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

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*==LICENSE==*/

#include "hsTypes.h"
#include "plLayerShadowBase.h"

///////////////////////////////////////////////////////////////////////////
plLayerLightBase::plLayerLightBase()
:   fDirty(true)
{
    fOwnedChannels = kState
                | kAmbientColor
                | kPreshadeColor;

    fState = TRACKED_NEW hsGMatState;
    fState->Reset();
    
    fAmbientColor = TRACKED_NEW hsColorRGBA;
    fAmbientColor->Set(0,0,0,1.f);

    fPreshadeColor = TRACKED_NEW hsColorRGBA;
    fPreshadeColor->Set(0,0,0,1.f);
}

plLayerLightBase::~plLayerLightBase()
{
}

plLayerInterface* plLayerLightBase::Attach(plLayerInterface* prev)
{
    fDirty = true;
    return plLayerInterface::Attach(prev);
}

uint32_t plLayerLightBase::Eval(double secs, uint32_t frame, uint32_t ignore)
{
    uint32_t ret = plLayerInterface::Eval(secs, frame, ignore);
    if( fUnderLay )
    {
        if( fDirty || (ret & kState) )
        {
            *fState = fUnderLay->GetState();

            uint32_t blend = fState->fBlendFlags;

            fState->fBlendFlags &= ~hsGMatState::kBlendMask;

            switch( blend )
            {
            case hsGMatState::kBlendAlpha:
                fState->fBlendFlags |= hsGMatState::kBlendAddColorTimesAlpha;
                break;
            default:
                fState->fBlendFlags |= hsGMatState::kBlendAdd;
                break;
            }

            fState->fZFlags |= hsGMatState::kZNoZWrite;

            fState->fShadeFlags |= hsGMatState::kShadeIgnoreVtxIllum;

            ret |= kState | kAmbientColor;

            fDirty = false;
        }
    }
    return ret;
}

///////////////////////////////////////////////////////////////////////////
plLayerShadowBase::plLayerShadowBase()
:   fDirty(true)
{
    fOwnedChannels = kState
                | kAmbientColor
                | kPreshadeColor;

    fState = TRACKED_NEW hsGMatState;
    fState->Reset();
    
    fAmbientColor = TRACKED_NEW hsColorRGBA;
    fAmbientColor->Set(0,0,0,1.f);

    fPreshadeColor = TRACKED_NEW hsColorRGBA;
    fPreshadeColor->Set(0,0,0,1.f);
}

plLayerShadowBase::~plLayerShadowBase()
{
}

plLayerInterface* plLayerShadowBase::Attach(plLayerInterface* prev)
{
    fDirty = true;
    return plLayerInterface::Attach(prev);
}

uint32_t plLayerShadowBase::Eval(double secs, uint32_t frame, uint32_t ignore)
{
    uint32_t ret = plLayerInterface::Eval(secs, frame, ignore);
    if( fUnderLay )
    {
        if( fDirty || (ret & kState) )
        {
            *fState = fUnderLay->GetState();
            fState->fBlendFlags &= ~hsGMatState::kBlendMask;
            //WHITE
            fState->fBlendFlags |= hsGMatState::kBlendAlpha;

            fState->fZFlags |= hsGMatState::kZNoZWrite;

            fState->fShadeFlags |= hsGMatState::kShadeIgnoreVtxIllum;

            ret |= kState | kAmbientColor | kPreshadeColor;

            fDirty = false;
        }
    }

    return ret;
}