VideoCommon: split VertexLoaderBase from VertexLoader

Source/Core/VideoCommon/VertexLoaderBase.h

@@ -0,0 +1,103 @@
+// Copyright 2014 Dolphin Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <array>
+#include <string>
+
+#include "Common/CommonTypes.h"
+
+#include "VideoCommon/CPMemory.h"
+#include "VideoCommon/DataReader.h"
+#include "VideoCommon/NativeVertexFormat.h"
+
+class VertexLoaderUID
+{
+	std::array<u32, 5> vid;
+	size_t hash;
+public:
+	VertexLoaderUID()
+	{
+	}
+
+	VertexLoaderUID(const TVtxDesc& vtx_desc, const VAT& vat)
+	{
+		vid[0] = vtx_desc.Hex & 0xFFFFFFFF;
+		vid[1] = vtx_desc.Hex >> 32;
+		vid[2] = vat.g0.Hex;
+		vid[3] = vat.g1.Hex;
+		vid[4] = vat.g2.Hex;
+		hash = CalculateHash();
+	}
+
+	bool operator == (const VertexLoaderUID& rh) const
+	{
+		return vid == rh.vid;
+	}
+
+	size_t GetHash() const
+	{
+		return hash;
+	}
+
+private:
+
+	size_t CalculateHash() const
+	{
+		size_t h = -1;
+
+		for (auto word : vid)
+		{
+			h = h * 137 + word;
+		}
+
+		return h;
+	}
+};
+
+namespace std
+{
+template <> struct hash<VertexLoaderUID>
+{
+	size_t operator()(const VertexLoaderUID& uid) const
+	{
+		return uid.GetHash();
+	}
+};
+}
+
+class VertexLoaderBase
+{
+public:
+	static VertexLoaderBase* CreateVertexLoader(const TVtxDesc &vtx_desc, const VAT &vtx_attr);
+	virtual ~VertexLoaderBase() {};
+
+	virtual int RunVertices(int primitive, int count, DataReader src, DataReader dst) = 0;
+
+	virtual bool IsInitialized() = 0;
+
+	// For debugging / profiling
+	void AppendToString(std::string *dest) const;
+
+	virtual std::string GetName() const = 0;
+
+	// per loader public state
+	int m_VertexSize;      // number of bytes of a raw GC vertex
+	PortableVertexDeclaration m_native_vtx_decl;
+	u32 m_native_components;
+
+	// used by VertexLoaderManager
+	NativeVertexFormat* m_native_vertex_format;
+	int m_numLoadedVertices;
+
+protected:
+	VertexLoaderBase(const TVtxDesc &vtx_desc, const VAT &vtx_attr);
+	void SetVAT(const VAT& vat);
+
+	// GC vertex format
+	TVtxAttr m_VtxAttr;  // VAT decoded into easy format
+	TVtxDesc m_VtxDesc;  // Not really used currently - or well it is, but could be easily avoided.
+	VAT m_vat;
+};