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/*==LICENSE==*
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CyanWorlds.com Engine - MMOG client, server and tools
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Copyright (C) 2011 Cyan Worlds, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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You can contact Cyan Worlds, Inc. by email legal@cyan.com
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or by snail mail at:
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Cyan Worlds, Inc.
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14617 N Newport Hwy
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Mead, WA 99021
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*==LICENSE==*/
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#include "hsTypes.h"
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#include "hsGeometry3.h"
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#include "hsSfxIntenseAlpha.h"
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#include "../plGeometry/hsTriangle3.h"
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hsSfxIntenseAlpha::hsSfxIntenseAlpha()
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: fMinAlpha(0)
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{
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fFlags |= kInclusive;
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}
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hsSfxIntenseAlpha::~hsSfxIntenseAlpha()
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{
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}
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void hsSfxIntenseAlpha::ProcessPreInterpShadeVerts(hsExpander<hsGShadeVertex*>& vList)
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{
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hsScalar oScale = 1.f - fMinAlpha;
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for( vList.First(); vList.More(); vList.Plus() )
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{
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hsGShadeVertex* s = vList.Current();
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hsScalar o = hsMaximum(hsMaximum(s->fShade.r, s->fShade.g), s->fShade.b);
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o *= oScale;
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o += fMinAlpha;
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s->fShade.a *= o;
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}
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}
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void hsSfxIntenseAlpha::Read(hsStream* s)
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{
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fMinAlpha = s->ReadSwapScalar();
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}
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void hsSfxIntenseAlpha::Write(hsStream* s)
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{
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s->WriteSwapScalar(fMinAlpha);
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}
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