canvas/source/tools/surfaceproxymanager.cxx

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  27
  28 // MARKER(update_precomp.py): autogen include statement, do not remove
  29 #include "precompiled_canvas.hxx"
  30
  31 #include <canvas/rendering/isurfaceproxymanager.hxx>
  32 #include <canvas/rendering/isurfaceproxy.hxx>
  33 #include "surfaceproxy.hxx"
  34
  35 namespace canvas
  36 {
  37
  38     //////////////////////////////////////////////////////////////////////////////////
  39     // SurfaceProxyManager
  40     //////////////////////////////////////////////////////////////////////////////////
  41
  42     class SurfaceProxyManager : public ISurfaceProxyManager
  43     {
  44     public:
  45
  46         SurfaceProxyManager( const IRenderModuleSharedPtr pRenderModule ) :
  47             mpPageManager( new PageManager(pRenderModule) )
  48         {
  49         }
  50
  51         /** the whole idea is build around the concept that you create
  52             some arbitrary buffer which contains the image data and
  53             tell the texture manager about it.  from there on you can
  54             draw this image using any kind of graphics api you want.
  55             in the technical sense we allocate some space in local
  56             videomemory or AGP memory which will be filled on demand,
  57             which means if there exists any rendering operation that
  58             needs to read from this memory location.  this method
  59             creates a logical hardware surface object which uses the
  60             given color buffer as the image source.  internally this
  61             texture may be distributed to several real hardware
  62             surfaces.
  63         */
  64         virtual ISurfaceProxySharedPtr createSurfaceProxy( const IColorBufferSharedPtr& pBuffer ) const
  65         {
  66             // not much to do for now, simply allocate a new surface
  67             // proxy from our internal pool and initialize this thing
  68             // properly. we *don't* create a hardware surface for now.
  69             return SurfaceProxySharedPtr(new SurfaceProxy(pBuffer,mpPageManager));
  70         }
  71
  72     private:
  73         PageManagerSharedPtr mpPageManager;
  74     };
  75
  76     //////////////////////////////////////////////////////////////////////////////////
  77     // createSurfaceProxyManager
  78     //////////////////////////////////////////////////////////////////////////////////
  79
  80     ISurfaceProxyManagerSharedPtr createSurfaceProxyManager( const IRenderModuleSharedPtr& rRenderModule )
  81     {
  82         return ISurfaceProxyManagerSharedPtr(
  83             new SurfaceProxyManager(
  84                 rRenderModule));
  85     }
  86 }