CWE-ou-minkata/Sources/Plasma/PubUtilLib/plSurface/plGrassShaderMod.cpp

/*==LICENSE==*

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*==LICENSE==*/
#include "plGrassShaderMod.h"

#include "hsTimer.h"
#include "hsResMgr.h"
#include "plgDispatch.h"

#include "../pnKeyedObject/plUoid.h"

//#include "../pnSceneObject/plDrawInterface.h"

#include "../pnMessage/plObjRefMsg.h"
#include "../pnMessage/plTimeMsg.h"
#include "../plMessage/plMatRefMsg.h"
#include "../plMessage/plAgeLoadedMsg.h"
#include "../plMessage/plLayRefMsg.h"

#include "../plDrawable/plAccessGeometry.h"
#include "../plDrawable/plAccessSpan.h"
#include "../plDrawable/plAccessVtxSpan.h"

#include "../plSurface/hsGMaterial.h"
#include "../plSurface/plShader.h"
#include "../plSurface/plLayer.h"

void plGrassWave::Write(hsStream *s)
{
	s->WriteSwapScalar(fDistX);
	s->WriteSwapScalar(fDistY);
	s->WriteSwapScalar(fDistZ);
	s->WriteSwapScalar(fDirX);
	s->WriteSwapScalar(fDirY);
	s->WriteSwapScalar(fSpeed);
}

void plGrassWave::Read(hsStream *s)
{
	fDistX = s->ReadSwapScalar();
	fDistY = s->ReadSwapScalar();
	fDistZ = s->ReadSwapScalar();
	fDirX = s->ReadSwapScalar();
	fDirY = s->ReadSwapScalar();
	fSpeed = s->ReadSwapScalar();
}

/////////////////////////////////////////////////////////////////////////////////////////////

plGrassShaderMod::~plGrassShaderMod()
{
	plgDispatch::Dispatch()->UnRegisterForExactType(plEvalMsg::Index(), GetKey());
	plgDispatch::Dispatch()->UnRegisterForExactType(plInitialAgeStateLoadedMsg::Index(), GetKey());
	plgDispatch::Dispatch()->UnRegisterForExactType(plAgeLoadedMsg::Index(), GetKey());
}

void plGrassShaderMod::ResetWaves()
{
	int i;
	for (i = 0; i < kNumWaves; i++)
	{
		fWaves[i].fDistX = 0.F;
		fWaves[i].fDistY = 0.F;
		fWaves[i].fDistZ = 0.F;
		fWaves[i].fDirX = 0.F;
		fWaves[i].fDirY = 0.F;
		fWaves[i].fSpeed = 0.F;
	}
	RefreshWaves();
}

void plGrassShaderMod::RefreshWaves()
{
	IRefreshWaves(fVShader);
}

void plGrassShaderMod::IRefreshWaves(plShader *vShader)
{
	// Dynamic params, set by artist
	vShader->SetVector(plGrassVS::kWaveDistX, fWaves[0].fDistX, fWaves[1].fDistX, fWaves[2].fDistX, fWaves[3].fDistX);
	vShader->SetVector(plGrassVS::kWaveDistY, fWaves[0].fDistY, fWaves[1].fDistY, fWaves[2].fDistY, fWaves[3].fDistY);
	vShader->SetVector(plGrassVS::kWaveDistZ, fWaves[0].fDistZ, fWaves[1].fDistZ, fWaves[2].fDistZ, fWaves[3].fDistZ);
	vShader->SetVector(plGrassVS::kWaveDirX, fWaves[0].fDirX, fWaves[1].fDirX, fWaves[2].fDirX, fWaves[3].fDirX);
	vShader->SetVector(plGrassVS::kWaveDirY, fWaves[0].fDirY, fWaves[1].fDirY, fWaves[2].fDirY, fWaves[3].fDirY);
	vShader->SetVector(plGrassVS::kWaveSpeed, fWaves[0].fSpeed, fWaves[1].fSpeed, fWaves[2].fSpeed, fWaves[3].fSpeed);
}

void plGrassShaderMod::AddTarget(plSceneObject *object)
{
	fTarget = object;
}

void plGrassShaderMod::RemoveTarget(plSceneObject *object)
{
	fTarget = nil;
}

hsBool plGrassShaderMod::MsgReceive(plMessage *msg)
{
	plGenRefMsg* refMsg = plGenRefMsg::ConvertNoRef(msg);
	if (refMsg)
	{
		if (refMsg->GetContext() & (plRefMsg::kOnCreate | plRefMsg::kOnRequest | plRefMsg::kOnReplace))
		{
			switch (refMsg->fType)
			{
			case kRefGrassVS:
				fVShader = plShader::ConvertNoRef(refMsg->GetRef());
				break;
			case kRefGrassPS:
				fPShader = plShader::ConvertNoRef(refMsg->GetRef());
				break;
			case kRefMaterial:
				fMaterial = hsGMaterial::ConvertNoRef(refMsg->GetRef());
				break;
			default:
				break;
			}
		}
		else
		{	
			switch (refMsg->fType)
			{
			case kRefGrassVS:
				fVShader = nil;
				break;
			case kRefGrassPS:
				fPShader = nil;
				break;
			case kRefMaterial:
				fMaterial = nil;
				break;
			default:
				break;
			}
		}
		return true;
	}

	plAgeLoadedMsg* ageLoaded = plAgeLoadedMsg::ConvertNoRef(msg);
	if( (ageLoaded && ageLoaded->fLoaded) || plInitialAgeStateLoadedMsg::ConvertNoRef(msg) )
	{
		ISetupShaders();
		return true;
	}

	return plModifier::MsgReceive(msg);
}

void plGrassShaderMod::Write(hsStream *stream, hsResMgr *mgr)
{
	plModifier::Write(stream, mgr);

	mgr->WriteKey(stream, fMaterial ? fMaterial->GetKey() : nil);

	int i;
	for (i = 0; i < kNumWaves; i++)
		fWaves[i].Write(stream);
}

void plGrassShaderMod::Read(hsStream *stream, hsResMgr *mgr)
{
	plModifier::Read(stream, mgr);

	mgr->ReadKeyNotifyMe(stream, TRACKED_NEW plGenRefMsg(GetKey(), plRefMsg::kOnRequest, 0, kRefMaterial), plRefFlags::kActiveRef);

	int i;
	for (i = 0; i < kNumWaves; i++)
		fWaves[i].Read(stream);

	plgDispatch::Dispatch()->RegisterForExactType(plEvalMsg::Index(), GetKey());
	plgDispatch::Dispatch()->RegisterForExactType(plInitialAgeStateLoadedMsg::Index(), GetKey());
	plgDispatch::Dispatch()->RegisterForExactType(plAgeLoadedMsg::Index(), GetKey());
}

hsBool plGrassShaderMod::IEval(double secs, hsScalar del, UInt32 dirty)
{
	if (fVShader)
	{
		fVShader->SetVector(plGrassVS::kAppConsts, float(hsTimer::GetSysSeconds()), 0.f, 0.f, 0.f);
	}

	return TRUE;
}

void plGrassShaderMod::ISetupShaders()
{
	if (!fVShader)
	{
		plShader* vShader = TRACKED_NEW plShader;
		char buff[256];
		sprintf(buff, "%s_GrassVS", GetKey()->GetName());
		hsgResMgr::ResMgr()->NewKey(buff, vShader, GetKey()->GetUoid().GetLocation());
		vShader->SetIsPixelShader(false);
		vShader->SetInputFormat(1);
		vShader->SetOutputFormat(0);

		vShader->SetNumConsts(plGrassVS::kNumConsts);
		vShader->SetVector(plGrassVS::kNumericConsts, 0.f, 0.5f, 1.f, 2.f);
		vShader->SetVector(plGrassVS::kPiConsts, 1.f / (8.f*hsScalarPI*4.f*4.f), hsScalarPI/2.f, hsScalarPI, hsScalarPI*2.f);
		vShader->SetVector(plGrassVS::kSinConsts, -1.f/6.f, 1.f/120.f, -1.f/5040.f, 1.f/362880.f);

		IRefreshWaves(vShader);

		vShader->SetNumPipeConsts(1);
		vShader->SetPipeConst(0, plPipeConst::kLocalToNDC, plGrassVS::kLocalToNDC);

		vShader->SetDecl(plShaderTable::Decl(plShaderID::vs_GrassShader));
		hsgResMgr::ResMgr()->SendRef(vShader->GetKey(), TRACKED_NEW plGenRefMsg(GetKey(), plRefMsg::kOnRequest, 0, kRefGrassVS), plRefFlags::kActiveRef);
	}

	if (!fPShader)
	{
		plShader* pShader = TRACKED_NEW plShader;
		char buff[256];
		sprintf(buff, "%s_GrassPS", GetKey()->GetName());
		hsgResMgr::ResMgr()->NewKey(buff, pShader, GetKey()->GetUoid().GetLocation());
		pShader->SetIsPixelShader(true);
		pShader->SetNumConsts(0);
		pShader->SetInputFormat(0);
		pShader->SetOutputFormat(0);
		pShader->SetDecl(plShaderTable::Decl(plShaderID::ps_GrassShader));
		hsgResMgr::ResMgr()->SendRef(pShader->GetKey(), TRACKED_NEW plGenRefMsg(GetKey(), plRefMsg::kOnRequest, 0, kRefGrassPS), plRefFlags::kActiveRef);
	}

	plLayer* layer = plLayer::ConvertNoRef(fMaterial->GetLayer(0)->BottomOfStack());
	if (layer && (layer->GetVertexShader() != fVShader))
	{
		plLayRefMsg* refMsg = TRACKED_NEW plLayRefMsg(layer->GetKey(), plRefMsg::kOnCreate, 0, plLayRefMsg::kVertexShader);	
		hsgResMgr::ResMgr()->SendRef(fVShader->GetKey(), refMsg, plRefFlags::kActiveRef);
	}
	if (layer && (layer->GetPixelShader() != fPShader))
	{
		plLayRefMsg* refMsg = TRACKED_NEW plLayRefMsg(layer->GetKey(), plRefMsg::kOnCreate, 0, plLayRefMsg::kPixelShader);	
		hsgResMgr::ResMgr()->SendRef(fPShader->GetKey(), refMsg, plRefFlags::kActiveRef);
	}
}