added a simple wrapper class for shared opengl contexts (like in the gtk and msw
ports) git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@7900 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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@ -38,28 +38,209 @@ static int bitcount( unsigned long n )
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}
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#endif
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/*
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* GLContext implementation
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*/
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IMPLEMENT_CLASS(wxGLContext,wxObject)
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wxGLContext::wxGLContext( bool WXUNUSED(isRGB), wxWindow *win,
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const wxPalette& WXUNUSED(palette) )
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{
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m_window = win;
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// m_widget = win->m_wxwindow;
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wxGLCanvas *gc = (wxGLCanvas*) win;
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XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
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wxCHECK_RET( vi, "invalid visual for OpenGl" );
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m_glContext = glXCreateContext( (Display *)m_window->GetXDisplay(), vi,
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None, GL_TRUE);
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wxCHECK_RET( m_glContext, "Couldn't create OpenGl context" );
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}
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wxGLContext::wxGLContext(
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bool WXUNUSED(isRGB), wxWindow *win,
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const wxPalette& WXUNUSED(palette),
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const wxGLContext *other /* for sharing display lists */
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)
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{
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m_window = win;
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// m_widget = win->m_wxwindow;
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wxGLCanvas *gc = (wxGLCanvas*) win;
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XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
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wxCHECK_RET( vi, "invalid visual for OpenGl" );
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if( other != 0 )
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m_glContext = glXCreateContext( (Display *)m_window->GetXDisplay(), vi,
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other->m_glContext, GL_TRUE );
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else
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m_glContext = glXCreateContext( (Display *)m_window->GetXDisplay(), vi,
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None, GL_TRUE );
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wxCHECK_RET( m_glContext, "Couldn't create OpenGl context" );
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}
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wxGLContext::~wxGLContext()
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{
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if (!m_glContext) return;
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if (m_glContext == glXGetCurrentContext())
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{
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glXMakeCurrent( (Display*) m_window->GetXDisplay(), None, NULL);
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}
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glXDestroyContext( (Display*) m_window->GetXDisplay(), m_glContext );
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}
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void wxGLContext::SwapBuffers()
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{
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if (m_glContext)
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{
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Display* display = (Display*) m_window->GetXDisplay();
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glXSwapBuffers(display, (Window) m_window->GetXWindow());
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}
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}
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void wxGLContext::SetCurrent()
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{
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if (m_glContext)
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{
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Display* display = (Display*) m_window->GetXDisplay();
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glXMakeCurrent(display, (Window) m_window->GetXWindow(),
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m_glContext );;
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}
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}
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void wxGLContext::SetColour(const char *colour)
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{
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wxColour *the_colour = wxTheColourDatabase->FindColour(colour);
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if(the_colour) {
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GLboolean b;
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glGetBooleanv(GL_RGBA_MODE, &b);
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if(b) {
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glColor3ub(the_colour->Red(),
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the_colour->Green(),
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the_colour->Blue());
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} else {
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GLint pix = (GLint)the_colour->m_pixel;
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if(pix == -1) {
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XColor exact_def;
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exact_def.red = (unsigned short)the_colour->Red() << 8;
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exact_def.green = (unsigned short)the_colour->Green() << 8;
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exact_def.blue = (unsigned short)the_colour->Blue() << 8;
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exact_def.flags = DoRed | DoGreen | DoBlue;
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if(!XAllocColor((Display*) m_window->GetXDisplay(),
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(Colormap) wxTheApp->GetMainColormap(m_window->GetXDisplay()),
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&exact_def)) {
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wxDebugMsg("wxGLCanvas: cannot allocate color\n");
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return;
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}
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pix = the_colour->m_pixel = exact_def.pixel;
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}
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glIndexi(pix);
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}
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}
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}
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void wxGLContext::SetupPixelFormat()
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{
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}
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void wxGLContext::SetupPalette( const wxPalette& WXUNUSED(palette) )
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{
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}
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wxPalette wxGLContext::CreateDefaultPalette()
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{
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return wxNullPalette;
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}
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/*
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* GLCanvas implementation
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*/
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IMPLEMENT_CLASS(wxGLCanvas, wxScrolledWindow)
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wxGLCanvas::wxGLCanvas(wxWindow *parent, wxWindowID id = -1, const wxPoint& pos,
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BEGIN_EVENT_TABLE(wxGLCanvas, wxScrolledWindow)
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// EVT_SIZE(wxGLCanvas::OnSize)
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END_EVENT_TABLE()
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wxGLCanvas::wxGLCanvas( wxWindow *parent, wxWindowID id,
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const wxPoint& pos, const wxSize& size,
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long style, const wxString& name,
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int *attribList,
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const wxPalette& palette )
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: wxScrolledWindow(parent, id, pos, size, style, name)
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{
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Create( parent, NULL, NULL, id, pos, size, style, name, attribList, palette );
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}
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wxGLCanvas::wxGLCanvas( wxWindow *parent,
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const wxGLContext *shared,
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wxWindowID id,
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const wxPoint& pos, const wxSize& size,
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long style, const wxString& name,
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int *attribList,
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const wxPalette& palette )
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: wxScrolledWindow(parent, id, pos, size, style, name)
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{
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Create( parent, shared, NULL, id, pos, size, style, name, attribList, palette );
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}
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wxGLCanvas::wxGLCanvas( wxWindow *parent,
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const wxGLCanvas *shared,
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wxWindowID id,
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const wxPoint& pos, const wxSize& size,
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long style, const wxString& name,
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int *attribList,
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const wxPalette& palette )
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: wxScrolledWindow(parent, id, pos, size, style, name)
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{
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Create( parent, NULL, shared, id, pos, size, style, name, attribList, palette );
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}
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/*
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bool wxGLCanvas::Create(wxWindow *parent,
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const wxGLContext *shared, const wxGLCanvas *shared_context_of,
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wxWindowID id = -1, const wxPoint& pos,
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const wxSize& size, long style,
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const wxString& name, int *attribList, const wxPalette& palette):
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wxScrolledWindow(parent, id, pos, size, style, name)
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*/
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bool wxGLCanvas::Create( wxWindow *parent,
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const wxGLContext *shared,
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const wxGLCanvas *shared_context_of,
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wxWindowID id,
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const wxPoint& pos, const wxSize& size,
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long style, const wxString& name,
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int *attribList,
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const wxPalette& palette)
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{
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XVisualInfo *vi, vi_templ;
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XWindowAttributes xwa;
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int val, n;
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m_sharedContext = (wxGLContext*)shared; // const_cast
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m_sharedContextOf = (wxGLCanvas*)shared_context_of; // const_cast
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m_glContext = (wxGLContext*) NULL;
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Display* display = (Display*) GetXDisplay();
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glx_cx = 0;
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// Check for the presence of the GLX extension
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if(!glXQueryExtension(display, NULL, NULL)) {
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wxDebugMsg("wxGLCanvas: GLX extension is missing\n");
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return;
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return false;
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}
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if(attribList) {
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@ -107,7 +288,7 @@ wxGLCanvas::wxGLCanvas(wxWindow *parent, wxWindowID id = -1, const wxPoint& pos,
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attribList = (int*) data;
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// Get an appropriate visual
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vi = glXChooseVisual(display, DefaultScreen(display), attribList);
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if(!vi) return;
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if(!vi) return false;
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// Here we should make sure that vi is the same visual as the
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// one used by the xwindow drawable in wxCanvas. However,
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@ -118,9 +299,9 @@ wxGLCanvas::wxGLCanvas(wxWindow *parent, wxWindowID id = -1, const wxPoint& pos,
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XGetWindowAttributes(display, (Window) GetXWindow(), &xwa);
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vi_templ.visualid = XVisualIDFromVisual(xwa.visual);
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vi = XGetVisualInfo(display, VisualIDMask, &vi_templ, &n);
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if(!vi) return;
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if(!vi) return false;
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glXGetConfig(display, vi, GLX_USE_GL, &val);
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if(!val) return;
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if(!val) return false;
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// Basically, this is it. It should be possible to use vi
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// in glXCreateContext() below. But this fails with Mesa.
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// I notified the Mesa author about it; there may be a fix.
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@ -145,65 +326,62 @@ wxGLCanvas::wxGLCanvas(wxWindow *parent, wxWindowID id = -1, const wxPoint& pos,
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a_list[n++] = val;
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}
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a_list[n] = None;
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XFree(vi);
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// XFree(vi);
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vi = glXChooseVisual(display, DefaultScreen(display), a_list);
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if(!vi) return;
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if(!vi) return false;
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#endif /* OLD_MESA */
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}
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m_vi = vi; // safe for later use
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wxCHECK_MSG( m_vi, FALSE, "required visual couldn't be found" );
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// Create the GLX context and make it current
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glx_cx = glXCreateContext(display, vi, 0, GL_TRUE);
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wxGLContext *share= m_sharedContext;
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if (share==NULL && m_sharedContextOf)
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share = m_sharedContextOf->GetContext();
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m_glContext = new wxGLContext( TRUE, this, wxNullPalette, share );
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#ifndef OLD_MESA
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XFree(vi);
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// XFree(vi);
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#endif
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SetCurrent();
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return true;
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}
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wxGLCanvas::~wxGLCanvas(void)
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{
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Display* display = (Display*) GetXDisplay();
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if(glx_cx) glXDestroyContext(display, glx_cx);
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XVisualInfo *vi = (XVisualInfo *) m_vi;
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if (vi) XFree( vi );
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if (m_glContext) delete m_glContext;
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// Display* display = (Display*) GetXDisplay();
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// if(glx_cx) glXDestroyContext(display, glx_cx);
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}
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void wxGLCanvas::SwapBuffers()
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{
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Display* display = (Display*) GetXDisplay();
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if(glx_cx) glXSwapBuffers(display, (Window) GetXWindow());
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if( m_glContext ) m_glContext->SwapBuffers();
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// Display* display = (Display*) GetXDisplay();
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// if(glx_cx) glXSwapBuffers(display, (Window) GetXWindow());
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}
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void wxGLCanvas::SetCurrent()
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{
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Display* display = (Display*) GetXDisplay();
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if(glx_cx) glXMakeCurrent(display, (Window) GetXWindow(), glx_cx);
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if( m_glContext ) m_glContext->SetCurrent();
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// Display* display = (Display*) GetXDisplay();
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// if(glx_cx) glXMakeCurrent(display, (Window) GetXWindow(), glx_cx);
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}
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void wxGLCanvas::SetColour(const char *col)
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{
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wxColour *the_colour = wxTheColourDatabase->FindColour(col);
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if(the_colour) {
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GLboolean b;
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glGetBooleanv(GL_RGBA_MODE, &b);
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if(b) {
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glColor3ub(the_colour->Red(),
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the_colour->Green(),
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the_colour->Blue());
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} else {
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GLint pix = (GLint)the_colour->m_pixel;
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if(pix == -1) {
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XColor exact_def;
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exact_def.red = (unsigned short)the_colour->Red() << 8;
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exact_def.green = (unsigned short)the_colour->Green() << 8;
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exact_def.blue = (unsigned short)the_colour->Blue() << 8;
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exact_def.flags = DoRed | DoGreen | DoBlue;
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if(!XAllocColor((Display*) GetXDisplay(), (Colormap) wxTheApp->GetMainColormap(GetXDisplay()), &exact_def)) {
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wxDebugMsg("wxGLCanvas: cannot allocate color\n");
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return;
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}
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pix = the_colour->m_pixel = exact_def.pixel;
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}
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glIndexi(pix);
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}
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}
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if( m_glContext ) m_glContext->SetColour(col);
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}
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#endif
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