/////////////////////////////////////////////////////////////////////////////
-// Name: glcanvas.cpp
-// Purpose: wxGLCanvas, for using OpenGL with wxWindows under MS Windows
+// Name: src/msw/glcanvas.cpp
+// Purpose: wxGLCanvas, for using OpenGL with wxWidgets under MS Windows
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
-// Licence: wxWindows licence
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "glcanvas.h"
#endif
#pragma hdrstop
#endif
-#include <wx/setup.h>
-
#if wxUSE_GLCANVAS
#ifndef WX_PRECOMP
-#include <wx/frame.h>
+ #include "wx/frame.h"
+ #include "wx/settings.h"
+ #include "wx/intl.h"
+ #include "wx/log.h"
+ #include "wx/app.h"
#endif
-#include <wx/msw/private.h>
-#include <wx/settings.h>
-#include <wx/log.h>
+#include "wx/msw/private.h"
+
+// DLL options compatibility check:
+#include "wx/build.h"
+WX_CHECK_BUILD_OPTIONS("wxGL")
+
+#include "wx/glcanvas.h"
-#include <wx/glcanvas.h>
+/*
+ The following two compiler directives are specific to the Microsoft Visual
+ C++ family of compilers
+
+ Fundementally what they do is instruct the linker to use these two libraries
+ for the resolution of symbols. In essence, this is the equivalent of adding
+ these two libraries to either the Makefile or project file.
+
+ This is NOT a recommended technique, and certainly is unlikely to be used
+ anywhere else in wxWidgets given it is so specific to not only wxMSW, but
+ also the VC compiler. However, in the case of opengl support, it's an
+ applicable technique as opengl is optional in setup.h This code (wrapped by
+ wxUSE_GLCANVAS), now allows opengl support to be added purely by modifying
+ setup.h rather than by having to modify either the project or DSP fle.
+
+ See MSDN for further information on the exact usage of these commands.
+*/
+#ifdef _MSC_VER
+# pragma comment( lib, "opengl32" )
+# pragma comment( lib, "glu32" )
+#endif
-wxChar wxGLCanvasClassName[] = wxT("wxGLCanvasClass");
+
+static const wxChar *wxGLCanvasClassName = wxT("wxGLCanvasClass");
+static const wxChar *wxGLCanvasClassNameNoRedraw = wxT("wxGLCanvasClassNR");
LRESULT WXDLLEXPORT APIENTRY _EXPORT wxWndProc(HWND hWnd, UINT message,
WPARAM wParam, LPARAM lParam);
* GLContext implementation
*/
-wxGLContext::wxGLContext(bool isRGB, wxGLCanvas *win, const wxPalette& palette)
+wxGLContext::wxGLContext(bool WXUNUSED(isRGB), wxGLCanvas *win, const wxPalette& WXUNUSED(palette))
{
m_window = win;
m_hDC = win->GetHDC();
m_glContext = wglCreateContext((HDC) m_hDC);
- wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGl context") );
+ wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGL context") );
wglMakeCurrent((HDC) m_hDC, m_glContext);
}
wxGLContext::wxGLContext(
- bool isRGB, wxGLCanvas *win,
- const wxPalette& palette,
+ bool WXUNUSED(isRGB), wxGLCanvas *win,
+ const wxPalette& WXUNUSED(palette),
const wxGLContext *other /* for sharing display lists */
)
{
m_hDC = win->GetHDC();
m_glContext = wglCreateContext((HDC) m_hDC);
- wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGl context") );
+ wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGL context") );
if( other != 0 )
wglShareLists( other->m_glContext, m_glContext );
*/
}
-void wxGLContext::SetColour(const char *colour)
+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)
- {
- r = (float)(col->Red()/256.0);
- g = (float)(col->Green()/256.0);
- b = (float)(col->Blue()/256.0);
- glColor3f( r, g, b);
- }
+ 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, wxScrolledWindow)
+IMPLEMENT_CLASS(wxGLCanvas, wxWindow)
-BEGIN_EVENT_TABLE(wxGLCanvas, wxScrolledWindow)
+BEGIN_EVENT_TABLE(wxGLCanvas, wxWindow)
EVT_SIZE(wxGLCanvas::OnSize)
EVT_PALETTE_CHANGED(wxGLCanvas::OnPaletteChanged)
EVT_QUERY_NEW_PALETTE(wxGLCanvas::OnQueryNewPalette)
wxGLCanvas::wxGLCanvas(wxWindow *parent, wxWindowID id,
const wxPoint& pos, const wxSize& size, long style, const wxString& name,
- int *attribList, const wxPalette& palette) : wxScrolledWindow()
+ int *attribList, const wxPalette& palette) : wxWindow()
{
m_glContext = (wxGLContext*) NULL;
if ( ret )
{
- SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
- SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+ SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
}
m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
const wxGLContext *shared, wxWindowID id,
const wxPoint& pos, const wxSize& size, long style, const wxString& name,
int *attribList, const wxPalette& palette )
- : wxScrolledWindow()
+ : wxWindow()
{
m_glContext = (wxGLContext*) NULL;
if ( ret )
{
- SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
- SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+ SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
}
m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
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 ):
- wxScrolledWindow()
+ wxWindow()
{
m_glContext = (wxGLContext*) NULL;
if ( ret )
{
- SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_3DFACE));
- SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+ SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE));
}
m_hDC = (WXHDC) ::GetDC((HWND) GetHWND());
::ReleaseDC((HWND) GetHWND(), (HDC) m_hDC);
}
-// Replaces wxWindow::Create functionality, since we need to use a different window class
-bool wxGLCanvas::Create(wxWindow *parent, wxWindowID id,
- const wxPoint& pos, const wxSize& size, long style, const wxString& name)
+// Replaces wxWindow::Create functionality, since we need to use a different
+// window class
+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):
-
- 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.
- */
-
- static bool registeredGLCanvasClass = FALSE;
+ static bool s_registeredGLCanvasClass = FALSE;
// We have to register a special window class because we need
// the CS_OWNDC style for GLCanvas.
only way to prevent this, the only reliable means, is to set CS_OWNDC."
*/
- if (!registeredGLCanvasClass)
+ if (!s_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;
// Register the GLCanvas class name
wndclass.hbrBackground = (HBRUSH)NULL;
wndclass.lpszClassName = wxGLCanvasClassName;
- wndclass.style = styleNormal;
+ wndclass.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | CS_OWNDC;
- if ( !RegisterClass(&wndclass) )
+ if ( !::RegisterClass(&wndclass) )
{
wxLogLastError(wxT("RegisterClass(wxGLCanvasClass)"));
return FALSE;
}
- registeredGLCanvasClass = TRUE;
+ // Register the GLCanvas class name for windows which don't do full repaint
+ // on resize
+ wndclass.lpszClassName = wxGLCanvasClassNameNoRedraw;
+ wndclass.style &= ~(CS_HREDRAW | CS_VREDRAW);
+
+ if ( !::RegisterClass(&wndclass) )
+ {
+ wxLogLastError(wxT("RegisterClass(wxGLCanvasClassNameNoRedraw)"));
+
+ ::UnregisterClass(wxGLCanvasClassName, wxhInstance);
+
+ return FALSE;
+ }
+
+ s_registeredGLCanvasClass = TRUE;
}
wxCHECK_MSG( parent, FALSE, wxT("can't create wxWindow without parent") );
parent->AddChild(this);
DWORD msflags = 0;
- if ( style & wxBORDER )
- msflags |= WS_BORDER;
- if ( style & wxTHICK_FRAME )
- msflags |= WS_THICKFRAME;
/*
A general rule with OpenGL and Win32 is that any window that will have a
books that contain the wgl function descriptions.
*/
- msflags |= WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS;
- // if ( style & wxCLIP_CHILDREN )
- // msflags |= WS_CLIPCHILDREN;
- msflags |= WS_CLIPCHILDREN;
-
- bool want3D;
- WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D);
-
- // 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;
- }
+ WXDWORD exStyle = 0;
+ msflags |= WS_CHILD | WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
+ msflags |= MSWGetStyle(style, & 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;
- }
-
- MSWCreate(m_windowId, parent, wxGLCanvasClassName, this, NULL,
- pos.x, pos.y,
- WidthDefault(size.x), HeightDefault(size.y),
- msflags, NULL, exStyle);
-
- return TRUE;
+ return MSWCreate(wxGLCanvasClassName, NULL, pos, size, msflags, exStyle);
}
-void wxGLCanvas::SetupPixelFormat(int *attribList) // (HDC hDC)
+static void AdjustPFDForAttributes(PIXELFORMATDESCRIPTOR& pfd, int *attribList)
{
- 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 */
- };
-
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_LEVEL:
// this member looks like it may be obsolete
if (attribList[arg] > 0) {
- pfd.iLayerType = PFD_OVERLAY_PLANE;
+ pfd.iLayerType = (BYTE)PFD_OVERLAY_PLANE;
} else if (attribList[arg] < 0) {
- pfd.iLayerType = PFD_UNDERLAY_PLANE;
+ pfd.iLayerType = (BYTE)PFD_UNDERLAY_PLANE;
} else {
- pfd.iLayerType = PFD_MAIN_PLANE;
+ pfd.iLayerType = (BYTE)PFD_MAIN_PLANE;
}
arg++;
break;
// doesn't count in cColorBits
pfd.cAlphaBits = attribList[arg++];
break;
- case WX_GL_DEPTH_SIZE:
+ case WX_GL_DEPTH_SIZE:
pfd.cDepthBits = attribList[arg++];
break;
- case WX_GL_STENCIL_SIZE:
+ case WX_GL_STENCIL_SIZE:
pfd.cStencilBits = attribList[arg++];
break;
case WX_GL_MIN_ACCUM_RED:
}
}
}
- pixelFormat = ChoosePixelFormat((HDC) m_hDC, &pfd);
+}
+
+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 */
+ };
+
+ AdjustPFDForAttributes(pfd, attribList);
+
+ int 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);
+ wxLogLastError(_T("ChoosePixelFormat"));
}
-
- if (SetPixelFormat((HDC) m_hDC, pixelFormat, &pfd) != TRUE) {
- MessageBox(WindowFromDC((HDC) m_hDC), wxT("SetPixelFormat failed."), wxT("Error"),
- MB_ICONERROR | MB_OK);
- exit(1);
+ else {
+ if ( !::SetPixelFormat((HDC) m_hDC, pixelFormat, &pfd) ) {
+ wxLogLastError(_T("SetPixelFormat"));
+ }
}
}
}
else
{
- return;
+ return;
}
m_palette = palette;
/* build a simple RGB color palette */
{
- int redMask = (1 << pfd.cRedBits) - 1;
- int greenMask = (1 << pfd.cGreenBits) - 1;
- int blueMask = (1 << pfd.cBlueBits) - 1;
- int i;
-
-
for (i=0; i<paletteSize; ++i) {
- pPal->palPalEntry[i].peRed =
- (((i >> pfd.cRedShift) & redMask) * 255) / redMask;
- pPal->palPalEntry[i].peGreen =
- (((i >> pfd.cGreenShift) & greenMask) * 255) / greenMask;
- pPal->palPalEntry[i].peBlue =
- (((i >> pfd.cBlueShift) & blueMask) * 255) / blueMask;
- pPal->palPalEntry[i].peFlags = 0;
- }
+ int redMask = (1 << pfd.cRedBits) - 1;
+ int greenMask = (1 << pfd.cGreenBits) - 1;
+ int blueMask = (1 << pfd.cBlueBits) - 1;
+ int i;
+
+ for (i=0; i<paletteSize; ++i) {
+ pPal->palPalEntry[i].peRed =
+ (((i >> pfd.cRedShift) & redMask) * 255) / redMask;
+ pPal->palPalEntry[i].peGreen =
+ (((i >> pfd.cGreenShift) & greenMask) * 255) / greenMask;
+ pPal->palPalEntry[i].peBlue =
+ (((i >> pfd.cBlueShift) & blueMask) * 255) / blueMask;
+ pPal->palPalEntry[i].peFlags = 0;
+ }
}
HPALETTE hPalette = CreatePalette(pPal);
m_glContext->SwapBuffers();
}
-void wxGLCanvas::OnSize(wxSizeEvent& event)
+void wxGLCanvas::OnSize(wxSizeEvent& WXUNUSED(event))
{
- int width, height;
- GetClientSize(& width, & height);
-
- if (m_glContext)
- {
- m_glContext->SetCurrent();
-
- glViewport(0, 0, (GLint)width, (GLint)height);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 15.0 );
- glMatrixMode(GL_MODELVIEW);
- }
}
void wxGLCanvas::SetCurrent()
}
}
-void wxGLCanvas::SetColour(const char *colour)
+void wxGLCanvas::SetColour(const wxChar *colour)
{
if (m_glContext)
m_glContext->SetColour(colour);
/* Give extensions proper function names. */
/* EXT_vertex_array */
-void glArrayElementEXT(GLint i)
+void glArrayElementEXT(GLint WXUNUSED(i))
{
}
-void glColorPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count, const GLvoid *pointer)
+void glColorPointerEXT(GLint WXUNUSED(size), GLenum WXUNUSED(type), GLsizei WXUNUSED(stride), GLsizei WXUNUSED(count), const GLvoid *WXUNUSED(pointer))
{
}
#endif
}
-void glEdgeFlagPointerEXT(GLsizei stride, GLsizei count, const GLboolean *pointer)
+void glEdgeFlagPointerEXT(GLsizei WXUNUSED(stride), GLsizei WXUNUSED(count), const GLboolean *WXUNUSED(pointer))
{
}
-void glGetPointervEXT(GLenum pname, GLvoid* *params)
+void glGetPointervEXT(GLenum WXUNUSED(pname), GLvoid* *WXUNUSED(params))
{
}
-void glIndexPointerEXT(GLenum type, GLsizei stride, GLsizei count, const GLvoid *pointer)
+void glIndexPointerEXT(GLenum WXUNUSED(type), GLsizei WXUNUSED(stride), GLsizei WXUNUSED(count), const GLvoid *WXUNUSED(pointer))
{
}
#endif
}
-void glTexCoordPointerEXT(GLint size, GLenum type, GLsizei stride, GLsizei count, const GLvoid *pointer)
+void glTexCoordPointerEXT(GLint WXUNUSED(size), GLenum WXUNUSED(type), GLsizei WXUNUSED(stride), GLsizei WXUNUSED(count), const GLvoid *WXUNUSED(pointer))
{
}
}
/* EXT_color_subtable */
-void glColorSubtableEXT(GLenum target, GLsizei start, GLsizei count, GLenum format, GLenum type, const GLvoid *table)
+void glColorSubtableEXT(GLenum WXUNUSED(target), GLsizei WXUNUSED(start), GLsizei WXUNUSED(count), GLenum WXUNUSED(format), GLenum WXUNUSED(type), const GLvoid *WXUNUSED(table))
{
}
/* EXT_color_table */
-void glColorTableEXT(GLenum target, GLenum internalformat, GLsizei width, GLenum format, GLenum type, const GLvoid *table)
+void glColorTableEXT(GLenum WXUNUSED(target), GLenum WXUNUSED(internalformat), GLsizei WXUNUSED(width), GLenum WXUNUSED(format), GLenum WXUNUSED(type), const GLvoid *WXUNUSED(table))
{
}
-void glCopyColorTableEXT(GLenum target, GLenum internalformat, GLint x, GLint y, GLsizei width)
+void glCopyColorTableEXT(GLenum WXUNUSED(target), GLenum WXUNUSED(internalformat), GLint WXUNUSED(x), GLint WXUNUSED(y), GLsizei WXUNUSED(width))
{
}
-void glGetColorTableEXT(GLenum target, GLenum format, GLenum type, GLvoid *table)
+void glGetColorTableEXT(GLenum WXUNUSED(target), GLenum WXUNUSED(format), GLenum WXUNUSED(type), GLvoid *WXUNUSED(table))
{
}
-void glGetColorTableParamaterfvEXT(GLenum target, GLenum pname, GLfloat *params)
+void glGetColorTableParamaterfvEXT(GLenum WXUNUSED(target), GLenum WXUNUSED(pname), GLfloat *WXUNUSED(params))
{
}
-void glGetColorTavleParameterivEXT(GLenum target, GLenum pname, GLint *params)
+void glGetColorTavleParameterivEXT(GLenum WXUNUSED(target), GLenum WXUNUSED(pname), GLint *WXUNUSED(params))
{
}
/* SGI_compiled_vertex_array */
-void glLockArraysSGI(GLint first, GLsizei count)
+void glLockArraysSGI(GLint WXUNUSED(first), GLsizei WXUNUSED(count))
{
}
/* SGI_cull_vertex */
-void glCullParameterdvSGI(GLenum pname, GLdouble* params)
+void glCullParameterdvSGI(GLenum WXUNUSED(pname), GLdouble* WXUNUSED(params))
{
}
-void glCullParameterfvSGI(GLenum pname, GLfloat* params)
+void glCullParameterfvSGI(GLenum WXUNUSED(pname), GLfloat* WXUNUSED(params))
{
}
/* SGI_index_func */
-void glIndexFuncSGI(GLenum func, GLclampf ref)
+void glIndexFuncSGI(GLenum WXUNUSED(func), GLclampf WXUNUSED(ref))
{
}
/* SGI_index_material */
-void glIndexMaterialSGI(GLenum face, GLenum mode)
+void glIndexMaterialSGI(GLenum WXUNUSED(face), GLenum WXUNUSED(mode))
{
}
/* WIN_swap_hint */
-void glAddSwapHintRectWin(GLint x, GLint y, GLsizei width, GLsizei height)
+void glAddSwapHintRectWin(GLint WXUNUSED(x), GLint WXUNUSED(y), GLsizei WXUNUSED(width), GLsizei WXUNUSED(height))
+{
+}
+
+
+//---------------------------------------------------------------------------
+// wxGLApp
+//---------------------------------------------------------------------------
+
+IMPLEMENT_CLASS(wxGLApp, wxApp)
+
+bool wxGLApp::InitGLVisual(int *attribList)
+{
+ 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 */
+ };
+
+ AdjustPFDForAttributes(pfd, attribList);
+
+ // use DC for whole (root) screen, since no windows have yet been created
+ pixelFormat = ChoosePixelFormat(ScreenHDC(), &pfd);
+
+ if (pixelFormat == 0) {
+ wxLogError(_("Failed to initialize OpenGL"));
+ return FALSE;
+ }
+
+ return TRUE;
+}
+
+wxGLApp::~wxGLApp()
{
}
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