genesis-3d_engine/Engine/graphicsystem/Camera/RenderPipeline/RenderData.cc

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

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

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****************************************************************************/
#include "stdneb.h"
#include "RenderData.h"
#include "graphicsystem/Material/materialinstance.h"
#include "graphicsystem/Renderable/Renderable.h"
#include "graphicsystem/Camera/RenderPipeline/VisibleNode.h"
#include "foundation/util/stl.h"

namespace Graphic
{
	// ------------------------------------ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ---------------------------------------------------
	template<bool opaque>
	class RenderDataSorter
	{
	public:
		RenderDataSorter(const RenderData* _data)
		{
			data = _data;
		}
		bool operator() (const int& l, const int& r) const;
	private:
		const RenderData* data;
	};
	template<bool opaque>
	bool RenderDataSorter<opaque>::operator() (const int& lIndrex, const int& rIndex) const
	{
		const RenderData& lhs = data[lIndrex];
		const RenderData& rhs = data[rIndex];

		const MaterialInstance* lmat = lhs.renderable->GetMaterial();
		const MaterialInstance* rmat = rhs.renderable->GetMaterial();

		if (lmat->GetRenderQueue().GetQueueIndex() != rmat->GetRenderQueue().GetQueueIndex())
		{
			return lmat->GetRenderQueue().GetQueueIndex() < rmat->GetRenderQueue().GetQueueIndex();
		}


		if (!opaque)
		{
			float lhsOrder = lhs.onwer->distance + lhs.renderable->GetSort();
			float rhsOrder = rhs.onwer->distance + rhs.renderable->GetSort();

			if (lhsOrder != rhsOrder)
			{
				return lhsOrder > rhsOrder;
			}
		}

		if (lmat->GetSort() != rmat->GetSort())
		{
			return lmat->GetSort() < rmat->GetSort();
		}
		if (lmat->GetShaderInstanceID() != rmat->GetShaderInstanceID())
		{
			return lmat->GetShaderInstanceID() < rmat->GetShaderInstanceID();
		}
		if (lmat->GetInstanceID() != rmat->GetInstanceID())
		{
			return lmat->GetInstanceID() < rmat->GetInstanceID();
		}
		
		if (opaque)
		{
			return lhs.onwer->distance < rhs.onwer->distance;
		}
		return lIndrex < rIndex;
	}

	class ScreenDataSorter
	{
	public:
		ScreenDataSorter(const RenderData* _data)
		{
			data = _data;
		}
		bool operator()(const int& lIndrex, const int& rIndex) const;
	private:
		const RenderData* data;
	};
	bool ScreenDataSorter::operator() (const int& lIndrex, const int& rIndex) const
	{
		const RenderData& lhs = data[lIndrex];
		const RenderData& rhs = data[rIndex];
		return lhs.renderable->GetMaterial()->GetRenderQueue().GetQueueIndex() < rhs.renderable->GetMaterial()->GetRenderQueue().GetQueueIndex();
	}

	class DepthSorter
	{
	public:
		DepthSorter(const RenderData* _data)
		{
			data = _data;
		}
		bool operator()(const int& lIndrex, const int& rIndex) const;
	private:
		const RenderData* data;
	};
	bool DepthSorter::operator() (const int& lIndrex, const int& rIndex) const
	{
		const RenderData& lhs = data[lIndrex];
		const RenderData& rhs = data[rIndex];
		
		const MaterialInstance* lmat = lhs.renderable->GetMaterial();
		const MaterialInstance* rmat = rhs.renderable->GetMaterial();

		if (lmat->GetShaderInstanceID() != rmat->GetShaderInstanceID())
		{
			return lmat->GetShaderInstanceID() < rmat->GetShaderInstanceID();
		}
		if (lmat->GetInstanceID() != rmat->GetInstanceID())
		{
			return lmat->GetInstanceID() < rmat->GetInstanceID();
		}

		return lhs.onwer->distance < rhs.onwer->distance;
	}

	const SizeT RenderDataManager::sDefualtSize = 50;
	RenderDataManager::RenderDataManager()
		:mUseFor(Super::Unknown)
		,mCurrNode(NULL)
		,mIsMainCamera(false)
	{

	}

	RenderDataCollection::UseFor RenderDataManager::GetUseFor() const
	{
		return mUseFor;
	}

	void RenderDataManager::Push(Renderable* renderable)
	{
		RenderQueue::QueueType renderQueueType = renderable->GetMaterial()->GetRenderQueue().GetQueueType();
		int partIndex = 0;
		switch ( renderQueueType )
		{
		case RenderQueue::eRQTBackGround:
			{
				partIndex = RenderData::Background;
			}
			break;
		case RenderQueue::eRQTOpaque:
		case RenderQueue::eRQTAlphaTest:
			{
				partIndex = RenderData::Opaque;
			}
			break;
		case RenderQueue::eRQTAlphaBlend:
			{
				partIndex = RenderData::Alpha;
			}
			break;
		case RenderQueue::eRQTGlass:
			{
				if (mIsMainCamera)
				{
					partIndex = RenderData::Glass;
				}
				else
				{
					return;
				}
			}
			break;
		case RenderQueue::eRQParticleDecal:
			{
				if (mIsMainCamera)
				{
					partIndex = RenderData::ParticleDecal;
				}
				else
				{
					return;
				}
			}
			break;
		case RenderQueue::eRQParticlePost:
			{
				if (mIsMainCamera)
				{
					partIndex = RenderData::ParticlePost;
				}
				else
				{
					return;
				}
			}
			break;
		case RenderQueue::eRQTCustomDraw:
			{
				if (mIsMainCamera)
				{
					partIndex = RenderData::Custom;
				}
				else
				{
					return;
				}
			}
		case RenderQueue::eRQTDebugPrimitive:
			{
				partIndex = RenderData::Custom;
			}
			break;
		case RenderQueue::eRQTScreen:
			{		
				if (mIsMainCamera)
				{
					partIndex = RenderData::Screen;
				}
				else
				{
					return;
				}
			}
			break;
		default:
			{
				RenderQueue rq = renderable->GetMaterial()->GetRenderQueue();
				n_warning("unknown render queue(type:%d, sort: %d) of material(%s).", (int)rq.GetQueueType(), (int)rq.GetSort(), renderable->GetMaterial()->GetMaterialID().AsString().AsCharPtr());
				return;
			}

		}
		mSorteCaches[partIndex].PushBack(mRenderDatas.Count());
		RenderData& data = mRenderDatas.PushBack();
		data.onwer = mCurrNode;
		data.renderable = renderable;
	}

	void RenderDataManager::Sort()
	{
		switch(mUseFor)
		{
		case Super::Normal:
			{
				_sort<true>(mSorteCaches[RenderData::Opaque]);
				_sort<false>(mSorteCaches[RenderData::Alpha]);
				if (mSorteCaches->Count())
				{
					_sortScreen(mSorteCaches[RenderData::Screen]);
				}
				break;
			}
		case Super::Shadow:
			{
				_sortDepth(mSorteCaches[RenderData::Opaque]);
				break;
			}
		default:
			break;
		}


	}

	void RenderDataManager::Reset(bool isMain) 
	{
		mRenderDatas.Clear();
		for (int i = 0; i < RenderData::TypeCount; ++i)
		{
			mSorteCaches[i].Clear();
		}
		mIsMainCamera = isMain;
	}


	template<bool Opaque>
	void RenderDataManager::_sort(RenderDataIndexArray& cache)
	{
		RenderDataSorter<Opaque> sorter(mRenderDatas.Begin());
		Util::STL::sort(cache.Begin(), cache.End(), sorter);
	}
	void RenderDataManager::_sortScreen(RenderDataIndexArray& cache)
	{
		ScreenDataSorter sorter(mRenderDatas.Begin());
		Util::STL::sort(cache.Begin(), cache.End(), sorter);
	}
	void RenderDataManager::_sortDepth(RenderDataIndexArray& cache)
	{
		DepthSorter sorter(mRenderDatas.Begin());
		Util::STL::sort(cache.Begin(), cache.End(), sorter);
	}
}