genesis-3d_engine/Engine/app/particlefeature/components/particlerenderobject.cc

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

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

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
****************************************************************************/
#include "stdneb.h"
#include "particlefeature/components/particlerenderobject.h"
#include "particlefeature/components/particlerendercomponent.h"
#include "addons/particles/particletarget.h"
#include "app/basegamefeature/managers/timemanager.h"
#include "app/appframework/actor.h"

namespace App
{
	using namespace Graphic;
	using namespace Particles;
	__ImplementClass(ParticleRenderObject,'PROB',AppRenderObject)

		ParticleRenderObject::ParticleRenderObject()
	{

	}
	ParticleRenderObject::~ParticleRenderObject()
	{

	}
	void ParticleRenderObject::AddToCollection(Graphic::RenderDataCollection* collection, const Graphic::RenderConfig* renderConfig)
	{
		getOwner()->NeedUpdate();
		Super::AddToCollection(collection, renderConfig);
	}
	void ParticleRenderObject::setShaderMask(Graphic::Renderable* pRenderable, const Graphic::RenderConfig* renderConfig)
	{
		ParticleRenderComponent* particleRC = getOwner();
		n_assert( particleRC );
		particleRC->SetShaderMask();
	}
	void ParticleRenderObject::Render(const Graphic::Renderable* renderable, Graphic::RenderPassType passType, const Graphic::Material* customizedMaterial)
	{
		n_assert(renderable);
		const RenderableType* particlerenderable = renderable->cast_fast<RenderableType>();		

		ParticleRenderComponent* particleRC = getOwner();
		n_assert( particleRC );

		bool bSetTrans = particleRC->IsSetTransParam();

		const Graphic::Material* material = (NULL == customizedMaterial) ? renderable->GetMaterial() : customizedMaterial;

		const ParticleRenderComponent::RenderData* renderData = particleRC->GetRenderData( particlerenderable->GetResourceIndex() );



		if (renderData && renderData->mPrimitiveHandle.IsValid() )
		{

			GlobalMaterialParam* pGMP = Material::GetGlobalMaterialParams();

			Util::Array<Math::matrix44> getMats;
			Util::Array<Math::float4> getColors;
			ushort mParType;
			Math::matrix44 gModleMaterix;

			gModleMaterix = Math::matrix44::identity();
			if(renderData->mPartType == ParticleTarget::GPU)
			{
				gModleMaterix = particleRC->GetActor()->GetWorldTransform();
				Graphic::Camera* camera = particleRC->_getCurrentCamera();
				const Math::float4& upVector4 = camera->GetTransform().get_yaxis();
				const Math::float4& cameraPos4 = camera->GetTransform().get_position(); 
				const Math::float4& derivedPos4 = particleRC->GetActor()->GetWorldPosition();
				Math::float4 dirVec4 = cameraPos4 - derivedPos4;
				Math::float4 rightVec4 = Math::float4::cross3(upVector4,dirVec4);

				Math::matrix44 vp = camera->GetViewProjTransform();
				gModleMaterix = Math::matrix44::multiply(vp,gModleMaterix);
				particleRC->GetParticleSystem()->SetShaderParam();
				pGMP->SetVectorParam(eGShaderParticleUpVec,Math::float4::normalize(upVector4));
				pGMP->SetVectorParam(eGShaderParticleRightVec,Math::float4::normalize(rightVec4));
			}
			if (renderData->mPartType == ParticleTarget::Mesh
				|| renderData->mPartType == ParticleTarget::Decal)
			{
				particleRC->GetTargetInfo( mParType, getMats, getColors);
				if (getMats.Size() > 0)
				{
					gModleMaterix = getMats[0];
				}
			}

			if ( renderData->mPartType == ParticleTarget::Mesh )
			{
				SizeT curcycle = 0;
				SizeT possize = getMats.Size();
				while ( curcycle < possize )
				{	
					gModleMaterix = getMats[curcycle];
					pGMP->SetMatrixParam(eGShaderMatM, gModleMaterix);

					pGMP->SetVectorParam(eGShaderParticleMeshColor,getColors[curcycle]);
					if (passType && material->GetTech()->IsTemplateTech())
					{
						particlerenderable->RenderForward(passType, renderData->mPrimitiveHandle, customizedMaterial);
					}
					else
					{
						particlerenderable->RenderForward(eForward, renderData->mPrimitiveHandle, customizedMaterial);			
					}

					curcycle++;
				}
			}
			else
			{

				pGMP->SetMatrixParam(eGShaderMatM,gModleMaterix);
				pGMP->SetVectorParam(eGShaderParticleMeshColor,Math::float4(1.0f,1.0f,1.0f,1.0f));
				if (passType && material->GetTech()->IsTemplateTech())
				{
					particlerenderable->RenderForward(passType, renderData->mPrimitiveHandle, customizedMaterial);
				}
				else
				{
					particlerenderable->RenderForward(eForward, renderData->mPrimitiveHandle, customizedMaterial);	

				}
			}
		}
	}
}