Fix OpenGL render target binding composition

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

@@ -14,6 +14,7 @@ class OpenGLVertexArray;
 class OpenGLShader;
 class OpenGLTexture;
 class OpenGLPipelineState;
+class OpenGLFramebuffer;
 
 enum class PrimitiveType {
     Points,
@@ -193,6 +194,7 @@ public:
     void DrawIndexed(uint32_t indexCount, uint32_t instanceCount, uint32_t startIndex, int32_t baseVertex, uint32_t startInstance) override;
 
 private:
+    void ReleaseComposedFramebuffer();
     void EnsureInternalVertexArrayBound();
     void DisableConfiguredVertexAttributes();
 
@@ -203,6 +205,7 @@ private:
     OpenGLPipelineState* m_currentPipelineState;
     std::vector<unsigned int> m_enabledVertexAttributes;
     OpenGLShader* m_currentShader;
+    OpenGLFramebuffer* m_composedFramebuffer;
 };
 
 } // namespace RHI

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

@@ -18,8 +18,9 @@ enum class FramebufferAttachmentType {
 
 struct FramebufferAttachment {
     unsigned int texture = 0;
+    unsigned int target = 0;
     int mipLevel = 0;
-    int layer = 0;
+    int layer = -1;
     FramebufferAttachmentType type = FramebufferAttachmentType::Color;
     uint32_t format = 0;
 };
@@ -71,4 +72,4 @@ private:
 };
 
 } // namespace RHI
-} // namespace XCEngine
+} // namespace XCEngine

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

@@ -1,5 +1,6 @@
 #pragma once
 
+#include "XCEngine/RHI/OpenGL/OpenGLFramebuffer.h"
 #include "XCEngine/RHI/RHIResourceView.h"
 #include "XCEngine/RHI/RHITypes.h"
 
@@ -63,6 +64,8 @@ public:
     uint64_t GetBufferOffset() const { return m_bufferOffset; }
     uint32_t GetBufferSize() const { return m_bufferSize; }
     uint32_t GetBufferStride() const { return m_bufferStride; }
+    const FramebufferAttachment& GetFramebufferAttachment() const { return m_framebufferAttachment; }
+    const OpenGLTexture* GetTextureResource() const { return m_texture; }
 
 private:
     ResourceViewType m_viewType;
@@ -76,6 +79,7 @@ private:
     OpenGLFramebuffer* m_framebuffer;
     OpenGLTextureUnitAllocator* m_textureUnitAllocator;
     OpenGLUniformBufferManager* m_uniformBufferManager;
+    FramebufferAttachment m_framebufferAttachment;
     uint64_t m_bufferOffset;
     uint32_t m_bufferSize;
     uint32_t m_bufferStride;