CWE-ou-minkata/Sources/Plasma/PubUtilLib/plScene/plPostEffectMod.cpp

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

You can contact Cyan Worlds, Inc. by email legal@cyan.com
 or by snail mail at:
      Cyan Worlds, Inc.
      14617 N Newport Hwy
      Mead, WA   99021

*==LICENSE==*/

#include "hsTypes.h"
#include "plPostEffectMod.h"
#include "plPageTreeMgr.h"
#include "plSceneNode.h"
#include "plRenderRequest.h"

#include "plPipeline/plRenderTarget.h"

#include "plMessage/plRenderRequestMsg.h"
#include "plMessage/plAnimCmdMsg.h"
#include "plMessage/plRenderMsg.h"

#include "pnMessage/plRefMsg.h"

#include "pnSceneObject/plSceneObject.h"
#include "plDrawable.h"
#include "plPipeline.h"
#include "plgDispatch.h"
#include "hsResMgr.h"


plPostEffectMod::plPostEffectMod()
:	fHither(1.f),
	fYon(100.f),
	fFovX(hsScalarPI * 0.25f),
	fFovY(hsScalarPI * 0.25f * 0.75f),
	fPageMgr(nil),
	fRenderTarget(nil),
	fRenderRequest(nil)
{
	fDefaultW2C = hsMatrix44::IdentityMatrix();
	fDefaultC2W = hsMatrix44::IdentityMatrix();

	ISetupRenderRequest();
}

plPostEffectMod::~plPostEffectMod()
{
	IDestroyRenderRequest();
}

void plPostEffectMod::ISetupRenderRequest()
{
	UInt32 rtFlags = 0;

	// If we go to rendering to sub-window, we'll want to explicitly set width and height
	UInt32 width = 0;
	UInt32 height = 0;

	UInt32 colorDepth = 0;
	UInt32 zDepth = 0;
	UInt32 stencilDepth = 0;

	fRenderRequest = TRACKED_NEW plRenderRequest;
	UInt32 renderState = plPipeline::kRenderNormal
		| plPipeline::kRenderNoProjection
		| plPipeline::kRenderNoLights
		| plPipeline::kRenderClearDepth;
	fRenderRequest->SetRenderState(renderState);

	fRenderRequest->SetDrawableMask(plDrawable::kNormal);
	fRenderRequest->SetSubDrawableMask(plDrawable::kSubAllTypes);

	fRenderRequest->SetPerspective();

	fRenderRequest->SetRenderTarget(fRenderTarget);

	fPageMgr = TRACKED_NEW plPageTreeMgr;

	fRenderRequest->SetPageTreeMgr(fPageMgr);

	fRenderRequest->SetPriority(1.f);

	IUpdateRenderRequest();
}
void		plPostEffectMod::EnableLightsOnRenderRequest( void )
{
	fRenderRequest->SetRenderState( fRenderRequest->GetRenderState() & ~plPipeline::kRenderNoLights );
}

void plPostEffectMod::IDestroyRenderRequest()
{
	delete fRenderTarget;
	fRenderTarget = nil;
	delete fRenderRequest;
	fRenderRequest = nil;
	delete fPageMgr;
	fPageMgr = nil;
}

void plPostEffectMod::IRegisterForRenderMsg(hsBool on)
{
	if( on )
		plgDispatch::Dispatch()->RegisterForExactType(plRenderMsg::Index(), GetKey());
	else
		plgDispatch::Dispatch()->UnRegisterForExactType(plRenderMsg::Index(), GetKey());
}

void plPostEffectMod::ISetEnable(hsBool on)
{
	if( on )
	{
		IRegisterForRenderMsg(true);
		fState.SetBit(kEnabled);
	}
	else
	{
		IRegisterForRenderMsg(false);
		fState.ClearBit(kEnabled);
	}
}

hsBool plPostEffectMod::IIsEnabled() const
{
	return /*GetTarget() &&*/ !fPageMgr->Empty() && fState.IsBitSet(kEnabled);
}

hsBool plPostEffectMod::IEval(double secs, hsScalar del, UInt32 dirty)
{
	return false;
}

void plPostEffectMod::IUpdateRenderRequest()
{
	fRenderRequest->SetHither(fHither); 
	fRenderRequest->SetYon(fYon); 

	fRenderRequest->SetFovX(fFovX);
	fRenderRequest->SetFovY(fFovY);

	if( GetTarget() )
	{
		hsMatrix44 w2c = GetTarget()->GetWorldToLocal();
		hsMatrix44 c2w = GetTarget()->GetLocalToWorld();

		int i;
		for( i = 0; i < 4; i++ )
		{
			w2c.fMap[2][i] *= -1.f;
			c2w.fMap[i][2] *= -1.f;
		}
		w2c.NotIdentity();
		c2w.NotIdentity();

		fRenderRequest->SetCameraTransform(w2c, c2w);
	}
	else
		fRenderRequest->SetCameraTransform( fDefaultW2C, fDefaultC2W );
//		fRenderRequest->SetCameraTransform(hsMatrix44::IdentityMatrix(), hsMatrix44::IdentityMatrix());
}

// If translating from a scene object, send WorldToLocal() and LocalToWorld(), in that order
void	plPostEffectMod::SetWorldToCamera( hsMatrix44 &w2c, hsMatrix44 &c2w )
{
	int i;


	fDefaultW2C = w2c;
	fDefaultC2W = c2w;

	for( i = 0; i < 4; i++ )
	{
		fDefaultW2C.fMap[2][i] *= -1.f;
		fDefaultC2W.fMap[i][2] *= -1.f;
	}
	fDefaultW2C.NotIdentity();
	fDefaultC2W.NotIdentity();
}

void	plPostEffectMod::GetDefaultWorldToCamera( hsMatrix44 &w2c, hsMatrix44 &c2w )
{
	w2c = fDefaultW2C;
	c2w = fDefaultC2W;
}

void plPostEffectMod::ISubmitRequest()
{
	hsAssert(fState.IsBitSet(kEnabled), "Submitting request when not active");
	// No target is now valid...
//	hsAssert(GetTarget(), "Submitting request without target loaded");

	IUpdateRenderRequest();

	plRenderRequestMsg* req = TRACKED_NEW plRenderRequestMsg(GetKey(), fRenderRequest);
	plgDispatch::MsgSend(req);
}

void plPostEffectMod::IAddToPageMgr(plSceneNode* node)
{
	fPageMgr->AddNode(node);
}

void plPostEffectMod::IRemoveFromPageMgr(plSceneNode* node)
{
	fPageMgr->RemoveNode(node);
}

#include "plProfile.h"
plProfile_CreateTimer("PostEffect", "RenderSetup", PostEffect);

hsBool plPostEffectMod::MsgReceive(plMessage* msg)
{
	plRenderMsg* rend = plRenderMsg::ConvertNoRef(msg);
	if( rend && IIsEnabled() )
	{
		plProfile_BeginLap(PostEffect, this->GetKey()->GetUoid().GetObjectName());
		ISubmitRequest();
		plProfile_EndLap(PostEffect, this->GetKey()->GetUoid().GetObjectName());

		return true;
	}
	plAnimCmdMsg* anim = plAnimCmdMsg::ConvertNoRef(msg);
	if( anim )
	{
		if( anim->Cmd(plAnimCmdMsg::kContinue) )
			ISetEnable(true);
		else if( anim->Cmd(plAnimCmdMsg::kStop) )
			ISetEnable(false);
		else if( anim->Cmd(plAnimCmdMsg::kToggleState) )
			ISetEnable(!fState.IsBitSet(kEnabled));

		return true;
	}
	plGenRefMsg* ref = plGenRefMsg::ConvertNoRef(msg);
	if( ref )
	{
		switch( ref->fType )
		{
		case kNodeRef:
			if( ref->GetContext() & (plRefMsg::kOnCreate|plRefMsg::kOnRequest) )
			{
				IAddToPageMgr(plSceneNode::ConvertNoRef(ref->GetRef()));
			}
			else if( ref->GetContext() & plRefMsg::kOnReplace )
			{
				IRemoveFromPageMgr(plSceneNode::ConvertNoRef(ref->GetOldRef()));
				IAddToPageMgr(plSceneNode::ConvertNoRef(ref->GetRef()));
			}
			else if( ref->GetContext() & (plRefMsg::kOnRemove | plRefMsg::kOnDestroy) )
			{
				IRemoveFromPageMgr(plSceneNode::ConvertNoRef(ref->GetRef()));
			}
			break;
		}
		return true;
	}

	return plSingleModifier::MsgReceive(msg);
}

void plPostEffectMod::Read(hsStream* s, hsResMgr* mgr)
{
	plSingleModifier::Read(s, mgr);

	fState.Read(s);

#if 0 // FORCE ENABLE ON LOAD - ONLY FOR DEBUGGING
	ISetEnable(true);
#endif // FORCE ENABLE ON LOAD - ONLY FOR DEBUGGING
	
	fHither = s->ReadSwapScalar();
	fYon = s->ReadSwapScalar();
	fFovX = s->ReadSwapScalar();
	fFovY = s->ReadSwapScalar();

	fNodeKey = mgr->ReadKeyNotifyMe(s, TRACKED_NEW plGenRefMsg(GetKey(), plRefMsg::kOnCreate, -1, kNodeRef), plRefFlags::kPassiveRef);

	fDefaultW2C.Read( s );
	fDefaultC2W.Read( s );

	IUpdateRenderRequest();
}

void plPostEffectMod::Write(hsStream* s, hsResMgr* mgr)
{
	plSingleModifier::Write(s, mgr);

	fState.Write(s);
	
	s->WriteSwapScalar(fHither);
	s->WriteSwapScalar(fYon);
	s->WriteSwapScalar(fFovX);
	s->WriteSwapScalar(fFovY);

	mgr->WriteKey(s, fNodeKey);

	fDefaultW2C.Write( s );
	fDefaultC2W.Write( s );
}

const plViewTransform& plPostEffectMod::GetViewTransform()
{
	IUpdateRenderRequest();
	return fRenderRequest->GetViewTransform();
}