[5] | 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) 2000-2006 Torus Knot Software Ltd |
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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 | You may alternatively use this source under the terms of a specific version of |
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| 25 | the OGRE Unrestricted License provided you have obtained such a license from |
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| 26 | Torus Knot Software Ltd. |
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| 27 | ----------------------------------------------------------------------------- |
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| 28 | */ |
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| 29 | |
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| 30 | #include "OgreSDLWindow.h" |
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| 31 | #include "OgreRoot.h" |
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| 32 | #include "OgreRenderSystem.h" |
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| 33 | #include "OgreImageCodec.h" |
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| 34 | #include "OgreException.h" |
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| 35 | #include "OgreLogManager.h" |
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| 36 | #include "OgreStringConverter.h" |
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| 37 | |
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| 38 | #if OGRE_PLATFORM == OGRE_PLATFORM_WIN32 |
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| 39 | # include <windows.h> |
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| 40 | # include <wingdi.h> |
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| 41 | # include <GL/gl.h> |
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| 42 | # define GL_GLEXT_PROTOTYPES |
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| 43 | # include "glprocs.h" |
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| 44 | # include <GL/glu.h> |
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| 45 | #elif OGRE_PLATFORM == OGRE_PLATFORM_LINUX |
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| 46 | # include <GL/gl.h> |
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| 47 | # include <GL/glu.h> |
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| 48 | #elif OGRE_PLATFORM == OGRE_PLATFORM_APPLE |
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| 49 | # include <OpenGL/gl.h> |
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| 50 | # define GL_EXT_texture_env_combine 1 |
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| 51 | # include <OpenGL/glext.h> |
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| 52 | # include <OpenGL/glu.h> |
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| 53 | #endif |
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| 54 | |
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| 55 | namespace Ogre { |
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| 56 | |
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| 57 | SDLWindow::SDLWindow() : |
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| 58 | mScreen(NULL), mActive(false), mClosed(false) |
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| 59 | { |
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| 60 | } |
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| 61 | |
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| 62 | SDLWindow::~SDLWindow() |
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| 63 | { |
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| 64 | // according to http://www.libsdl.org/cgi/docwiki.cgi/SDL_5fSetVideoMode |
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| 65 | // never free the surface returned from SDL_SetVideoMode |
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| 66 | /*if (mScreen != NULL) |
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| 67 | SDL_FreeSurface(mScreen);*/ |
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| 68 | |
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| 69 | } |
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| 70 | |
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| 71 | void SDLWindow::create(const String& name, unsigned int width, unsigned int height, |
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| 72 | bool fullScreen, const NameValuePairList *miscParams) |
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| 73 | { |
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| 74 | int colourDepth = 32; |
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| 75 | String title = name; |
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| 76 | if(miscParams) |
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| 77 | { |
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| 78 | // Parse miscellenous parameters |
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| 79 | NameValuePairList::const_iterator opt; |
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| 80 | // Bit depth |
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| 81 | opt = miscParams->find("colourDepth"); |
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| 82 | if(opt != miscParams->end()) //check for FSAA parameter, if not ignore it... |
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| 83 | colourDepth = StringConverter::parseUnsignedInt(opt->second); |
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| 84 | // Full screen antialiasing |
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| 85 | opt = miscParams->find("FSAA"); |
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| 86 | if(opt != miscParams->end()) //check for FSAA parameter, if not ignore it... |
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| 87 | { |
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| 88 | size_t fsaa_x_samples = StringConverter::parseUnsignedInt(opt->second); |
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| 89 | if(fsaa_x_samples>1) { |
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| 90 | // If FSAA is enabled in the parameters, enable the MULTISAMPLEBUFFERS |
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| 91 | // and set the number of samples before the render window is created. |
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| 92 | SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS,1); |
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| 93 | SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES,fsaa_x_samples); |
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| 94 | } |
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| 95 | } |
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| 96 | // Window title |
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| 97 | opt = miscParams->find("title"); |
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| 98 | if(opt != miscParams->end()) //check for FSAA parameter, if not ignore it... |
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| 99 | title = opt->second; |
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| 100 | } |
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| 101 | |
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| 102 | LogManager::getSingleton().logMessage("SDLWindow::create", LML_TRIVIAL); |
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| 103 | SDL_Surface* screen; |
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| 104 | int flags = SDL_OPENGL | SDL_HWPALETTE | SDL_RESIZABLE; |
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| 105 | |
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| 106 | SDL_GL_SetAttribute( SDL_GL_DOUBLEBUFFER, 1 ); |
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| 107 | // request good stencil size if 32-bit colour |
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| 108 | if (colourDepth == 32) |
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| 109 | { |
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| 110 | SDL_GL_SetAttribute( SDL_GL_STENCIL_SIZE, 8); |
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| 111 | } |
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| 112 | |
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| 113 | if (fullScreen) |
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| 114 | flags |= SDL_FULLSCREEN; |
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| 115 | |
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| 116 | LogManager::getSingleton().logMessage("Create window", LML_TRIVIAL); |
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| 117 | screen = SDL_SetVideoMode(width, height, colourDepth, flags); |
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| 118 | if (!screen) |
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| 119 | { |
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| 120 | LogManager::getSingleton().logMessage(LML_CRITICAL, |
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| 121 | String("Could not make screen: ") + SDL_GetError()); |
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| 122 | exit(1); |
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| 123 | } |
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| 124 | LogManager::getSingleton().logMessage("screen is valid", LML_TRIVIAL); |
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| 125 | mScreen = screen; |
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| 126 | |
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| 127 | mName = name; |
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| 128 | |
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| 129 | mWidth = width; |
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| 130 | mHeight = height; |
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| 131 | |
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| 132 | mActive = true; |
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| 133 | |
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| 134 | if (!fullScreen) |
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| 135 | SDL_WM_SetCaption(title.c_str(), 0); |
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| 136 | |
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| 137 | glXGetVideoSyncSGI = (int (*)(unsigned int *))SDL_GL_GetProcAddress("glXGetVideoSyncSGI"); |
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| 138 | glXWaitVideoSyncSGI = (int (*)(int, int, unsigned int *))SDL_GL_GetProcAddress("glXWaitVideoSyncSGI"); |
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| 139 | } |
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| 140 | |
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| 141 | void SDLWindow::destroy(void) |
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| 142 | { |
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| 143 | // according to http://www.libsdl.org/cgi/docwiki.cgi/SDL_5fSetVideoMode |
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| 144 | // never free the surface returned from SDL_SetVideoMode |
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| 145 | //SDL_FreeSurface(mScreen); |
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| 146 | mScreen = NULL; |
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| 147 | mActive = false; |
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| 148 | |
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| 149 | Root::getSingleton().getRenderSystem()->detachRenderTarget( this->getName() ); |
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| 150 | } |
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| 151 | |
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| 152 | bool SDLWindow::isActive() const |
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| 153 | { |
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| 154 | return mActive; |
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| 155 | } |
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| 156 | |
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| 157 | bool SDLWindow::isClosed() const |
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| 158 | { |
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| 159 | return mClosed; |
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| 160 | } |
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| 161 | |
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| 162 | void SDLWindow::reposition(int left, int top) |
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| 163 | { |
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| 164 | // XXX FIXME |
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| 165 | } |
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| 166 | |
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| 167 | void SDLWindow::resize(unsigned int width, unsigned int height) |
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| 168 | { |
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| 169 | SDL_Surface* screen; |
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| 170 | int flags = SDL_OPENGL | SDL_HWPALETTE | SDL_RESIZABLE; |
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| 171 | |
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| 172 | LogManager::getSingleton().logMessage("Updating window", LML_TRIVIAL); |
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| 173 | screen = SDL_SetVideoMode(width, height, mScreen->format->BitsPerPixel, flags); |
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| 174 | if (!screen) |
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| 175 | { |
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| 176 | LogManager::getSingleton().logMessage(LML_CRITICAL, |
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| 177 | String("Could not make screen: ") + SDL_GetError()); |
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| 178 | exit(1); |
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| 179 | } |
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| 180 | LogManager::getSingleton().logMessage("screen is valid", LML_TRIVIAL); |
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| 181 | mScreen = screen; |
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| 182 | |
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| 183 | |
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| 184 | mWidth = width; |
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| 185 | mHeight = height; |
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| 186 | |
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| 187 | for (ViewportList::iterator it = mViewportList.begin(); |
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| 188 | it != mViewportList.end(); ++it) |
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| 189 | { |
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| 190 | (*it).second->_updateDimensions(); |
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| 191 | } |
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| 192 | } |
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| 193 | |
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| 194 | void SDLWindow::swapBuffers(bool waitForVSync) |
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| 195 | { |
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| 196 | if ( waitForVSync && glXGetVideoSyncSGI && glXWaitVideoSyncSGI ) |
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| 197 | { |
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| 198 | unsigned int retraceCount; |
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| 199 | glXGetVideoSyncSGI( &retraceCount ); |
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| 200 | glXWaitVideoSyncSGI( 2, ( retraceCount + 1 ) & 1, &retraceCount); |
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| 201 | } |
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| 202 | |
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| 203 | SDL_GL_SwapBuffers(); |
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| 204 | // XXX More? |
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| 205 | } |
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| 206 | |
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| 207 | void SDLWindow::writeContentsToFile(const String& filename) |
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| 208 | { |
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| 209 | ImageCodec::ImageData* imgData = new ImageCodec::ImageData; |
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| 210 | imgData->width = mWidth; |
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| 211 | imgData->height = mHeight; |
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| 212 | imgData->format = PF_BYTE_RGB; |
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| 213 | |
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| 214 | // Allocate buffer |
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| 215 | uchar* pBuffer = new uchar[mWidth * mHeight * 3]; |
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| 216 | |
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| 217 | // Read pixels |
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| 218 | // I love GL: it does all the locking & colour conversion for us |
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| 219 | glReadPixels(0,0, mWidth-1, mHeight-1, GL_RGB, GL_UNSIGNED_BYTE, pBuffer); |
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| 220 | |
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| 221 | // Wrap buffer in a memory stream |
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| 222 | DataStreamPtr stream(new MemoryDataStream(pBuffer, mWidth * mHeight * 3, false)); |
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| 223 | |
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| 224 | // Need to flip the read data over in Y though |
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| 225 | Image img; |
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| 226 | img.loadRawData(stream, mWidth, mHeight, imgData->format ); |
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| 227 | img.flipAroundX(); |
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| 228 | |
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| 229 | MemoryDataStreamPtr streamFlipped(new MemoryDataStream(img.getData(), stream->size(), false)); |
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| 230 | |
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| 231 | // Get codec |
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| 232 | size_t pos = filename.find_last_of("."); |
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| 233 | String extension; |
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| 234 | if( pos == String::npos ) |
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| 235 | OGRE_EXCEPT( |
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| 236 | Exception::ERR_INVALIDPARAMS, |
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| 237 | "Unable to determine image type for '" + filename + "' - invalid extension.", |
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| 238 | "SDLWindow::writeContentsToFile" ); |
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| 239 | |
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| 240 | while( pos != filename.length() - 1 ) |
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| 241 | extension += filename[++pos]; |
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| 242 | |
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| 243 | // Get the codec |
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| 244 | Codec * pCodec = Codec::getCodec(extension); |
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| 245 | |
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| 246 | // Write out |
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| 247 | Codec::CodecDataPtr codecDataPtr(imgData); |
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| 248 | pCodec->codeToFile(streamFlipped, filename, codecDataPtr); |
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| 249 | |
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| 250 | delete [] pBuffer; |
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| 251 | |
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| 252 | |
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| 253 | } |
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| 254 | } |
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