src/scenegraph/Scissor.h

   1 /*
   2     Fail game engine
   3     Copyright 2007 Antoine Chavasse <a.chavasse@gmail.com>
   4
   5     This file is part of Fail.
   6
   7     Fail is free software; you can redistribute it and/or modify
   8     it under the terms of the GNU General Public License version 3
   9     as published by the Free Software Foundation.
  10
  11     Fail is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19 #ifndef FAIL_SCENEGRAPH_SCISSOR_H_
  20 #define FAIL_SCENEGRAPH_SCISSOR_H_
  21
  22 #include "core/core.h"
  23 #include "scenegraph/scenegraph_export.h"
  24 #include "ViewPort.h"
  25 #include "math/Rectu32.h"
  26 #include <GL/gl.h>
  27
  28 namespace fail { namespace scenegraph
  29 {
  30         class FLSCENEGRAPH_EXPORT Scissor : public Serializable
  31         {
  32                 public:
  33                         Scissor( const math::Rectu32& rect_ );
  34                         Scissor( const math::Vector2u32& position_, const math::Vector2u32& size_ );
  35                         Scissor( uint32_t left_, uint32_t top_, uint32_t width_, uint32_t height_ );
  36                         Scissor( const Serialization_tag& );
  37
  38                         const math::Rectu32& getRect() const { return m_Rect; }
  39                         math::Rectu32& getRect() { return m_Rect; }
  40                         void setRect( const math::Rectu32& x ) { m_Rect = x; }
  41
  42                         void renderSetup( ViewPort* pViewPort ) const
  43                         {
  44                                 glScissor( m_Rect.left(), pViewPort->getRect().height() - ( m_Rect.top() + m_Rect.height() ),
  45                                                         m_Rect.width(), m_Rect.height() );
  46                                 glEnable( GL_SCISSOR_TEST );
  47                         }
  48
  49                         static void Clear()
  50                         {
  51                                 glDisable( GL_SCISSOR_TEST );
  52                         }
  53
  54                 private:
  55                         template< class C, typename T > friend struct fail::attribute_traits;
  56                         math::Rectu32                   m_Rect;
  57         };
  58 }}
  59
  60 #endif