OpcodeDecoding: Get vertex size from the loader

Source/Core/Core/FifoPlayer/FifoPlayer.cpp

@@ -55,6 +55,11 @@ public:
 
   OPCODE_CALLBACK(CPState& GetCPState()) { return m_cpmem; }
 
+  OPCODE_CALLBACK(u32 GetVertexSize(u8 vat))
+  {
+    return VertexLoaderBase::GetVertexSize(GetCPState().vtx_desc, GetCPState().vtx_attr[vat]);
+  }
+
   bool m_start_of_primitives = false;
   bool m_end_of_primitives = false;
   bool m_efb_copy = false;

Source/Core/Core/FifoPlayer/FifoRecorder.cpp

@@ -45,6 +45,11 @@ public:
 
   OPCODE_CALLBACK(CPState& GetCPState()) { return m_cpmem; }
 
+  OPCODE_CALLBACK(u32 GetVertexSize(u8 vat))
+  {
+    return VertexLoaderBase::GetVertexSize(GetCPState().vtx_desc, GetCPState().vtx_attr[vat]);
+  }
+
 private:
   void ProcessVertexComponent(CPArray array_index, VertexComponentFormat array_type,
                               u32 component_offset, u32 vertex_size, u16 num_vertices,