dolphin/Source/Core/VideoBackends/D3D/GeometryShaderCache.h

// Copyright 2014 Dolphin Emulator Project
// Licensed under GPLv2+
// Refer to the license.txt file included.

#pragma once

#include <d3d11.h>
#include <map>

#include "VideoCommon/GeometryShaderGen.h"

namespace DX11
{

class GeometryShaderCache
{
public:
	static void Init();
	static void Clear();
	static void Shutdown();
	static bool SetShader(u32 primitive_type); // TODO: Should be renamed to LoadShader
	static bool InsertByteCode(const GeometryShaderUid &uid, const void* bytecode, unsigned int bytecodelen);

	static ID3D11GeometryShader* GeometryShaderCache::GetClearGeometryShader();
	static ID3D11GeometryShader* GeometryShaderCache::GetCopyGeometryShader();

	static ID3D11GeometryShader* GetActiveShader() { return last_entry->shader; }
	static ID3D11Buffer* &GetConstantBuffer();

private:
	struct GSCacheEntry
	{
		ID3D11GeometryShader* shader;

		std::string code;

		GSCacheEntry() : shader(nullptr) {}
		void Destroy() { SAFE_RELEASE(shader); }
	};

	typedef std::map<GeometryShaderUid, GSCacheEntry> GSCache;

	static GSCache GeometryShaders;
	static const GSCacheEntry* last_entry;
	static GeometryShaderUid last_uid;
	static const GSCacheEntry pass_entry;

	static UidChecker<GeometryShaderUid, ShaderCode> geometry_uid_checker;
};

}  // namespace DX11