refactor: Refactor OpenGL backend to use OpenGLEnums

Use centralized OpenGLEnums.h for enum conversion:
- Remove local ToGL* functions from OpenGLCommandList
- Replace with ToOpenGL() and ToOpenGLClearBuffer() from OpenGLEnums
- Simplify OpenGLTexture, OpenGLBuffer, OpenGLSampler, etc.

engine/src/RHI/OpenGL/OpenGLRenderTargetView.cpp

@@ -1,21 +1,11 @@
 #include "XCEngine/RHI/OpenGL/OpenGLRenderTargetView.h"
+#include "XCEngine/RHI/OpenGL/OpenGLEnums.h"
 #include <glad/glad.h>
 
 namespace XCEngine {
 namespace RHI {
 
-static unsigned int ToGLRenderTargetType(RenderTargetType type) {
-    switch (type) {
-        case RenderTargetType::Texture2D: return GL_TEXTURE_2D;
-        case RenderTargetType::Texture2DArray: return GL_TEXTURE_2D_ARRAY;
-        case RenderTargetType::Texture3D: return GL_TEXTURE_3D;
-        case RenderTargetType::TextureCube: return GL_TEXTURE_CUBE_MAP;
-        case RenderTargetType::TextureCubeArray: return GL_TEXTURE_CUBE_MAP_ARRAY;
-        default: return GL_TEXTURE_2D;
-    }
-}
-
-OpenGLRenderTargetView::OpenGLRenderTargetView() 
+OpenGLRenderTargetView::OpenGLRenderTargetView()
     : m_texture(0)
     , m_framebuffer(0)
     , m_mipLevel(0)
@@ -36,7 +26,7 @@ bool OpenGLRenderTargetView::Initialize(unsigned int texture, const OpenGLRender
     glGenFramebuffers(1, &m_framebuffer);
     glBindFramebuffer(GL_FRAMEBUFFER, m_framebuffer);
 
-    unsigned int target = ToGLRenderTargetType(desc.type);
+    unsigned int target = ToOpenGL(desc.type);
     GLenum attachment = GL_COLOR_ATTACHMENT0;
 
     switch (desc.type) {