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

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

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

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****************************************************************************/
#include "stdneb.h"
#include "DeferredLightingRenderPipeline.h"
#include "graphicsystem/Camera/RenderPipeline/RenderPipelineManager.h"
#include "graphicsystem/Renderable/GraphicRenderer.h"
#include "GraphicSystem.h"


namespace Graphic
{


	__ImplementClass(DeferredLightingRenderPipeline,'DLRP',Core::RefCounted)

		DeferredLightingRenderPipeline::DeferredLightingRenderPipeline()
	{
		mLightPass = DeferredLightingPass::Create();
		mLightPass->Init();

		//empty
	}

	DeferredLightingRenderPipeline::~DeferredLightingRenderPipeline()
	{
		mLightPass = NULL;
	}

	void DeferredLightingRenderPipeline::Render(PipelineParamters& params)
	{
		setGlobalShaderParam(params);
		_RenderGBuffer(params);
		renderLightLitMap(params);
		_RenderLightMap(params);		
		renderCustomized(params);
		_RenderFinalScene(params);
		renderMain( params);
	}

	void DeferredLightingRenderPipeline::_RenderGBuffer(PipelineParamters& params)
	{
		GraphicRenderer::ResetCache();
		const GPtr<Camera>& camera = params.m_camera;
		const GPtr<RenderToTexture>& depthRT = camera->GetDepthMap();
		const GPtr<RenderToTexture>& normalRT = camera->GetDeferredNormalMap();
		const GPtr<RenderToTexture>& paramRT = camera->GetDeferredParamMap();

		n_assert(depthRT.isvalid());
		n_assert(normalRT.isvalid());
		n_assert(paramRT.isvalid());



		GraphicSystem* gs = GraphicSystem::Instance();
		if (gs)
		{
			gs->SetRenderTarget(normalRT, 0, RenderBase::RenderTarget::ClearAll);
			gs->SetRenderTarget(depthRT, 1, RenderBase::RenderTarget::ClearAll);
			gs->SetRenderTarget(paramRT, 2, RenderBase::RenderTarget::ClearAll);
			m_currentRT = normalRT;
		}

		renderRenderableList(params,RenderData::Opaque, eGBuffer, NULL);

		if (gs)
		{
			gs->SetRenderTarget(dummyhandle, 1, RenderBase::RenderTarget::ClearAll);
			gs->SetRenderTarget(dummyhandle, 2, RenderBase::RenderTarget::ClearAll);
		}

	}

	void DeferredLightingRenderPipeline::_RenderLightMap(PipelineParamters& params)
	{
		GraphicRenderer::ResetCache();
		mLightPass->RenderActiveLights(params);
		m_currentRT = params.m_camera->GetDeferredLightMap();
	}

	void DeferredLightingRenderPipeline::_RenderFinalScene(PipelineParamters& params)
	{
		const GPtr<Camera>& camera = params.m_camera;
		if(!camera->IsRenderNormal())
			return;
		GraphicRenderer::ResetCache();
		const GPtr<RenderToTexture>& rtt= camera->GetRenderToTexture();
		if (rtt.isvalid())
		{
			GraphicSystem::Instance()->SetRenderTarget(rtt->GetTargetHandle(),0,RenderBase::RenderTarget::ClearAll);
			m_currentRT = rtt;
		}
		else
		{
			GraphicSystem::Instance()->SetRenderTarget(dummyhandle,0,RenderBase::RenderTarget::ClearAll);
			m_currentRT = NULL;
		}
		renderRenderableList(params, RenderData::Background, eForward, NULL);//û<>еƹ<D0B5><C6B9>Ķ<EFBFBD><C4B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ⱦ<EFBFBD><C8BE>
		renderRenderableList(params, RenderData::Opaque, eDeferredLightPass, NULL);

		_RenderOtherObjs(params);
	}

	void DeferredLightingRenderPipeline::_RenderOtherObjs(PipelineParamters& params)
	{
		const GPtr<Camera>& camera = params.m_camera;
		if(!camera->IsRenderNormal())
			return;
		GraphicRenderer::ResetCache();
		setCommonLights(params);//<2F><><EFBFBD>ù<EFBFBD><C3B9>еĵƹ⣬<C6B9><E2A3AC>ƽ<EFBFBD>й⣬<D0B9><E2A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
		renderRenderableListWidthLight(params, RenderData::Alpha, NULL);

		renderCustomObjs(params);
	}

}