OgreBlendMode.h

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/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2005 The OGRE Team
Also see acknowledgements in Readme.html

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.
-----------------------------------------------------------------------------
*/
#ifndef __BLENDMODE_H__
#define __BLENDMODE_H__

#include "OgrePrerequisites.h"
#include "OgreColourValue.h"

namespace Ogre {

    enum LayerBlendType
    {
        LBT_COLOUR,
        LBT_ALPHA
    };

    enum LayerBlendOperation {
        LBO_REPLACE,
        LBO_ADD,
        LBO_MODULATE,
        LBO_ALPHA_BLEND

    };

    enum LayerBlendOperationEx {
        LBX_SOURCE1,
        LBX_SOURCE2,
        LBX_MODULATE,
        LBX_MODULATE_X2,
        LBX_MODULATE_X4,
        LBX_ADD,
        LBX_ADD_SIGNED,
        LBX_ADD_SMOOTH,
        LBX_SUBTRACT,
        LBX_BLEND_DIFFUSE_ALPHA,
        LBX_BLEND_TEXTURE_ALPHA,
        LBX_BLEND_CURRENT_ALPHA,
        LBX_BLEND_MANUAL,
        LBX_DOTPRODUCT
    };

    enum LayerBlendSource
    {
        LBS_CURRENT,
        LBS_TEXTURE,
        LBS_DIFFUSE,
        LBS_SPECULAR,
        LBS_MANUAL
    };
    class _OgreExport LayerBlendModeEx
    {
    public:
        LayerBlendType blendType;
        LayerBlendOperationEx operation;
        LayerBlendSource source1;
        LayerBlendSource source2;

        ColourValue colourArg1;
        ColourValue colourArg2;
        Real alphaArg1;
        Real alphaArg2;
        Real factor;

        bool operator==(const LayerBlendModeEx& rhs) const
        {
            if (blendType != rhs.blendType) return false;

            if (blendType == LBT_COLOUR)
            {

                if (operation == rhs.operation &&
                    source1 == rhs.source1 &&
                    source2 == rhs.source2 &&
                    colourArg1 == rhs.colourArg1 &&
                    colourArg2 == rhs.colourArg2 &&
                    factor == rhs.factor)
                {
                    return true;
                }
            }
            else // if (blendType == LBT_ALPHA)
            {
                if (operation == rhs.operation &&
                    source1 == rhs.source1 &&
                    source2 == rhs.source2 &&
                    alphaArg1 == rhs.alphaArg1 &&
                    alphaArg2 == rhs.alphaArg2 &&
                    factor == rhs.factor)
                {
                    return true;
                }
            }
            return false;
        }

        bool operator!=(const LayerBlendModeEx& rhs) const
        {
            return !(*this == rhs);
        }



    };

    enum SceneBlendType
    {
        SBT_TRANSPARENT_ALPHA,
        SBT_TRANSPARENT_COLOUR,
        SBT_ADD,
        SBT_MODULATE
        // TODO : more
    };

    enum SceneBlendFactor
    {
        SBF_ONE,
        SBF_ZERO,
        SBF_DEST_COLOUR,
        SBF_SOURCE_COLOUR,
        SBF_ONE_MINUS_DEST_COLOUR,
        SBF_ONE_MINUS_SOURCE_COLOUR,
        SBF_DEST_ALPHA,
        SBF_SOURCE_ALPHA,
        SBF_ONE_MINUS_DEST_ALPHA,
        SBF_ONE_MINUS_SOURCE_ALPHA

    };
}

#endif

---

Copyright © 2000-2005 by The OGRE Team

This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Sun Feb 12 12:59:41 2006