src/gtk/glcanvas.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/gtk/glcanvas.cpp
   3 // Purpose:     wxGLCanvas, for using OpenGL/Mesa with wxWidgets and GTK
   4 // Author:      Robert Roebling
   5 // Modified by:
   6 // Created:     17/08/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Robert Roebling
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #if wxUSE_GLCANVAS
  16
  17 #include "wx/glcanvas.h"
  18
  19 #ifndef WX_PRECOMP
  20     #include "wx/app.h"
  21 #endif // WX_PRECOMP
  22
  23 #include "wx/frame.h"
  24 #include "wx/colour.h"
  25 #include "wx/module.h"
  26
  27 extern "C"
  28 {
  29 #include "gtk/gtk.h"
  30 #include "gdk/gdk.h"
  31 #include "gdk/gdkx.h"
  32 }
  33
  34 #include "wx/gtk/win_gtk.h"
  35 #include "wx/gtk/private.h"
  36
  37 // DLL options compatibility check:
  38 #include "wx/build.h"
  39 WX_CHECK_BUILD_OPTIONS("wxGL")
  40
  41
  42 //---------------------------------------------------------------------------
  43 // static variables
  44 //---------------------------------------------------------------------------
  45 int wxGLCanvas::m_glxVersion = 0;
  46
  47 //---------------------------------------------------------------------------
  48 // global data
  49 //---------------------------------------------------------------------------
  50
  51 XVisualInfo *g_vi = (XVisualInfo*) NULL;
  52
  53 //---------------------------------------------------------------------------
  54 // wxGLContext
  55 //---------------------------------------------------------------------------
  56
  57 IMPLEMENT_CLASS(wxGLContext,wxObject)
  58
  59 wxGLContext::wxGLContext( bool WXUNUSED(isRGB), wxWindow *win, const wxPalette& WXUNUSED(palette) )
  60 {
  61     m_window = win;
  62     m_widget = win->m_wxwindow;
  63
  64     wxGLCanvas *gc = (wxGLCanvas*) win;
  65
  66     if (wxGLCanvas::GetGLXVersion() >= 13)
  67     {
  68         // GLX >= 1.3
  69         GLXFBConfig *fbc = gc->m_fbc;
  70         wxCHECK_RET( fbc, _T("invalid GLXFBConfig for OpenGl") );
  71         m_glContext = glXCreateNewContext( GDK_DISPLAY(), fbc[0], GLX_RGBA_TYPE, None, GL_TRUE );
  72     }
  73     else
  74     {
  75         // GLX <= 1.2
  76         XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
  77         wxCHECK_RET( vi, _T("invalid visual for OpenGl") );
  78         m_glContext = glXCreateContext( GDK_DISPLAY(), vi, None, GL_TRUE );
  79     }
  80
  81     wxCHECK_RET( m_glContext, _T("Couldn't create OpenGl context") );
  82 }
  83
  84 wxGLContext::wxGLContext(
  85                bool WXUNUSED(isRGB), wxWindow *win,
  86                const wxPalette& WXUNUSED(palette),
  87                const wxGLContext *other        /* for sharing display lists */
  88 )
  89 {
  90     m_window = win;
  91     m_widget = win->m_wxwindow;
  92
  93     wxGLCanvas *gc = (wxGLCanvas*) win;
  94
  95     if (wxGLCanvas::GetGLXVersion() >= 13)
  96     {
  97         // GLX >= 1.3
  98         GLXFBConfig *fbc = gc->m_fbc;
  99         wxCHECK_RET( fbc, _T("invalid GLXFBConfig for OpenGl") );
 100         m_glContext = glXCreateNewContext( GDK_DISPLAY(), fbc[0], GLX_RGBA_TYPE,
 101                                            other ? other->m_glContext : None,
 102                                            GL_TRUE );
 103     }
 104     else
 105     {
 106         // GLX <= 1.2
 107         XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
 108         wxCHECK_RET( vi, _T("invalid visual for OpenGl") );
 109         m_glContext = glXCreateContext( GDK_DISPLAY(), vi,
 110                                         other ? other->m_glContext : None,
 111                                         GL_TRUE );
 112     }
 113
 114     if ( !m_glContext )
 115     {
 116         wxFAIL_MSG( _T("Couldn't create OpenGl context") );
 117     }
 118 }
 119
 120 wxGLContext::~wxGLContext()
 121 {
 122     if (!m_glContext) return;
 123
 124     if (m_glContext == glXGetCurrentContext())
 125     {
 126         if (wxGLCanvas::GetGLXVersion() >= 13)
 127             // GLX >= 1.3
 128             glXMakeContextCurrent( GDK_DISPLAY(), None, None, NULL);
 129         else
 130             // GLX <= 1.2
 131             glXMakeCurrent( GDK_DISPLAY(), None, NULL);
 132     }
 133
 134     glXDestroyContext( GDK_DISPLAY(), m_glContext );
 135 }
 136
 137 void wxGLContext::SwapBuffers()
 138 {
 139     if (m_glContext)
 140     {
 141         GdkWindow *window = GTK_PIZZA(m_widget)->bin_window;
 142         glXSwapBuffers( GDK_DISPLAY(), GDK_WINDOW_XWINDOW( window ) );
 143     }
 144 }
 145
 146 void wxGLContext::SetCurrent()
 147 {
 148     if (m_glContext)
 149     {
 150         GdkWindow *window = GTK_PIZZA(m_widget)->bin_window;
 151
 152         if (wxGLCanvas::GetGLXVersion() >= 13)
 153             // GLX >= 1.3
 154             glXMakeContextCurrent( GDK_DISPLAY(), GDK_WINDOW_XWINDOW(window),
 155                                    GDK_WINDOW_XWINDOW(window), m_glContext );
 156         else
 157             // GLX <= 1.2
 158             glXMakeCurrent( GDK_DISPLAY(), GDK_WINDOW_XWINDOW(window), m_glContext );
 159     }
 160 }
 161
 162 void wxGLContext::SetColour(const wxChar *colour)
 163 {
 164     wxColour col = wxTheColourDatabase->Find(colour);
 165     if (col.Ok())
 166     {
 167         float r = (float)(col.Red()/256.0);
 168         float g = (float)(col.Green()/256.0);
 169         float b = (float)(col.Blue()/256.0);
 170         glColor3f( r, g, b);
 171     }
 172 }
 173
 174 void wxGLContext::SetupPixelFormat()
 175 {
 176 }
 177
 178 void wxGLContext::SetupPalette( const wxPalette& WXUNUSED(palette) )
 179 {
 180 }
 181
 182 wxPalette wxGLContext::CreateDefaultPalette()
 183 {
 184     return wxNullPalette;
 185 }
 186
 187 //-----------------------------------------------------------------------------
 188 // "realize" from m_wxwindow
 189 //-----------------------------------------------------------------------------
 190
 191 extern "C" {
 192 static gint
 193 gtk_glwindow_realized_callback( GtkWidget *WXUNUSED(widget), wxGLCanvas *win )
 194 {
 195     if ( !win->m_glContext )
 196     {
 197         wxGLContext *share = win->m_sharedContext;
 198         if ( !share && win->m_sharedContextOf )
 199             share = win->m_sharedContextOf->GetContext();
 200
 201         win->m_glContext = new wxGLContext( TRUE, win, wxNullPalette, share );
 202     }
 203
 204     return FALSE;
 205 }
 206 }
 207
 208 //-----------------------------------------------------------------------------
 209 // "map" from m_wxwindow
 210 //-----------------------------------------------------------------------------
 211
 212 extern "C" {
 213 static gint
 214 gtk_glwindow_map_callback( GtkWidget * WXUNUSED(widget), wxGLCanvas *win )
 215 {
 216     if (win->m_glContext/* && win->m_exposed*/)
 217     {
 218         wxPaintEvent event( win->GetId() );
 219         event.SetEventObject( win );
 220         win->GetEventHandler()->ProcessEvent( event );
 221
 222         win->m_exposed = false;
 223         win->GetUpdateRegion().Clear();
 224     }
 225
 226     return FALSE;
 227 }
 228 }
 229
 230 //-----------------------------------------------------------------------------
 231 // "expose_event" of m_wxwindow
 232 //-----------------------------------------------------------------------------
 233
 234 extern "C" {
 235 static void
 236 gtk_glwindow_expose_callback( GtkWidget *WXUNUSED(widget), GdkEventExpose *gdk_event, wxGLCanvas *win )
 237 {
 238     if (g_isIdle)
 239         wxapp_install_idle_handler();
 240
 241     win->m_exposed = true;
 242
 243     win->GetUpdateRegion().Union( gdk_event->area.x,
 244                                   gdk_event->area.y,
 245                                   gdk_event->area.width,
 246                                   gdk_event->area.height );
 247 }
 248 }
 249
 250 //-----------------------------------------------------------------------------
 251 // "size_allocate" of m_wxwindow
 252 //-----------------------------------------------------------------------------
 253
 254 extern "C" {
 255 static void
 256 gtk_glcanvas_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxGLCanvas *win )
 257 {
 258     if (g_isIdle)
 259         wxapp_install_idle_handler();
 260
 261     if (!win->m_hasVMT)
 262         return;
 263
 264     wxSizeEvent event( wxSize(win->m_width,win->m_height), win->GetId() );
 265     event.SetEventObject( win );
 266     win->GetEventHandler()->ProcessEvent( event );
 267 }
 268 }
 269
 270 //---------------------------------------------------------------------------
 271 // wxGlCanvas
 272 //---------------------------------------------------------------------------
 273
 274 IMPLEMENT_CLASS(wxGLCanvas, wxWindow)
 275
 276 BEGIN_EVENT_TABLE(wxGLCanvas, wxWindow)
 277     EVT_SIZE(wxGLCanvas::OnSize)
 278 END_EVENT_TABLE()
 279
 280 wxGLCanvas::wxGLCanvas( wxWindow *parent, wxWindowID id,
 281                         const wxPoint& pos, const wxSize& size,
 282                         long style, const wxString& name,
 283                         int *attribList,
 284                         const wxPalette& palette )
 285 {
 286     Create( parent, NULL, NULL, id, pos, size, style, name, attribList, palette );
 287 }
 288
 289 wxGLCanvas::wxGLCanvas( wxWindow *parent,
 290                         const wxGLContext *shared,
 291                         wxWindowID id,
 292                         const wxPoint& pos, const wxSize& size,
 293                         long style, const wxString& name,
 294                         int *attribList,
 295                         const wxPalette& palette )
 296 {
 297     Create( parent, shared, NULL, id, pos, size, style, name, attribList, palette );
 298 }
 299
 300 wxGLCanvas::wxGLCanvas( wxWindow *parent,
 301                         const wxGLCanvas *shared,
 302                         wxWindowID id,
 303                         const wxPoint& pos, const wxSize& size,
 304                         long style, const wxString& name,
 305                         int *attribList,
 306                         const wxPalette& palette )
 307 {
 308     Create( parent, NULL, shared, id, pos, size, style, name, attribList, palette );
 309 }
 310
 311 bool wxGLCanvas::Create( wxWindow *parent,
 312                          const wxGLContext *shared,
 313                          const wxGLCanvas *shared_context_of,
 314                          wxWindowID id,
 315                          const wxPoint& pos, const wxSize& size,
 316                          long style, const wxString& name,
 317                          int *attribList,
 318                          const wxPalette& palette)
 319 {
 320     m_sharedContext = (wxGLContext*)shared;  // const_cast
 321     m_sharedContextOf = (wxGLCanvas*)shared_context_of;  // const_cast
 322     m_glContext = (wxGLContext*) NULL;
 323
 324     m_exposed = false;
 325     m_noExpose = true;
 326     m_nativeSizeEvent = true;
 327     m_fbc = NULL;
 328     m_vi = NULL;
 329
 330     // to be sure the glx version is known
 331     wxGLCanvas::QueryGLXVersion();
 332
 333     if (wxGLCanvas::GetGLXVersion() >= 13)
 334     {
 335         // GLX >= 1.3 uses a GLXFBConfig
 336         GLXFBConfig * fbc = NULL;
 337         if (wxTheApp->m_glFBCInfo != NULL)
 338         {
 339             fbc = (GLXFBConfig *) wxTheApp->m_glFBCInfo;
 340             m_canFreeFBC = false; // owned by wxTheApp - don't free upon destruction
 341         }
 342         else
 343         {
 344             fbc = (GLXFBConfig *) wxGLCanvas::ChooseGLFBC(attribList);
 345             m_canFreeFBC = true;
 346         }
 347         m_fbc = fbc;  // save for later use
 348         wxCHECK_MSG( m_fbc, false, _T("required FBConfig couldn't be found") );
 349     }
 350
 351     XVisualInfo *vi = NULL;
 352     if (wxTheApp->m_glVisualInfo != NULL)
 353     {
 354         vi = (XVisualInfo *)wxTheApp->m_glVisualInfo;
 355         m_canFreeVi = false; // owned by wxTheApp - don't free upon destruction
 356     }
 357     else
 358     {
 359         if (wxGLCanvas::GetGLXVersion() >= 13)
 360         // GLX >= 1.3
 361             vi = glXGetVisualFromFBConfig(GDK_DISPLAY(), m_fbc[0]);
 362         else
 363             // GLX <= 1.2
 364             vi = (XVisualInfo *) ChooseGLVisual(attribList);
 365
 366         m_canFreeVi = true;
 367     }
 368
 369     m_vi = vi;  // save for later use
 370
 371     wxCHECK_MSG( m_vi, false, _T("required visual couldn't be found") );
 372     GdkVisual *visual;
 373     GdkColormap *colormap;
 374
 375     // MR: This needs a fix for lower gtk+ versions too. Might need to rethink logic (FIXME)
 376 #if defined(__WXGTK20__) && GTK_CHECK_VERSION(2,2,0)
 377     if (!gtk_check_version(2,2,0))
 378     {
 379         wxWindow::Create( parent, id, pos, size, style, name );
 380
 381         m_glWidget = m_wxwindow;
 382
 383         GdkScreen *screen = gtk_widget_get_screen( m_glWidget );
 384         colormap = gdk_screen_get_default_colormap(screen);
 385         visual = gdk_colormap_get_visual(colormap);
 386
 387         if (GDK_VISUAL_XVISUAL(visual)->visualid != vi->visualid)
 388         {
 389             visual = gdk_x11_screen_lookup_visual( screen, vi->visualid );
 390             colormap = gdk_colormap_new(visual, FALSE);
 391         }
 392
 393         gtk_widget_set_colormap( m_glWidget, colormap );
 394     }
 395     else
 396 #endif
 397     {
 398         visual = gdkx_visual_get( vi->visualid );
 399         colormap = gdk_colormap_new( visual, TRUE );
 400
 401         gtk_widget_push_colormap( colormap );
 402
 403         wxWindow::Create( parent, id, pos, size, style, name );
 404         m_glWidget = m_wxwindow;
 405     }
 406
 407     gtk_widget_set_double_buffered( m_glWidget, FALSE );
 408
 409     gtk_pizza_set_clear( GTK_PIZZA(m_wxwindow), FALSE );
 410
 411     g_signal_connect (m_wxwindow, "realize",
 412                       G_CALLBACK (gtk_glwindow_realized_callback),
 413                       this);
 414     g_signal_connect (m_wxwindow, "map",
 415                       G_CALLBACK (gtk_glwindow_map_callback),
 416                       this);
 417     g_signal_connect (m_wxwindow, "expose_event",
 418                       G_CALLBACK (gtk_glwindow_expose_callback),
 419                       this);
 420     g_signal_connect (m_widget, "size_allocate",
 421                       G_CALLBACK (gtk_glcanvas_size_callback),
 422                       this);
 423
 424     if (gtk_check_version(2,2,0) != NULL)
 425     {
 426         gtk_widget_pop_colormap();
 427     }
 428
 429     // if our parent window is already visible, we had been realized before we
 430     // connected to the "realize" signal and hence our m_glContext hasn't been
 431     // initialized yet and we have to do it now
 432     if (GTK_WIDGET_REALIZED(m_wxwindow))
 433         gtk_glwindow_realized_callback( m_wxwindow, this );
 434
 435     if (GTK_WIDGET_MAPPED(m_wxwindow))
 436         gtk_glwindow_map_callback( m_wxwindow, this );
 437
 438     return true;
 439 }
 440
 441 wxGLCanvas::~wxGLCanvas()
 442 {
 443     GLXFBConfig * fbc = (GLXFBConfig *) m_fbc;
 444     if (fbc && m_canFreeFBC)
 445         XFree( fbc );
 446
 447     XVisualInfo *vi = (XVisualInfo *) m_vi;
 448     if (vi && m_canFreeVi)
 449         XFree( vi );
 450
 451     delete m_glContext;
 452 }
 453
 454 void* wxGLCanvas::ChooseGLVisual(int *attribList)
 455 {
 456     int data[512];
 457     GetGLAttribListFromWX( attribList, data );
 458     attribList = (int*) data;
 459
 460     Display *dpy = GDK_DISPLAY();
 461
 462     return glXChooseVisual( dpy, DefaultScreen(dpy), attribList );
 463 }
 464
 465 void* wxGLCanvas::ChooseGLFBC(int *attribList)
 466 {
 467     int data[512];
 468     GetGLAttribListFromWX( attribList, data );
 469     attribList = (int*) data;
 470
 471     int returned;
 472     return glXChooseFBConfig( GDK_DISPLAY(), DefaultScreen(GDK_DISPLAY()),
 473                               attribList, &returned );
 474 }
 475
 476
 477 void wxGLCanvas::GetGLAttribListFromWX(int *wx_attribList, int *gl_attribList )
 478 {
 479     if (!wx_attribList)
 480     {
 481         if (wxGLCanvas::GetGLXVersion() >= 13)
 482         // leave GLX >= 1.3 choose the default attributes
 483             gl_attribList[0] = 0;
 484         else
 485         {
 486             int i = 0;
 487             // default settings if attriblist = 0
 488             gl_attribList[i++] = GLX_RGBA;
 489             gl_attribList[i++] = GLX_DOUBLEBUFFER;
 490             gl_attribList[i++] = GLX_DEPTH_SIZE;   gl_attribList[i++] = 1;
 491             gl_attribList[i++] = GLX_RED_SIZE;     gl_attribList[i++] = 1;
 492             gl_attribList[i++] = GLX_GREEN_SIZE;   gl_attribList[i++] = 1;
 493             gl_attribList[i++] = GLX_BLUE_SIZE;    gl_attribList[i++] = 1;
 494             gl_attribList[i++] = GLX_ALPHA_SIZE;   gl_attribList[i++] = 0;
 495             gl_attribList[i++] = None;
 496         }
 497     }
 498     else
 499     {
 500         int arg=0, p=0;
 501         while( (wx_attribList[arg]!=0) && (p<510) )
 502         {
 503             switch( wx_attribList[arg++] )
 504             {
 505                 case WX_GL_RGBA:
 506                     if (wxGLCanvas::GetGLXVersion() <= 12)
 507                         // for GLX >= 1.3, GLX_RGBA is useless (setting this flags will crash on most opengl implm)
 508                         gl_attribList[p++] = GLX_RGBA;
 509                     break;
 510                 case WX_GL_BUFFER_SIZE:
 511                     gl_attribList[p++] = GLX_BUFFER_SIZE;
 512                     gl_attribList[p++] = wx_attribList[arg++];
 513                     break;
 514                 case WX_GL_LEVEL:
 515                     gl_attribList[p++] = GLX_LEVEL;
 516                     gl_attribList[p++] = wx_attribList[arg++];
 517                     break;
 518                 case WX_GL_DOUBLEBUFFER:
 519                     if (wxGLCanvas::GetGLXVersion() <= 12)
 520                         gl_attribList[p++] = GLX_DOUBLEBUFFER;
 521                     else
 522                         // for GLX >= 1.3, GLX_DOUBLEBUFFER format is different (1 <=> True)
 523                         // it seems this flag is useless for some hardware opengl implementation.
 524                         // but for Mesa 6.2.1, this flag is used so don't ignore it.
 525                         gl_attribList[p++] = GLX_DOUBLEBUFFER;
 526                     gl_attribList[p++] = 1;
 527                     break;
 528                 case WX_GL_STEREO:
 529                     gl_attribList[p++] = GLX_STEREO;
 530                     break;
 531                 case WX_GL_AUX_BUFFERS:
 532                     gl_attribList[p++] = GLX_AUX_BUFFERS;
 533                     gl_attribList[p++] = wx_attribList[arg++];
 534                     break;
 535                 case WX_GL_MIN_RED:
 536                     gl_attribList[p++] = GLX_RED_SIZE;
 537                     gl_attribList[p++] = wx_attribList[arg++];
 538                     break;
 539                 case WX_GL_MIN_GREEN:
 540                     gl_attribList[p++] = GLX_GREEN_SIZE;
 541                     gl_attribList[p++] = wx_attribList[arg++];
 542                     break;
 543                 case WX_GL_MIN_BLUE:
 544                     gl_attribList[p++] = GLX_BLUE_SIZE;
 545                     gl_attribList[p++] = wx_attribList[arg++];
 546                     break;
 547                 case WX_GL_MIN_ALPHA:
 548                     gl_attribList[p++] = GLX_ALPHA_SIZE;
 549                     gl_attribList[p++] = wx_attribList[arg++];
 550                     break;
 551                 case WX_GL_DEPTH_SIZE:
 552                     gl_attribList[p++] = GLX_DEPTH_SIZE;
 553                     gl_attribList[p++] = wx_attribList[arg++];
 554                     break;
 555                 case WX_GL_STENCIL_SIZE:
 556                     gl_attribList[p++] = GLX_STENCIL_SIZE;
 557                     gl_attribList[p++] = wx_attribList[arg++];
 558                     break;
 559                 case WX_GL_MIN_ACCUM_RED:
 560                     gl_attribList[p++] = GLX_ACCUM_RED_SIZE;
 561                     gl_attribList[p++] = wx_attribList[arg++];
 562                     break;
 563                 case WX_GL_MIN_ACCUM_GREEN:
 564                     gl_attribList[p++] = GLX_ACCUM_GREEN_SIZE;
 565                     gl_attribList[p++] = wx_attribList[arg++];
 566                     break;
 567                 case WX_GL_MIN_ACCUM_BLUE:
 568                     gl_attribList[p++] = GLX_ACCUM_BLUE_SIZE;
 569                     gl_attribList[p++] = wx_attribList[arg++];
 570                     break;
 571                 case WX_GL_MIN_ACCUM_ALPHA:
 572                     gl_attribList[p++] = GLX_ACCUM_ALPHA_SIZE;
 573                     gl_attribList[p++] = wx_attribList[arg++];
 574                     break;
 575                 default:
 576                     break;
 577             }
 578         }
 579
 580         gl_attribList[p] = 0;
 581     }
 582 }
 583
 584 void wxGLCanvas::QueryGLXVersion()
 585 {
 586     if (m_glxVersion == 0)
 587     {
 588         // check the GLX version
 589         int glxMajorVer, glxMinorVer;
 590         bool ok = glXQueryVersion(GDK_DISPLAY(), &glxMajorVer, &glxMinorVer);
 591         wxASSERT_MSG( ok, _T("GLX version not found") );
 592         if (!ok)
 593             m_glxVersion = 10; // 1.0 by default
 594         else
 595             m_glxVersion = glxMajorVer*10 + glxMinorVer;
 596     }
 597 }
 598
 599 int wxGLCanvas::GetGLXVersion()
 600 {
 601     wxASSERT_MSG( m_glxVersion>0, _T("GLX version has not been initialized with wxGLCanvas::QueryGLXVersion()") );
 602     return m_glxVersion;
 603 }
 604
 605
 606 void wxGLCanvas::SwapBuffers()
 607 {
 608     if (m_glContext)
 609         m_glContext->SwapBuffers();
 610 }
 611
 612 void wxGLCanvas::OnSize(wxSizeEvent& WXUNUSED(event))
 613 {
 614 }
 615
 616 void wxGLCanvas::SetCurrent()
 617 {
 618     if (m_glContext)
 619         m_glContext->SetCurrent();
 620 }
 621
 622 void wxGLCanvas::SetColour( const wxChar *colour )
 623 {
 624     if (m_glContext)
 625         m_glContext->SetColour( colour );
 626 }
 627
 628 void wxGLCanvas::OnInternalIdle()
 629 {
 630     if (m_glContext && m_exposed)
 631     {
 632         wxPaintEvent event( GetId() );
 633         event.SetEventObject( this );
 634         GetEventHandler()->ProcessEvent( event );
 635
 636         m_exposed = false;
 637         GetUpdateRegion().Clear();
 638     }
 639
 640     wxWindow::OnInternalIdle();
 641 }
 642
 643
 644
 645 //---------------------------------------------------------------------------
 646 // wxGLApp
 647 //---------------------------------------------------------------------------
 648
 649 IMPLEMENT_CLASS(wxGLApp, wxApp)
 650
 651 wxGLApp::~wxGLApp()
 652 {
 653     if (m_glFBCInfo)
 654         XFree(m_glFBCInfo);
 655     if (m_glVisualInfo)
 656         XFree(m_glVisualInfo);
 657 }
 658
 659 bool wxGLApp::InitGLVisual(int *attribList)
 660 {
 661     wxGLCanvas::QueryGLXVersion();
 662
 663     if (wxGLCanvas::GetGLXVersion() >= 13)
 664     {
 665         // GLX >= 1.3
 666         if (m_glFBCInfo)
 667             XFree(m_glFBCInfo);
 668         m_glFBCInfo = wxGLCanvas::ChooseGLFBC(attribList);
 669
 670         if (m_glFBCInfo)
 671         {
 672             if (m_glVisualInfo)
 673                 XFree(m_glVisualInfo);
 674             m_glVisualInfo = glXGetVisualFromFBConfig(GDK_DISPLAY(), ((GLXFBConfig *)m_glFBCInfo)[0]);
 675         }
 676         return (m_glFBCInfo != NULL) && (m_glVisualInfo != NULL);
 677     }
 678     else
 679     {
 680         // GLX <= 1.2
 681         if (m_glVisualInfo)
 682             XFree(m_glVisualInfo);
 683         m_glVisualInfo = wxGLCanvas::ChooseGLVisual(attribList);
 684         return m_glVisualInfo != NULL;
 685     }
 686 }
 687
 688 #endif
 689     // wxUSE_GLCANVAS