[150] | 1 | /*
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| 2 | -----------------------------------------------------------------------------
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| 3 | This source file is part of OGRE
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| 4 | (Object-oriented Graphics Rendering Engine)
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| 5 | For the latest info, see http://www.ogre3d.org/
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| 6 |
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| 7 | Copyright (c) 2000-2005 The OGRE Team
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| 8 | Also see acknowledgements in Readme.html
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| 9 |
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| 10 | This program is free software; you can redistribute it and/or modify it under
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| 11 | the terms of the GNU Lesser General Public License as published by the Free Software
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| 12 | Foundation; either version 2 of the License, or (at your option) any later
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| 13 | version.
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| 14 |
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| 15 | This program is distributed in the hope that it will be useful, but WITHOUT
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| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
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| 18 |
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| 19 | You should have received a copy of the GNU Lesser General Public License along with
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| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to
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| 22 | http://www.gnu.org/copyleft/lesser.txt.
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| 23 | -----------------------------------------------------------------------------
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| 24 | */
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| 25 | #include "OgreStableHeaders.h"
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| 26 | // RenderSystem implementation
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| 27 | // Note that most of this class is abstract since
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| 28 | // we cannot know how to implement the behaviour without
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| 29 | // being aware of the 3D API. However there are a few
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| 30 | // simple functions which can have a base implementation
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| 31 |
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| 32 | #include "OgreRenderSystem.h"
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| 33 |
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| 34 | #include "OgreRoot.h"
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| 35 | #include "OgreViewport.h"
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| 36 | #include "OgreException.h"
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| 37 | #include "OgreRenderTarget.h"
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| 38 | #include "OgreRenderWindow.h"
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| 39 | #include "OgreMeshManager.h"
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| 40 | #include "OgreMaterial.h"
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| 41 | #include "OgreTimer.h"
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| 42 |
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| 43 | namespace Ogre {
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| 44 |
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| 45 | const PlaneList Renderable::msDummyPlaneList; // FIX ME: temporary
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| 46 |
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| 47 | //-----------------------------------------------------------------------
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| 48 | RenderSystem::RenderSystem()
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| 49 | {
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| 50 | mActiveViewport = 0;
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| 51 | mActiveRenderTarget = NULL;
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| 52 | mTextureManager = 0;
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| 53 | mCapabilities = 0;
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| 54 | mVSync = true;
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| 55 | mWBuffer = false;
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| 56 |
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| 57 |
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| 58 | // This means CULL clockwise vertices, i.e. front of poly is counter-clockwise
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| 59 | // This makes it the same as OpenGL and other right-handed systems
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| 60 | mCullingMode = CULL_CLOCKWISE;
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| 61 | mInvertVertexWinding = false;
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| 62 |
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| 63 | // instanciate RenderSystemCapabilities
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| 64 | mCapabilities = new RenderSystemCapabilities();
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| 65 |
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| 66 | #ifdef GTP_VISIBILITY_MODIFIED_OGRE
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| 67 | mColour[0] = mColour[1] = mColour[2] = mColour[3] = 255;
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| 68 | #endif // GTP_VISIBILITY_MODIFIED_OGRE
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| 69 | }
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| 70 |
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| 71 | //-----------------------------------------------------------------------
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| 72 | RenderSystem::~RenderSystem()
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| 73 | {
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| 74 | shutdown();
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| 75 | }
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| 76 | //-----------------------------------------------------------------------
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| 77 | void RenderSystem::_initRenderTargets(void)
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| 78 | {
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| 79 |
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| 80 | // Init stats
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| 81 | for(
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| 82 | RenderTargetMap::iterator it = mRenderTargets.begin();
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| 83 | it != mRenderTargets.end();
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| 84 | ++it )
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| 85 | {
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| 86 | it->second->resetStatistics();
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| 87 | }
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| 88 |
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| 89 | }
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| 90 | //-----------------------------------------------------------------------
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| 91 | void RenderSystem::_updateAllRenderTargets(void)
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| 92 | {
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| 93 | // Update all in order of priority
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| 94 | // This ensures render-to-texture targets get updated before render windows
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| 95 | RenderTargetPriorityMap::iterator itarg, itargend;
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| 96 | itargend = mPrioritisedRenderTargets.end();
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| 97 | for( itarg = mPrioritisedRenderTargets.begin(); itarg != itargend; ++itarg )
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| 98 | {
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| 99 | if( itarg->second->isActive() && itarg->second->isAutoUpdated())
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| 100 | itarg->second->update();
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| 101 | }
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| 102 | }
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| 103 | //-----------------------------------------------------------------------
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| 104 | RenderWindow* RenderSystem::initialise(bool autoCreateWindow, const String& windowTitle)
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| 105 | {
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| 106 | // Have I been registered by call to Root::setRenderSystem?
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| 107 | /** Don't do this anymore, just allow via Root
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| 108 | RenderSystem* regPtr = Root::getSingleton().getRenderSystem();
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| 109 | if (!regPtr || regPtr != this)
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| 110 | // Register self - library user has come to me direct
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| 111 | Root::getSingleton().setRenderSystem(this);
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| 112 | */
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| 113 |
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| 114 |
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| 115 | // Subclasses should take it from here
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| 116 | // They should ALL call this superclass method from
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| 117 | // their own initialise() implementations.
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| 118 |
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| 119 | return 0;
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| 120 | }
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| 121 | //---------------------------------------------------------------------------------------------
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| 122 | void RenderSystem::destroyRenderWindow(const String& name)
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| 123 | {
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| 124 | destroyRenderTarget(name);
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| 125 | }
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| 126 | //---------------------------------------------------------------------------------------------
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| 127 | void RenderSystem::destroyRenderTexture(const String& name)
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| 128 | {
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| 129 | destroyRenderTarget(name);
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| 130 | }
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| 131 | //---------------------------------------------------------------------------------------------
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| 132 | void RenderSystem::destroyRenderTarget(const String& name)
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| 133 | {
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| 134 | RenderTarget* rt = detachRenderTarget(name);
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| 135 | delete rt;
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| 136 | }
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| 137 | //---------------------------------------------------------------------------------------------
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| 138 | void RenderSystem::attachRenderTarget( RenderTarget &target )
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| 139 | {
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| 140 | assert( target.getPriority() < OGRE_NUM_RENDERTARGET_GROUPS );
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| 141 |
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| 142 | mRenderTargets.insert( RenderTargetMap::value_type( target.getName(), &target ) );
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| 143 | mPrioritisedRenderTargets.insert(
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| 144 | RenderTargetPriorityMap::value_type(target.getPriority(), &target ));
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| 145 | }
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| 146 |
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| 147 | //---------------------------------------------------------------------------------------------
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| 148 | RenderTarget * RenderSystem::getRenderTarget( const String &name )
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| 149 | {
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| 150 | RenderTargetMap::iterator it = mRenderTargets.find( name );
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| 151 | RenderTarget *ret = NULL;
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| 152 |
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| 153 | if( it != mRenderTargets.end() )
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| 154 | {
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| 155 | ret = it->second;
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| 156 | }
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| 157 |
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| 158 | return ret;
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| 159 | }
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| 160 |
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| 161 | //---------------------------------------------------------------------------------------------
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| 162 | RenderTarget * RenderSystem::detachRenderTarget( const String &name )
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| 163 | {
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| 164 | RenderTargetMap::iterator it = mRenderTargets.find( name );
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| 165 | RenderTarget *ret = NULL;
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| 166 |
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| 167 | if( it != mRenderTargets.end() )
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| 168 | {
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| 169 | ret = it->second;
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| 170 |
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| 171 | /* Remove the render target from the priority groups. */
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| 172 | RenderTargetPriorityMap::iterator itarg, itargend;
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| 173 | itargend = mPrioritisedRenderTargets.end();
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| 174 | for( itarg = mPrioritisedRenderTargets.begin(); itarg != itargend; ++itarg )
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| 175 | {
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| 176 | if( itarg->second == ret ) {
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| 177 | mPrioritisedRenderTargets.erase( itarg );
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| 178 | break;
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| 179 | }
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| 180 | }
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| 181 |
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| 182 | mRenderTargets.erase( it );
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| 183 | }
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| 184 |
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| 185 | return ret;
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| 186 | }
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| 187 | //-----------------------------------------------------------------------
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| 188 | Viewport* RenderSystem::_getViewport(void)
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| 189 | {
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| 190 | return mActiveViewport;
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| 191 | }
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| 192 | //-----------------------------------------------------------------------
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| 193 | void RenderSystem::_setTextureUnitSettings(size_t texUnit, TextureUnitState& tl)
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| 194 | {
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| 195 | // This method is only ever called to set a texture unit to valid details
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| 196 | // The method _disableTextureUnit is called to turn a unit off
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| 197 |
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| 198 | // Texture name
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| 199 | if (tl.isBlank())
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| 200 | {
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| 201 | _setTexture(texUnit, true, StringUtil::BLANK);
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| 202 | }
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| 203 | else
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| 204 | {
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| 205 | _setTexture(texUnit, true, tl.getTextureName());
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| 206 | }
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| 207 |
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| 208 | // Set texture coordinate set
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| 209 | _setTextureCoordSet(texUnit, tl.getTextureCoordSet());
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| 210 |
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| 211 | // Set texture layer filtering
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| 212 | _setTextureUnitFiltering(texUnit,
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| 213 | tl.getTextureFiltering(FT_MIN),
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| 214 | tl.getTextureFiltering(FT_MAG),
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| 215 | tl.getTextureFiltering(FT_MIP));
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| 216 |
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| 217 | // Set texture layer filtering
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| 218 | _setTextureLayerAnisotropy(texUnit, tl.getTextureAnisotropy());
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| 219 |
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| 220 | // Set blend modes
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| 221 | // Note, colour before alpha is important
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| 222 | _setTextureBlendMode(texUnit, tl.getColourBlendMode());
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| 223 | _setTextureBlendMode(texUnit, tl.getAlphaBlendMode());
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| 224 |
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| 225 | // Texture addressing mode
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| 226 | _setTextureAddressingMode(texUnit, tl.getTextureAddressingMode() );
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| 227 |
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| 228 | // Set texture effects
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| 229 | TextureUnitState::EffectMap::iterator effi;
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| 230 | // Iterate over new effects
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| 231 | bool anyCalcs = false;
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| 232 | for (effi = tl.mEffects.begin(); effi != tl.mEffects.end(); ++effi)
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| 233 | {
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| 234 | switch (effi->second.type)
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| 235 | {
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| 236 | case TextureUnitState::ET_ENVIRONMENT_MAP:
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| 237 | if (effi->second.subtype == TextureUnitState::ENV_CURVED)
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| 238 | {
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| 239 | _setTextureCoordCalculation(texUnit, TEXCALC_ENVIRONMENT_MAP);
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| 240 | anyCalcs = true;
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| 241 | }
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| 242 | else if (effi->second.subtype == TextureUnitState::ENV_PLANAR)
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| 243 | {
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| 244 | _setTextureCoordCalculation(texUnit, TEXCALC_ENVIRONMENT_MAP_PLANAR);
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| 245 | anyCalcs = true;
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| 246 | }
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| 247 | else if (effi->second.subtype == TextureUnitState::ENV_REFLECTION)
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| 248 | {
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| 249 | _setTextureCoordCalculation(texUnit, TEXCALC_ENVIRONMENT_MAP_REFLECTION);
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| 250 | anyCalcs = true;
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| 251 | }
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| 252 | else if (effi->second.subtype == TextureUnitState::ENV_NORMAL)
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| 253 | {
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| 254 | _setTextureCoordCalculation(texUnit, TEXCALC_ENVIRONMENT_MAP_NORMAL);
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| 255 | anyCalcs = true;
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| 256 | }
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| 257 | break;
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| 258 | case TextureUnitState::ET_SCROLL:
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| 259 | case TextureUnitState::ET_ROTATE:
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| 260 | case TextureUnitState::ET_TRANSFORM:
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| 261 | break;
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| 262 | case TextureUnitState::ET_PROJECTIVE_TEXTURE:
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| 263 | _setTextureCoordCalculation(texUnit, TEXCALC_PROJECTIVE_TEXTURE,
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| 264 | effi->second.frustum);
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| 265 | anyCalcs = true;
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| 266 | break;
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| 267 | }
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| 268 | }
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| 269 | // Ensure any previous texcoord calc settings are reset if there are now none
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| 270 | if (!anyCalcs)
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| 271 | {
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| 272 | _setTextureCoordCalculation(texUnit, TEXCALC_NONE);
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| 273 | _setTextureCoordSet(texUnit, tl.getTextureCoordSet());
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| 274 | }
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| 275 |
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| 276 | // Change tetxure matrix
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| 277 | _setTextureMatrix(texUnit, tl.getTextureTransform());
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| 278 |
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| 279 |
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| 280 | }
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| 281 | //-----------------------------------------------------------------------
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| 282 | void RenderSystem::_disableTextureUnit(size_t texUnit)
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| 283 | {
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| 284 | _setTexture(texUnit, false, "");
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| 285 | _setTextureMatrix(texUnit, Matrix4::IDENTITY);
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| 286 | }
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| 287 | //---------------------------------------------------------------------
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| 288 | void RenderSystem::_disableTextureUnitsFrom(size_t texUnit)
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| 289 | {
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| 290 | for (size_t i = texUnit; i < mCapabilities->getNumTextureUnits(); ++i)
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| 291 | {
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| 292 | _disableTextureUnit(i);
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| 293 | }
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| 294 | }
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| 295 | //-----------------------------------------------------------------------
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| 296 | void RenderSystem::_setTextureUnitFiltering(size_t unit, FilterOptions minFilter,
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| 297 | FilterOptions magFilter, FilterOptions mipFilter)
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| 298 | {
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| 299 | _setTextureUnitFiltering(unit, FT_MIN, minFilter);
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| 300 | _setTextureUnitFiltering(unit, FT_MAG, magFilter);
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| 301 | _setTextureUnitFiltering(unit, FT_MIP, mipFilter);
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| 302 | }
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| 303 | //-----------------------------------------------------------------------
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| 304 | CullingMode RenderSystem::_getCullingMode(void) const
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| 305 | {
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| 306 | return mCullingMode;
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| 307 | }
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| 308 | //-----------------------------------------------------------------------
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| 309 | bool RenderSystem::getWaitForVerticalBlank(void) const
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| 310 | {
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| 311 | return mVSync;
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| 312 | }
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| 313 | //-----------------------------------------------------------------------
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| 314 | void RenderSystem::setWaitForVerticalBlank(bool enabled)
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| 315 | {
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| 316 | mVSync = enabled;
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| 317 | }
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| 318 | bool RenderSystem::getWBufferEnabled(void) const
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| 319 | {
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| 320 | return mWBuffer;
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| 321 | }
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| 322 | //-----------------------------------------------------------------------
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| 323 | void RenderSystem::setWBufferEnabled(bool enabled)
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| 324 | {
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| 325 | mWBuffer = enabled;
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| 326 | }
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| 327 | //-----------------------------------------------------------------------
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| 328 | void RenderSystem::shutdown(void)
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| 329 | {
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| 330 | // Remove all the render targets.
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| 331 | // (destroy primary target last since others may depend on it)
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| 332 | RenderTarget* primary = 0;
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| 333 | for (RenderTargetMap::iterator it = mRenderTargets.begin(); it != mRenderTargets.end(); ++it)
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| 334 | {
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| 335 | if (!primary && it->second->isPrimary())
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| 336 | primary = it->second;
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| 337 | else
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| 338 | delete it->second;
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| 339 | }
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| 340 | delete primary;
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| 341 | mRenderTargets.clear();
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| 342 |
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| 343 | mPrioritisedRenderTargets.clear();
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| 344 | }
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| 345 | //-----------------------------------------------------------------------
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| 346 | void RenderSystem::_beginGeometryCount(void)
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| 347 | {
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| 348 | mFaceCount = mVertexCount = 0;
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| 349 |
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| 350 | }
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| 351 | //-----------------------------------------------------------------------
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| 352 | unsigned int RenderSystem::_getFaceCount(void) const
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| 353 | {
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| 354 | return static_cast< unsigned int >( mFaceCount );
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| 355 | }
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| 356 | //-----------------------------------------------------------------------
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| 357 | unsigned int RenderSystem::_getVertexCount(void) const
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| 358 | {
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| 359 | return static_cast< unsigned int >( mVertexCount );
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| 360 | }
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| 361 | //-----------------------------------------------------------------------
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| 362 | void RenderSystem::_setWorldMatrices(const Matrix4* m, unsigned short count)
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| 363 | {
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| 364 | // Save these matrices for software blending later
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| 365 | for (unsigned short i = 0; i < count; ++i)
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| 366 | {
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| 367 | mWorldMatrices[i] = m[i];
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| 368 | }
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| 369 | // Set hardware matrix to nothing
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| 370 | _setWorldMatrix(Matrix4::IDENTITY);
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| 371 | }
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| 372 | //-----------------------------------------------------------------------
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| 373 | void RenderSystem::_render(const RenderOperation& op)
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| 374 | {
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| 375 | // Update stats
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| 376 | size_t val;
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| 377 |
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| 378 | if (op.useIndexes)
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| 379 | val = op.indexData->indexCount;
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| 380 | else
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| 381 | val = op.vertexData->vertexCount;
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| 382 |
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| 383 | switch(op.operationType)
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| 384 | {
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| 385 | case RenderOperation::OT_TRIANGLE_LIST:
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| 386 | mFaceCount += val / 3;
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| 387 | break;
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| 388 | case RenderOperation::OT_TRIANGLE_STRIP:
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| 389 | case RenderOperation::OT_TRIANGLE_FAN:
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| 390 | mFaceCount += val - 2;
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| 391 | break;
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| 392 | case RenderOperation::OT_POINT_LIST:
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| 393 | case RenderOperation::OT_LINE_LIST:
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| 394 | case RenderOperation::OT_LINE_STRIP:
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| 395 | break;
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| 396 | }
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| 397 |
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| 398 | mVertexCount += op.vertexData->vertexCount;
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| 399 |
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| 400 | }
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| 401 | //-----------------------------------------------------------------------
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| 402 | void RenderSystem::setInvertVertexWinding(bool invert)
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| 403 | {
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| 404 | mInvertVertexWinding = invert;
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| 405 | }
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| 406 | //-----------------------------------------------------------------------
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| 407 | void RenderSystem::setClipPlane (ushort index, const Plane &p)
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| 408 | {
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| 409 | setClipPlane (index, p.normal.x, p.normal.y, p.normal.z, p.d);
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| 410 | }
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| 411 | //-----------------------------------------------------------------------
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| 412 | void RenderSystem::_notifyCameraRemoved(const Camera* cam)
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| 413 | {
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| 414 | RenderTargetMap::iterator i, iend;
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| 415 | iend = mRenderTargets.end();
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| 416 | for (i = mRenderTargets.begin(); i != iend; ++i)
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| 417 | {
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| 418 | RenderTarget* target = i->second;
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| 419 | target->_notifyCameraRemoved(cam);
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| 420 | }
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| 421 | }
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| 422 | #ifdef GTP_VISIBILITY_MODIFIED_OGRE
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| 423 | // ------------------------------------------------------------------
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| 424 | void RenderSystem::setColour(int r, int g, int b, int a)
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| 425 | {
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| 426 | mColour[0] = r;
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| 427 | mColour[1] = g;
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| 428 | mColour[2] = b;
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| 429 | mColour[3] = a;
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| 430 | }
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| 431 | #endif // GTP_VISIBILITY_MODIFIED_OGRE
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| 432 | }
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| 433 |
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