#ifndef _dx11ShaderCompileHelper_h_
#define _dx11ShaderCompileHelper_h_
//-
// ==========================================================================
// Copyright 1995,2006,2008,2011 Autodesk, Inc. All rights reserved.
//
// Use of this software is subject to the terms of the Autodesk
// license agreement provided at the time of installation or download,
// or which otherwise accompanies this software in either electronic
// or hard copy form.
// ==========================================================================
//+

#include <list>

struct ID3D11Device;
struct ID3DX11Effect;
class MString;
class dx11ShaderNode;


/*!
	HLSL shader files come in two flavors: as plain text (.fx) or in binary format (.fxo)
	Since a binary file is a precompiled shader it loads really fast.
	For text files, the shader needs to be compiled at runtime, depending on the optimization
	level and the complexity of the shader this can take quite a while.
	For that reason a caching system was introduced for .fx shader files.

	The cache system is not directly accessible to the dx11shader, instead it can use the
	following interfaces to load/release effects.
*/

namespace CDX11EffectCompileHelper
{
	// Release the effect from the specified node
	void releaseEffect(dx11ShaderNode* node, ID3DX11Effect* effect, const MString& fileName);

	// Build an effect from an external file
	ID3DX11Effect* build(dx11ShaderNode* node, ID3D11Device* device, const MString& fileName, MString &errorLog, bool useStrictness = false);

	// Clone an effect - used for the duplicate operation
	ID3DX11Effect* build(dx11ShaderNode* node, ID3D11Device* device, const MString& fileName, ID3DX11Effect* effectSource, MString &errorLog);

	// Load a compiled effect
	ID3DX11Effect* build(dx11ShaderNode* node, ID3D11Device* device, const void* buffer, unsigned int dataSize, MString &errorLog, bool useStrictness = false);

	// Get the absolute path of an effect file
	MString resolveShaderFileName(const MString& shaderPath, bool* fileExists = NULL);

	// Get the list of the nodes that use the specified shader file
	typedef std::list< dx11ShaderNode* > ShaderNodeList;
	void getNodesUsingEffect(const MString& fileName, ShaderNodeList &nodes);
};

#endif //_dx11ShaderCompilHelper_h_