// ----------------------------------------------------------------------------
#ifndef WGL_ARB_pixel_format
-#define WGL_NUMBER_PIXEL_FORMATS_ARB 0x2000
#define WGL_DRAW_TO_WINDOW_ARB 0x2001
-#define WGL_DRAW_TO_BITMAP_ARB 0x2002
#define WGL_ACCELERATION_ARB 0x2003
-#define WGL_NEED_PALETTE_ARB 0x2004
-#define WGL_NEED_SYSTEM_PALETTE_ARB 0x2005
-#define WGL_SWAP_LAYER_BUFFERS_ARB 0x2006
-#define WGL_SWAP_METHOD_ARB 0x2007
#define WGL_NUMBER_OVERLAYS_ARB 0x2008
#define WGL_NUMBER_UNDERLAYS_ARB 0x2009
-#define WGL_TRANSPARENT_ARB 0x200A
-#define WGL_TRANSPARENT_RED_VALUE_ARB 0x2037
-#define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038
-#define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039
-#define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A
-#define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B
-#define WGL_SHARE_DEPTH_ARB 0x200C
-#define WGL_SHARE_STENCIL_ARB 0x200D
-#define WGL_SHARE_ACCUM_ARB 0x200E
-#define WGL_SUPPORT_GDI_ARB 0x200F
#define WGL_SUPPORT_OPENGL_ARB 0x2010
#define WGL_DOUBLE_BUFFER_ARB 0x2011
#define WGL_STEREO_ARB 0x2012
-#define WGL_PIXEL_TYPE_ARB 0x2013
#define WGL_COLOR_BITS_ARB 0x2014
#define WGL_RED_BITS_ARB 0x2015
-#define WGL_RED_SHIFT_ARB 0x2016
#define WGL_GREEN_BITS_ARB 0x2017
-#define WGL_GREEN_SHIFT_ARB 0x2018
#define WGL_BLUE_BITS_ARB 0x2019
-#define WGL_BLUE_SHIFT_ARB 0x201A
#define WGL_ALPHA_BITS_ARB 0x201B
-#define WGL_ALPHA_SHIFT_ARB 0x201C
-#define WGL_ACCUM_BITS_ARB 0x201D
#define WGL_ACCUM_RED_BITS_ARB 0x201E
#define WGL_ACCUM_GREEN_BITS_ARB 0x201F
#define WGL_ACCUM_BLUE_BITS_ARB 0x2020
#define WGL_DEPTH_BITS_ARB 0x2022
#define WGL_STENCIL_BITS_ARB 0x2023
#define WGL_AUX_BUFFERS_ARB 0x2024
-#define WGL_NO_ACCELERATION_ARB 0x2025
-#define WGL_GENERIC_ACCELERATION_ARB 0x2026
#define WGL_FULL_ACCELERATION_ARB 0x2027
-#define WGL_SWAP_EXCHANGE_ARB 0x2028
-#define WGL_SWAP_COPY_ARB 0x2029
-#define WGL_SWAP_UNDEFINED_ARB 0x202A
-#define WGL_TYPE_RGBA_ARB 0x202B
-#define WGL_TYPE_COLORINDEX_ARB 0x202C
#endif
#ifndef WGL_ARB_multisample
// wxGLCanvas construction
// ----------------------------------------------------------------------------
+static int ChoosePixelFormatARB(HDC hdc, const int *attribList);
+
void wxGLCanvas::Init()
{
#if WXWIN_COMPATIBILITY_2_8
// 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,
- const int *attribList,
- const wxPalette& palette)
+bool wxGLCanvas::CreateWindow(wxWindow *parent,
+ wxWindowID id,
+ const wxPoint& pos,
+ const wxSize& size,
+ long style,
+ const wxString& name)
{
wxCHECK_MSG( parent, false, wxT("can't create wxWindow without parent") );
if ( !m_hDC )
return false;
- if ( !DoSetup(attribList) )
+ return true;
+}
+
+bool wxGLCanvas::Create(wxWindow *parent,
+ wxWindowID id,
+ const wxPoint& pos,
+ const wxSize& size,
+ long style,
+ const wxString& name,
+ const int *attribList,
+ const wxPalette& palette)
+{
+ // Create the window first: we will either use it as is or use it to query
+ // for multisampling support and recreate it later with another pixel format
+ if ( !CreateWindow(parent, id, pos, size, style, name) )
return false;
+ PIXELFORMATDESCRIPTOR pfd;
+ const int setupVal = DoSetup(pfd, attribList);
+ if ( setupVal == 0 ) // PixelFormat error
+ return false;
+
+ if ( setupVal == -1 ) // FSAA requested
+ {
+ // now that we have a valid OpenGL window, query it for FSAA support
+ int pixelFormat;
+ {
+ wxGLContext ctx(this);
+ ctx.SetCurrent(*this);
+ pixelFormat = ::ChoosePixelFormatARB(m_hDC, attribList);
+ }
+
+ if ( pixelFormat > 0 )
+ {
+ // from http://msdn.microsoft.com/en-us/library/ms537559(VS.85).aspx:
+ //
+ // Setting the pixel format of a window more than once can
+ // lead to significant complications for the Window Manager
+ // and for multithread applications, so it is not allowed. An
+ // application can only set the pixel format of a window one
+ // time. Once a window's pixel format is set, it cannot be
+ // changed.
+ //
+ // so we need to delete the old window and create the new one
+
+ // destroy Window
+ ::ReleaseDC(GetHwnd(), m_hDC);
+ m_hDC = 0;
+
+ parent->RemoveChild(this);
+ const HWND hwnd = GetHwnd();
+ DissociateHandle(); // will do SetHWND(0);
+ ::DestroyWindow(hwnd);
+
+ // now recreate with FSAA pixelFormat
+ if ( !CreateWindow(parent, id, pos, size, style, name) )
+ return false;
+
+ if ( !::SetPixelFormat(m_hDC, pixelFormat, &pfd) )
+ {
+ wxLogLastError(_T("SetPixelFormat"));
+ return false;
+ }
+ }
+ }
+
#if wxUSE_PALETTE
if ( !SetupPalette(palette) )
return false;
pfd.dwFlags &= ~PFD_DOUBLEBUFFER;
pfd.iPixelType = PFD_TYPE_COLORINDEX;
+ bool requestFSAA = false;
for ( int arg = 0; attribList[arg]; )
{
switch ( attribList[arg++] )
case WX_GL_SAMPLE_BUFFERS:
case WX_GL_SAMPLES:
- return -1;
+ // There is no support for multisample when using PIXELFORMATDESCRIPTOR
+ requestFSAA = true; // Remember that multi sample is requested.
+ arg++; // will call ChoosePixelFormatARB() later
+ break;
}
}
- return 1;
+ return requestFSAA ? -1 : 1;
}
/* static */
return 0;
case -1:
- return ::ChoosePixelFormatARB(hdc, attribList);
+ // requestFSAA == true, will continue as normal
+ // in order to query later for a FSAA pixelformat
+ return -1;
}
}
return wxGLCanvas::ChooseMatchingPixelFormat(ScreenHDC(), attribList) > 0;
}
-bool wxGLCanvas::DoSetup(const int *attribList)
+int wxGLCanvas::DoSetup(PIXELFORMATDESCRIPTOR &pfd, const int *attribList)
{
- PIXELFORMATDESCRIPTOR pfd;
- const int pixelFormat = ChooseMatchingPixelFormat(m_hDC, attribList, &pfd);
+ int pixelFormat = ChooseMatchingPixelFormat(m_hDC, attribList, &pfd);
+
+ const bool requestFSAA = pixelFormat == -1;
+ if ( requestFSAA )
+ pixelFormat = ::ChoosePixelFormat(m_hDC, &pfd);
+
if ( !pixelFormat )
{
wxLogLastError(_T("ChoosePixelFormat"));
- return false;
+ return 0;
}
if ( !::SetPixelFormat(m_hDC, pixelFormat, &pfd) )
{
wxLogLastError(_T("SetPixelFormat"));
- return false;
+ return 0;
}
- return true;
+ return requestFSAA ? -1 : 1;
}
// ----------------------------------------------------------------------------
projects / wxWidgets.git / blobdiff