implement vertex descriptors & draw

src/Cafe/HW/Latte/Renderer/Metal/MetalMemoryManager.h

@@ -1,22 +1,33 @@
 #pragma once
 
+#include <Metal/Metal.hpp>
+
 #include "Cafe/HW/Latte/ISA/LatteReg.h"
 
+struct MetalBufferAllocation
+{
+    void* data;
+    uint32 bufferIndex;
+    size_t bufferOffset;
+};
+
 class MetalMemoryManager
 {
 public:
-    MetalMemoryManager() = default;
+    MetalMemoryManager(class MetalRenderer* metalRenderer) : m_mtlr{metalRenderer} {}
 
-    void* GetTextureUploadBuffer(size_t size)
+    MTL::Buffer* GetBuffer(uint32 bufferIndex)
     {
-        if (m_textureUploadBuffer.size() < size)
-        {
-            m_textureUploadBuffer.resize(size);
-        }
-
-        return m_textureUploadBuffer.data();
+        return m_buffers[bufferIndex];
     }
 
+    void* GetTextureUploadBuffer(size_t size);
+
+    MetalBufferAllocation GetBufferAllocation(size_t size);
+
 private:
+    class MetalRenderer* m_mtlr;
+
     std::vector<uint8> m_textureUploadBuffer;
+    std::vector<MTL::Buffer*> m_buffers;
 };