RHI: 增强RHIResourceView抽象接口，添加GetViewType/GetDimension/GetFormat虚函数

- 在RHIResourceView基类添加3个纯虚函数：GetViewType()、GetDimension()、GetFormat()
- D3D12ResourceView和OpenGLResourceView子类实现这些虚函数
- 在各InitializeAs*方法中正确存储format和dimension信息
- 消除调用者必须向下转型才能获取视图类型的需求

engine/include/XCEngine/RHI/D3D12/D3D12ResourceView.h

@@ -24,7 +24,9 @@ public:
     bool IsValid() const override;
 
     void SetViewType(ResourceViewType type) { m_viewType = type; }
-    ResourceViewType GetViewType() const { return m_viewType; }
+    ResourceViewType GetViewType() const override { return m_viewType; }
+    ResourceViewDimension GetDimension() const override { return m_dimension; }
+    Format GetFormat() const override { return m_format; }
 
     void InitializeAsRenderTarget(ID3D12Device* device, ID3D12Resource* resource,
                                  const D3D12_RENDER_TARGET_VIEW_DESC* desc,
@@ -55,6 +57,8 @@ public:
 
 private:
     ResourceViewType m_viewType;
+    Format m_format;
+    ResourceViewDimension m_dimension;
     D3D12_CPU_DESCRIPTOR_HANDLE m_handle;
     ID3D12Resource* m_resource;
     D3D12DescriptorHeap* m_heap;

engine/include/XCEngine/RHI/OpenGL/OpenGLResourceView.h

@@ -46,7 +46,9 @@ public:
         const ResourceViewDesc& desc,
         OpenGLUniformBufferManager* manager);
 
-    ResourceViewType GetViewType() const { return m_viewType; }
+    ResourceViewType GetViewType() const override { return m_viewType; }
+    ResourceViewDimension GetDimension() const override { return m_dimension; }
+    Format GetFormat() const override { return m_format; }
     unsigned int GetFramebuffer() const;
     int32_t GetTextureUnit() const { return m_textureUnit; }
     int32_t GetBindingPoint() const { return m_bindingPoint; }
@@ -55,6 +57,8 @@ public:
 
 private:
     ResourceViewType m_viewType;
+    Format m_format;
+    ResourceViewDimension m_dimension;
     unsigned int m_framebufferID;
     int32_t m_textureUnit;
     int32_t m_bindingPoint;

engine/include/XCEngine/RHI/RHIResourceView.h

@@ -15,6 +15,10 @@ public:
     virtual void* GetNativeHandle() = 0;
 
     virtual bool IsValid() const = 0;
+
+    virtual ResourceViewType GetViewType() const = 0;
+    virtual ResourceViewDimension GetDimension() const = 0;
+    virtual Format GetFormat() const = 0;
 };
 
 } // namespace RHI

engine/src/RHI/D3D12/D3D12ResourceView.cpp

@@ -6,6 +6,8 @@ namespace RHI {
 
 D3D12ResourceView::D3D12ResourceView()
     : m_viewType(ResourceViewType::ShaderResource)
+    , m_format(Format::Unknown)
+    , m_dimension(ResourceViewDimension::Unknown)
     , m_handle({0})
     , m_resource(nullptr)
     , m_heap(nullptr)
@@ -35,6 +37,8 @@ void D3D12ResourceView::InitializeAsRenderTarget(ID3D12Device* device, ID3D12Res
                                                  const D3D12_RENDER_TARGET_VIEW_DESC* desc,
                                                  D3D12DescriptorHeap* heap, uint32_t slotIndex) {
     m_viewType = ResourceViewType::RenderTarget;
+    m_format = desc ? static_cast<Format>(desc->Format) : Format::Unknown;
+    m_dimension = ResourceViewDimension::Texture2D;
     m_resource = resource;
     m_heap = heap;
     m_slotIndex = slotIndex;
@@ -48,6 +52,8 @@ void D3D12ResourceView::InitializeAsDepthStencil(ID3D12Device* device, ID3D12Res
                                                   const D3D12_DEPTH_STENCIL_VIEW_DESC* desc,
                                                   D3D12DescriptorHeap* heap, uint32_t slotIndex) {
     m_viewType = ResourceViewType::DepthStencil;
+    m_format = desc ? static_cast<Format>(desc->Format) : Format::Unknown;
+    m_dimension = ResourceViewDimension::Texture2D;
     m_resource = resource;
     m_heap = heap;
     m_slotIndex = slotIndex;
@@ -61,6 +67,8 @@ void D3D12ResourceView::InitializeAsShaderResource(ID3D12Device* device, ID3D12R
                                                     const D3D12_SHADER_RESOURCE_VIEW_DESC* desc,
                                                     D3D12DescriptorHeap* heap, uint32_t slotIndex) {
     m_viewType = ResourceViewType::ShaderResource;
+    m_format = desc ? static_cast<Format>(desc->Format) : Format::Unknown;
+    m_dimension = desc ? static_cast<ResourceViewDimension>(desc->ViewDimension) : ResourceViewDimension::Unknown;
     m_resource = resource;
     m_heap = heap;
     m_slotIndex = slotIndex;
@@ -74,6 +82,8 @@ void D3D12ResourceView::InitializeAsUnorderedAccess(ID3D12Device* device, ID3D12
                                                      const D3D12_UNORDERED_ACCESS_VIEW_DESC* desc,
                                                      D3D12DescriptorHeap* heap, uint32_t slotIndex) {
     m_viewType = ResourceViewType::UnorderedAccess;
+    m_format = desc ? static_cast<Format>(desc->Format) : Format::Unknown;
+    m_dimension = desc ? static_cast<ResourceViewDimension>(desc->ViewDimension) : ResourceViewDimension::Unknown;
     m_resource = resource;
     m_heap = heap;
     m_slotIndex = slotIndex;
@@ -87,6 +97,8 @@ void D3D12ResourceView::InitializeAsConstantBuffer(ID3D12Device* device, ID3D12R
                                                     const D3D12_CONSTANT_BUFFER_VIEW_DESC* desc,
                                                     D3D12DescriptorHeap* heap, uint32_t slotIndex) {
     m_viewType = ResourceViewType::ConstantBuffer;
+    m_format = Format::Unknown;
+    m_dimension = ResourceViewDimension::Buffer;
     m_resource = resource;
     m_heap = heap;
     m_slotIndex = slotIndex;

engine/src/RHI/OpenGL/OpenGLResourceView.cpp

@@ -12,6 +12,8 @@ namespace RHI {
 
 OpenGLResourceView::OpenGLResourceView()
     : m_viewType(ResourceViewType::RenderTarget)
+    , m_format(Format::Unknown)
+    , m_dimension(ResourceViewDimension::Unknown)
     , m_framebufferID(0)
     , m_textureUnit(-1)
     , m_bindingPoint(-1)
@@ -81,12 +83,13 @@ bool OpenGLResourceView::InitializeAsRenderTarget(
     OpenGLTexture* texture,
     const ResourceViewDesc& desc,
     OpenGLFramebuffer* framebuffer) {
-    (void)desc;
     if (!texture || !framebuffer) {
         return false;
     }
 
     m_viewType = ResourceViewType::RenderTarget;
+    m_format = static_cast<Format>(desc.format);
+    m_dimension = desc.dimension;
     m_texture = texture;
     m_framebuffer = framebuffer;
     m_framebufferID = framebuffer->GetFramebuffer();
@@ -97,12 +100,13 @@ bool OpenGLResourceView::InitializeAsDepthStencil(
     OpenGLTexture* texture,
     const ResourceViewDesc& desc,
     OpenGLFramebuffer* framebuffer) {
-    (void)desc;
     if (!texture || !framebuffer) {
         return false;
     }
 
     m_viewType = ResourceViewType::DepthStencil;
+    m_format = static_cast<Format>(desc.format);
+    m_dimension = desc.dimension;
     m_texture = texture;
     m_framebuffer = framebuffer;
     m_framebufferID = framebuffer->GetFramebuffer();
@@ -123,6 +127,8 @@ bool OpenGLResourceView::InitializeAsShaderResource(
     }
 
     m_viewType = ResourceViewType::ShaderResource;
+    m_format = static_cast<Format>(desc.format);
+    m_dimension = desc.dimension;
     m_texture = texture;
     m_textureUnit = unit;
     m_textureUnitAllocator = allocator;
@@ -144,6 +150,8 @@ bool OpenGLResourceView::InitializeAsUnorderedAccess(
     }
 
     m_viewType = ResourceViewType::UnorderedAccess;
+    m_format = static_cast<Format>(desc.format);
+    m_dimension = desc.dimension;
     m_texture = texture;
     m_textureUnit = unit;
     m_textureUnitAllocator = allocator;
@@ -169,6 +177,8 @@ bool OpenGLResourceView::InitializeAsConstantBuffer(
     }
 
     m_viewType = ResourceViewType::ConstantBuffer;
+    m_format = Format::Unknown;
+    m_dimension = ResourceViewDimension::Buffer;
     m_buffer = buffer;
     m_bindingPoint = bindingPoint;
     m_uniformBufferManager = manager;