src/scenegraph/RenderPass.cpp

   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 #include "scenegraph/RenderPass.h"
  20
  21 using namespace fail;
  22 using namespace fail::scenegraph;
  23
  24 RenderPass::PassList RenderPass::ms_RenderList;
  25
  26 RenderPass::RenderPass( const Pointer< ViewPort >& pViewPort ) :
  27         m_pViewPort( pViewPort ),
  28         m_bClearColorBuffer( false ),
  29         m_bClearDepthBuffer( false ),
  30         m_bClearStencil( false ),
  31         m_StencilClearValue( 0 )
  32 {
  33 }
  34
  35 RenderPass::RenderPass( const Pointer< ViewPort >& pViewPort, const Pointer< Scissor >& pScissor ) :
  36         m_pViewPort( pViewPort ),
  37         m_pScissor( pScissor ),
  38         m_bClearColorBuffer( false ),
  39         m_bClearDepthBuffer( false ),
  40         m_bClearStencil( false ),
  41         m_StencilClearValue( 0 )
  42 {
  43 }
  44
  45 RenderPass::RenderPass( const Serialization_tag& )
  46 {
  47 }
  48
  49 void RenderPass::RenderAll()
  50 {
  51         VertexBuffer::ClearBound();
  52         Frame::ClearBound();
  53
  54         PassList::const_iterator it;
  55         for( it = ms_RenderList.begin(); it != ms_RenderList.end(); ++it )
  56                 ( *it )->render();
  57 }
  58
  59 void RenderPass::ClearAll()
  60 {
  61         PassList::iterator it;
  62         for( it = ms_RenderList.begin(); it != ms_RenderList.end(); ++it )
  63                 ( *it )->clear();
  64
  65         ms_RenderList.clear();
  66 }
  67
  68 void RenderPass::render() const
  69 {
  70         PassList::const_iterator it;
  71         for( it = m_PreRenderList.begin(); it != m_PreRenderList.end(); ++it )
  72                 ( *it )->render();
  73
  74         GLint clearflags = 0;
  75
  76         if( m_bClearColorBuffer )
  77                 clearflags |= GL_COLOR_BUFFER_BIT;
  78         if( m_bClearDepthBuffer )
  79                 clearflags |= GL_DEPTH_BUFFER_BIT;
  80         if( m_bClearStencil )
  81         {
  82                 clearflags |= GL_STENCIL_BUFFER_BIT;
  83                 glClearStencil( m_StencilClearValue );
  84         }
  85
  86         if( clearflags )
  87                 glClear( clearflags );
  88
  89         if( m_RenderMap.empty() && m_TextMap.empty() )
  90                 return;
  91
  92         m_pViewPort->renderSetup();
  93
  94         if( m_pScissor )
  95                 m_pScissor->renderSetup( m_pViewPort );
  96         else
  97                 Scissor::Clear();
  98
  99         math::Matrix44f CameraMtx;
 100         m_pViewPort->getCameraMatrix( CameraMtx );
 101
 102         GLfloat mcam[16];
 103
 104         mcam[0] = CameraMtx.v1().x();
 105         mcam[1] = CameraMtx.v1().z();
 106         mcam[2] = -CameraMtx.v1().y();
 107         mcam[3] = CameraMtx.v1().w();
 108
 109         mcam[4] = CameraMtx.v2().x();
 110         mcam[5] = CameraMtx.v2().z();
 111         mcam[6] = -CameraMtx.v2().y();
 112         mcam[7] = CameraMtx.v2().w();
 113
 114         mcam[8] = CameraMtx.v3().x();
 115         mcam[9] = CameraMtx.v3().z();
 116         mcam[10] = -CameraMtx.v3().y();
 117         mcam[11] = CameraMtx.v3().w();
 118
 119         mcam[12] = CameraMtx.v4().x();
 120         mcam[13] = CameraMtx.v4().z();
 121         mcam[14] = -CameraMtx.v4().y();
 122         mcam[15] = CameraMtx.v4().w();
 123
 124         glMatrixMode( GL_MODELVIEW );
 125
 126         // Just for testing purpose, a proper light system will of course need to
 127         // be created later.
 128         glEnable( GL_LIGHT0 );
 129
 130         glLoadMatrixf( mcam );
 131         GLfloat pos[] = { 0.f, -1.f, 0.f, 0.f };
 132         glLightfv( GL_LIGHT0, GL_POSITION, pos );
 133
 134         RenderMap::const_iterator mapit;
 135         for( mapit = m_RenderMap.begin(); mapit != m_RenderMap.end(); ++mapit )
 136         {
 137                 mapit->first.pMaterial->renderSetup();
 138
 139                 // I has a bucket
 140                 const Bucket& MahBucket = mapit->second;
 141                 Bucket::const_iterator it;
 142                 for( it = MahBucket.begin(); it != MahBucket.end(); ++it )
 143                 {
 144                         // Render the fucking thing
 145                         if( ( *it )->getpFrame()->needSetup() )
 146                         {
 147                                 glLoadMatrixf( mcam );
 148                                 //glLoadIdentity();
 149                                 ( *it )->getpFrame()->renderSetup();
 150                         }
 151
 152                         ( *it )->getpGeometry()->render();
 153                 }
 154         }
 155
 156         TextMap::const_iterator textit;
 157         for( textit = m_TextMap.begin(); textit != m_TextMap.end(); ++textit )
 158         {
 159                 textit->second->getpMaterial()->renderSetup();
 160                 if( textit->second->getpFrame()->needSetup() )
 161                 {
 162                         glLoadMatrixf( mcam );
 163                 //      glLoadIdentity();
 164                         textit->second->getpFrame()->renderSetup();
 165                 }
 166
 167                 if( textit->second->getClip() == 0.f )
 168                         textit->second->getpFont()->drawText( textit->second->getTextString() );
 169                 else
 170                         textit->second->getpFont()->drawTextRightClip( textit->second->getTextString(), textit->second->getClip() );
 171         }
 172
 173         for( it = m_PostRenderList.begin(); it != m_PostRenderList.end(); ++it )
 174                 ( *it )->render();
 175 }
 176
 177 void RenderPass::clear()
 178 {
 179         m_RenderMap.clear();
 180         m_TextMap.clear();
 181
 182         PassList::iterator it;
 183         for( it = m_PreRenderList.begin(); it != m_PreRenderList.end(); ++it )
 184                 ( *it )->clear();
 185
 186         for( it = m_PostRenderList.begin(); it != m_PostRenderList.end(); ++it )
 187                 ( *it )->clear();
 188
 189         m_PreRenderList.clear();
 190         m_PostRenderList.clear();
 191 }