Separate viewport target and descriptor ownership

2026-04-13 19:57:25 +08:00
parent f3fc34898a
commit 5b89c2bb76
10 changed files with 534 additions and 433 deletions
--- a/new_editor/app/Host/D3D12ShaderResourceDescriptorAllocator.h
+++ b/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