#ifndef IShaderGraphCompiler_h__
#define IShaderGraphCompiler_h__

#include "shaders/IShaderGraphNode.h"

namespace LifeGraphics
{
	enum IShaderCompilerFlags
	{
		SCF_NONE = 0,
		SCF_SKINNING = 1,
	};

	static int ShaderTypeToChannelCount(IShaderDataType t)
	{
		switch(t)
		{
		case DT_ANY:
			return 0;
		case DT_FLOAT:
			return 1;
		case DT_FLOAT2:
			return 2;
		case DT_FLOAT3:
			return 3;
		case DT_FLOAT4:
			return 4;
		}
		return 0;
	}

	static IShaderDataType MaxType(IShaderDataType t1, IShaderDataType t2)
	{
		return ShaderTypeToChannelCount(t1) > ShaderTypeToChannelCount(t2) ? t1 : t2;
	}

	struct ShaderTextureMapping
	{
		int reg;
		int nodeId;
		String name;
	};
	struct ShaderConstantMapping
	{
		String name;
		IShaderDataType DataType;
		int size;
		int offset;
	};
	struct ShaderConstantTable
	{

	};

	struct ShaderInputInfo
	{
		std::vector<ShaderTextureMapping> Textures;
		void Clear()
		{
			Textures.clear();
		}
	};

	class IShaderGraphCompiler
	{
	public:
		virtual void CompileNode(IShaderGraphNode* rootNode, int flags, String& ps, String& vs, ShaderInputInfo* info) = 0;
	};
}
#endif // IShaderGraphCompiler_h__