src/mac/carbon/glcanvas.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        glcanvas.cpp
// Purpose:     wxGLCanvas, for using OpenGL with wxWidgets under Macintosh
// Author:      Stefan Csomor
// Modified by:
// Created:     1998-01-01
// RCS-ID:      $Id$
// Copyright:   (c) Stefan Csomor
// Licence:       wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "glcanvas.h"
#endif

#include "wx/wxprec.h"

#if defined(__BORLANDC__)
#pragma hdrstop
#endif

#if wxUSE_GLCANVAS

#ifndef WX_PRECOMP
#include "wx/frame.h"
#endif

#include "wx/settings.h"
#include "wx/log.h"

#include "wx/glcanvas.h"
#include "wx/mac/uma.h"

// DLL options compatibility check:
#include "wx/build.h"
WX_CHECK_BUILD_OPTIONS("wxGL")

/*
* GLContext implementation
*/

wxGLContext::wxGLContext(
                         AGLPixelFormat fmt, wxGLCanvas *win,
                         const wxPalette& palette,
                         const wxGLContext *other        /* for sharing display lists */
                         )
{
    m_window = win;

    m_drawable = (AGLDrawable) UMAGetWindowPort(MAC_WXHWND(win->MacGetTopLevelWindowRef()));

    m_glContext = aglCreateContext(fmt, other ? other->m_glContext : NULL);
    wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGl context") );

    GLboolean b;
    b = aglSetDrawable(m_glContext, m_drawable);
    wxCHECK_RET( b, wxT("Couldn't bind OpenGl context") );
    aglEnable(m_glContext , AGL_BUFFER_RECT ) ;
    b = aglSetCurrentContext(m_glContext);
    wxCHECK_RET( b, wxT("Couldn't activate OpenGl context") );
}

wxGLContext::~wxGLContext()
{
    if (m_glContext)
    {
        aglSetCurrentContext(NULL);
        aglDestroyContext(m_glContext);
    }
}

void wxGLContext::SwapBuffers()
{
    if (m_glContext)
    {
        aglSwapBuffers(m_glContext);
    }
}

void wxGLContext::SetCurrent()
{
    if (m_glContext)
    {
        aglSetCurrentContext(m_glContext);
    }
}

void wxGLContext::Update()
{
    if (m_glContext)
    {
        aglUpdateContext(m_glContext);
    }
}

void wxGLContext::SetColour(const wxChar *colour)
{
    wxColour col = wxTheColourDatabase->Find(colour);
    if (col.Ok())
    {
        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);
    }
}


/*
* wxGLCanvas implementation
*/

IMPLEMENT_CLASS(wxGLCanvas, wxWindow)

BEGIN_EVENT_TABLE(wxGLCanvas, wxWindow)
    EVT_SIZE(wxGLCanvas::OnSize)
END_EVENT_TABLE()

wxGLCanvas::wxGLCanvas(wxWindow *parent, wxWindowID id,
                       const wxPoint& pos, const wxSize& size, long style, const wxString& name,
                       int *attribList, const wxPalette& palette)
{
    Create(parent, NULL, id, pos, size, style, name, attribList, palette);
}

wxGLCanvas::wxGLCanvas( wxWindow *parent,
                       const wxGLContext *shared, wxWindowID id,
                       const wxPoint& pos, const wxSize& size, long style, const wxString& name,
                       int *attribList, const wxPalette& palette )
{
    Create(parent, shared, id, pos, size, style, name, attribList, palette);
}

wxGLCanvas::wxGLCanvas( wxWindow *parent, const wxGLCanvas *shared, wxWindowID id,
                       const wxPoint& pos, const wxSize& size, long style, const wxString& name,
                       int *attribList, const wxPalette& palette )
{
    Create(parent, shared ? shared->GetContext() : NULL, id, pos, size, style, name, attribList, palette);
}

wxGLCanvas::~wxGLCanvas()
{
    if (m_glContext != NULL) {
        delete m_glContext;
        m_glContext = NULL;
    }
}

static AGLPixelFormat ChoosePixelFormat(const int *attribList)
{
    GLint data[512];
    GLint defaultAttribs[] = { AGL_RGBA,
        AGL_DOUBLEBUFFER,
        AGL_MINIMUM_POLICY,
        AGL_DEPTH_SIZE, 1,  // use largest available depth buffer
        AGL_RED_SIZE, 1,
        AGL_GREEN_SIZE, 1,
        AGL_BLUE_SIZE, 1,
        AGL_ALPHA_SIZE, 0,
        AGL_NONE };
    GLint *attribs;
    if (!attribList)
    {
        attribs = defaultAttribs;
    }
    else
    {
        int arg=0, p=0;

        data[p++] = AGL_MINIMUM_POLICY; // make _SIZE tags behave more like GLX
        while( (attribList[arg]!=0) && (p<512) )
        {
            switch( attribList[arg++] )
            {
            case WX_GL_RGBA: data[p++] = AGL_RGBA; break;
            case WX_GL_BUFFER_SIZE:
                data[p++]=AGL_BUFFER_SIZE; data[p++]=attribList[arg++]; break;
            case WX_GL_LEVEL:
                data[p++]=AGL_LEVEL; data[p++]=attribList[arg++]; break;
            case WX_GL_DOUBLEBUFFER: data[p++] = AGL_DOUBLEBUFFER; break;
            case WX_GL_STEREO: data[p++] = AGL_STEREO; break;
            case WX_GL_AUX_BUFFERS:
                data[p++]=AGL_AUX_BUFFERS; data[p++]=attribList[arg++]; break;
            case WX_GL_MIN_RED:
                data[p++]=AGL_RED_SIZE; data[p++]=attribList[arg++]; break;
            case WX_GL_MIN_GREEN:
                data[p++]=AGL_GREEN_SIZE; data[p++]=attribList[arg++]; break;
            case WX_GL_MIN_BLUE:
                data[p++]=AGL_BLUE_SIZE; data[p++]=attribList[arg++]; break;
            case WX_GL_MIN_ALPHA:
                data[p++]=AGL_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
            case WX_GL_DEPTH_SIZE:
                data[p++]=AGL_DEPTH_SIZE; data[p++]=attribList[arg++]; break;
            case WX_GL_STENCIL_SIZE:
                data[p++]=AGL_STENCIL_SIZE; data[p++]=attribList[arg++]; break;
            case WX_GL_MIN_ACCUM_RED:
                data[p++]=AGL_ACCUM_RED_SIZE; data[p++]=attribList[arg++]; break;
            case WX_GL_MIN_ACCUM_GREEN:
                data[p++]=AGL_ACCUM_GREEN_SIZE; data[p++]=attribList[arg++]; break;
            case WX_GL_MIN_ACCUM_BLUE:
                data[p++]=AGL_ACCUM_BLUE_SIZE; data[p++]=attribList[arg++]; break;
            case WX_GL_MIN_ACCUM_ALPHA:
                data[p++]=AGL_ACCUM_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
            default:
                break;
            }
        }
        data[p] = 0;

        attribs = data;
    }

    return aglChoosePixelFormat(NULL, 0, attribs);
}

bool wxGLCanvas::Create(wxWindow *parent, const wxGLContext *shared, wxWindowID id,
                        const wxPoint& pos, const wxSize& size, long style, const wxString& name,
                        int *attribList, const wxPalette& palette)
{
    wxWindow::Create( parent, id, pos, size, style, name );

    AGLPixelFormat fmt = ChoosePixelFormat(attribList);
    wxCHECK_MSG( fmt, false, wxT("Couldn't create OpenGl pixel format") );

    m_glContext = new wxGLContext(fmt, this, palette, shared);
    m_macCanvasIsShown = true ;
    aglDestroyPixelFormat(fmt);

    return true;
}

void wxGLCanvas::SwapBuffers()
{
    if (m_glContext)
        m_glContext->SwapBuffers();
}

void wxGLCanvas::UpdateContext()
{
    if (m_glContext)
        m_glContext->Update();
}

void wxGLCanvas::SetViewport()
{
    // viewport is initially set to entire port
    // adjust glViewport to just this window
    int x = 0 ;
    int y = 0 ;

    wxWindow* iter = this ;
    while( iter->GetParent() )
    {
    	iter = iter->GetParent() ;
    }

    if ( iter && iter->IsTopLevel() )
    {
	    MacClientToRootWindow( &x , &y ) ;
	    int width, height;
	    GetClientSize(& width, & height);
	    Rect bounds ;
	    GetWindowPortBounds( MAC_WXHWND(MacGetTopLevelWindowRef()) , &bounds ) ;
	    GLint parms[4] ;
	    parms[0] = x ;
	    parms[1] = bounds.bottom - bounds.top - ( y + height ) ;
	    parms[2] = width ;
	    parms[3] = height ;

	    if ( !m_macCanvasIsShown )
	    	parms[0] += 20000 ;
	    aglSetInteger( m_glContext->m_glContext , AGL_BUFFER_RECT , parms ) ;
   	}
}

void wxGLCanvas::OnSize(wxSizeEvent& event)
{
    MacUpdateView() ;
}

void wxGLCanvas::MacUpdateView()
{
    if (m_glContext)
    {
        UpdateContext();
        m_glContext->SetCurrent();
        SetViewport();
    }
}

void wxGLCanvas::MacSuperChangedPosition()
{
    MacUpdateView() ;
    wxWindow::MacSuperChangedPosition() ;
}

void wxGLCanvas::MacTopLevelWindowChangedPosition()
{
    MacUpdateView() ;
    wxWindow::MacTopLevelWindowChangedPosition() ;
}

void wxGLCanvas::SetCurrent()
{
    if (m_glContext)
    {
        m_glContext->SetCurrent();
    }
}

void wxGLCanvas::SetColour(const wxChar *colour)
{
    if (m_glContext)
        m_glContext->SetColour(colour);
}

bool wxGLCanvas::Show(bool show)
{
    if ( !wxWindow::Show( show ) )
        return FALSE ;
/*
    if ( !show )
    {
        if ( m_macCanvasIsShown )
        {
            m_macCanvasIsShown = false ;
            SetViewport() ;
        }
    }
    else
    {
        if ( m_peer->IsVisible()&& !m_macCanvasIsShown )
        {
            m_macCanvasIsShown = true ;
            SetViewport() ;
        }
    }
*/
    return TRUE ;
}

void wxGLCanvas::MacVisibilityChanged()
{
    if ( !MacIsReallyShown() )
    {
        if ( m_macCanvasIsShown )
        {
            m_macCanvasIsShown = false ;
            SetViewport() ;
        }
    }
    else
    {
        if ( !m_macCanvasIsShown )
        {
            m_macCanvasIsShown = true ;
            SetViewport() ;
        }
    }
    wxWindowMac::MacVisibilityChanged() ;
}

//---------------------------------------------------------------------------
// wxGLApp
//---------------------------------------------------------------------------

IMPLEMENT_CLASS(wxGLApp, wxApp)

bool wxGLApp::InitGLVisual(int *attribList)
{
    AGLPixelFormat fmt = ChoosePixelFormat(attribList);
    if (fmt != NULL) {
        aglDestroyPixelFormat(fmt);
        return true;
    } else
        return false;
}

wxGLApp::~wxGLApp(void)
{
}

#endif // wxUSE_GLCANVAS
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: glcanvas.cpp
	3	// Purpose: wxGLCanvas, for using OpenGL with wxWidgets under Macintosh
	4	// Author: Stefan Csomor
	5	// Modified by:
	6	// Created: 1998-01-01
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Stefan Csomor
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
	13	#pragma implementation "glcanvas.h"
	14	#endif
	15
	16	#include "wx/wxprec.h"
	17
	18	#if defined(__BORLANDC__)
	19	#pragma hdrstop
	20	#endif
	21
	22	#if wxUSE_GLCANVAS
	23
	24	#ifndef WX_PRECOMP
	25	#include "wx/frame.h"
	26	#endif
	27
	28	#include "wx/settings.h"
	29	#include "wx/log.h"
	30
	31	#include "wx/glcanvas.h"
	32	#include "wx/mac/uma.h"
	33
	34	// DLL options compatibility check:
	35	#include "wx/build.h"
	36	WX_CHECK_BUILD_OPTIONS("wxGL")
	37
	38	/*
	39	* GLContext implementation
	40	*/
	41
	42	wxGLContext::wxGLContext(
	43	AGLPixelFormat fmt, wxGLCanvas *win,
	44	const wxPalette& palette,
	45	const wxGLContext other / for sharing display lists */
	46	)
	47	{
	48	m_window = win;
	49
	50	m_drawable = (AGLDrawable) UMAGetWindowPort(MAC_WXHWND(win->MacGetTopLevelWindowRef()));
	51
	52	m_glContext = aglCreateContext(fmt, other ? other->m_glContext : NULL);
	53	wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGl context") );
	54
	55	GLboolean b;
	56	b = aglSetDrawable(m_glContext, m_drawable);
	57	wxCHECK_RET( b, wxT("Couldn't bind OpenGl context") );
	58	aglEnable(m_glContext , AGL_BUFFER_RECT ) ;
	59	b = aglSetCurrentContext(m_glContext);
	60	wxCHECK_RET( b, wxT("Couldn't activate OpenGl context") );
	61	}
	62
	63	wxGLContext::~wxGLContext()
	64	{
	65	if (m_glContext)
	66	{
	67	aglSetCurrentContext(NULL);
	68	aglDestroyContext(m_glContext);
	69	}
	70	}
	71
	72	void wxGLContext::SwapBuffers()
	73	{
	74	if (m_glContext)
	75	{
	76	aglSwapBuffers(m_glContext);
	77	}
	78	}
	79
	80	void wxGLContext::SetCurrent()
	81	{
	82	if (m_glContext)
	83	{
	84	aglSetCurrentContext(m_glContext);
	85	}
	86	}
	87
	88	void wxGLContext::Update()
	89	{
	90	if (m_glContext)
	91	{
	92	aglUpdateContext(m_glContext);
	93	}
	94	}
	95
	96	void wxGLContext::SetColour(const wxChar *colour)
	97	{
	98	wxColour col = wxTheColourDatabase->Find(colour);
	99	if (col.Ok())
	100	{
	101	float r = (float)(col.Red()/256.0);
	102	float g = (float)(col.Green()/256.0);
	103	float b = (float)(col.Blue()/256.0);
	104	glColor3f( r, g, b);
	105	}
	106	}
	107
	108
	109	/*
	110	* wxGLCanvas implementation
	111	*/
	112
	113	IMPLEMENT_CLASS(wxGLCanvas, wxWindow)
	114
	115	BEGIN_EVENT_TABLE(wxGLCanvas, wxWindow)
	116	EVT_SIZE(wxGLCanvas::OnSize)
	117	END_EVENT_TABLE()
	118
	119	wxGLCanvas::wxGLCanvas(wxWindow *parent, wxWindowID id,
	120	const wxPoint& pos, const wxSize& size, long style, const wxString& name,
	121	int *attribList, const wxPalette& palette)
	122	{
	123	Create(parent, NULL, id, pos, size, style, name, attribList, palette);
	124	}
	125
	126	wxGLCanvas::wxGLCanvas( wxWindow *parent,
	127	const wxGLContext *shared, wxWindowID id,
	128	const wxPoint& pos, const wxSize& size, long style, const wxString& name,
	129	int *attribList, const wxPalette& palette )
	130	{
	131	Create(parent, shared, id, pos, size, style, name, attribList, palette);
	132	}
	133
	134	wxGLCanvas::wxGLCanvas( wxWindow parent, const wxGLCanvas shared, wxWindowID id,
	135	const wxPoint& pos, const wxSize& size, long style, const wxString& name,
	136	int *attribList, const wxPalette& palette )
	137	{
	138	Create(parent, shared ? shared->GetContext() : NULL, id, pos, size, style, name, attribList, palette);
	139	}
	140
	141	wxGLCanvas::~wxGLCanvas()
	142	{
	143	if (m_glContext != NULL) {
	144	delete m_glContext;
	145	m_glContext = NULL;
	146	}
	147	}
	148
	149	static AGLPixelFormat ChoosePixelFormat(const int *attribList)
	150	{
	151	GLint data[512];
	152	GLint defaultAttribs[] = { AGL_RGBA,
	153	AGL_DOUBLEBUFFER,
	154	AGL_MINIMUM_POLICY,
	155	AGL_DEPTH_SIZE, 1, // use largest available depth buffer
	156	AGL_RED_SIZE, 1,
	157	AGL_GREEN_SIZE, 1,
	158	AGL_BLUE_SIZE, 1,
	159	AGL_ALPHA_SIZE, 0,
	160	AGL_NONE };
	161	GLint *attribs;
	162	if (!attribList)
	163	{
	164	attribs = defaultAttribs;
	165	}
	166	else
	167	{
	168	int arg=0, p=0;
	169
	170	data[p++] = AGL_MINIMUM_POLICY; // make _SIZE tags behave more like GLX
	171	while( (attribList[arg]!=0) && (p<512) )
	172	{
	173	switch( attribList[arg++] )
	174	{
	175	case WX_GL_RGBA: data[p++] = AGL_RGBA; break;
	176	case WX_GL_BUFFER_SIZE:
	177	data[p++]=AGL_BUFFER_SIZE; data[p++]=attribList[arg++]; break;
	178	case WX_GL_LEVEL:
	179	data[p++]=AGL_LEVEL; data[p++]=attribList[arg++]; break;
	180	case WX_GL_DOUBLEBUFFER: data[p++] = AGL_DOUBLEBUFFER; break;
	181	case WX_GL_STEREO: data[p++] = AGL_STEREO; break;
	182	case WX_GL_AUX_BUFFERS:
	183	data[p++]=AGL_AUX_BUFFERS; data[p++]=attribList[arg++]; break;
	184	case WX_GL_MIN_RED:
	185	data[p++]=AGL_RED_SIZE; data[p++]=attribList[arg++]; break;
	186	case WX_GL_MIN_GREEN:
	187	data[p++]=AGL_GREEN_SIZE; data[p++]=attribList[arg++]; break;
	188	case WX_GL_MIN_BLUE:
	189	data[p++]=AGL_BLUE_SIZE; data[p++]=attribList[arg++]; break;
	190	case WX_GL_MIN_ALPHA:
	191	data[p++]=AGL_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
	192	case WX_GL_DEPTH_SIZE:
	193	data[p++]=AGL_DEPTH_SIZE; data[p++]=attribList[arg++]; break;
	194	case WX_GL_STENCIL_SIZE:
	195	data[p++]=AGL_STENCIL_SIZE; data[p++]=attribList[arg++]; break;
	196	case WX_GL_MIN_ACCUM_RED:
	197	data[p++]=AGL_ACCUM_RED_SIZE; data[p++]=attribList[arg++]; break;
	198	case WX_GL_MIN_ACCUM_GREEN:
	199	data[p++]=AGL_ACCUM_GREEN_SIZE; data[p++]=attribList[arg++]; break;
	200	case WX_GL_MIN_ACCUM_BLUE:
	201	data[p++]=AGL_ACCUM_BLUE_SIZE; data[p++]=attribList[arg++]; break;
	202	case WX_GL_MIN_ACCUM_ALPHA:
	203	data[p++]=AGL_ACCUM_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
	204	default:
	205	break;
	206	}
	207	}
	208	data[p] = 0;
	209
	210	attribs = data;
	211	}
	212
	213	return aglChoosePixelFormat(NULL, 0, attribs);
	214	}
	215
	216	bool wxGLCanvas::Create(wxWindow parent, const wxGLContext shared, wxWindowID id,
	217	const wxPoint& pos, const wxSize& size, long style, const wxString& name,
	218	int *attribList, const wxPalette& palette)
	219	{
	220	wxWindow::Create( parent, id, pos, size, style, name );
	221
	222	AGLPixelFormat fmt = ChoosePixelFormat(attribList);
	223	wxCHECK_MSG( fmt, false, wxT("Couldn't create OpenGl pixel format") );
	224
	225	m_glContext = new wxGLContext(fmt, this, palette, shared);
	226	m_macCanvasIsShown = true ;
	227	aglDestroyPixelFormat(fmt);
	228
	229	return true;
	230	}
	231
	232	void wxGLCanvas::SwapBuffers()
	233	{
	234	if (m_glContext)
	235	m_glContext->SwapBuffers();
	236	}
	237
	238	void wxGLCanvas::UpdateContext()
	239	{
	240	if (m_glContext)
	241	m_glContext->Update();
	242	}
	243
	244	void wxGLCanvas::SetViewport()
	245	{
	246	// viewport is initially set to entire port
	247	// adjust glViewport to just this window
	248	int x = 0 ;
	249	int y = 0 ;
	250
	251	wxWindow* iter = this ;
	252	while( iter->GetParent() )
	253	{
	254	iter = iter->GetParent() ;
	255	}
	256
	257	if ( iter && iter->IsTopLevel() )
	258	{
	259	MacClientToRootWindow( &x , &y ) ;
	260	int width, height;
	261	GetClientSize(& width, & height);
	262	Rect bounds ;
	263	GetWindowPortBounds( MAC_WXHWND(MacGetTopLevelWindowRef()) , &bounds ) ;
	264	GLint parms[4] ;
	265	parms[0] = x ;
	266	parms[1] = bounds.bottom - bounds.top - ( y + height ) ;
	267	parms[2] = width ;
	268	parms[3] = height ;
	269
	270	if ( !m_macCanvasIsShown )
	271	parms[0] += 20000 ;
	272	aglSetInteger( m_glContext->m_glContext , AGL_BUFFER_RECT , parms ) ;
	273	}
	274	}
	275
	276	void wxGLCanvas::OnSize(wxSizeEvent& event)
	277	{
	278	MacUpdateView() ;
	279	}
	280
	281	void wxGLCanvas::MacUpdateView()
	282	{
	283	if (m_glContext)
	284	{
	285	UpdateContext();
	286	m_glContext->SetCurrent();
	287	SetViewport();
	288	}
	289	}
	290
	291	void wxGLCanvas::MacSuperChangedPosition()
	292	{
	293	MacUpdateView() ;
	294	wxWindow::MacSuperChangedPosition() ;
	295	}
	296
	297	void wxGLCanvas::MacTopLevelWindowChangedPosition()
	298	{
	299	MacUpdateView() ;
	300	wxWindow::MacTopLevelWindowChangedPosition() ;
	301	}
	302
	303	void wxGLCanvas::SetCurrent()
	304	{
	305	if (m_glContext)
	306	{
	307	m_glContext->SetCurrent();
	308	}
	309	}
	310
	311	void wxGLCanvas::SetColour(const wxChar *colour)
	312	{
	313	if (m_glContext)
	314	m_glContext->SetColour(colour);
	315	}
	316
	317	bool wxGLCanvas::Show(bool show)
	318	{
	319	if ( !wxWindow::Show( show ) )
	320	return FALSE ;
	321	/*
	322	if ( !show )
	323	{
	324	if ( m_macCanvasIsShown )
	325	{
	326	m_macCanvasIsShown = false ;
	327	SetViewport() ;
	328	}
	329	}
	330	else
	331	{
	332	if ( m_peer->IsVisible()&& !m_macCanvasIsShown )
	333	{
	334	m_macCanvasIsShown = true ;
	335	SetViewport() ;
	336	}
	337	}
	338	*/
	339	return TRUE ;
	340	}
	341
	342	void wxGLCanvas::MacVisibilityChanged()
	343	{
	344	if ( !MacIsReallyShown() )
	345	{
	346	if ( m_macCanvasIsShown )
	347	{
	348	m_macCanvasIsShown = false ;
	349	SetViewport() ;
	350	}
	351	}
	352	else
	353	{
	354	if ( !m_macCanvasIsShown )
	355	{
	356	m_macCanvasIsShown = true ;
	357	SetViewport() ;
	358	}
	359	}
	360	wxWindowMac::MacVisibilityChanged() ;
	361	}
	362
	363	//---------------------------------------------------------------------------
	364	// wxGLApp
	365	//---------------------------------------------------------------------------
	366
	367	IMPLEMENT_CLASS(wxGLApp, wxApp)
	368
	369	bool wxGLApp::InitGLVisual(int *attribList)
	370	{
	371	AGLPixelFormat fmt = ChoosePixelFormat(attribList);
	372	if (fmt != NULL) {
	373	aglDestroyPixelFormat(fmt);
	374	return true;
	375	} else
	376	return false;
	377	}
	378
	379	wxGLApp::~wxGLApp(void)
	380	{
	381	}
	382
	383	#endif // wxUSE_GLCANVAS