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applied the patch by Garrick Meeker

Browse Source 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@7793 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Unknown (NI)
2000-07-20 17:31:40 +00:00
parent 0f8d11dc8d
commit f48d169c4a
6 changed files with 464 additions and 348 deletions
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488
src/msw/glcanvas.cpp
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@@ -57,20 +57,20 @@ wxGLContext::wxGLContext(bool isRGB, wxGLCanvas *win, const wxPalette& palette)
wxGLContext::wxGLContext(
bool isRGB, wxGLCanvas *win,
const wxPalette& palette,
const wxGLContext *other /* for sharing display lists */
)
const wxGLContext *other /* for sharing display lists */
)
{
m_window = win;
m_window = win;
m_hDC = win->GetHDC();
m_hDC = win->GetHDC();
m_glContext = wglCreateContext((HDC) m_hDC);
wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGl context") );
m_glContext = wglCreateContext((HDC) m_hDC);
wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGl context") );
if( other != 0 )
wglShareLists( other->m_glContext, m_glContext );
if( other != 0 )
wglShareLists( other->m_glContext, m_glContext );
wglMakeCurrent((HDC) m_hDC, m_glContext);
wglMakeCurrent((HDC) m_hDC, m_glContext);
}
wxGLContext::~wxGLContext()
@@ -78,7 +78,7 @@ wxGLContext::~wxGLContext()
if (m_glContext)
{
wglMakeCurrent(NULL, NULL);
wglDeleteContext(m_glContext);
wglDeleteContext(m_glContext);
}
}
@@ -98,10 +98,10 @@ void wxGLContext::SetCurrent()
wglMakeCurrent((HDC) m_hDC, m_glContext);
}
/*
setupPixelFormat(hDC);
setupPalette(hDC);
*/
/*
setupPixelFormat(hDC);
setupPalette(hDC);
*/
}
void wxGLContext::SetColour(const char *colour)
@@ -134,25 +134,24 @@ END_EVENT_TABLE()
wxGLCanvas::wxGLCanvas(wxWindow *parent, wxWindowID id,
const wxPoint& pos, const wxSize& size, long style, const wxString& name,
int *attribList /* not used yet! */, const wxPalette& palette):
wxScrolledWindow()
int *attribList, const wxPalette& palette) : wxScrolledWindow()
{
m_glContext = (wxGLContext*) NULL;
m_glContext = (wxGLContext*) NULL;
bool ret = Create(parent, id, pos, size, style, name);
bool ret = Create(parent, id, pos, size, style, name);
if ( ret )
{
SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
}
if ( ret )
{
SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
}
m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
SetupPixelFormat();
SetupPalette(palette);
SetupPixelFormat(attribList);
SetupPalette(palette);
m_glContext = new wxGLContext(TRUE, this, palette);
m_glContext = new wxGLContext(TRUE, this, palette);
}
wxGLCanvas::wxGLCanvas( wxWindow *parent,
@@ -161,22 +160,22 @@ wxGLCanvas::wxGLCanvas( wxWindow *parent,
int *attribList, const wxPalette& palette )
: wxScrolledWindow()
{
m_glContext = (wxGLContext*) NULL;
m_glContext = (wxGLContext*) NULL;
bool ret = Create(parent, id, pos, size, style, name);
bool ret = Create(parent, id, pos, size, style, name);
if ( ret )
{
SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
}
if ( ret )
{
SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
}
m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
SetupPixelFormat();
SetupPalette(palette);
SetupPixelFormat(attribList);
SetupPalette(palette);
m_glContext = new wxGLContext(TRUE, this, palette, shared );
m_glContext = new wxGLContext(TRUE, this, palette, shared );
}
// Not very useful for wxMSW, but this is to be wxGTK compliant
@@ -186,24 +185,24 @@ wxGLCanvas::wxGLCanvas( wxWindow *parent, const wxGLCanvas *shared, wxWindowID i
int *attribList, const wxPalette& palette ):
wxScrolledWindow()
{
m_glContext = (wxGLContext*) NULL;
m_glContext = (wxGLContext*) NULL;
bool ret = Create(parent, id, pos, size, style, name);
bool ret = Create(parent, id, pos, size, style, name);
if ( ret )
{
SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
}
if ( ret )
{
SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
}
m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
SetupPixelFormat();
SetupPalette(palette);
SetupPixelFormat(attribList);
SetupPalette(palette);
wxGLContext *sharedContext=0;
if (shared) sharedContext=shared->GetContext();
m_glContext = new wxGLContext(TRUE, this, palette, sharedContext );
wxGLContext *sharedContext=0;
if (shared) sharedContext=shared->GetContext();
m_glContext = new wxGLContext(TRUE, this, palette, sharedContext );
}
wxGLCanvas::~wxGLCanvas()
@@ -218,157 +217,231 @@ wxGLCanvas::~wxGLCanvas()
bool wxGLCanvas::Create(wxWindow *parent, wxWindowID id,
const wxPoint& pos, const wxSize& size, long style, const wxString& name)
{
/* Suggestion from Kelly Brock <kbrock@8cs.com> (not yet implemented):
/*
Suggestion from Kelly Brock <kbrock@8cs.com> (not yet implemented):
OpenGL corruption fix is simple assuming it doesn't screw anything else
up. Add the following line to the top of the create function:
wxSize parentSize = GetClientSize();
All locations within the function that use 'size' are changed to
'parentSize'.
The above corrects the initial display corruption with the GeForce and
TNT2, not sure about other NVidia cards yet.
*/
OpenGL corruption fix is simple assuming it doesn't screw anything else
up. Add the following line to the top of the create function:
wxSize parentSize = GetClientSize();
static bool registeredGLCanvasClass = FALSE;
All locations within the function that use 'size' are changed to
'parentSize'.
The above corrects the initial display corruption with the GeForce and
TNT2, not sure about other NVidia cards yet.
*/
// We have to register a special window class because we need
// the CS_OWNDC style for GLCanvas.
static bool registeredGLCanvasClass = FALSE;
/*
From Angel Popov <jumpo@bitex.com>
// We have to register a special window class because we need
// the CS_OWNDC style for GLCanvas.
Here are two snips from a dicussion in the OpenGL Gamedev list that explains
how this problem can be fixed:
/*
From Angel Popov <jumpo@bitex.com>
"There are 5 common DCs available in Win95. These are aquired when you call
GetDC or GetDCEx from a window that does _not_ have the OWNDC flag.
OWNDC flagged windows do not get their DC from the common DC pool, the issue
is they require 800 bytes each from the limited 64Kb local heap for GDI."
Here are two snips from a dicussion in the OpenGL Gamedev list that explains
how this problem can be fixed:
"The deal is, if you hold onto one of the 5 shared DC's too long (as GL apps
do), Win95 will actually "steal" it from you. MakeCurrent fails,
apparently, because Windows re-assigns the HDC to a different window. The
only way to prevent this, the only reliable means, is to set CS_OWNDC."
*/
"There are 5 common DCs available in Win95. These are aquired when you call
GetDC or GetDCEx from a window that does _not_ have the OWNDC flag.
OWNDC flagged windows do not get their DC from the common DC pool, the issue
is they require 800 bytes each from the limited 64Kb local heap for GDI."
if (!registeredGLCanvasClass)
"The deal is, if you hold onto one of the 5 shared DC's too long (as GL apps
do), Win95 will actually "steal" it from you. MakeCurrent fails,
apparently, because Windows re-assigns the HDC to a different window. The
only way to prevent this, the only reliable means, is to set CS_OWNDC."
*/
if (!registeredGLCanvasClass)
{
WNDCLASS wndclass;
static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | CS_OWNDC;
// the fields which are common to all classes
wndclass.lpfnWndProc = (WNDPROC)wxWndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = sizeof( DWORD ); // VZ: what is this DWORD used for?
wndclass.hInstance = wxhInstance;
wndclass.hIcon = (HICON) NULL;
wndclass.hCursor = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
wndclass.lpszMenuName = NULL;
// Register the GLCanvas class name
wndclass.hbrBackground = (HBRUSH)NULL;
wndclass.lpszClassName = wxGLCanvasClassName;
wndclass.style = styleNormal;
if ( !RegisterClass(&wndclass) )
{
WNDCLASS wndclass;
static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | CS_OWNDC;
// the fields which are common to all classes
wndclass.lpfnWndProc = (WNDPROC)wxWndProc;
wndclass.cbClsExtra = 0;
wndclass.cbWndExtra = sizeof( DWORD ); // VZ: what is this DWORD used for?
wndclass.hInstance = wxhInstance;
wndclass.hIcon = (HICON) NULL;
wndclass.hCursor = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
wndclass.lpszMenuName = NULL;
// Register the GLCanvas class name
wndclass.hbrBackground = (HBRUSH)NULL;
wndclass.lpszClassName = wxGLCanvasClassName;
wndclass.style = styleNormal;
if ( !RegisterClass(&wndclass) )
{
wxLogLastError(wxT("RegisterClass(wxGLCanvasClass)"));
return FALSE;
}
registeredGLCanvasClass = TRUE;
wxLogLastError(wxT("RegisterClass(wxGLCanvasClass)"));
return FALSE;
}
wxCHECK_MSG( parent, FALSE, wxT("can't create wxWindow without parent") );
registeredGLCanvasClass = TRUE;
}
if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
return FALSE;
wxCHECK_MSG( parent, FALSE, wxT("can't create wxWindow without parent") );
parent->AddChild(this);
if ( !CreateBase(parent, id, pos, size, style, wxDefaultValidator, name) )
return FALSE;
DWORD msflags = 0;
if ( style & wxBORDER )
msflags |= WS_BORDER;
if ( style & wxTHICK_FRAME )
msflags |= WS_THICKFRAME;
parent->AddChild(this);
/*
A general rule with OpenGL and Win32 is that any window that will have a
HGLRC built for it must have two flags: WS_CLIPCHILDREN & WS_CLIPSIBLINGS.
You can find references about this within the knowledge base and most OpenGL
books that contain the wgl function descriptions.
*/
DWORD msflags = 0;
if ( style & wxBORDER )
msflags |= WS_BORDER;
if ( style & wxTHICK_FRAME )
msflags |= WS_THICKFRAME;
msflags |= WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS;
// if ( style & wxCLIP_CHILDREN )
// msflags |= WS_CLIPCHILDREN;
msflags |= WS_CLIPCHILDREN;
/*
A general rule with OpenGL and Win32 is that any window that will have a
HGLRC built for it must have two flags: WS_CLIPCHILDREN & WS_CLIPSIBLINGS.
You can find references about this within the knowledge base and most OpenGL
books that contain the wgl function descriptions.
*/
bool want3D;
WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
msflags |= WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS;
// if ( style & wxCLIP_CHILDREN )
// msflags |= WS_CLIPCHILDREN;
msflags |= WS_CLIPCHILDREN;
// Even with extended styles, need to combine with WS_BORDER
// for them to look right.
if ( want3D || (m_windowStyle & wxSIMPLE_BORDER) || (m_windowStyle & wxRAISED_BORDER ) ||
(m_windowStyle & wxSUNKEN_BORDER) || (m_windowStyle & wxDOUBLE_BORDER))
{
msflags |= WS_BORDER;
}
bool want3D;
WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
// calculate the value to return from WM_GETDLGCODE handler
if ( GetWindowStyleFlag() & wxWANTS_CHARS )
{
// want everything: i.e. all keys and WM_CHAR message
m_lDlgCode = DLGC_WANTARROWS | DLGC_WANTCHARS |
DLGC_WANTTAB | DLGC_WANTMESSAGE;
}
// Even with extended styles, need to combine with WS_BORDER
// for them to look right.
if ( want3D || (m_windowStyle & wxSIMPLE_BORDER) || (m_windowStyle & wxRAISED_BORDER ) ||
(m_windowStyle & wxSUNKEN_BORDER) || (m_windowStyle & wxDOUBLE_BORDER))
{
msflags |= WS_BORDER;
}
MSWCreate(m_windowId, parent, wxGLCanvasClassName, this, NULL,
pos.x, pos.y,
WidthDefault(size.x), HeightDefault(size.y),
msflags, NULL, exStyle);
// calculate the value to return from WM_GETDLGCODE handler
if ( GetWindowStyleFlag() & wxWANTS_CHARS )
{
// want everything: i.e. all keys and WM_CHAR message
m_lDlgCode = DLGC_WANTARROWS | DLGC_WANTCHARS |
DLGC_WANTTAB | DLGC_WANTMESSAGE;
}
return TRUE;
MSWCreate(m_windowId, parent, wxGLCanvasClassName, this, NULL,
pos.x, pos.y,
WidthDefault(size.x), HeightDefault(size.y),
msflags, NULL, exStyle);
return TRUE;
}
void wxGLCanvas::SetupPixelFormat() // (HDC hDC)
void wxGLCanvas::SetupPixelFormat(int *attribList) // (HDC hDC)
{
PIXELFORMATDESCRIPTOR pfd = {
sizeof(PIXELFORMATDESCRIPTOR), /* size */
1, /* version */
PFD_SUPPORT_OPENGL |
PFD_DRAW_TO_WINDOW |
PFD_DOUBLEBUFFER, /* support double-buffering */
PFD_TYPE_RGBA, /* color type */
16, /* prefered color depth */
0, 0, 0, 0, 0, 0, /* color bits (ignored) */
0, /* no alpha buffer */
0, /* alpha bits (ignored) */
0, /* no accumulation buffer */
0, 0, 0, 0, /* accum bits (ignored) */
16, /* depth buffer */
0, /* no stencil buffer */
0, /* no auxiliary buffers */
PFD_MAIN_PLANE, /* main layer */
0, /* reserved */
0, 0, 0, /* no layer, visible, damage masks */
};
int pixelFormat;
int pixelFormat;
PIXELFORMATDESCRIPTOR pfd = {
sizeof(PIXELFORMATDESCRIPTOR), /* size */
1, /* version */
PFD_SUPPORT_OPENGL |
PFD_DRAW_TO_WINDOW |
PFD_DOUBLEBUFFER, /* support double-buffering */
PFD_TYPE_RGBA, /* color type */
16, /* prefered color depth */
0, 0, 0, 0, 0, 0, /* color bits (ignored) */
0, /* no alpha buffer */
0, /* alpha bits (ignored) */
0, /* no accumulation buffer */
0, 0, 0, 0, /* accum bits (ignored) */
16, /* depth buffer */
0, /* no stencil buffer */
0, /* no auxiliary buffers */
PFD_MAIN_PLANE, /* main layer */
0, /* reserved */
0, 0, 0, /* no layer, visible, damage masks */
};
pixelFormat = ChoosePixelFormat((HDC) m_hDC, &pfd);
if (pixelFormat == 0) {
MessageBox(WindowFromDC((HDC) m_hDC), wxT("ChoosePixelFormat failed."), wxT("Error"),
MB_ICONERROR | MB_OK);
exit(1);
if (attribList) {
pfd.dwFlags &= ~PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_COLORINDEX;
pfd.cColorBits = 0;
int arg=0;
while( (attribList[arg]!=0) )
{
switch( attribList[arg++] )
{
case WX_GL_RGBA:
pfd.iPixelType = PFD_TYPE_RGBA;
break;
case WX_GL_BUFFER_SIZE:
pfd.cColorBits = attribList[arg++];
break;
case WX_GL_LEVEL:
// this member looks like it may be obsolete
if (attribList[arg] > 0) {
pfd.iLayerType = PFD_OVERLAY_PLANE;
} else if (attribList[arg] < 0) {
pfd.iLayerType = PFD_UNDERLAY_PLANE;
} else {
pfd.iLayerType = PFD_MAIN_PLANE;
}
arg++;
break;
case WX_GL_DOUBLEBUFFER:
pfd.dwFlags |= PFD_DOUBLEBUFFER;
break;
case WX_GL_STEREO:
pfd.dwFlags |= PFD_STEREO;
break;
case WX_GL_AUX_BUFFERS:
pfd.cAuxBuffers = attribList[arg++];
break;
case WX_GL_MIN_RED:
pfd.cColorBits += (pfd.cRedBits = attribList[arg++]);
break;
case WX_GL_MIN_GREEN:
pfd.cColorBits += (pfd.cGreenBits = attribList[arg++]);
break;
case WX_GL_MIN_BLUE:
pfd.cColorBits += (pfd.cBlueBits = attribList[arg++]);
break;
case WX_GL_MIN_ALPHA:
// doesn't count in cColorBits
pfd.cAlphaBits = attribList[arg++];
break;
case WX_GL_DEPTH_SIZE:
pfd.cDepthBits = attribList[arg++];
break;
case WX_GL_STENCIL_SIZE:
pfd.cStencilBits = attribList[arg++];
break;
case WX_GL_MIN_ACCUM_RED:
pfd.cAccumBits += (pfd.cAccumRedBits = attribList[arg++]);
break;
case WX_GL_MIN_ACCUM_GREEN:
pfd.cAccumBits += (pfd.cAccumGreenBits = attribList[arg++]);
break;
case WX_GL_MIN_ACCUM_BLUE:
pfd.cAccumBits += (pfd.cAccumBlueBits = attribList[arg++]);
break;
case WX_GL_MIN_ACCUM_ALPHA:
pfd.cAccumBits += (pfd.cAccumAlphaBits = attribList[arg++]);
break;
default:
break;
}
}
}
pixelFormat = ChoosePixelFormat((HDC) m_hDC, &pfd);
if (pixelFormat == 0) {
MessageBox(WindowFromDC((HDC) m_hDC), wxT("ChoosePixelFormat failed."), wxT("Error"),
MB_ICONERROR | MB_OK);
exit(1);
}
if (SetPixelFormat((HDC) m_hDC, pixelFormat, &pfd) != TRUE) {
MessageBox(WindowFromDC((HDC) m_hDC), wxT("SetPixelFormat failed."), wxT("Error"),
MB_ICONERROR | MB_OK);
exit(1);
}
if (SetPixelFormat((HDC) m_hDC, pixelFormat, &pfd) != TRUE) {
MessageBox(WindowFromDC((HDC) m_hDC), wxT("SetPixelFormat failed."), wxT("Error"),
MB_ICONERROR | MB_OK);
exit(1);
}
}
void wxGLCanvas::SetupPalette(const wxPalette& palette)
@@ -408,7 +481,7 @@ wxPalette wxGLCanvas::CreateDefaultPalette()
DescribePixelFormat((HDC) m_hDC, pixelFormat, sizeof(PIXELFORMATDESCRIPTOR), &pfd);
paletteSize = 1 << pfd.cColorBits;
paletteSize = 1 << pfd.cColorBits;
LOGPALETTE* pPal =
(LOGPALETTE*) malloc(sizeof(LOGPALETTE) + paletteSize * sizeof(PALETTEENTRY));
@@ -483,30 +556,30 @@ void wxGLCanvas::SetColour(const char *colour)
// So we need wxFrame to call OnQueryNewPalette for all children...
void wxGLCanvas::OnQueryNewPalette(wxQueryNewPaletteEvent& event)
{
/* realize palette if this is the current window */
if ( GetPalette()->Ok() ) {
::UnrealizeObject((HPALETTE) GetPalette()->GetHPALETTE());
::SelectPalette((HDC) GetHDC(), (HPALETTE) GetPalette()->GetHPALETTE(), FALSE);
::RealizePalette((HDC) GetHDC());
Refresh();
event.SetPaletteRealized(TRUE);
}
else
event.SetPaletteRealized(FALSE);
/* realize palette if this is the current window */
if ( GetPalette()->Ok() ) {
::UnrealizeObject((HPALETTE) GetPalette()->GetHPALETTE());
::SelectPalette((HDC) GetHDC(), (HPALETTE) GetPalette()->GetHPALETTE(), FALSE);
::RealizePalette((HDC) GetHDC());
Refresh();
event.SetPaletteRealized(TRUE);
}
else
event.SetPaletteRealized(FALSE);
}
// I think this doesn't have to be propagated to child windows.
void wxGLCanvas::OnPaletteChanged(wxPaletteChangedEvent& event)
{
/* realize palette if this is *not* the current window */
if ( GetPalette() &&
/* realize palette if this is *not* the current window */
if ( GetPalette() &&
GetPalette()->Ok() && (this != event.GetChangedWindow()) )
{
::UnrealizeObject((HPALETTE) GetPalette()->GetHPALETTE());
::SelectPalette((HDC) GetHDC(), (HPALETTE) GetPalette()->GetHPALETTE(), FALSE);
::RealizePalette((HDC) GetHDC());
Refresh();
}
{
::UnrealizeObject((HPALETTE) GetPalette()->GetHPALETTE());
::SelectPalette((HDC) GetHDC(), (HPALETTE) GetPalette()->GetHPALETTE(), FALSE);
::RealizePalette((HDC) GetHDC());
Refresh();
}
}
/* Give extensions proper function names. */
@@ -550,15 +623,15 @@ void glIndexPointerEXT(GLenum type, GLsizei stride, GLsizei count, const GLvoid
void glNormalPointerEXT(GLenum type, GLsizei stride, GLsizei count, const GLvoid *pointer)
{
#ifdef GL_EXT_vertex_array
static PFNGLNORMALPOINTEREXTPROC proc = 0;
static PFNGLNORMALPOINTEREXTPROC proc = 0;
if ( !proc )
{
proc = (PFNGLNORMALPOINTEREXTPROC) wglGetProcAddress("glNormalPointerEXT");
}
if ( !proc )
{
proc = (PFNGLNORMALPOINTEREXTPROC) wglGetProcAddress("glNormalPointerEXT");
}
if ( proc )
(* proc) (type, stride, count, pointer);
if ( proc )
(* proc) (type, stride, count, pointer);
#endif
}
@@ -569,15 +642,14 @@ void glTexCoordPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count
void glVertexPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count, const GLvoid *pointer)
{
#ifdef GL_EXT_vertex_array
static PFNGLVERTEXPOINTEREXTPROC proc = 0;
static PFNGLVERTEXPOINTEREXTPROC proc = 0;
if ( !proc )
{
proc = (PFNGLVERTEXPOINTEREXTPROC) wglGetProcAddress("glVertexPointerEXT");
}
if ( proc )
(* proc) (size, type, stride, count, pointer);
if ( !proc )
{
proc = (PFNGLVERTEXPOINTEREXTPROC) wglGetProcAddress("glVertexPointerEXT");
}
if ( proc )
(* proc) (size, type, stride, count, pointer);
#endif
}