genesis-3d_engine/Engine/graphicsystem/Material/MaterialPass.cc

/****************************************************************************
Copyright (c) 2011-2013,WebJet Business Division,CYOU

http://www.genesis-3d.com.cn

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****************************************************************************/
#include "stdneb.h"
#include "MaterialPass.h"
#include "foundation/math/scalar.h"
#include "foundation/util/stl.h"
#include "graphicsystem/Material/Material.h"
#include "shadercompiler/ShaderMarcro.h"
namespace Graphic
{



	struct MatParamBindingSort : public std::binary_function<MatParamBinding&, MatParamBinding&, std::size_t>
	{
		bool operator() (const MatParamBinding& lhs, const MatParamBinding& rhs) const
		{
			return lhs.bindIndex < rhs.bindIndex;
		}
	};
	__ImplementClass(MaterialPass,'GRMP',Core::RefCounted);
	__ImplementClass(ShaderParamBindingMap,'SPBM', Core::RefCounted);
	//------------------------------------------------------------------------
	ShaderParamBindingMap::ShaderParamBindingMap()
	{
		m_ShaderBindingList.SetSize( SCT_COUNT );
		m_GlobalBinding.SetSize( SCT_COUNT );
		m_LocalBinding.SetSize( SCT_COUNT );
		m_GlobaBingdingInfos.SetSize(SCT_COUNT);
	}

	inline void _set_info(MatParamBindings& global_sct, IndexT& index, int& end_, int enum_)
	{
		while(index < global_sct.Size() && global_sct[index].bindIndex < enum_)
		{
			++index;
		}
		end_ = index;//Math::n_min(index, global_sct.Size());
	}

	void ShaderParamBindingMap::Setup()
	{
		for ( IndexT sct = SCT_VS; sct < SCT_COUNT; ++sct )
		{
			MatParamBindings& global_sct = m_GlobalBinding[sct];
			GlobalBindingInfo& info = m_GlobaBingdingInfos[sct];
			Util::CustomSortArray<MatParamBinding, MatParamBindingSort>(global_sct);

			IndexT index = 0;
			_set_info(global_sct, index, info.MatCommonEnd, eGShaderMatCommonEnd);
			_set_info(global_sct, index, info.MatCustomEnd, eGShaderMatCustomEnd);
			_set_info(global_sct, index, info.VecCommonEnd, eGShaderVecCommonEnd);
			_set_info(global_sct, index, info.VecCustomEnd, eGShaderVecCustomEnd);

		}
	}

	//------------------------------------------------------------------------
	ShaderParamBindingMap::~ShaderParamBindingMap()
	{

	}
	//------------------------------------------------------------------------
	MaterialPass::MaterialPass()
	{
		
	}
	MaterialPass::~MaterialPass()
	{
		m_renderStateObject = 0;
		m_pShaderMarcro = NULL;
	}

	void MaterialPass::Prepare(const SizeT count)
	{
		m_ShaderParamBindingMap.Reserve(count);
	}

	void MaterialPass::Clone(const GPtr<MaterialPass>& from)
	{
		m_GPUProgramHandle = from->GetGPUProgramHandle();
		m_ShaderParamBindingMap = from->GetShaderParamBindingMap();
		m_name = from->m_name;
		//copy renderstate
		if (from->GetRenderStateObject().isvalid())
		{
			m_renderStateObject = RenderBase::RenderStateDesc::Create();
			m_renderStateObject->Setup();
			m_renderStateObject->SetBlendState(from->GetRenderStateObject()->GetBlendState());
			m_renderStateObject->SetDepthAndStencilState(from->GetRenderStateObject()->GetDepthAndStencilState());
			m_renderStateObject->SetSamplerState(from->GetRenderStateObject()->GetSamplerState());
			m_renderStateObject->SetRasterizerState(from->GetRenderStateObject()->GetRasterizerState());
		}
		
		m_bGlobalParamUsage = from->m_bGlobalParamUsage;

		m_pShaderMarcro     = ShaderProgramCompiler::ShaderMarcro::Create();
		m_pShaderMarcro->Clone(from->GetShaderMarcro());
		
	}

	//------------------------------------------------------------------------
	void MaterialPass::_BuildBindingMap(Material* mat)
	{
		n_assert(mat);
		
		SizeT nCount = m_ShaderParamBindingMap.Size();

		for (IndexT i = 0; i < nCount; ++i)
		{
			const GPtr<ShaderParamBindingMap>& pBindingMap = m_ShaderParamBindingMap.ValueAtIndex(i);
			const uint& shaderMask = m_ShaderParamBindingMap.KeyAtIndex(i);
			ShaderParamBindingList& shaderBindingList = pBindingMap->m_ShaderBindingList;
			BindingMap& globalBinding = pBindingMap->m_GlobalBinding;
			BindingMap& localBinding = pBindingMap->m_LocalBinding;

			GlobalMaterialParam* g_GlobalMaterialParam = Material::GetGlobalMaterialParams();
			const GlobalShaderParamMap& globalShaderParamMap = g_GlobalMaterialParam->GetGlobalShaderParamMap();

			const MaterialParamList& localMatParamList = mat->GetParamList();

			for ( IndexT sct = SCT_VS; sct < SCT_COUNT; ++sct )
			{
				ShaderParamList& rigisterList = shaderBindingList[sct];
				MatParamBindings& global_sct = globalBinding[sct];
				MatParamBindings& local_sct = localBinding[sct];

				// <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>ֺͼĴ<CDBC><C4B4><EFBFBD>λ<EFBFBD>õIJ<C3B5>ѯ<EFBFBD><D1AF>
				Util::Dictionary<Util::String, int> RegQuery;
				for ( IndexT iReg = 0; iReg < rigisterList.Size(); ++iReg )
				{
					ShaderParam& sp = rigisterList[iReg];
					RegQuery.Add( sp.GetName(), sp.GetRegister() );
				}

				// <20><><EFBFBD>Ȱ<EFBFBD><C8B0><EFBFBD>ȫ<EFBFBD>ֱ<EFBFBD>
				for ( IndexT globalindex = 0; globalindex < globalShaderParamMap.Size(); ++globalindex)
				{
					GlobalShaderParam& globalSP = globalShaderParamMap[globalindex];
					IndexT findIndex = RegQuery.FindIndex( globalSP.m_name );
					if ( findIndex != InvalidIndex )
					{
						MatParamBinding binding;
						binding.Regiter = RegQuery.ValueAtIndex(findIndex);
						binding.bindIndex = globalindex;
						global_sct.Append( binding );
						SetGlobalParamInfo(shaderMask, globalindex, true);
					}
				}

				// <20>󶨱<EFBFBD><F3B6A8B1>ر<EFBFBD>
				for ( IndexT localIndex = 0; localIndex < localMatParamList.Size(); ++localIndex )
				{
					MaterialParam* matParam = localMatParamList[localIndex];
					n_assert(matParam);
					IndexT findIndex = RegQuery.FindIndex( matParam->GetName() );

					if ( findIndex != InvalidIndex )
					{
						MatParamBinding binding;
						binding.Regiter = RegQuery.ValueAtIndex(findIndex);
						binding.bindIndex = localIndex;
						local_sct.Append( binding );
					}
				}

			}
			pBindingMap->Setup();
		}

		
	}


}