     ::XCEngine::RHI::RHIDevice* GetRHIDevice() const;
     ::XCEngine::RHI::RHISwapChain* GetSwapChain() const;
     const ::XCEngine::Rendering::RenderSurface* GetCurrentRenderSurface() const;
@@ -75,12 +59,6 @@ private:
     ::XCEngine::RHI::D3D12CommandList* GetD3D12CommandList() const;
     ::XCEngine::RHI::D3D12SwapChain* GetD3D12SwapChain() const;
     ::XCEngine::RHI::RHICommandList* GetCurrentCommandList() const;
-    void AllocateShaderResourceDescriptorInternal(
-        D3D12_CPU_DESCRIPTOR_HANDLE* outCpuHandle,
-        D3D12_GPU_DESCRIPTOR_HANDLE* outGpuHandle);
-    void FreeShaderResourceDescriptorInternal(
-        D3D12_CPU_DESCRIPTOR_HANDLE cpuHandle,
-        D3D12_GPU_DESCRIPTOR_HANDLE gpuHandle);
     bool InitializeFrameCompletionFence();
     void ReleaseFrameCompletionFence();
     void WaitForBackBufferFrame(std::uint32_t backBufferIndex);
@@ -97,9 +75,6 @@ private:
     ::XCEngine::RHI::RHICommandQueue* m_commandQueue = nullptr;
     std::array<::XCEngine::RHI::RHICommandList*, kSwapChainBufferCount> m_commandLists = {};
     ::XCEngine::RHI::RHISwapChain* m_swapChain = nullptr;
-    ::XCEngine::RHI::RHIDescriptorPool* m_srvPool = nullptr;
-    ::XCEngine::RHI::D3D12DescriptorHeap* m_srvHeap = nullptr;
-    std::vector<bool> m_srvUsage = {};
     std::vector<::XCEngine::RHI::RHIResourceView*> m_backBufferViews = {};
     std::vector<::XCEngine::Rendering::RenderSurface> m_backBufferSurfaces = {};
     Microsoft::WRL::ComPtr<ID3D12Fence> m_frameCompletionFence = {};
@@ -108,7 +83,6 @@ private:
     std::uint32_t m_activeBackBufferIndex = 0u;
     std::uint64_t m_lastSubmittedFrameValue = 0;
     std::string m_lastError = {};
-    UINT m_srvDescriptorSize = 0;
 };
 
 } // namespace XCEngine::UI::Editor::Host

new_editor/app/Viewport/ProductViewportHostService.cpp

@@ -14,12 +14,18 @@ void ProductViewportHostService::AttachWindowRenderer(
     Host::D3D12WindowRenderer& windowRenderer) {
     if (m_windowRenderer == &windowRenderer) {
         m_device = windowRenderer.GetRHIDevice();
+        if (m_device != nullptr && !m_textureDescriptorAllocator.IsInitialized()) {
+            m_textureDescriptorAllocator.Initialize(*m_device);
+        }
         return;
     }
 
     Shutdown();
     m_windowRenderer = &windowRenderer;
     m_device = windowRenderer.GetRHIDevice();
+    if (m_device != nullptr) {
+        m_textureDescriptorAllocator.Initialize(*m_device);
+    }
 }
 
 void ProductViewportHostService::DetachWindowRenderer() {
@@ -35,6 +41,7 @@ void ProductViewportHostService::Shutdown() {
         DestroyViewportEntry(entry);
     }
 
+    m_textureDescriptorAllocator.Shutdown();
     m_windowRenderer = nullptr;
     m_device = nullptr;
     m_surfacePresentationEnabled = false;
@@ -113,7 +120,7 @@ const ProductViewportHostService::ViewportEntry& ProductViewportHostService::Get
 }
 
 void ProductViewportHostService::DestroyViewportEntry(ViewportEntry& entry) {
-    DestroyProductViewportRenderTargets(m_windowRenderer, entry.renderTargets);
+    m_renderTargetManager.DestroyTargets(&m_textureDescriptorAllocator, entry.renderTargets);
     entry = {};
 }
 
@@ -135,12 +142,12 @@ bool ProductViewportHostService::EnsureViewportResources(ViewportEntry& entry) {
         return false;
     }
 
-    return CreateProductViewportRenderTargets(
+    return m_renderTargetManager.EnsureTargets(
         entry.kind,
         entry.requestedWidth,
         entry.requestedHeight,
-        m_device,
+        *m_device,
-        *m_windowRenderer,
+        m_textureDescriptorAllocator,
         entry.renderTargets);
 }
 

new_editor/app/Viewport/ProductViewportHostService.h

@@ -3,6 +3,7 @@
 #include "ProductViewportRenderTargets.h"
 
 #include <Host/D3D12WindowRenderer.h>
+#include <Host/D3D12ShaderResourceDescriptorAllocator.h>
 
 #include <XCEngine/Rendering/RenderContext.h>
 #include <XCEngine/UI/Types.h>
@@ -57,6 +58,8 @@ private:
 
     Host::D3D12WindowRenderer* m_windowRenderer = nullptr;
     ::XCEngine::RHI::RHIDevice* m_device = nullptr;
+    Host::D3D12ShaderResourceDescriptorAllocator m_textureDescriptorAllocator = {};
+    ProductViewportRenderTargetManager m_renderTargetManager = {};
     bool m_surfacePresentationEnabled = false;
     std::array<ViewportEntry, 2> m_entries = {};
 };

new_editor/app/Viewport/ProductViewportRenderTargetManager.cpp

@@ -0,0 +1,267 @@
+#include "ProductViewportRenderTargets.h"
+
+namespace XCEngine::UI::Editor::App {
+
+namespace {
+
+template <typename ResourceType>
+void ShutdownAndDeleteViewportResource(ResourceType*& resource) {
+    if (resource == nullptr) {
+        return;
+    }
+
+    resource->Shutdown();
+    delete resource;
+    resource = nullptr;
+}
+
+bool CreateViewportColorResources(
+    ::XCEngine::RHI::RHIDevice& device,
+    ProductViewportRenderTargets& targets) {
+    const auto colorDesc =
+        BuildProductViewportTextureDesc(targets.width, targets.height, ::XCEngine::RHI::Format::R8G8B8A8_UNorm);
+    targets.colorTexture = device.CreateTexture(colorDesc);
+    if (targets.colorTexture == nullptr) {
+        return false;
+    }
+
+    const auto colorViewDesc =
+        BuildProductViewportTextureViewDesc(::XCEngine::RHI::Format::R8G8B8A8_UNorm);
+    targets.colorView = device.CreateRenderTargetView(targets.colorTexture, colorViewDesc);
+    return targets.colorView != nullptr;
+}
+
+bool CreateViewportDepthResources(
+    ::XCEngine::RHI::RHIDevice& device,
+    ProductViewportRenderTargets& targets) {
+    const auto depthDesc =
+        BuildProductViewportTextureDesc(targets.width, targets.height, ::XCEngine::RHI::Format::D24_UNorm_S8_UInt);
+    targets.depthTexture = device.CreateTexture(depthDesc);
+    if (targets.depthTexture == nullptr) {
+        return false;
+    }
+
+    const auto depthViewDesc =
+        BuildProductViewportTextureViewDesc(::XCEngine::RHI::Format::D24_UNorm_S8_UInt);
+    targets.depthView = device.CreateDepthStencilView(targets.depthTexture, depthViewDesc);
+    if (targets.depthView == nullptr) {
+        return false;
+    }
+
+    ::XCEngine::RHI::ResourceViewDesc depthShaderViewDesc = {};
+    depthShaderViewDesc.dimension = ::XCEngine::RHI::ResourceViewDimension::Texture2D;
+    depthShaderViewDesc.mipLevel = 0;
+    targets.depthShaderView = device.CreateShaderResourceView(
+        targets.depthTexture,
+        depthShaderViewDesc);
+    return targets.depthShaderView != nullptr;
+}
+
+bool CreateViewportObjectIdResources(
+    ::XCEngine::RHI::RHIDevice& device,
+    ProductViewportRenderTargets& targets) {
+    const auto objectIdDesc =
+        BuildProductViewportTextureDesc(targets.width, targets.height, ::XCEngine::RHI::Format::R8G8B8A8_UNorm);
+    targets.objectIdTexture = device.CreateTexture(objectIdDesc);
+    if (targets.objectIdTexture == nullptr) {
+        return false;
+    }
+
+    const auto objectIdViewDesc =
+        BuildProductViewportTextureViewDesc(::XCEngine::RHI::Format::R8G8B8A8_UNorm);
+    targets.objectIdView = device.CreateRenderTargetView(targets.objectIdTexture, objectIdViewDesc);
+    if (targets.objectIdView == nullptr) {
+        return false;
+    }
+
+    targets.objectIdShaderView = device.CreateShaderResourceView(
+        targets.objectIdTexture,
+        objectIdViewDesc);
+    if (targets.objectIdShaderView == nullptr) {
+        return false;
+    }
+
+    const auto objectIdDepthDesc =
+        BuildProductViewportTextureDesc(targets.width, targets.height, ::XCEngine::RHI::Format::D24_UNorm_S8_UInt);
+    targets.objectIdDepthTexture = device.CreateTexture(objectIdDepthDesc);
+    if (targets.objectIdDepthTexture == nullptr) {
+        return false;
+    }
+
+    const auto objectIdDepthViewDesc =
+        BuildProductViewportTextureViewDesc(::XCEngine::RHI::Format::D24_UNorm_S8_UInt);
+    targets.objectIdDepthView = device.CreateDepthStencilView(
+        targets.objectIdDepthTexture,
+        objectIdDepthViewDesc);
+    return targets.objectIdDepthView != nullptr;
+}
+
+bool CreateViewportSelectionMaskResources(
+    ::XCEngine::RHI::RHIDevice& device,
+    ProductViewportRenderTargets& targets) {
+    const auto selectionMaskDesc =
+        BuildProductViewportTextureDesc(targets.width, targets.height, ::XCEngine::RHI::Format::R8G8B8A8_UNorm);
+    targets.selectionMaskTexture = device.CreateTexture(selectionMaskDesc);
+    if (targets.selectionMaskTexture == nullptr) {
+        return false;
+    }
+
+    const auto selectionMaskViewDesc =
+        BuildProductViewportTextureViewDesc(::XCEngine::RHI::Format::R8G8B8A8_UNorm);
+    targets.selectionMaskView = device.CreateRenderTargetView(
+        targets.selectionMaskTexture,
+        selectionMaskViewDesc);
+    if (targets.selectionMaskView == nullptr) {
+        return false;
+    }
+
+    targets.selectionMaskShaderView = device.CreateShaderResourceView(
+        targets.selectionMaskTexture,
+        selectionMaskViewDesc);
+    return targets.selectionMaskShaderView != nullptr;
+}
+
+bool CreateViewportTextureDescriptor(
+    Host::D3D12ShaderResourceDescriptorAllocator& textureDescriptorAllocator,
+    ProductViewportRenderTargets& targets) {
+    if (!textureDescriptorAllocator.CreateTextureDescriptor(
+            targets.colorTexture,
+            &targets.srvCpuHandle,
+            &targets.srvGpuHandle)) {
+        return false;
+    }
+
+    targets.textureHandle.nativeHandle = static_cast<std::uintptr_t>(targets.srvGpuHandle.ptr);
+    targets.textureHandle.width = targets.width;
+    targets.textureHandle.height = targets.height;
+    targets.textureHandle.kind = ::XCEngine::UI::UITextureHandleKind::ShaderResourceView;
+    targets.textureHandle.resourceHandle =
+        reinterpret_cast<std::uintptr_t>(targets.colorTexture);
+    return true;
+}
+
+} // namespace
+
+ProductViewportResourceReuseQuery BuildProductViewportRenderTargetsReuseQuery(
+    ProductViewportKind kind,
+    const ProductViewportRenderTargets& targets,
+    std::uint32_t requestedWidth,
+    std::uint32_t requestedHeight) {
+    ProductViewportResourceReuseQuery query = {};
+    query.kind = kind;
+    query.width = targets.width;
+    query.height = targets.height;
+    query.requestedWidth = requestedWidth;
+    query.requestedHeight = requestedHeight;
+    query.resources.hasColorTexture = targets.colorTexture != nullptr;
+    query.resources.hasColorView = targets.colorView != nullptr;
+    query.resources.hasDepthTexture = targets.depthTexture != nullptr;
+    query.resources.hasDepthView = targets.depthView != nullptr;
+    query.resources.hasDepthShaderView = targets.depthShaderView != nullptr;
+    query.resources.hasObjectIdTexture = targets.objectIdTexture != nullptr;
+    query.resources.hasObjectIdDepthTexture = targets.objectIdDepthTexture != nullptr;
+    query.resources.hasObjectIdDepthView = targets.objectIdDepthView != nullptr;
+    query.resources.hasObjectIdView = targets.objectIdView != nullptr;
+    query.resources.hasObjectIdShaderView = targets.objectIdShaderView != nullptr;
+    query.resources.hasSelectionMaskTexture = targets.selectionMaskTexture != nullptr;
+    query.resources.hasSelectionMaskView = targets.selectionMaskView != nullptr;
+    query.resources.hasSelectionMaskShaderView = targets.selectionMaskShaderView != nullptr;
+    query.resources.hasTextureDescriptor = targets.textureHandle.IsValid();
+    return query;
+}
+
+::XCEngine::Rendering::RenderSurface BuildProductViewportColorSurface(
+    const ProductViewportRenderTargets& targets) {
+    return BuildProductViewportRenderSurface(
+        targets.width,
+        targets.height,
+        targets.colorView,
+        targets.depthView,
+        targets.colorState);
+}
+
+::XCEngine::Rendering::RenderSurface BuildProductViewportObjectIdSurface(
+    const ProductViewportRenderTargets& targets) {
+    return BuildProductViewportRenderSurface(
+        targets.width,
+        targets.height,
+        targets.objectIdView,
+        targets.objectIdDepthView,
+        targets.objectIdState);
+}
+
+::XCEngine::Rendering::RenderSurface BuildProductViewportSelectionMaskSurface(
+    const ProductViewportRenderTargets& targets) {
+    return BuildProductViewportRenderSurface(
+        targets.width,
+        targets.height,
+        targets.selectionMaskView,
+        targets.depthView,
+        targets.selectionMaskState);
+}
+
+bool ProductViewportRenderTargetManager::EnsureTargets(
+    ProductViewportKind kind,
+    std::uint32_t width,
+    std::uint32_t height,
+    ::XCEngine::RHI::RHIDevice& device,
+    Host::D3D12ShaderResourceDescriptorAllocator& textureDescriptorAllocator,
+    ProductViewportRenderTargets& targets) const {
+    if (width == 0u || height == 0u) {
+        return false;
+    }
+
+    DestroyTargets(&textureDescriptorAllocator, targets);
+    targets.width = width;
+    targets.height = height;
+
+    if (!CreateViewportColorResources(device, targets) ||
+        !CreateViewportDepthResources(device, targets) ||
+        (ProductViewportRequiresObjectIdResources(kind) &&
+         (!CreateViewportObjectIdResources(device, targets) ||
+          !CreateViewportSelectionMaskResources(device, targets))) ||
+        !CreateViewportTextureDescriptor(textureDescriptorAllocator, targets)) {
+        DestroyTargets(&textureDescriptorAllocator, targets);
+        return false;
+    }
+
+    targets.colorState = ::XCEngine::RHI::ResourceStates::Common;
+    targets.objectIdState = ::XCEngine::RHI::ResourceStates::Common;
+    targets.selectionMaskState = ::XCEngine::RHI::ResourceStates::Common;
+    targets.hasValidObjectIdFrame = false;
+    return true;
+}
+
+void ProductViewportRenderTargetManager::DestroyTargets(
+    Host::D3D12ShaderResourceDescriptorAllocator* textureDescriptorAllocator,
+    ProductViewportRenderTargets& targets) const {
+    if (textureDescriptorAllocator != nullptr && targets.srvCpuHandle.ptr != 0) {
+        textureDescriptorAllocator->Free(targets.srvCpuHandle, targets.srvGpuHandle);
+    }
+
+    ShutdownAndDeleteViewportResource(targets.objectIdView);
+    ShutdownAndDeleteViewportResource(targets.objectIdShaderView);
+    ShutdownAndDeleteViewportResource(targets.objectIdDepthView);
+    ShutdownAndDeleteViewportResource(targets.objectIdDepthTexture);
+    ShutdownAndDeleteViewportResource(targets.objectIdTexture);
+    ShutdownAndDeleteViewportResource(targets.selectionMaskView);
+    ShutdownAndDeleteViewportResource(targets.selectionMaskShaderView);
+    ShutdownAndDeleteViewportResource(targets.selectionMaskTexture);
+    ShutdownAndDeleteViewportResource(targets.depthShaderView);
+    ShutdownAndDeleteViewportResource(targets.depthView);
+    ShutdownAndDeleteViewportResource(targets.depthTexture);
+    ShutdownAndDeleteViewportResource(targets.colorView);
+    ShutdownAndDeleteViewportResource(targets.colorTexture);
+
+    targets.width = 0;
+    targets.height = 0;
+    targets.srvCpuHandle = {};
+    targets.srvGpuHandle = {};
+    targets.textureHandle = {};
+    targets.colorState = ::XCEngine::RHI::ResourceStates::Common;
+    targets.objectIdState = ::XCEngine::RHI::ResourceStates::Common;
+    targets.selectionMaskState = ::XCEngine::RHI::ResourceStates::Common;
+    targets.hasValidObjectIdFrame = false;
+}
+
+} // namespace XCEngine::UI::Editor::App

new_editor/app/Viewport/ProductViewportRenderTargets.h

@@ -2,7 +2,7 @@
 
 #include "ProductViewportSurfaceUtils.h"
 
-#include <Host/D3D12WindowRenderer.h>
+#include <Host/D3D12ShaderResourceDescriptorAllocator.h>
 
 #include <XCEngine/RHI/RHIDevice.h>
 #include <XCEngine/RHI/RHIResourceView.h>
@@ -36,268 +36,31 @@ struct ProductViewportRenderTargets {
     bool hasValidObjectIdFrame = false;
 };
 
-inline ProductViewportResourceReuseQuery BuildProductViewportRenderTargetsReuseQuery(
+ProductViewportResourceReuseQuery BuildProductViewportRenderTargetsReuseQuery(
     ProductViewportKind kind,
     const ProductViewportRenderTargets& targets,
     std::uint32_t requestedWidth,
-    std::uint32_t requestedHeight) {
+    std::uint32_t requestedHeight);
-    ProductViewportResourceReuseQuery query = {};
-    query.kind = kind;
-    query.width = targets.width;
-    query.height = targets.height;
-    query.requestedWidth = requestedWidth;
-    query.requestedHeight = requestedHeight;
-    query.resources.hasColorTexture = targets.colorTexture != nullptr;
-    query.resources.hasColorView = targets.colorView != nullptr;
-    query.resources.hasDepthTexture = targets.depthTexture != nullptr;
-    query.resources.hasDepthView = targets.depthView != nullptr;
-    query.resources.hasDepthShaderView = targets.depthShaderView != nullptr;
-    query.resources.hasObjectIdTexture = targets.objectIdTexture != nullptr;
-    query.resources.hasObjectIdDepthTexture = targets.objectIdDepthTexture != nullptr;
-    query.resources.hasObjectIdDepthView = targets.objectIdDepthView != nullptr;
-    query.resources.hasObjectIdView = targets.objectIdView != nullptr;
-    query.resources.hasObjectIdShaderView = targets.objectIdShaderView != nullptr;
-    query.resources.hasSelectionMaskTexture = targets.selectionMaskTexture != nullptr;
-    query.resources.hasSelectionMaskView = targets.selectionMaskView != nullptr;
-    query.resources.hasSelectionMaskShaderView = targets.selectionMaskShaderView != nullptr;
-    query.resources.hasTextureDescriptor = targets.textureHandle.IsValid();
-    return query;
-}
 
-inline ::XCEngine::Rendering::RenderSurface BuildProductViewportColorSurface(
+::XCEngine::Rendering::RenderSurface BuildProductViewportColorSurface(
-    const ProductViewportRenderTargets& targets) {
+    const ProductViewportRenderTargets& targets);
-    return BuildProductViewportRenderSurface(
+::XCEngine::Rendering::RenderSurface BuildProductViewportObjectIdSurface(
-        targets.width,
+    const ProductViewportRenderTargets& targets);
-        targets.height,
+::XCEngine::Rendering::RenderSurface BuildProductViewportSelectionMaskSurface(
-        targets.colorView,
+    const ProductViewportRenderTargets& targets);
-        targets.depthView,
-        targets.colorState);
-}
 
-inline ::XCEngine::Rendering::RenderSurface BuildProductViewportObjectIdSurface(
+class ProductViewportRenderTargetManager {
-    const ProductViewportRenderTargets& targets) {
+public:
-    return BuildProductViewportRenderSurface(
+    bool EnsureTargets(
-        targets.width,
-        targets.height,
-        targets.objectIdView,
-        targets.objectIdDepthView,
-        targets.objectIdState);
-}
-
-inline ::XCEngine::Rendering::RenderSurface BuildProductViewportSelectionMaskSurface(
-    const ProductViewportRenderTargets& targets) {
-    return BuildProductViewportRenderSurface(
-        targets.width,
-        targets.height,
-        targets.selectionMaskView,
-        targets.depthView,
-        targets.selectionMaskState);
-}
-
-namespace Internal {
-
-template <typename ResourceType>
-inline void ShutdownAndDeleteViewportResource(ResourceType*& resource) {
-    if (resource == nullptr) {
-        return;
-    }
-
-    resource->Shutdown();
-    delete resource;
-    resource = nullptr;
-}
-
-inline bool CreateViewportColorResources(
-    ::XCEngine::RHI::RHIDevice* device,
-    ProductViewportRenderTargets& targets) {
-    const auto colorDesc =
-        BuildProductViewportTextureDesc(targets.width, targets.height, ::XCEngine::RHI::Format::R8G8B8A8_UNorm);
-    targets.colorTexture = device->CreateTexture(colorDesc);
-    if (targets.colorTexture == nullptr) {
-        return false;
-    }
-
-    const auto colorViewDesc =
-        BuildProductViewportTextureViewDesc(::XCEngine::RHI::Format::R8G8B8A8_UNorm);
-    targets.colorView = device->CreateRenderTargetView(targets.colorTexture, colorViewDesc);
-    return targets.colorView != nullptr;
-}
-
-inline bool CreateViewportDepthResources(
-    ::XCEngine::RHI::RHIDevice* device,
-    ProductViewportRenderTargets& targets) {
-    const auto depthDesc =
-        BuildProductViewportTextureDesc(targets.width, targets.height, ::XCEngine::RHI::Format::D24_UNorm_S8_UInt);
-    targets.depthTexture = device->CreateTexture(depthDesc);
-    if (targets.depthTexture == nullptr) {
-        return false;
-    }
-
-    const auto depthViewDesc =
-        BuildProductViewportTextureViewDesc(::XCEngine::RHI::Format::D24_UNorm_S8_UInt);
-    targets.depthView = device->CreateDepthStencilView(targets.depthTexture, depthViewDesc);
-    if (targets.depthView == nullptr) {
-        return false;
-    }
-
-    ::XCEngine::RHI::ResourceViewDesc depthShaderViewDesc = {};
-    depthShaderViewDesc.dimension = ::XCEngine::RHI::ResourceViewDimension::Texture2D;
-    depthShaderViewDesc.mipLevel = 0;
-    targets.depthShaderView = device->CreateShaderResourceView(
-        targets.depthTexture,
-        depthShaderViewDesc);
-    return targets.depthShaderView != nullptr;
-}
-
-inline bool CreateViewportObjectIdResources(
-    ::XCEngine::RHI::RHIDevice* device,
-    ProductViewportRenderTargets& targets) {
-    const auto objectIdDesc =
-        BuildProductViewportTextureDesc(targets.width, targets.height, ::XCEngine::RHI::Format::R8G8B8A8_UNorm);
-    targets.objectIdTexture = device->CreateTexture(objectIdDesc);
-    if (targets.objectIdTexture == nullptr) {
-        return false;
-    }
-
-    const auto objectIdViewDesc =
-        BuildProductViewportTextureViewDesc(::XCEngine::RHI::Format::R8G8B8A8_UNorm);
-    targets.objectIdView = device->CreateRenderTargetView(targets.objectIdTexture, objectIdViewDesc);
-    if (targets.objectIdView == nullptr) {
-        return false;
-    }
-
-    targets.objectIdShaderView = device->CreateShaderResourceView(
-        targets.objectIdTexture,
-        objectIdViewDesc);
-    if (targets.objectIdShaderView == nullptr) {
-        return false;
-    }
-
-    const auto objectIdDepthDesc =
-        BuildProductViewportTextureDesc(targets.width, targets.height, ::XCEngine::RHI::Format::D24_UNorm_S8_UInt);
-    targets.objectIdDepthTexture = device->CreateTexture(objectIdDepthDesc);
-    if (targets.objectIdDepthTexture == nullptr) {
-        return false;
-    }
-
-    const auto objectIdDepthViewDesc =
-        BuildProductViewportTextureViewDesc(::XCEngine::RHI::Format::D24_UNorm_S8_UInt);
-    targets.objectIdDepthView = device->CreateDepthStencilView(
-        targets.objectIdDepthTexture,
-        objectIdDepthViewDesc);
-    return targets.objectIdDepthView != nullptr;
-}
-
-inline bool CreateViewportSelectionMaskResources(
-    ::XCEngine::RHI::RHIDevice* device,
-    ProductViewportRenderTargets& targets) {
-    const auto selectionMaskDesc =
-        BuildProductViewportTextureDesc(targets.width, targets.height, ::XCEngine::RHI::Format::R8G8B8A8_UNorm);
-    targets.selectionMaskTexture = device->CreateTexture(selectionMaskDesc);
-    if (targets.selectionMaskTexture == nullptr) {
-        return false;
-    }
-
-    const auto selectionMaskViewDesc =
-        BuildProductViewportTextureViewDesc(::XCEngine::RHI::Format::R8G8B8A8_UNorm);
-    targets.selectionMaskView = device->CreateRenderTargetView(
-        targets.selectionMaskTexture,
-        selectionMaskViewDesc);
-    if (targets.selectionMaskView == nullptr) {
-        return false;
-    }
-
-    targets.selectionMaskShaderView = device->CreateShaderResourceView(
-        targets.selectionMaskTexture,
-        selectionMaskViewDesc);
-    return targets.selectionMaskShaderView != nullptr;
-}
-
-inline bool CreateViewportTextureDescriptor(
-    Host::D3D12WindowRenderer& windowRenderer,
-    ::XCEngine::RHI::RHIDevice* device,
-    ProductViewportRenderTargets& targets) {
-    if (!windowRenderer.CreateShaderResourceTextureDescriptor(
-            device,
-            targets.colorTexture,
-            &targets.srvCpuHandle,
-            &targets.srvGpuHandle)) {
-        return false;
-    }
-
-    targets.textureHandle.nativeHandle = static_cast<std::uintptr_t>(targets.srvGpuHandle.ptr);
-    targets.textureHandle.width = targets.width;
-    targets.textureHandle.height = targets.height;
-    targets.textureHandle.kind = ::XCEngine::UI::UITextureHandleKind::ShaderResourceView;
-    targets.textureHandle.resourceHandle =
-        reinterpret_cast<std::uintptr_t>(targets.colorTexture);
-    return true;
-}
-
-} // namespace Internal
-
-inline void DestroyProductViewportRenderTargets(
-    Host::D3D12WindowRenderer* windowRenderer,
-    ProductViewportRenderTargets& targets) {
-    if (windowRenderer != nullptr && targets.srvCpuHandle.ptr != 0) {
-        windowRenderer->FreeShaderResourceDescriptor(targets.srvCpuHandle, targets.srvGpuHandle);
-    }
-
-    Internal::ShutdownAndDeleteViewportResource(targets.objectIdView);
-    Internal::ShutdownAndDeleteViewportResource(targets.objectIdShaderView);
-    Internal::ShutdownAndDeleteViewportResource(targets.objectIdDepthView);
-    Internal::ShutdownAndDeleteViewportResource(targets.objectIdDepthTexture);
-    Internal::ShutdownAndDeleteViewportResource(targets.objectIdTexture);
-    Internal::ShutdownAndDeleteViewportResource(targets.selectionMaskView);
-    Internal::ShutdownAndDeleteViewportResource(targets.selectionMaskShaderView);
-    Internal::ShutdownAndDeleteViewportResource(targets.selectionMaskTexture);
-    Internal::ShutdownAndDeleteViewportResource(targets.depthShaderView);
-    Internal::ShutdownAndDeleteViewportResource(targets.depthView);
-    Internal::ShutdownAndDeleteViewportResource(targets.depthTexture);
-    Internal::ShutdownAndDeleteViewportResource(targets.colorView);
-    Internal::ShutdownAndDeleteViewportResource(targets.colorTexture);
-
-    targets.width = 0;
-    targets.height = 0;
-    targets.srvCpuHandle = {};
-    targets.srvGpuHandle = {};
-    targets.textureHandle = {};
-    targets.colorState = ::XCEngine::RHI::ResourceStates::Common;
-    targets.objectIdState = ::XCEngine::RHI::ResourceStates::Common;
-    targets.selectionMaskState = ::XCEngine::RHI::ResourceStates::Common;
-    targets.hasValidObjectIdFrame = false;
-}
-
-inline bool CreateProductViewportRenderTargets(
         ProductViewportKind kind,
         std::uint32_t width,
         std::uint32_t height,
-    ::XCEngine::RHI::RHIDevice* device,
+        ::XCEngine::RHI::RHIDevice& device,
-    Host::D3D12WindowRenderer& windowRenderer,
+        Host::D3D12ShaderResourceDescriptorAllocator& textureDescriptorAllocator,
-    ProductViewportRenderTargets& targets) {
+        ProductViewportRenderTargets& targets) const;
-    if (width == 0u || height == 0u || device == nullptr) {
+    void DestroyTargets(
-        return false;
+        Host::D3D12ShaderResourceDescriptorAllocator* textureDescriptorAllocator,
-    }
+        ProductViewportRenderTargets& targets) const;
-
+};
-    DestroyProductViewportRenderTargets(&windowRenderer, targets);
-    targets.width = width;
-    targets.height = height;
-
-    if (!Internal::CreateViewportColorResources(device, targets) ||
-        !Internal::CreateViewportDepthResources(device, targets) ||
-        (ProductViewportRequiresObjectIdResources(kind) &&
-         (!Internal::CreateViewportObjectIdResources(device, targets) ||
-          !Internal::CreateViewportSelectionMaskResources(device, targets))) ||
-        !Internal::CreateViewportTextureDescriptor(windowRenderer, device, targets)) {
-        DestroyProductViewportRenderTargets(&windowRenderer, targets);
-        return false;
-    }
-
-    targets.colorState = ::XCEngine::RHI::ResourceStates::Common;
-    targets.objectIdState = ::XCEngine::RHI::ResourceStates::Common;
-    targets.selectionMaskState = ::XCEngine::RHI::ResourceStates::Common;
-    targets.hasValidObjectIdFrame = false;
-    return true;
-}
 
 } // namespace XCEngine::UI::Editor::App