[1] | 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 "OgreGLXWindow.h" |
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| 31 | #include "OgreRoot.h" |
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| 32 | #include "OgreGLRenderSystem.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 | #include "OgreGLXUtils.h" |
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| 38 | #include "OgreWindowEventUtilities.h" |
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| 39 | |
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| 40 | #include <iostream> |
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| 41 | #include <algorithm> |
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| 42 | #include <sys/time.h> |
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| 43 | #include <climits> |
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| 44 | |
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| 45 | #include <X11/Xlib.h> |
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| 46 | #include <X11/keysym.h> |
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| 47 | |
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| 48 | #ifndef NO_XRANDR |
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| 49 | #include <X11/extensions/Xrandr.h> |
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| 50 | #endif |
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| 51 | |
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| 52 | #include <GL/gl.h> |
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| 53 | #include <GL/glu.h> |
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| 54 | #include <GL/glx.h> |
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| 55 | |
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| 56 | |
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| 57 | namespace Ogre |
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| 58 | { |
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| 59 | |
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| 60 | //-------------------------------------------------------------------------------------------------// |
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| 61 | GLXWindow::GLXWindow(Display *display) : |
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| 62 | mDisplay(display), mWindow(0), mGlxContext(0), mVisualInfo(0), mDelVisualInfo(false), |
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| 63 | mDelWindow(false), mClosed(false), mVisible(true), mOldMode(-1), |
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| 64 | mContext(0) |
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| 65 | { |
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| 66 | mActive = false; |
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| 67 | mIsFullScreen = false; |
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| 68 | } |
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| 69 | |
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| 70 | //-------------------------------------------------------------------------------------------------// |
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| 71 | GLXWindow::~GLXWindow() |
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| 72 | { |
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| 73 | if (mDelVisualInfo && mVisualInfo) |
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| 74 | XFree(mVisualInfo); |
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| 75 | |
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| 76 | if(mGlxContext) |
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| 77 | glXDestroyContext(mDisplay, mGlxContext); |
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| 78 | |
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| 79 | if(mDelWindow && mWindow) |
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| 80 | XDestroyWindow(mDisplay, mWindow); |
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| 81 | |
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| 82 | #ifndef NO_XRANDR |
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| 83 | if(mIsFullScreen) |
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| 84 | { |
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| 85 | // Restore original video mode. |
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| 86 | Window rootWindow = DefaultRootWindow(mDisplay); |
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| 87 | XRRScreenConfiguration *config; |
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| 88 | |
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| 89 | // Get current screen info |
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| 90 | config = XRRGetScreenInfo(mDisplay, rootWindow); |
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| 91 | if(config) |
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| 92 | { |
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| 93 | Rotation current_rotation; |
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| 94 | XRRConfigCurrentConfiguration (config, ¤t_rotation); |
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| 95 | //std::cerr << "Restore mode " << mOldMode << std::endl; |
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| 96 | LogManager::getSingleton().logMessage("GLXWindow::~GLXWindow -- Leaving full screen mode"); |
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| 97 | XRRSetScreenConfig(mDisplay, config, rootWindow, mOldMode, current_rotation, CurrentTime); |
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| 98 | XRRFreeScreenConfigInfo(config); |
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| 99 | } |
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| 100 | else |
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| 101 | { |
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| 102 | LogManager::getSingleton().logMessage("GLXWindow::~GLXWindow -- Could not switch from full screen mode: XRRGetScreenInfo failed"); |
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| 103 | } |
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| 104 | } |
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| 105 | #endif |
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| 106 | } |
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| 107 | |
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| 108 | //-------------------------------------------------------------------------------------------------// |
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| 109 | void GLXWindow::create(const String& name, unsigned int width, unsigned int height, |
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| 110 | bool fullScreen, const NameValuePairList *miscParams) |
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| 111 | { |
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| 112 | LogManager::getSingleton().logMessage("GLXWindow::create"); |
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| 113 | |
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| 114 | String title = name; |
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| 115 | size_t fsaa_samples = 0; |
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| 116 | |
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| 117 | // We will attempt to create new window on default screen op display 0 |
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| 118 | // unless external window handle passed below |
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| 119 | int screen = DefaultScreen(mDisplay); |
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| 120 | int depth = DisplayPlanes(mDisplay, screen); |
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| 121 | Window rootWindow = RootWindow(mDisplay,screen); |
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| 122 | Window parentWindow = rootWindow; |
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| 123 | |
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| 124 | // Make sure the window is centered if no left and top in parameters |
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| 125 | size_t left = (int)DisplayWidth(mDisplay, screen)/2 - width/2; |
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| 126 | size_t top = (int)DisplayHeight(mDisplay, screen)/2 - height/2; |
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| 127 | |
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| 128 | // Maybe user already created the window and passed its visualinfo in miscParams |
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| 129 | XVisualInfo * extVisualHandler = NULL; |
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| 130 | |
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| 131 | // Unless parentWindowHandle is given in miscParams we're top-level |
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| 132 | mTopLevel = true; |
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| 133 | |
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| 134 | LogManager::getSingleton().logMessage("Parsing miscParams"); |
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| 135 | if(miscParams) |
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| 136 | { |
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| 137 | // Parse miscellenous parameters |
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| 138 | NameValuePairList::const_iterator opt; |
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| 139 | // Full screen anti aliasing |
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| 140 | opt = miscParams->find("FSAA"); |
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| 141 | if(opt != miscParams->end()) //check for FSAA parameter, if not ignore it... |
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| 142 | fsaa_samples = StringConverter::parseUnsignedInt(opt->second); |
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| 143 | // left (x) |
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| 144 | opt = miscParams->find("left"); |
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| 145 | if(opt != miscParams->end()) |
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| 146 | left = StringConverter::parseUnsignedInt(opt->second); |
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| 147 | // top (y) |
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| 148 | opt = miscParams->find("top"); |
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| 149 | if(opt != miscParams->end()) |
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| 150 | top = StringConverter::parseUnsignedInt(opt->second); |
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| 151 | // Window title |
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| 152 | opt = miscParams->find("title"); |
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| 153 | if(opt != miscParams->end()) //check for FSAA parameter, if not ignore it... |
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| 154 | title = opt->second; |
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| 155 | opt = miscParams->find("parentWindowHandle"); |
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| 156 | if(opt != miscParams->end()) { // embedding OGRE |
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| 157 | std::vector<String> tokens = StringUtil::split(opt->second, " :"); |
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| 158 | String new_display = tokens[0]; |
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| 159 | String new_screen = tokens[1]; |
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| 160 | String wid = tokens[2]; |
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| 161 | |
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| 162 | // Now set things to their correct values |
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| 163 | // This must be the ugliest line of code I have ever written :P |
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| 164 | mDisplay = reinterpret_cast<Display*>(StringConverter::parseUnsignedLong(new_display)); |
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| 165 | screen = StringConverter::parseUnsignedInt(new_screen); |
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| 166 | parentWindow = StringConverter::parseUnsignedLong(wid); |
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| 167 | |
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| 168 | depth = DisplayPlanes(mDisplay, screen); |
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| 169 | rootWindow = RootWindow(mDisplay, screen); |
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| 170 | |
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| 171 | left = top = 0; |
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| 172 | fullScreen = false; // Can't be full screen if embedded in an app! |
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| 173 | } |
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| 174 | |
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| 175 | opt = miscParams->find("externalWindowHandle"); |
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| 176 | if(opt != miscParams->end()) // embedding OGRE in already created window |
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| 177 | { |
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| 178 | std::vector<String> tokens = StringUtil::split(opt->second, " :"); |
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| 179 | String new_display = tokens[0]; |
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| 180 | String new_screen = tokens[1]; |
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| 181 | String wid = tokens[2]; |
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| 182 | |
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| 183 | mDisplay = reinterpret_cast<Display*>(StringConverter::parseUnsignedLong(new_display)); |
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| 184 | screen = StringConverter::parseUnsignedInt(new_screen); |
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| 185 | mWindow = StringConverter::parseUnsignedLong(wid); |
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| 186 | |
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| 187 | if(tokens.size() > 3) // external visual was already setup |
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| 188 | { |
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| 189 | extVisualHandler = reinterpret_cast<XVisualInfo*>(StringConverter::parseUnsignedLong(tokens[3])); |
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| 190 | } |
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| 191 | |
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| 192 | depth = DisplayPlanes(mDisplay, screen); |
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| 193 | rootWindow = RootWindow(mDisplay, screen); |
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| 194 | |
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| 195 | left = top = 0; |
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| 196 | fullScreen = false; // Can't be full screen if embedded in an app! |
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| 197 | mTopLevel = false; // Can't be top-level if embedded |
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| 198 | } |
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| 199 | |
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| 200 | } |
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| 201 | |
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| 202 | // Check for full screen mode if FSAA was asked for |
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| 203 | if(!fullScreen && fsaa_samples>0) |
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| 204 | { |
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| 205 | LogManager::getSingleton().logMessage("GLXWindow::create -- FSAA only supported in fullscreen mode"); |
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| 206 | fsaa_samples = 0; |
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| 207 | } |
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| 208 | // Disable FSAA for now -- it doesn't work on NVIDIA |
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| 209 | fsaa_samples = 0; |
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| 210 | |
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| 211 | #ifndef NO_XRANDR |
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| 212 | // Attempt mode switch for fullscreen -- only if RANDR extension is there |
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| 213 | int dummy; |
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| 214 | if(fullScreen && ! XQueryExtension(mDisplay, "RANDR", &dummy, &dummy, &dummy)) |
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| 215 | { |
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| 216 | LogManager::getSingleton().logMessage("GLXWindow::create -- Could not switch to full screen mode: No XRANDR extension found"); |
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| 217 | } |
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| 218 | else if(fullScreen) |
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| 219 | { |
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| 220 | // Use Xrandr extension to switch video modes. This is much better than |
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| 221 | // XVidMode as you can't scroll away from the full-screen applications. |
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| 222 | XRRScreenConfiguration *config; |
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| 223 | XRRScreenSize *sizes; |
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| 224 | Rotation current_rotation; |
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| 225 | int nsizes; |
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| 226 | |
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| 227 | // Get current screen info |
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| 228 | config = XRRGetScreenInfo(mDisplay, rootWindow); |
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| 229 | // Get available sizes |
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| 230 | if(config) |
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| 231 | sizes = XRRConfigSizes (config, &nsizes); |
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| 232 | |
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| 233 | if(config && nsizes > 0) { |
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| 234 | // Get current size and rotation |
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| 235 | mOldMode = XRRConfigCurrentConfiguration (config, ¤t_rotation); |
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| 236 | // Find smallest matching mode |
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| 237 | int mode = -1; |
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| 238 | int mode_width = INT_MAX; |
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| 239 | int mode_height = INT_MAX; |
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| 240 | for(size_t i=0; i<nsizes; i++) |
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| 241 | { |
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| 242 | if(sizes[i].width >= static_cast<int>(width) && |
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| 243 | sizes[i].height >= static_cast<int>(height) && |
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| 244 | sizes[i].width < mode_width && |
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| 245 | sizes[i].height < mode_height) |
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| 246 | { |
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| 247 | mode = i; |
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| 248 | mode_width = sizes[i].width; |
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| 249 | mode_height = sizes[i].height; |
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| 250 | } |
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| 251 | } |
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| 252 | if(mode >= 0) { |
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| 253 | // Finally, set the screen configuration |
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| 254 | LogManager::getSingleton().logMessage("GLXWindow::create -- Entering full screen mode"); |
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| 255 | XRRSetScreenConfig(mDisplay, config, rootWindow, mode, current_rotation, CurrentTime); |
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| 256 | } else { |
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| 257 | LogManager::getSingleton().logMessage("GLXWindow::create -- Could not switch to full screen mode: No conforming mode was found"); |
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| 258 | } |
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| 259 | // Free configuration data |
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| 260 | XRRFreeScreenConfigInfo(config); |
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| 261 | } else { |
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| 262 | LogManager::getSingleton().logMessage("GLXWindow::create -- Could not switch to full screen mode: XRRGetScreenInfo failed"); |
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| 263 | } |
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| 264 | } |
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| 265 | #endif |
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| 266 | |
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| 267 | if(extVisualHandler == NULL) // user didn't create visual ( and window ) himself |
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| 268 | { |
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| 269 | // Apply some magic algorithm to get the best visual |
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| 270 | int best_visual = GLXUtils::findBestVisual(mDisplay, screen, fsaa_samples); |
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| 271 | if(best_visual == -1) |
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| 272 | { |
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| 273 | best_visual = GLXUtils::findBestVisual(mDisplay, screen); |
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| 274 | LogManager::getSingleton().logMessage("GLXWindow::create -- Requested FSAA of "+ |
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| 275 | StringConverter::toString(fsaa_samples)+" was not acquirable, defaulting to first suitable visual"); |
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| 276 | } |
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| 277 | LogManager::getSingleton().logMessage("GLXWindow::create -- Best visual is "+StringConverter::toString(best_visual)); |
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| 278 | |
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| 279 | // Get information about this so-called-best visual |
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| 280 | XVisualInfo templ; |
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| 281 | int nmatch; |
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| 282 | templ.visualid = best_visual; |
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| 283 | mVisualInfo = XGetVisualInfo(mDisplay, VisualIDMask, &templ, &nmatch); |
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| 284 | mDelVisualInfo = true; |
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| 285 | if(mVisualInfo==0 || nmatch==0) { |
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| 286 | OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, "GLXWindow: error choosing visual", "GLXWindow::create"); |
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| 287 | } |
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| 288 | |
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| 289 | XSetWindowAttributes attr; |
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| 290 | unsigned long mask; |
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| 291 | attr.background_pixel = 0; |
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| 292 | attr.border_pixel = 0; |
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| 293 | attr.colormap = XCreateColormap(mDisplay,rootWindow,mVisualInfo->visual,AllocNone); |
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| 294 | attr.event_mask = StructureNotifyMask | VisibilityChangeMask; |
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| 295 | if(fullScreen) { |
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| 296 | mask = CWBackPixel | CWColormap | CWOverrideRedirect | CWSaveUnder | CWBackingStore | CWEventMask; |
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| 297 | attr.override_redirect = True; |
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| 298 | attr.backing_store = NotUseful; |
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| 299 | attr.save_under = False; |
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| 300 | // Fullscreen windows are always in the top left origin |
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| 301 | left = top = 0; |
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| 302 | } else |
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| 303 | mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask; |
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| 304 | |
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| 305 | // Create window on server |
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| 306 | mWindow = XCreateWindow(mDisplay,parentWindow,left,top,width,height,0,mVisualInfo->depth,InputOutput,mVisualInfo->visual,mask,&attr); |
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| 307 | mDelWindow = true; |
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| 308 | if(!mWindow) { |
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| 309 | OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, "GLXWindow: XCreateWindow failed", "GLXWindow::create"); |
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| 310 | } |
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| 311 | |
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| 312 | // Make sure the window is in normal state |
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| 313 | XWMHints *wm_hints; |
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| 314 | if ((wm_hints = XAllocWMHints()) != NULL) { |
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| 315 | wm_hints->initial_state = NormalState; |
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| 316 | wm_hints->input = True; |
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| 317 | wm_hints->flags = StateHint | InputHint; |
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| 318 | |
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| 319 | // Check if we can give it an icon |
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| 320 | if(depth == 24 || depth == 32) { |
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| 321 | // Woot! The right bit depth, we can load an icon |
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| 322 | if(GLXUtils::LoadIcon(mDisplay, rootWindow, "GLX_icon.png", &wm_hints->icon_pixmap, &wm_hints->icon_mask)) |
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| 323 | wm_hints->flags |= IconPixmapHint | IconMaskHint; |
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| 324 | } |
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| 325 | } |
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| 326 | |
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| 327 | // Set size and location hints |
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| 328 | XSizeHints *size_hints; |
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| 329 | if ((size_hints = XAllocSizeHints()) != NULL) { |
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| 330 | // Otherwise some window managers ignore our position request |
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| 331 | size_hints->flags = USPosition; |
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| 332 | } |
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| 333 | |
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| 334 | // Make text property from title |
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| 335 | XTextProperty titleprop; |
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| 336 | char *lst = (char*)title.c_str(); |
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| 337 | XStringListToTextProperty((char **)&lst, 1, &titleprop); |
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| 338 | |
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| 339 | XSetWMProperties(mDisplay, mWindow, &titleprop, NULL, NULL, 0, size_hints, wm_hints, NULL); |
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| 340 | |
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| 341 | // We don't like memory leaks. Free the clientside storage, but not the |
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| 342 | // pixmaps as they're still being used by the server. |
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| 343 | XFree(titleprop.value); |
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| 344 | XFree(wm_hints); |
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| 345 | XFree(size_hints); |
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| 346 | |
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| 347 | // Acquire atom to recognize window close events |
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| 348 | mAtomDeleteWindow = XInternAtom(mDisplay,"WM_DELETE_WINDOW",False); |
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| 349 | XSetWMProtocols(mDisplay,mWindow,&mAtomDeleteWindow,1); |
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| 350 | |
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| 351 | // Map window unto screen and focus it. |
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| 352 | XMapWindow(mDisplay,mWindow); |
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| 353 | |
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| 354 | // Make sure the server is up to date and focus the window |
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| 355 | XFlush(mDisplay); |
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| 356 | |
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| 357 | //Register only Ogre created windows (users can register their own) |
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| 358 | WindowEventUtilities::_addRenderWindow(this); |
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| 359 | } |
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| 360 | else |
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| 361 | { |
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| 362 | LogManager::getSingleton().logMessage("GLXWindow::create -- using external window handle"); |
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| 363 | mVisualInfo = extVisualHandler; |
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| 364 | mDelVisualInfo = false; |
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| 365 | } |
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| 366 | |
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| 367 | GLRenderSystem *rs = static_cast<GLRenderSystem*>(Root::getSingleton().getRenderSystem()); |
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| 368 | GLXContext* mainContext = static_cast<GLXContext*>( rs->_getMainContext() ); |
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| 369 | if ( mainContext == 0 ) |
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| 370 | { |
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| 371 | // Finally, create a GL context |
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| 372 | // we want to share it with main |
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| 373 | mGlxContext = glXCreateContext(mDisplay,mVisualInfo,NULL,True); |
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| 374 | } |
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| 375 | else |
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| 376 | mGlxContext = glXCreateContext(mDisplay,mVisualInfo,mainContext->mCtx,True); |
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| 377 | |
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| 378 | if(!mGlxContext) |
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| 379 | OGRE_EXCEPT(Exception::ERR_RENDERINGAPI_ERROR, "glXCreateContext failed", "GLXWindow::create"); |
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| 380 | |
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| 381 | mName = name; |
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| 382 | mWidth = width; |
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| 383 | mHeight = height; |
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| 384 | mIsFullScreen = fullScreen; |
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| 385 | |
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| 386 | //Get the attributes of the screen |
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| 387 | XWindowAttributes temp; |
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| 388 | XGetWindowAttributes(mDisplay, mWindow, &temp); |
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| 389 | mLeft = temp.x; |
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| 390 | mTop = temp.y; |
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| 391 | |
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| 392 | // Create OGRE GL context |
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| 393 | mContext = new GLXContext(mDisplay, mWindow, mGlxContext, mVisualInfo); |
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| 394 | } |
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| 395 | |
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| 396 | //-------------------------------------------------------------------------------------------------// |
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| 397 | void GLXWindow::destroy(void) |
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| 398 | { |
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| 399 | WindowEventUtilities::_removeRenderWindow(this); |
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| 400 | |
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| 401 | // Unregister and destroy OGRE GLContext |
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| 402 | delete mContext; |
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| 403 | |
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| 404 | // Destroy GL context |
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| 405 | if(mGlxContext) |
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| 406 | glXDestroyContext(mDisplay, mGlxContext); |
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| 407 | |
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| 408 | if(mDelWindow && mWindow) |
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| 409 | XDestroyWindow(mDisplay, mWindow); |
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| 410 | |
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| 411 | mContext = 0; |
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| 412 | mWindow = 0; |
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| 413 | mGlxContext = 0; |
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| 414 | mActive = false; |
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| 415 | mVisible = false; |
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| 416 | mClosed = true; |
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| 417 | |
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| 418 | Root::getSingleton().getRenderSystem()->detachRenderTarget( this->getName() ); |
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| 419 | } |
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| 420 | |
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| 421 | //-------------------------------------------------------------------------------------------------// |
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| 422 | bool GLXWindow::isActive() const |
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| 423 | { |
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| 424 | return mActive; |
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| 425 | } |
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| 426 | |
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| 427 | //-------------------------------------------------------------------------------------------------// |
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| 428 | bool GLXWindow::isClosed() const |
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| 429 | { |
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| 430 | return mClosed; |
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| 431 | } |
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| 432 | |
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| 433 | //-------------------------------------------------------------------------------------------------// |
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| 434 | bool GLXWindow::isVisible() const |
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| 435 | { |
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| 436 | return mVisible; |
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| 437 | } |
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| 438 | |
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| 439 | //-------------------------------------------------------------------------------------------------// |
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| 440 | void GLXWindow::setVisible(bool visible) |
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| 441 | { |
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| 442 | mVisible = visible; |
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| 443 | } |
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| 444 | |
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| 445 | //-------------------------------------------------------------------------------------------------// |
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| 446 | void GLXWindow::reposition(int left, int top) |
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| 447 | { |
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| 448 | XMoveWindow(mDisplay,mWindow,left,top); |
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| 449 | } |
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| 450 | |
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| 451 | //-------------------------------------------------------------------------------------------------// |
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| 452 | void GLXWindow::resize(unsigned int width, unsigned int height) |
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| 453 | { |
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| 454 | // Check if the window size really changed |
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| 455 | if(mWidth == width && mHeight == height) |
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| 456 | return; |
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| 457 | |
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| 458 | mWidth = width; |
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| 459 | mHeight = height; |
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| 460 | |
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| 461 | if (!mTopLevel) |
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| 462 | { |
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| 463 | for (ViewportList::iterator it = mViewportList.begin(); it != mViewportList.end(); ++it) |
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| 464 | (*it).second->_updateDimensions(); |
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| 465 | } |
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| 466 | else |
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| 467 | { |
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| 468 | XResizeWindow(mDisplay, mWindow, width, height); /// Ogre handles window |
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| 469 | } |
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| 470 | } |
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| 471 | |
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| 472 | //-------------------------------------------------------------------------------------------------// |
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| 473 | void GLXWindow::windowMovedOrResized() |
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| 474 | { |
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| 475 | //Get the new attributes of the screen |
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| 476 | XWindowAttributes temp; |
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| 477 | XGetWindowAttributes(mDisplay, mWindow, &temp); |
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| 478 | mLeft = temp.x; |
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| 479 | mTop = temp.y; |
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| 480 | |
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| 481 | //Only update viewport dimensions if they did actually change |
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| 482 | if (static_cast<int>(mWidth) == temp.width && static_cast<int>(mHeight) == temp.height) |
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| 483 | return; |
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| 484 | |
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| 485 | mWidth = temp.width; |
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| 486 | mHeight = temp.height; |
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| 487 | |
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| 488 | // Notify viewports of resize |
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| 489 | ViewportList::iterator it, itend; |
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| 490 | itend = mViewportList.end(); |
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| 491 | for( it = mViewportList.begin(); it != itend; ++it ) |
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| 492 | (*it).second->_updateDimensions(); |
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| 493 | } |
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| 494 | |
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| 495 | //-------------------------------------------------------------------------------------------------// |
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| 496 | void GLXWindow::swapBuffers(bool waitForVSync) |
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| 497 | { |
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| 498 | glXSwapBuffers(mDisplay,mWindow); |
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| 499 | } |
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| 500 | |
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| 501 | //-------------------------------------------------------------------------------------------------// |
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| 502 | void GLXWindow::getCustomAttribute( const String& name, void* pData ) |
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| 503 | { |
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| 504 | if( name == "DISPLAY" ) |
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| 505 | { |
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| 506 | *static_cast<Display**>(pData) = mDisplay; |
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| 507 | return; |
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| 508 | } |
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| 509 | else if( name == "ATOM" ) |
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| 510 | { |
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| 511 | *static_cast< ::Atom* >(pData) = mAtomDeleteWindow; |
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| 512 | return; |
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| 513 | } |
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| 514 | else if( name == "WINDOW" ) |
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| 515 | { |
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| 516 | *static_cast<Window*>(pData) = mWindow; |
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| 517 | return; |
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| 518 | } |
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| 519 | else if( name == "GLCONTEXT" ) |
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| 520 | { |
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| 521 | *static_cast<GLXContext**>(pData) = mContext; |
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| 522 | return; |
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| 523 | } |
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| 524 | } |
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| 525 | |
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| 526 | //-------------------------------------------------------------------------------------------------// |
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| 527 | void GLXWindow::writeContentsToFile(const String& filename) |
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| 528 | { |
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| 529 | ImageCodec::ImageData* imgData = new ImageCodec::ImageData; |
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| 530 | imgData->width = mWidth; |
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| 531 | imgData->height = mHeight; |
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| 532 | imgData->format = PF_BYTE_RGB; |
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| 533 | |
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| 534 | // Allocate buffer |
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| 535 | uchar* pBuffer = new uchar[mWidth * mHeight * 3]; |
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| 536 | |
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| 537 | // Read pixels |
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| 538 | // I love GL: it does all the locking & colour conversion for us |
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| 539 | glReadPixels(0,0, mWidth, mHeight, GL_RGB, GL_UNSIGNED_BYTE, pBuffer); |
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| 540 | |
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| 541 | // Wrap buffer in a memory stream |
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| 542 | DataStreamPtr stream(new MemoryDataStream(pBuffer, mWidth * mHeight * 3, false)); |
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| 543 | |
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| 544 | // Need to flip the read data over in Y though |
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| 545 | Image img; |
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| 546 | img.loadRawData(stream, mWidth, mHeight, PF_BYTE_RGB ); |
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| 547 | img.flipAroundX(); |
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| 548 | |
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| 549 | MemoryDataStreamPtr streamFlipped(new MemoryDataStream(img.getData(), stream->size(), false)); |
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| 550 | |
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| 551 | // Get codec |
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| 552 | size_t pos = filename.find_last_of("."); |
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| 553 | String extension; |
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| 554 | if( pos == String::npos ) |
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| 555 | OGRE_EXCEPT( Exception::ERR_INVALIDPARAMS, "Unable to determine image type for '" |
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| 556 | + filename + "' - invalid extension.", "SDLWindow::writeContentsToFile" ); |
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| 557 | |
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| 558 | while( pos != filename.length() - 1 ) |
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| 559 | extension += filename[++pos]; |
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| 560 | |
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| 561 | // Get the codec |
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| 562 | Codec * pCodec = Codec::getCodec(extension); |
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| 563 | |
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| 564 | // Write out |
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| 565 | Codec::CodecDataPtr codecDataPtr(imgData); |
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| 566 | pCodec->codeToFile(streamFlipped, filename, codecDataPtr); |
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| 567 | |
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| 568 | delete [] pBuffer; |
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| 569 | } |
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| 570 | } |
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