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class RENDER; //render.h
class RENDER_WIN32D3D : public RENDER; //render_wind3d.h
class RENDER_PS3 : public RENDER; //render_ps3.h
class RENDER_XBOX : public RENDER;//render_xbox.h
//client code
RENDER* renderer = null;
#ifdef __WIN32D3D__
#include "render_wind3d.h"
render = new RENDER_WIN32D3D;
#endif
#ifdef __PS3__
#include "render_ps3.h"
render = new RENDER_PS3;
#endif
#ifdef __XBOX__
#include "render_xbox.h"
render = new RENDER_XBOX;
#endif
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//render.h
struct RENDER;
void Render_BeginFrame();
void Render_EndFrame();
//render_wind3d.c
struct RENDER
{
...
};
void Render_BeginFrame(RENDER*){ ... }
void Render_EndFrame(RENDER*){ ... }
//render_ps3.c ºÍ render_xbox.cͬÉÏ£¬Ö»ÊǶÔstruct RENDERºÍÄÇÁ½
//¸öº¯ÊýʵÏÖ²»Ò»Ñù¶øÒÑ¡£
//client code
RENDER renderer = new RENDER;
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