[692] | 1 | #include "OgreRoot.h"
|
---|
| 2 | #include "OgreException.h"
|
---|
| 3 | #include "OgreLogManager.h"
|
---|
| 4 | #include "OgreStringConverter.h"
|
---|
| 5 |
|
---|
| 6 | #include <algorithm>
|
---|
| 7 |
|
---|
| 8 | #include "OgreWin32GLSupport.h"
|
---|
| 9 | #include "OgreGLTexture.h"
|
---|
| 10 | #include "OgreWin32Window.h"
|
---|
| 11 | #include <GL/wglext.h>
|
---|
| 12 | #include "OgreWin32RenderTexture.h"
|
---|
| 13 |
|
---|
| 14 | using namespace Ogre;
|
---|
| 15 |
|
---|
| 16 | GLenum wglewContextInit (Ogre::GLSupport *glSupport);
|
---|
| 17 |
|
---|
| 18 | namespace Ogre {
|
---|
| 19 | Win32GLSupport::Win32GLSupport():
|
---|
| 20 | mInitialWindow(0), mHasPixelFormatARB(0)
|
---|
| 21 | {
|
---|
| 22 | // immediately test WGL_ARB_pixel_format and FSAA support
|
---|
| 23 | // so we can set configuration options appropriately
|
---|
| 24 | initialiseWGL();
|
---|
| 25 | }
|
---|
| 26 |
|
---|
| 27 | template<class C> void remove_duplicates(C& c)
|
---|
| 28 | {
|
---|
| 29 | std::sort(c.begin(), c.end());
|
---|
| 30 | typename C::iterator p = std::unique(c.begin(), c.end());
|
---|
| 31 | c.erase(p, c.end());
|
---|
| 32 | }
|
---|
| 33 |
|
---|
| 34 | void Win32GLSupport::addConfig()
|
---|
| 35 | {
|
---|
| 36 | //TODO: EnumDisplayDevices http://msdn.microsoft.com/library/en-us/gdi/devcons_2303.asp
|
---|
| 37 | /*vector<string> DisplayDevices;
|
---|
| 38 | DISPLAY_DEVICE DisplayDevice;
|
---|
| 39 | DisplayDevice.cb = sizeof(DISPLAY_DEVICE);
|
---|
| 40 | DWORD i=0;
|
---|
| 41 | while (EnumDisplayDevices(NULL, i++, &DisplayDevice, 0) {
|
---|
| 42 | DisplayDevices.push_back(DisplayDevice.DeviceName);
|
---|
| 43 | }*/
|
---|
| 44 |
|
---|
| 45 | ConfigOption optFullScreen;
|
---|
| 46 | ConfigOption optVideoMode;
|
---|
| 47 | ConfigOption optColourDepth;
|
---|
| 48 | ConfigOption optDisplayFrequency;
|
---|
| 49 | ConfigOption optVSync;
|
---|
| 50 | ConfigOption optFSAA;
|
---|
| 51 | ConfigOption optRTTMode;
|
---|
| 52 |
|
---|
| 53 | // FS setting possiblities
|
---|
| 54 | optFullScreen.name = "Full Screen";
|
---|
| 55 | optFullScreen.possibleValues.push_back("Yes");
|
---|
| 56 | optFullScreen.possibleValues.push_back("No");
|
---|
| 57 | optFullScreen.currentValue = "Yes";
|
---|
| 58 | optFullScreen.immutable = false;
|
---|
| 59 |
|
---|
| 60 | // Video mode possiblities
|
---|
| 61 | DEVMODE DevMode;
|
---|
| 62 | DevMode.dmSize = sizeof(DEVMODE);
|
---|
| 63 | optVideoMode.name = "Video Mode";
|
---|
| 64 | optVideoMode.immutable = false;
|
---|
| 65 | for (DWORD i = 0; EnumDisplaySettings(NULL, i, &DevMode); ++i)
|
---|
| 66 | {
|
---|
| 67 | if (DevMode.dmBitsPerPel < 16 || DevMode.dmPelsHeight < 480)
|
---|
| 68 | continue;
|
---|
| 69 | mDevModes.push_back(DevMode);
|
---|
| 70 | char szBuf[16];
|
---|
| 71 | snprintf(szBuf, 16, "%d x %d", DevMode.dmPelsWidth, DevMode.dmPelsHeight);
|
---|
| 72 | optVideoMode.possibleValues.push_back(szBuf);
|
---|
| 73 | }
|
---|
| 74 | remove_duplicates(optVideoMode.possibleValues);
|
---|
| 75 | optVideoMode.currentValue = optVideoMode.possibleValues.front();
|
---|
| 76 |
|
---|
| 77 | optColourDepth.name = "Colour Depth";
|
---|
| 78 | optColourDepth.immutable = false;
|
---|
| 79 | optColourDepth.currentValue = "";
|
---|
| 80 |
|
---|
| 81 | optDisplayFrequency.name = "Display Frequency";
|
---|
| 82 | optDisplayFrequency.immutable = false;
|
---|
| 83 | optDisplayFrequency.currentValue = "";
|
---|
| 84 |
|
---|
| 85 | optVSync.name = "VSync";
|
---|
| 86 | optVSync.immutable = false;
|
---|
| 87 | optVSync.possibleValues.push_back("No");
|
---|
| 88 | optVSync.possibleValues.push_back("Yes");
|
---|
| 89 | optVSync.currentValue = "No";
|
---|
| 90 |
|
---|
| 91 | optFSAA.name = "FSAA";
|
---|
| 92 | optFSAA.immutable = false;
|
---|
| 93 | optFSAA.possibleValues.push_back("0");
|
---|
| 94 | for (std::vector<int>::iterator it = mFSAALevels.begin(); it != mFSAALevels.end(); ++it)
|
---|
| 95 | optFSAA.possibleValues.push_back(StringConverter::toString(*it));
|
---|
| 96 | optFSAA.currentValue = "0";
|
---|
| 97 |
|
---|
| 98 | optRTTMode.name = "RTT Preferred Mode";
|
---|
| 99 | optRTTMode.possibleValues.push_back("FBO");
|
---|
| 100 | optRTTMode.possibleValues.push_back("PBuffer");
|
---|
| 101 | optRTTMode.possibleValues.push_back("Copy");
|
---|
| 102 | optRTTMode.currentValue = "FBO";
|
---|
| 103 | optRTTMode.immutable = false;
|
---|
| 104 |
|
---|
| 105 |
|
---|
| 106 | mOptions[optFullScreen.name] = optFullScreen;
|
---|
| 107 | mOptions[optVideoMode.name] = optVideoMode;
|
---|
| 108 | mOptions[optColourDepth.name] = optColourDepth;
|
---|
| 109 | mOptions[optDisplayFrequency.name] = optDisplayFrequency;
|
---|
| 110 | mOptions[optVSync.name] = optVSync;
|
---|
| 111 | mOptions[optFSAA.name] = optFSAA;
|
---|
| 112 | mOptions[optRTTMode.name] = optRTTMode;
|
---|
| 113 |
|
---|
| 114 | refreshConfig();
|
---|
| 115 | }
|
---|
| 116 |
|
---|
| 117 | void Win32GLSupport::refreshConfig()
|
---|
| 118 | {
|
---|
| 119 | ConfigOptionMap::iterator optVideoMode = mOptions.find("Video Mode");
|
---|
| 120 | ConfigOptionMap::iterator moptColourDepth = mOptions.find("Colour Depth");
|
---|
| 121 | ConfigOptionMap::iterator moptDisplayFrequency = mOptions.find("Display Frequency");
|
---|
| 122 | if(optVideoMode == mOptions.end() || moptColourDepth == mOptions.end() || moptDisplayFrequency == mOptions.end())
|
---|
| 123 | OGRE_EXCEPT(999, "Can't find mOptions!", "Win32GLSupport::refreshConfig");
|
---|
| 124 | ConfigOption* optColourDepth = &moptColourDepth->second;
|
---|
| 125 | ConfigOption* optDisplayFrequency = &moptDisplayFrequency->second;
|
---|
| 126 |
|
---|
| 127 | const String& val = optVideoMode->second.currentValue;
|
---|
| 128 | String::size_type pos = val.find('x');
|
---|
| 129 | if (pos == String::npos)
|
---|
| 130 | OGRE_EXCEPT(999, "Invalid Video Mode provided", "Win32GLSupport::refreshConfig");
|
---|
| 131 | DWORD width = StringConverter::parseUnsignedInt(val.substr(0, pos));
|
---|
| 132 | DWORD height = StringConverter::parseUnsignedInt(val.substr(pos+1, String::npos));
|
---|
| 133 |
|
---|
| 134 | for(std::vector<DEVMODE>::const_iterator i = mDevModes.begin(); i != mDevModes.end(); ++i)
|
---|
| 135 | {
|
---|
| 136 | if (i->dmPelsWidth != width || i->dmPelsHeight != height)
|
---|
| 137 | continue;
|
---|
| 138 | optColourDepth->possibleValues.push_back(StringConverter::toString(i->dmBitsPerPel));
|
---|
| 139 | optDisplayFrequency->possibleValues.push_back(StringConverter::toString(i->dmDisplayFrequency));
|
---|
| 140 | }
|
---|
| 141 | remove_duplicates(optColourDepth->possibleValues);
|
---|
| 142 | remove_duplicates(optDisplayFrequency->possibleValues);
|
---|
| 143 | optColourDepth->currentValue = optColourDepth->possibleValues.back();
|
---|
| 144 | if (optDisplayFrequency->currentValue != "N/A")
|
---|
| 145 | optDisplayFrequency->currentValue = optDisplayFrequency->possibleValues.front();
|
---|
| 146 | }
|
---|
| 147 |
|
---|
| 148 | void Win32GLSupport::setConfigOption(const String &name, const String &value)
|
---|
| 149 | {
|
---|
| 150 | ConfigOptionMap::iterator it = mOptions.find(name);
|
---|
| 151 |
|
---|
| 152 | // Update
|
---|
| 153 | if(it != mOptions.end())
|
---|
| 154 | it->second.currentValue = value;
|
---|
| 155 | else
|
---|
| 156 | {
|
---|
| 157 | StringUtil::StrStreamType str;
|
---|
| 158 | str << "Option named '" << name << "' does not exist.";
|
---|
| 159 | OGRE_EXCEPT( Exception::ERR_INVALIDPARAMS, str.str(), "Win32GLSupport::setConfigOption" );
|
---|
| 160 | }
|
---|
| 161 |
|
---|
| 162 | if( name == "Video Mode" )
|
---|
| 163 | refreshConfig();
|
---|
| 164 |
|
---|
| 165 | if( name == "Full Screen" )
|
---|
| 166 | {
|
---|
| 167 | it = mOptions.find( "Display Frequency" );
|
---|
| 168 | if( value == "No" )
|
---|
| 169 | {
|
---|
| 170 | it->second.currentValue = "N/A";
|
---|
| 171 | it->second.immutable = true;
|
---|
| 172 | }
|
---|
| 173 | else
|
---|
| 174 | {
|
---|
| 175 | it->second.currentValue = it->second.possibleValues.front();
|
---|
| 176 | it->second.immutable = false;
|
---|
| 177 | }
|
---|
| 178 | }
|
---|
| 179 | }
|
---|
| 180 |
|
---|
| 181 | String Win32GLSupport::validateConfig()
|
---|
| 182 | {
|
---|
| 183 | // TODO, DX9
|
---|
| 184 | return String("");
|
---|
| 185 | }
|
---|
| 186 |
|
---|
| 187 | RenderWindow* Win32GLSupport::createWindow(bool autoCreateWindow, GLRenderSystem* renderSystem, const String& windowTitle)
|
---|
| 188 | {
|
---|
| 189 | if (autoCreateWindow)
|
---|
| 190 | {
|
---|
| 191 | ConfigOptionMap::iterator opt = mOptions.find("Full Screen");
|
---|
| 192 | if (opt == mOptions.end())
|
---|
| 193 | OGRE_EXCEPT(999, "Can't find full screen options!", "Win32GLSupport::createWindow");
|
---|
| 194 | bool fullscreen = (opt->second.currentValue == "Yes");
|
---|
| 195 |
|
---|
| 196 | opt = mOptions.find("Video Mode");
|
---|
| 197 | if (opt == mOptions.end())
|
---|
| 198 | OGRE_EXCEPT(999, "Can't find video mode options!", "Win32GLSupport::createWindow");
|
---|
| 199 | String val = opt->second.currentValue;
|
---|
| 200 | String::size_type pos = val.find('x');
|
---|
| 201 | if (pos == String::npos)
|
---|
| 202 | OGRE_EXCEPT(999, "Invalid Video Mode provided", "Win32GLSupport::createWindow");
|
---|
| 203 |
|
---|
| 204 | unsigned int w = StringConverter::parseUnsignedInt(val.substr(0, pos));
|
---|
| 205 | unsigned int h = StringConverter::parseUnsignedInt(val.substr(pos + 1));
|
---|
| 206 |
|
---|
| 207 | // Parse optional parameters
|
---|
| 208 | NameValuePairList winOptions;
|
---|
| 209 | opt = mOptions.find("Colour Depth");
|
---|
| 210 | if (opt == mOptions.end())
|
---|
| 211 | OGRE_EXCEPT(999, "Can't find Colour Depth options!", "Win32GLSupport::createWindow");
|
---|
| 212 | unsigned int colourDepth =
|
---|
| 213 | StringConverter::parseUnsignedInt(opt->second.currentValue);
|
---|
| 214 | winOptions["colourDepth"] = StringConverter::toString(colourDepth);
|
---|
| 215 |
|
---|
| 216 | opt = mOptions.find("VSync");
|
---|
| 217 | if (opt == mOptions.end())
|
---|
| 218 | OGRE_EXCEPT(999, "Can't find VSync options!", "Win32GLSupport::createWindow");
|
---|
| 219 | bool vsync = (opt->second.currentValue == "Yes");
|
---|
| 220 | winOptions["vsync"] = StringConverter::toString(vsync);
|
---|
| 221 | renderSystem->setWaitForVerticalBlank(vsync);
|
---|
| 222 |
|
---|
| 223 | opt = mOptions.find("FSAA");
|
---|
| 224 | if (opt == mOptions.end())
|
---|
| 225 | OGRE_EXCEPT(999, "Can't find FSAA options!", "Win32GLSupport::createWindow");
|
---|
| 226 | unsigned int multisample =
|
---|
| 227 | StringConverter::parseUnsignedInt(opt->second.currentValue);
|
---|
| 228 | winOptions["FSAA"] = StringConverter::toString(multisample);
|
---|
| 229 |
|
---|
| 230 | return renderSystem->createRenderWindow(windowTitle, w, h, fullscreen, &winOptions);
|
---|
| 231 | }
|
---|
| 232 | else
|
---|
| 233 | {
|
---|
| 234 | // XXX What is the else?
|
---|
| 235 | return NULL;
|
---|
| 236 | }
|
---|
| 237 | }
|
---|
| 238 |
|
---|
| 239 | RenderWindow* Win32GLSupport::newWindow(const String &name, unsigned int width,
|
---|
| 240 | unsigned int height, bool fullScreen, const NameValuePairList *miscParams)
|
---|
| 241 | {
|
---|
| 242 | ConfigOptionMap::iterator opt = mOptions.find("Display Frequency");
|
---|
| 243 | if (opt == mOptions.end())
|
---|
| 244 | OGRE_EXCEPT(999, "Can't find Display Frequency options!", "Win32GLSupport::newWindow");
|
---|
| 245 | unsigned int displayFrequency = StringConverter::parseUnsignedInt(opt->second.currentValue);
|
---|
| 246 |
|
---|
| 247 | Win32Window* window = new Win32Window(*this);
|
---|
| 248 | window->create(name, width, height, fullScreen, miscParams);
|
---|
| 249 |
|
---|
| 250 | if(!mInitialWindow)
|
---|
| 251 | mInitialWindow = window;
|
---|
| 252 | return window;
|
---|
| 253 | }
|
---|
| 254 |
|
---|
| 255 | void Win32GLSupport::start()
|
---|
| 256 | {
|
---|
| 257 | LogManager::getSingleton().logMessage("*** Starting Win32GL Subsystem ***");
|
---|
| 258 | }
|
---|
| 259 |
|
---|
| 260 | void Win32GLSupport::stop()
|
---|
| 261 | {
|
---|
| 262 | LogManager::getSingleton().logMessage("*** Stopping Win32GL Subsystem ***");
|
---|
| 263 | }
|
---|
| 264 |
|
---|
| 265 | void Win32GLSupport::initialiseExtensions() {
|
---|
| 266 | assert(mInitialWindow);
|
---|
| 267 | // First, initialise the normal extensions
|
---|
| 268 | GLSupport::initialiseExtensions();
|
---|
| 269 | // wglew init
|
---|
| 270 | wglewContextInit(this);
|
---|
| 271 |
|
---|
| 272 | // Check for W32 specific extensions probe function
|
---|
| 273 | PFNWGLGETEXTENSIONSSTRINGARBPROC _wglGetExtensionsStringARB =
|
---|
| 274 | (PFNWGLGETEXTENSIONSSTRINGARBPROC)wglGetProcAddress("wglGetExtensionsStringARB");
|
---|
| 275 | if(!_wglGetExtensionsStringARB)
|
---|
| 276 | return;
|
---|
| 277 | const char *wgl_extensions = _wglGetExtensionsStringARB(mInitialWindow->getHDC());
|
---|
| 278 | StringUtil::StrStreamType str;
|
---|
| 279 | str << "Supported WGL extensions: " << wgl_extensions;
|
---|
| 280 | LogManager::getSingleton().logMessage(
|
---|
| 281 | LML_NORMAL, str.str());
|
---|
| 282 | // Parse them, and add them to the main list
|
---|
| 283 | std::stringstream ext;
|
---|
| 284 | String instr;
|
---|
| 285 | ext << wgl_extensions;
|
---|
| 286 | while(ext >> instr)
|
---|
| 287 | {
|
---|
| 288 | extensionList.insert(instr);
|
---|
| 289 | }
|
---|
| 290 | }
|
---|
| 291 |
|
---|
| 292 |
|
---|
| 293 | void* Win32GLSupport::getProcAddress(const String& procname)
|
---|
| 294 | {
|
---|
| 295 | return (void*)wglGetProcAddress( procname.c_str() );
|
---|
| 296 | }
|
---|
| 297 | /*
|
---|
| 298 | RenderTexture * Win32GLSupport::createRenderTexture( const String & name,
|
---|
| 299 | unsigned int width, unsigned int height,
|
---|
| 300 | TextureType texType, PixelFormat internalFormat,
|
---|
| 301 | const NameValuePairList *miscParams )
|
---|
| 302 | {
|
---|
| 303 | #ifdef HW_RTT
|
---|
| 304 | bool useBind = checkExtension("WGL_ARB_render_texture");
|
---|
| 305 |
|
---|
| 306 | if(Root::getSingleton().getRenderSystem()->getCapabilities()->hasCapability(RSC_HWRENDER_TO_TEXTURE))
|
---|
| 307 | return new Win32RenderTexture(*this, name, width, height, texType,
|
---|
| 308 | internalFormat, miscParams, useBind);
|
---|
| 309 | else
|
---|
| 310 | #endif
|
---|
| 311 | return new GLRenderTexture(name, width, height, texType, internalFormat, miscParams);
|
---|
| 312 | }
|
---|
| 313 |
|
---|
| 314 | */
|
---|
| 315 | void Win32GLSupport::initialiseWGL()
|
---|
| 316 | {
|
---|
| 317 | // wglGetProcAddress does not work without an active OpenGL context,
|
---|
| 318 | // but we need wglChoosePixelFormatARB's address before we can
|
---|
| 319 | // create our main window. Thank you very much, Microsoft!
|
---|
| 320 | //
|
---|
| 321 | // The solution is to create a dummy OpenGL window first, and then
|
---|
| 322 | // test for WGL_ARB_pixel_format support. If it is not supported,
|
---|
| 323 | // we make sure to never call the ARB pixel format functions.
|
---|
| 324 | //
|
---|
| 325 | // If is is supported, we call the pixel format functions at least once
|
---|
| 326 | // to initialise them (pointers are stored by glprocs.h). We can also
|
---|
| 327 | // take this opportunity to enumerate the valid FSAA modes.
|
---|
| 328 |
|
---|
| 329 | LPCSTR dummyText = "OgreWglDummy";
|
---|
| 330 | HINSTANCE hinst = GetModuleHandle("RenderSystem_GL.dll");
|
---|
| 331 |
|
---|
| 332 | WNDCLASS dummyClass;
|
---|
| 333 | memset(&dummyClass, 0, sizeof(WNDCLASS));
|
---|
| 334 | dummyClass.style = CS_OWNDC;
|
---|
| 335 | dummyClass.hInstance = hinst;
|
---|
| 336 | dummyClass.lpfnWndProc = dummyWndProc;
|
---|
| 337 | dummyClass.lpszClassName = dummyText;
|
---|
| 338 | RegisterClass(&dummyClass);
|
---|
| 339 |
|
---|
| 340 | HWND hwnd = CreateWindow(dummyText, dummyText,
|
---|
| 341 | WS_POPUP | WS_CLIPCHILDREN | WS_CLIPSIBLINGS,
|
---|
| 342 | 0, 0, 32, 32, 0, 0, hinst, 0);
|
---|
| 343 |
|
---|
| 344 | // if a simple CreateWindow fails, then boy are we in trouble...
|
---|
| 345 | if (hwnd == NULL)
|
---|
| 346 | OGRE_EXCEPT(0, "CreateWindow() failed", "Win32GLSupport::initializeWGL");
|
---|
| 347 |
|
---|
| 348 |
|
---|
| 349 | // no chance of failure and no need to release thanks to CS_OWNDC
|
---|
| 350 | HDC hdc = GetDC(hwnd);
|
---|
| 351 |
|
---|
| 352 | // assign a simple OpenGL pixel format that everyone supports
|
---|
| 353 | PIXELFORMATDESCRIPTOR pfd;
|
---|
| 354 | memset(&pfd, 0, sizeof(PIXELFORMATDESCRIPTOR));
|
---|
| 355 | pfd.nSize = sizeof(PIXELFORMATDESCRIPTOR);
|
---|
| 356 | pfd.nVersion = 1;
|
---|
| 357 | pfd.cColorBits = 16;
|
---|
| 358 | pfd.cDepthBits = 15;
|
---|
| 359 | pfd.dwFlags = PFD_DRAW_TO_WINDOW|PFD_SUPPORT_OPENGL|PFD_DOUBLEBUFFER;
|
---|
| 360 | pfd.iPixelType = PFD_TYPE_RGBA;
|
---|
| 361 |
|
---|
| 362 | // if these fail, wglCreateContext will also quietly fail
|
---|
| 363 | int format;
|
---|
| 364 | if ((format = ChoosePixelFormat(hdc, &pfd)) != 0)
|
---|
| 365 | SetPixelFormat(hdc, format, &pfd);
|
---|
| 366 |
|
---|
| 367 | HGLRC hrc = wglCreateContext(hdc);
|
---|
| 368 | if (hrc)
|
---|
| 369 | {
|
---|
| 370 | // if wglMakeCurrent fails, wglGetProcAddress will return null
|
---|
| 371 | wglMakeCurrent(hdc, hrc);
|
---|
| 372 |
|
---|
| 373 | PFNWGLGETEXTENSIONSSTRINGARBPROC _wglGetExtensionsStringARB =
|
---|
| 374 | (PFNWGLGETEXTENSIONSSTRINGARBPROC)
|
---|
| 375 | wglGetProcAddress("wglGetExtensionsStringARB");
|
---|
| 376 |
|
---|
| 377 | // check for pixel format and multisampling support
|
---|
| 378 | bool hasMultisample = false;
|
---|
| 379 |
|
---|
| 380 | if (_wglGetExtensionsStringARB)
|
---|
| 381 | {
|
---|
| 382 | std::istringstream wglexts(_wglGetExtensionsStringARB(hdc));
|
---|
| 383 | std::string ext;
|
---|
| 384 | while (wglexts >> ext)
|
---|
| 385 | {
|
---|
| 386 | if (ext == "WGL_ARB_pixel_format")
|
---|
| 387 | mHasPixelFormatARB = true;
|
---|
| 388 | else if (ext == "WGL_ARB_multisample")
|
---|
| 389 | hasMultisample = true;
|
---|
| 390 | }
|
---|
| 391 | }
|
---|
| 392 |
|
---|
| 393 | if (mHasPixelFormatARB && hasMultisample)
|
---|
| 394 | {
|
---|
| 395 | // enumerate all 32-bit formats w/ multisampling
|
---|
| 396 | int iattr[] = {
|
---|
| 397 | WGL_DRAW_TO_WINDOW_ARB, GL_TRUE,
|
---|
| 398 | WGL_SUPPORT_OPENGL_ARB, GL_TRUE,
|
---|
| 399 | WGL_DOUBLE_BUFFER_ARB, GL_TRUE,
|
---|
| 400 | WGL_SAMPLE_BUFFERS_ARB, GL_TRUE,
|
---|
| 401 | WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB,
|
---|
| 402 | WGL_COLOR_BITS_ARB, 24,
|
---|
| 403 | WGL_ALPHA_BITS_ARB, 8,
|
---|
| 404 | WGL_DEPTH_BITS_ARB, 24,
|
---|
| 405 | WGL_STENCIL_BITS_ARB, 8,
|
---|
| 406 | WGL_SAMPLES_ARB, 2,
|
---|
| 407 | 0
|
---|
| 408 | };
|
---|
| 409 | int formats[256];
|
---|
| 410 | unsigned int count;
|
---|
| 411 | // cheating here. wglChoosePixelFormatARB procc address needed later on
|
---|
| 412 | // when a valid GL context does not exist and glew is not initialized yet.
|
---|
| 413 | __wglewChoosePixelFormatARB =
|
---|
| 414 | (PFNWGLCHOOSEPIXELFORMATARBPROC)wglGetProcAddress("wglChoosePixelFormatARB");
|
---|
| 415 | __wglewChoosePixelFormatARB(hdc, iattr, 0, 256, formats, &count);
|
---|
| 416 |
|
---|
| 417 | // determine what multisampling levels are offered
|
---|
| 418 | int query = WGL_SAMPLES_ARB, samples;
|
---|
| 419 | for (unsigned int i = 0; i < count; ++i)
|
---|
| 420 | {
|
---|
| 421 | PFNWGLGETPIXELFORMATATTRIBIVARBPROC _wglGetPixelFormatAttribivARB =
|
---|
| 422 | (PFNWGLGETPIXELFORMATATTRIBIVARBPROC)
|
---|
| 423 | wglGetProcAddress("wglGetPixelFormatAttribivARB");
|
---|
| 424 | if (_wglGetPixelFormatAttribivARB(hdc, formats[i],
|
---|
| 425 | 0, 1, &query, &samples))
|
---|
| 426 | mFSAALevels.push_back(samples);
|
---|
| 427 | }
|
---|
| 428 | remove_duplicates(mFSAALevels);
|
---|
| 429 | }
|
---|
| 430 |
|
---|
| 431 | wglMakeCurrent(0, 0);
|
---|
| 432 | wglDeleteContext(hrc);
|
---|
| 433 | }
|
---|
| 434 |
|
---|
| 435 | // clean up our dummy window and class
|
---|
| 436 | DestroyWindow(hwnd);
|
---|
| 437 | UnregisterClass(dummyText, hinst);
|
---|
| 438 | }
|
---|
| 439 |
|
---|
| 440 | LRESULT Win32GLSupport::dummyWndProc(HWND hwnd, UINT umsg, WPARAM wp, LPARAM lp)
|
---|
| 441 | {
|
---|
| 442 | return DefWindowProc(hwnd, umsg, wp, lp);
|
---|
| 443 | }
|
---|
| 444 |
|
---|
| 445 | bool Win32GLSupport::selectPixelFormat(HDC hdc, int colourDepth, int multisample)
|
---|
| 446 | {
|
---|
| 447 | PIXELFORMATDESCRIPTOR pfd;
|
---|
| 448 | memset(&pfd, 0, sizeof(pfd));
|
---|
| 449 | pfd.nSize = sizeof(pfd);
|
---|
| 450 | pfd.nVersion = 1;
|
---|
| 451 | pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
|
---|
| 452 | pfd.iPixelType = PFD_TYPE_RGBA;
|
---|
| 453 | pfd.cColorBits = (colourDepth > 16)? 24 : colourDepth;
|
---|
| 454 | pfd.cAlphaBits = (colourDepth > 16)? 8 : 0;
|
---|
| 455 | pfd.cDepthBits = 24;
|
---|
| 456 | pfd.cStencilBits = 8;
|
---|
| 457 |
|
---|
| 458 | int format = 0;
|
---|
| 459 |
|
---|
| 460 | if (multisample)
|
---|
| 461 | {
|
---|
| 462 | // only available at 32bpp with driver support
|
---|
| 463 | if (colourDepth < 32 || !mHasPixelFormatARB)
|
---|
| 464 | return false;
|
---|
| 465 |
|
---|
| 466 | int iattr[] = {
|
---|
| 467 | WGL_DRAW_TO_WINDOW_ARB, GL_TRUE,
|
---|
| 468 | WGL_SUPPORT_OPENGL_ARB, GL_TRUE,
|
---|
| 469 | WGL_DOUBLE_BUFFER_ARB, GL_TRUE,
|
---|
| 470 | WGL_SAMPLE_BUFFERS_ARB, GL_TRUE,
|
---|
| 471 | WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB,
|
---|
| 472 | WGL_COLOR_BITS_ARB, 24,
|
---|
| 473 | WGL_ALPHA_BITS_ARB, 8,
|
---|
| 474 | WGL_DEPTH_BITS_ARB, 24,
|
---|
| 475 | WGL_STENCIL_BITS_ARB, 8,
|
---|
| 476 | WGL_SAMPLES_ARB, multisample,
|
---|
| 477 | 0
|
---|
| 478 | };
|
---|
| 479 |
|
---|
| 480 | UINT nformats;
|
---|
| 481 | assert(__wglewChoosePixelFormatARB && "failed to get proc address for ChoosePixelFormatARB");
|
---|
| 482 | // ChoosePixelFormatARB proc address was obtained when setting up a dummy GL context in initialiseWGL()
|
---|
| 483 | // since glew hasn't been initialized yet, we have to cheat and use the previously obtained address
|
---|
| 484 | __wglewChoosePixelFormatARB(hdc, iattr, NULL, 1, &format, &nformats);
|
---|
| 485 | }
|
---|
| 486 | else
|
---|
| 487 | {
|
---|
| 488 | format = ChoosePixelFormat(hdc, &pfd);
|
---|
| 489 | }
|
---|
| 490 |
|
---|
| 491 | return (format != 0 && SetPixelFormat(hdc, format, &pfd));
|
---|
| 492 | }
|
---|
| 493 |
|
---|
| 494 | bool Win32GLSupport::supportsPBuffers()
|
---|
| 495 | {
|
---|
| 496 | return __WGLEW_ARB_pbuffer;
|
---|
| 497 | }
|
---|
| 498 | GLPBuffer *Win32GLSupport::createPBuffer(PixelComponentType format, size_t width, size_t height)
|
---|
| 499 | {
|
---|
| 500 | return new Win32PBuffer(format, width, height);
|
---|
| 501 | }
|
---|
| 502 | }
|
---|