Line data    Source code

       1             : 
       2             : /* Copyright (c) 2007-2011, Stefan Eilemann <eile@equalizergraphics.com> 
       3             :  *
       4             :  * This library is free software; you can redistribute it and/or modify it under
       5             :  * the terms of the GNU Lesser General Public License version 2.1 as published
       6             :  * by the Free Software Foundation.
       7             :  *  
       8             :  * This library is distributed in the hope that it will be useful, but WITHOUT
       9             :  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
      10             :  * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
      11             :  * details.
      12             :  * 
      13             :  * You should have received a copy of the GNU Lesser General Public License
      14             :  * along with this library; if not, write to the Free Software Foundation, Inc.,
      15             :  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      16             :  */
      17             : 
      18             : #ifndef EQSERVER_CHANNELUPDATEVISITOR_H
      19             : #define EQSERVER_CHANNELUPDATEVISITOR_H
      20             : 
      21             : #include "compoundVisitor.h" // base class
      22             : #include "types.h"
      23             : 
      24             : #include <eq/fabric/eye.h>         // member
      25             : 
      26             : namespace eq
      27             : {
      28             : namespace fabric
      29             : {
      30             :     class ColorMask;
      31             :     class RenderContext;
      32             : }
      33             : 
      34             : namespace server
      35             : {
      36             :     class Channel;
      37             :     class FrustumData;
      38             :     
      39             :     /** The compound visitor generating the draw tasks for a channel. */
      40             :     class ChannelUpdateVisitor : public CompoundVisitor
      41             :     {
      42             :     public:
      43             :         ChannelUpdateVisitor( Channel* channel, const uint128_t frameID, 
      44             :                               const uint32_t frameNumber );
      45          31 :         virtual ~ChannelUpdateVisitor() {}
      46             : 
      47          93 :         void setEye( const fabric::Eye eye ) { _eye = eye; }
      48             : 
      49             :         /** Visit a non-leaf compound on the down traversal. */
      50             :         virtual VisitorResult visitPre( const Compound* compound );
      51             :         /** Visit a leaf compound. */
      52             :         virtual VisitorResult visitLeaf( const Compound* compound );
      53             :         /** Visit a non-leaf compound on the up traversal. */
      54             :         virtual VisitorResult visitPost( const Compound* compound );
      55             : 
      56          31 :         bool isUpdated() const { return _updated; }
      57             : 
      58             :     private:
      59             :         Channel*        _channel;
      60             :         fabric::Eye     _eye;
      61             :         const uint128_t _frameID;
      62             :         const uint32_t  _frameNumber;
      63             :         bool            _updated;
      64             : 
      65             :         bool _skipCompound( const Compound* compound );
      66             :         void _sendClear( const RenderContext& context );
      67             : 
      68             :         void _updateDraw( const Compound* compound,
      69             :                           const RenderContext& context );
      70             :         void _updateDrawTiles( const Compound* compound,
      71             :                                const RenderContext& context );
      72             :         void _updateDrawFinish( const Compound* compound ) const;
      73             :         void _updateFrameRate( const Compound* compound ) const;
      74             : 
      75             :         uint32_t _getDrawBuffer( const Compound* compound ) const;
      76             :         fabric::ColorMask _getDrawBufferMask( const Compound* compound ) const;
      77             : 
      78             :         void _setupRenderContext( const Compound* compound,
      79             :                                   RenderContext& context );
      80             : 
      81             :         void _updatePostDraw( const Compound* compound, 
      82             :                               const fabric::RenderContext& context );
      83             :         void _updateAssemble( const Compound* compound,
      84             :                               const fabric::RenderContext& context );
      85             :         void _updateReadback( const Compound* compound,
      86             :                               const fabric::RenderContext& context );  
      87             :         void _updateViewStart( const Compound* compound,
      88             :                                const fabric::RenderContext& context );
      89             :         void _updateViewFinish( const Compound* compound,
      90             :                                 const fabric::RenderContext& context );
      91             :     };
      92             : }
      93             : }
      94             : #endif // EQSERVER_CONSTCOMPOUNDVISITOR_H