/////////////////////////////////////////////////////////////////////////////
// Name: gtk/glcanvas.cpp
-// Purpose: wxGLCanvas, for using OpenGL/Mesa with wxWindows and GTK
+// Purpose: wxGLCanvas, for using OpenGL/Mesa with wxWidgets and GTK
// Author: Robert Roebling
// Modified by:
// Created: 17/08/98
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "glcanvas.h"
-#endif
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
#include "wx/setup.h"
#include "wx/gtk/win_gtk.h"
+// DLL options compatibility check:
+#include "wx/build.h"
+WX_CHECK_BUILD_OPTIONS("wxGL")
+
+
+//---------------------------------------------------------------------------
+// static variables
+//---------------------------------------------------------------------------
+int wxGLCanvas::m_glxVersion = 0;
+
//---------------------------------------------------------------------------
// global data
//---------------------------------------------------------------------------
XVisualInfo *g_vi = (XVisualInfo*) NULL;
-
//-----------------------------------------------------------------------------
// idle system
//-----------------------------------------------------------------------------
m_widget = win->m_wxwindow;
wxGLCanvas *gc = (wxGLCanvas*) win;
- XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
-
- wxCHECK_RET( vi, _T("invalid visual for OpenGl") );
- m_glContext = glXCreateContext( GDK_DISPLAY(), vi, None, GL_TRUE );
+ if (wxGLCanvas::GetGLXVersion() >= 13)
+ {
+ // GLX >= 1.3
+ GLXFBConfig *fbc = gc->m_fbc;
+ wxCHECK_RET( fbc, _T("invalid GLXFBConfig for OpenGl") );
+ m_glContext = glXCreateNewContext( GDK_DISPLAY(), fbc[0], GLX_RGBA_TYPE, None, GL_TRUE );
+ }
+ else
+ {
+ // GLX <= 1.2
+ XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
+ wxCHECK_RET( vi, _T("invalid visual for OpenGl") );
+ m_glContext = glXCreateContext( GDK_DISPLAY(), vi, None, GL_TRUE );
+ }
wxCHECK_RET( m_glContext, _T("Couldn't create OpenGl context") );
}
m_widget = win->m_wxwindow;
wxGLCanvas *gc = (wxGLCanvas*) win;
- XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
-
- wxCHECK_RET( vi, _T("invalid visual for OpenGl") );
- m_glContext = glXCreateContext( GDK_DISPLAY(), vi,
- other ? other->m_glContext : None,
- GL_TRUE );
+ if (wxGLCanvas::GetGLXVersion() >= 13)
+ {
+ // GLX >= 1.3
+ GLXFBConfig *fbc = gc->m_fbc;
+ wxCHECK_RET( fbc, _T("invalid GLXFBConfig for OpenGl") );
+ m_glContext = glXCreateNewContext( GDK_DISPLAY(), fbc[0], GLX_RGBA_TYPE,
+ other ? other->m_glContext : None,
+ GL_TRUE );
+ }
+ else
+ {
+ // GLX <= 1.2
+ XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
+ wxCHECK_RET( vi, _T("invalid visual for OpenGl") );
+ m_glContext = glXCreateContext( GDK_DISPLAY(), vi,
+ other ? other->m_glContext : None,
+ GL_TRUE );
+ }
if ( !m_glContext )
{
if (m_glContext == glXGetCurrentContext())
{
- glXMakeCurrent( GDK_DISPLAY(), None, NULL);
+ if (wxGLCanvas::GetGLXVersion() >= 13)
+ // GLX >= 1.3
+ glXMakeContextCurrent( GDK_DISPLAY(), None, None, NULL);
+ else
+ // GLX <= 1.2
+ glXMakeCurrent( GDK_DISPLAY(), None, NULL);
}
glXDestroyContext( GDK_DISPLAY(), m_glContext );
if (m_glContext)
{
GdkWindow *window = GTK_PIZZA(m_widget)->bin_window;
- glXMakeCurrent( GDK_DISPLAY(), GDK_WINDOW_XWINDOW(window), m_glContext );
+
+ if (wxGLCanvas::GetGLXVersion() >= 13)
+ // GLX >= 1.3
+ glXMakeContextCurrent( GDK_DISPLAY(), GDK_WINDOW_XWINDOW(window),
+ GDK_WINDOW_XWINDOW(window), m_glContext );
+ else
+ // GLX <= 1.2
+ glXMakeCurrent( GDK_DISPLAY(), GDK_WINDOW_XWINDOW(window), m_glContext );
}
}
void wxGLContext::SetColour(const wxChar *colour)
{
- float r = 0.0;
- float g = 0.0;
- float b = 0.0;
- wxColour *col = wxTheColourDatabase->FindColour(colour);
- if (col)
+ wxColour col = wxTheColourDatabase->Find(colour);
+ if (col.Ok())
{
- r = (float)(col->Red()/256.0);
- g = (float)(col->Green()/256.0);
- b = (float)(col->Blue()/256.0);
+ float r = (float)(col.Red()/256.0);
+ float g = (float)(col.Green()/256.0);
+ float b = (float)(col.Blue()/256.0);
glColor3f( r, g, b);
}
}
// "realize" from m_wxwindow
//-----------------------------------------------------------------------------
+extern "C" {
static gint
-gtk_glwindow_realized_callback( GtkWidget * WXUNUSED(widget), wxGLCanvas *win )
+gtk_glwindow_realized_callback( GtkWidget *WXUNUSED(widget), wxGLCanvas *win )
{
- wxGLContext *share= win->m_sharedContext;
- if (share==NULL && win->m_sharedContextOf) share=win->m_sharedContextOf->GetContext();
+ if ( !win->m_glContext )
+ {
+ wxGLContext *share = win->m_sharedContext;
+ if ( !share && win->m_sharedContextOf )
+ share = win->m_sharedContextOf->GetContext();
- win->m_glContext = new wxGLContext( TRUE, win, wxNullPalette, share );
+ win->m_glContext = new wxGLContext( TRUE, win, wxNullPalette, share );
+ }
return FALSE;
}
+}
//-----------------------------------------------------------------------------
// "map" from m_wxwindow
//-----------------------------------------------------------------------------
+extern "C" {
static gint
gtk_glwindow_map_callback( GtkWidget * WXUNUSED(widget), wxGLCanvas *win )
{
return FALSE;
}
+}
//-----------------------------------------------------------------------------
// "expose_event" of m_wxwindow
//-----------------------------------------------------------------------------
+extern "C" {
static void
gtk_glwindow_expose_callback( GtkWidget *WXUNUSED(widget), GdkEventExpose *gdk_event, wxGLCanvas *win )
{
gdk_event->area.width,
gdk_event->area.height );
}
+}
//-----------------------------------------------------------------------------
// "draw" of m_wxwindow
//-----------------------------------------------------------------------------
#ifndef __WXGTK20__
+extern "C" {
static void
gtk_glwindow_draw_callback( GtkWidget *WXUNUSED(widget), GdkRectangle *rect, wxGLCanvas *win )
{
win->GetUpdateRegion().Union( rect->x, rect->y,
rect->width, rect->height );
}
+}
#endif
//-----------------------------------------------------------------------------
// "size_allocate" of m_wxwindow
//-----------------------------------------------------------------------------
+extern "C" {
static void
gtk_glcanvas_size_callback( GtkWidget *WXUNUSED(widget), GtkAllocation* alloc, wxGLCanvas *win )
{
event.SetEventObject( win );
win->GetEventHandler()->ProcessEvent( event );
}
+}
//---------------------------------------------------------------------------
// wxGlCanvas
m_exposed = FALSE;
m_noExpose = TRUE;
m_nativeSizeEvent = TRUE;
+ m_fbc = NULL;
+ m_vi = NULL;
+
+ // to be sure the glx version is known
+ wxGLCanvas::QueryGLXVersion();
+
+ if (wxGLCanvas::GetGLXVersion() >= 13)
+ {
+ // GLX >= 1.3 uses a GLXFBConfig
+ GLXFBConfig * fbc = NULL;
+ if (wxTheApp->m_glFBCInfo != NULL)
+ {
+ fbc = (GLXFBConfig *) wxTheApp->m_glFBCInfo;
+ m_canFreeFBC = FALSE; // owned by wxTheApp - don't free upon destruction
+ }
+ else
+ {
+ fbc = (GLXFBConfig *) wxGLCanvas::ChooseGLFBC(attribList);
+ m_canFreeFBC = TRUE;
+ }
+ m_fbc = fbc; // save for later use
+ wxCHECK_MSG( m_fbc, FALSE, _T("required FBConfig couldn't be found") );
+ }
XVisualInfo *vi = NULL;
if (wxTheApp->m_glVisualInfo != NULL)
{
- vi = (XVisualInfo *) wxTheApp->m_glVisualInfo;
+ vi = (XVisualInfo *)wxTheApp->m_glVisualInfo;
m_canFreeVi = FALSE; // owned by wxTheApp - don't free upon destruction
}
else
{
- vi = (XVisualInfo *) ChooseGLVisual(attribList);
+ if (wxGLCanvas::GetGLXVersion() >= 13)
+ // GLX >= 1.3
+ vi = glXGetVisualFromFBConfig(GDK_DISPLAY(), m_fbc[0]);
+ else
+ // GLX <= 1.2
+ vi = (XVisualInfo *) ChooseGLVisual(attribList);
+
m_canFreeVi = TRUE;
}
+
m_vi = vi; // save for later use
wxCHECK_MSG( m_vi, FALSE, _T("required visual couldn't be found") );
+ GdkVisual *visual;
+ GdkColormap *colormap;
- GdkVisual *visual = gdkx_visual_get( vi->visualid );
- GdkColormap *colormap = gdk_colormap_new( gdkx_visual_get(vi->visualid), TRUE );
+ // MR: This needs a fix for lower gtk+ versions too. Might need to rethink logic (FIXME)
+#if defined(__WXGTK20__) && GTK_CHECK_VERSION(2,2,0)
+ if (!gtk_check_version(2,2,0))
+ {
+ wxWindow::Create( parent, id, pos, size, style, name );
- gtk_widget_push_colormap( colormap );
- gtk_widget_push_visual( visual );
+ m_glWidget = m_wxwindow;
- wxWindow::Create( parent, id, pos, size, style, name );
+ GdkScreen *screen = gtk_widget_get_screen( m_glWidget );
+ colormap = gdk_screen_get_default_colormap(screen);
+ visual = gdk_colormap_get_visual(colormap);
- m_glWidget = m_wxwindow;
+ if (GDK_VISUAL_XVISUAL(visual)->visualid != vi->visualid)
+ {
+ visual = gdk_x11_screen_lookup_visual( screen, vi->visualid );
+ colormap = gdk_colormap_new(visual, FALSE);
+ }
+
+ gtk_widget_set_colormap( m_glWidget, colormap );
+ }
+ else
+#endif
+ {
+ visual = gdkx_visual_get( vi->visualid );
+ colormap = gdk_colormap_new( visual, TRUE );
+
+ gtk_widget_push_colormap( colormap );
+ gtk_widget_push_visual( visual );
+
+ wxWindow::Create( parent, id, pos, size, style, name );
+ m_glWidget = m_wxwindow;
+ }
#ifdef __WXGTK20__
gtk_widget_set_double_buffered( m_glWidget, FALSE );
gtk_signal_connect( GTK_OBJECT(m_widget), "size_allocate",
GTK_SIGNAL_FUNC(gtk_glcanvas_size_callback), (gpointer)this );
- gtk_widget_pop_visual();
- gtk_widget_pop_colormap();
+#ifdef __WXGTK20__
+ if (gtk_check_version(2,2,0) != NULL)
+#endif
+ {
+ gtk_widget_pop_visual();
+ gtk_widget_pop_colormap();
+ }
+ // if our parent window is already visible, we had been realized before we
+ // connected to the "realize" signal and hence our m_glContext hasn't been
+ // initialized yet and we have to do it now
if (GTK_WIDGET_REALIZED(m_wxwindow))
gtk_glwindow_realized_callback( m_wxwindow, this );
wxGLCanvas::~wxGLCanvas()
{
+ GLXFBConfig * fbc = (GLXFBConfig *) m_fbc;
+ if (fbc && m_canFreeFBC)
+ XFree( fbc );
+
XVisualInfo *vi = (XVisualInfo *) m_vi;
+ if (vi && m_canFreeVi)
+ XFree( vi );
- if (vi && m_canFreeVi) XFree( vi );
- if (m_glContext) delete m_glContext;
+ delete m_glContext;
}
void* wxGLCanvas::ChooseGLVisual(int *attribList)
{
int data[512];
- if (!attribList)
+ GetGLAttribListFromWX( attribList, data );
+ attribList = (int*) data;
+
+ Display *dpy = GDK_DISPLAY();
+
+ return glXChooseVisual( dpy, DefaultScreen(dpy), attribList );
+}
+
+void* wxGLCanvas::ChooseGLFBC(int *attribList)
+{
+ int data[512];
+ GetGLAttribListFromWX( attribList, data );
+ attribList = (int*) data;
+
+ int returned;
+ return glXChooseFBConfig( GDK_DISPLAY(), DefaultScreen(GDK_DISPLAY()),
+ attribList, &returned );
+}
+
+
+void wxGLCanvas::GetGLAttribListFromWX(int *wx_attribList, int *gl_attribList )
+{
+ if (!wx_attribList)
{
- // default settings if attriblist = 0
- data[0] = GLX_RGBA;
- data[1] = GLX_DOUBLEBUFFER;
- data[2] = GLX_DEPTH_SIZE; data[3] = 1;
- data[4] = GLX_RED_SIZE; data[5] = 1;
- data[6] = GLX_GREEN_SIZE; data[7] = 1;
- data[8] = GLX_BLUE_SIZE; data[9] = 1;
- data[10] = GLX_ALPHA_SIZE; data[11] = 0;
- data[12] = None;
-
- attribList = (int*) data;
+ if (wxGLCanvas::GetGLXVersion() >= 13)
+ // leave GLX >= 1.3 choose the default attributes
+ gl_attribList[0] = 0;
+ else
+ {
+ int i = 0;
+ // default settings if attriblist = 0
+ gl_attribList[i++] = GLX_RGBA;
+ gl_attribList[i++] = GLX_DOUBLEBUFFER;
+ gl_attribList[i++] = GLX_DEPTH_SIZE; gl_attribList[i++] = 1;
+ gl_attribList[i++] = GLX_RED_SIZE; gl_attribList[i++] = 1;
+ gl_attribList[i++] = GLX_GREEN_SIZE; gl_attribList[i++] = 1;
+ gl_attribList[i++] = GLX_BLUE_SIZE; gl_attribList[i++] = 1;
+ gl_attribList[i++] = GLX_ALPHA_SIZE; gl_attribList[i++] = 0;
+ gl_attribList[i++] = None;
+ }
}
else
{
- int arg=0, p=0;
-
- while( (attribList[arg]!=0) && (p<510) )
- {
- switch( attribList[arg++] )
+ int arg=0, p=0;
+ while( (wx_attribList[arg]!=0) && (p<510) )
{
- case WX_GL_RGBA: data[p++] = GLX_RGBA; break;
- case WX_GL_BUFFER_SIZE:
- data[p++]=GLX_BUFFER_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_LEVEL:
- data[p++]=GLX_LEVEL; data[p++]=attribList[arg++]; break;
- case WX_GL_DOUBLEBUFFER: data[p++] = GLX_DOUBLEBUFFER; break;
- case WX_GL_STEREO: data[p++] = GLX_STEREO; break;
- case WX_GL_AUX_BUFFERS:
- data[p++]=GLX_AUX_BUFFERS; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_RED:
- data[p++]=GLX_RED_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_GREEN:
- data[p++]=GLX_GREEN_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_BLUE:
- data[p++]=GLX_BLUE_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_ALPHA:
- data[p++]=GLX_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_DEPTH_SIZE:
- data[p++]=GLX_DEPTH_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_STENCIL_SIZE:
- data[p++]=GLX_STENCIL_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_ACCUM_RED:
- data[p++]=GLX_ACCUM_RED_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_ACCUM_GREEN:
- data[p++]=GLX_ACCUM_GREEN_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_ACCUM_BLUE:
- data[p++]=GLX_ACCUM_BLUE_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_MIN_ACCUM_ALPHA:
- data[p++]=GLX_ACCUM_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
- default:
- break;
+ switch( wx_attribList[arg++] )
+ {
+ case WX_GL_RGBA:
+ if (wxGLCanvas::GetGLXVersion() <= 12)
+ // for GLX >= 1.3, GLX_RGBA is useless (setting this flags will crash on most opengl implm)
+ gl_attribList[p++] = GLX_RGBA;
+ break;
+ case WX_GL_BUFFER_SIZE:
+ gl_attribList[p++] = GLX_BUFFER_SIZE;
+ gl_attribList[p++] = wx_attribList[arg++];
+ break;
+ case WX_GL_LEVEL:
+ gl_attribList[p++] = GLX_LEVEL;
+ gl_attribList[p++] = wx_attribList[arg++];
+ break;
+ case WX_GL_DOUBLEBUFFER:
+ if (wxGLCanvas::GetGLXVersion() <= 12)
+ gl_attribList[p++] = GLX_DOUBLEBUFFER;
+ else
+ // for GLX >= 1.3, GLX_DOUBLEBUFFER format is different (1 <=> True)
+ // it seems this flag is useless for some hardware opengl implementation.
+ // but for Mesa 6.2.1, this flag is used so don't ignore it.
+ gl_attribList[p++] = GLX_DOUBLEBUFFER;
+ gl_attribList[p++] = 1;
+ break;
+ case WX_GL_STEREO:
+ gl_attribList[p++] = GLX_STEREO;
+ break;
+ case WX_GL_AUX_BUFFERS:
+ gl_attribList[p++] = GLX_AUX_BUFFERS;
+ gl_attribList[p++] = wx_attribList[arg++];
+ break;
+ case WX_GL_MIN_RED:
+ gl_attribList[p++] = GLX_RED_SIZE;
+ gl_attribList[p++] = wx_attribList[arg++];
+ break;
+ case WX_GL_MIN_GREEN:
+ gl_attribList[p++] = GLX_GREEN_SIZE;
+ gl_attribList[p++] = wx_attribList[arg++];
+ break;
+ case WX_GL_MIN_BLUE:
+ gl_attribList[p++] = GLX_BLUE_SIZE;
+ gl_attribList[p++] = wx_attribList[arg++];
+ break;
+ case WX_GL_MIN_ALPHA:
+ gl_attribList[p++] = GLX_ALPHA_SIZE;
+ gl_attribList[p++] = wx_attribList[arg++];
+ break;
+ case WX_GL_DEPTH_SIZE:
+ gl_attribList[p++] = GLX_DEPTH_SIZE;
+ gl_attribList[p++] = wx_attribList[arg++];
+ break;
+ case WX_GL_STENCIL_SIZE:
+ gl_attribList[p++] = GLX_STENCIL_SIZE;
+ gl_attribList[p++] = wx_attribList[arg++];
+ break;
+ case WX_GL_MIN_ACCUM_RED:
+ gl_attribList[p++] = GLX_ACCUM_RED_SIZE;
+ gl_attribList[p++] = wx_attribList[arg++];
+ break;
+ case WX_GL_MIN_ACCUM_GREEN:
+ gl_attribList[p++] = GLX_ACCUM_GREEN_SIZE;
+ gl_attribList[p++] = wx_attribList[arg++];
+ break;
+ case WX_GL_MIN_ACCUM_BLUE:
+ gl_attribList[p++] = GLX_ACCUM_BLUE_SIZE;
+ gl_attribList[p++] = wx_attribList[arg++];
+ break;
+ case WX_GL_MIN_ACCUM_ALPHA:
+ gl_attribList[p++] = GLX_ACCUM_ALPHA_SIZE;
+ gl_attribList[p++] = wx_attribList[arg++];
+ break;
+ default:
+ break;
+ }
}
- }
- data[p] = 0;
- attribList = (int*) data;
+ gl_attribList[p] = 0;
}
+}
+void wxGLCanvas::QueryGLXVersion()
+{
+ if (m_glxVersion == 0)
+ {
+ // check the GLX version
+ int glxMajorVer, glxMinorVer;
+ bool ok = glXQueryVersion(GDK_DISPLAY(), &glxMajorVer, &glxMinorVer);
+ wxASSERT_MSG( ok, _T("GLX version not found") );
+ if (!ok)
+ m_glxVersion = 10; // 1.0 by default
+ else
+ m_glxVersion = glxMajorVer*10 + glxMinorVer;
+ }
+}
- Display *dpy = GDK_DISPLAY();
-
- return glXChooseVisual( dpy, DefaultScreen(dpy), attribList );
+int wxGLCanvas::GetGLXVersion()
+{
+ wxASSERT_MSG( m_glxVersion>0, _T("GLX version has not been initialized with wxGLCanvas::QueryGLXVersion()") );
+ return m_glxVersion;
}
+
void wxGLCanvas::SwapBuffers()
{
if (m_glContext)
wxGLApp::~wxGLApp()
{
+ if (m_glFBCInfo)
+ XFree(m_glFBCInfo);
if (m_glVisualInfo)
XFree(m_glVisualInfo);
}
bool wxGLApp::InitGLVisual(int *attribList)
{
- if (m_glVisualInfo)
- XFree(m_glVisualInfo);
+ wxGLCanvas::QueryGLXVersion();
- m_glVisualInfo = wxGLCanvas::ChooseGLVisual(attribList);
+ if (wxGLCanvas::GetGLXVersion() >= 13)
+ {
+ // GLX >= 1.3
+ if (m_glFBCInfo)
+ XFree(m_glFBCInfo);
+ m_glFBCInfo = wxGLCanvas::ChooseGLFBC(attribList);
- return m_glVisualInfo != NULL;
+ if (m_glFBCInfo)
+ {
+ if (m_glVisualInfo)
+ XFree(m_glVisualInfo);
+ m_glVisualInfo = glXGetVisualFromFBConfig(GDK_DISPLAY(), ((GLXFBConfig *)m_glFBCInfo)[0]);
+ }
+ return (m_glFBCInfo != NULL) && (m_glVisualInfo != NULL);
+ }
+ else
+ {
+ // GLX <= 1.2
+ if (m_glVisualInfo)
+ XFree(m_glVisualInfo);
+ m_glVisualInfo = wxGLCanvas::ChooseGLVisual(attribList);
+ return m_glVisualInfo != NULL;
+ }
}
#endif
// wxUSE_GLCANVAS
-
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