mgcrenderstate.mcr

《3D游戏引擎设计》的源码

// Magic Software, Inc.
// http://www.magic-software.com
// Copyright (c) 2000, All Rights Reserved
//
// Source code from Magic Software is supplied under the terms of a license
// agreement and may not be copied or disclosed except in accordance with the
// terms of that agreement.  The various license agreements may be found at
// the Magic Software web site.  This file is subject to the license
//
// RESTRICTED USE SOURCE CODE
// http://www.magic-software.com/License/restricted.pdf

#ifndef MGCRENDERSTATE_MCR
#define MGCRENDERSTATE_MCR

#define MgcDeclareDefaultState(classname) \
    public: \
        static classname* GetDefault () { return ms_spkDefault; } \
    protected: \
        static classname##Ptr ms_spkDefault; \
        friend class _##classname##InitTermDS

#define MgcImplementDefaultState(classname) \
    classname##Ptr classname::ms_spkDefault = 0; \
    class _##classname##InitTermDS \
    { \
    public: \
        _##classname##InitTermDS () \
        { \
            classname::ms_spkDefault = new classname; \
            MgcRenderState::Type eType = \
                classname::ms_spkDefault->GetType(); \
            classname::ms_apkDefault[eType] = classname::ms_spkDefault; \
        } \
        ~_##classname##InitTermDS () \
        { \
            classname::ms_spkDefault = 0; \
        } \
    }; \
    static _##classname##InitTermDS _force##classname##InitTermDS

#define MgcRenderStateCast(classname,spState) \
    (classname*)(MgcRenderState*)spState

#endif