// Created: 1995, 1999
// RCS-ID: $Id$
// Copyright: (c) Julian Smart, Wolfram Gloger
-// Licence: wxWindows licence
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
{
int bits;
for (bits=0; n>0;) {
- if(n & 1) bits++;
- n = n >> 1;
+ if(n & 1) bits++;
+ n = n >> 1;
}
return bits;
}
#endif
+/*
+ * GLContext implementation
+ */
+
+IMPLEMENT_CLASS(wxGLContext,wxObject)
+
+wxGLContext::wxGLContext( bool WXUNUSED(isRGB), wxWindow *win,
+ const wxPalette& WXUNUSED(palette) )
+{
+ m_window = win;
+ // m_widget = win->m_wxwindow;
+
+ wxGLCanvas *gc = (wxGLCanvas*) win;
+ XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
+
+ wxCHECK_RET( vi, "invalid visual for OpenGl" );
+
+ m_glContext = glXCreateContext( (Display *)m_window->GetXDisplay(), vi,
+ None, GL_TRUE);
+
+ wxCHECK_RET( m_glContext, "Couldn't create OpenGl context" );
+}
+
+wxGLContext::wxGLContext(
+ bool WXUNUSED(isRGB), wxWindow *win,
+ const wxPalette& WXUNUSED(palette),
+ const wxGLContext *other /* for sharing display lists */
+)
+{
+ m_window = win;
+ // m_widget = win->m_wxwindow;
+
+ wxGLCanvas *gc = (wxGLCanvas*) win;
+ XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
+
+ wxCHECK_RET( vi, "invalid visual for OpenGl" );
+
+ if( other != 0 )
+ m_glContext = glXCreateContext( (Display *)m_window->GetXDisplay(), vi,
+ other->m_glContext, GL_TRUE );
+ else
+ m_glContext = glXCreateContext( (Display *)m_window->GetXDisplay(), vi,
+ None, GL_TRUE );
+
+ wxCHECK_RET( m_glContext, "Couldn't create OpenGl context" );
+}
+
+wxGLContext::~wxGLContext()
+{
+ if (!m_glContext) return;
+
+ if (m_glContext == glXGetCurrentContext())
+ {
+ glXMakeCurrent( (Display*) m_window->GetXDisplay(), None, NULL);
+ }
+
+ glXDestroyContext( (Display*) m_window->GetXDisplay(), m_glContext );
+}
+
+void wxGLContext::SwapBuffers()
+{
+ if (m_glContext)
+ {
+ Display* display = (Display*) m_window->GetXDisplay();
+ glXSwapBuffers(display, (Window) m_window->GetXWindow());
+ }
+}
+
+void wxGLContext::SetCurrent()
+{
+ if (m_glContext)
+ {
+ Display* display = (Display*) m_window->GetXDisplay();
+ glXMakeCurrent(display, (Window) m_window->GetXWindow(),
+ m_glContext );;
+ }
+}
+
+void wxGLContext::SetColour(const char *colour)
+{
+ wxColour *the_colour = wxTheColourDatabase->FindColour(colour);
+ if(the_colour) {
+ GLboolean b;
+ glGetBooleanv(GL_RGBA_MODE, &b);
+ if(b) {
+ glColor3ub(the_colour->Red(),
+ the_colour->Green(),
+ the_colour->Blue());
+ } else {
+ GLint pix = (GLint)the_colour->m_pixel;
+ if(pix == -1) {
+ XColor exact_def;
+ exact_def.red = (unsigned short)the_colour->Red() << 8;
+ exact_def.green = (unsigned short)the_colour->Green() << 8;
+ exact_def.blue = (unsigned short)the_colour->Blue() << 8;
+ exact_def.flags = DoRed | DoGreen | DoBlue;
+ if(!XAllocColor((Display*) m_window->GetXDisplay(),
+ (Colormap) wxTheApp->GetMainColormap(m_window->GetXDisplay()),
+ &exact_def)) {
+ wxDebugMsg("wxGLCanvas: cannot allocate color\n");
+ return;
+ }
+ pix = the_colour->m_pixel = exact_def.pixel;
+ }
+ glIndexi(pix);
+ }
+ }
+}
+
+void wxGLContext::SetupPixelFormat()
+{
+}
+
+void wxGLContext::SetupPalette( const wxPalette& WXUNUSED(palette) )
+{
+}
+
+wxPalette wxGLContext::CreateDefaultPalette()
+{
+ return wxNullPalette;
+}
+
+
+
+
/*
* GLCanvas implementation
*/
IMPLEMENT_CLASS(wxGLCanvas, wxScrolledWindow)
-wxGLCanvas::wxGLCanvas(wxWindow *parent,
- wxWindowID id,
- const wxPoint& pos,
- const wxSize& size,
- long style,
- const wxString& name,
- int *attrib_list, const wxPalette& palette)
- : wxScrolledWindow(parent, id, pos, size, style, name)
+BEGIN_EVENT_TABLE(wxGLCanvas, wxScrolledWindow)
+// 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 )
+: wxScrolledWindow(parent, id, pos, size, style, name)
+{
+ Create( parent, NULL, 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 )
+: wxScrolledWindow(parent, id, pos, size, style, name)
+{
+ Create( parent, shared, NULL, 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 )
+: wxScrolledWindow(parent, id, pos, size, style, name)
+{
+ Create( parent, NULL, shared, id, pos, size, style, name, attribList, palette );
+}
+
+
+/*
+bool wxGLCanvas::Create(wxWindow *parent,
+ const wxGLContext *shared, const wxGLCanvas *shared_context_of,
+ wxWindowID id = -1, const wxPoint& pos,
+ const wxSize& size, long style,
+ const wxString& name, int *attribList, const wxPalette& palette):
+ wxScrolledWindow(parent, id, pos, size, style, name)
+*/
+
+bool wxGLCanvas::Create( wxWindow *parent,
+ const wxGLContext *shared,
+ const wxGLCanvas *shared_context_of,
+ wxWindowID id,
+ const wxPoint& pos, const wxSize& size,
+ long style, const wxString& name,
+ int *attribList,
+ const wxPalette& palette)
{
XVisualInfo *vi, vi_templ;
XWindowAttributes xwa;
int val, n;
+ m_sharedContext = (wxGLContext*)shared; // const_cast
+ m_sharedContextOf = (wxGLCanvas*)shared_context_of; // const_cast
+ m_glContext = (wxGLContext*) NULL;
+
Display* display = (Display*) GetXDisplay();
- glx_cx = 0;
// Check for the presence of the GLX extension
if(!glXQueryExtension(display, NULL, NULL)) {
- wxDebugMsg("wxGLCanvas: GLX extension is missing\n");
- return;
+ wxDebugMsg("wxGLCanvas: GLX extension is missing\n");
+ return false;
}
- if(attrib_list) {
- // Get an appropriate visual
- vi = glXChooseVisual(display, DefaultScreen(display), attrib_list);
- if(!vi) return;
+ if(attribList) {
+ int data[512], arg=0, p=0;
+
+ while( (attribList[arg]!=0) && (p<512) )
+ {
+ switch( attribList[arg++] )
+ {
+ case WX_GL_RGBA: data[p++] = GLX_RGBA; break;
+ case WX_GL_BUFFER_SIZE:
+ data[p++]=GLX_BUFFER_SIZE; data[p++]=attribList[arg++]; break;
+ case WX_GL_LEVEL:
+ data[p++]=GLX_LEVEL; data[p++]=attribList[arg++]; break;
+ case WX_GL_DOUBLEBUFFER: data[p++] = GLX_DOUBLEBUFFER; break;
+ case WX_GL_STEREO: data[p++] = GLX_STEREO; break;
+ case WX_GL_AUX_BUFFERS:
+ data[p++]=GLX_AUX_BUFFERS; data[p++]=attribList[arg++]; break;
+ case WX_GL_MIN_RED:
+ data[p++]=GLX_RED_SIZE; data[p++]=attribList[arg++]; break;
+ case WX_GL_MIN_GREEN:
+ data[p++]=GLX_GREEN_SIZE; data[p++]=attribList[arg++]; break;
+ case WX_GL_MIN_BLUE:
+ data[p++]=GLX_BLUE_SIZE; data[p++]=attribList[arg++]; break;
+ case WX_GL_MIN_ALPHA:
+ data[p++]=GLX_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
+ case WX_GL_DEPTH_SIZE:
+ data[p++]=GLX_DEPTH_SIZE; data[p++]=attribList[arg++]; break;
+ case WX_GL_STENCIL_SIZE:
+ data[p++]=GLX_STENCIL_SIZE; data[p++]=attribList[arg++]; break;
+ case WX_GL_MIN_ACCUM_RED:
+ data[p++]=GLX_ACCUM_RED_SIZE; data[p++]=attribList[arg++]; break;
+ case WX_GL_MIN_ACCUM_GREEN:
+ data[p++]=GLX_ACCUM_GREEN_SIZE; data[p++]=attribList[arg++]; break;
+ case WX_GL_MIN_ACCUM_BLUE:
+ data[p++]=GLX_ACCUM_BLUE_SIZE; data[p++]=attribList[arg++]; break;
+ case WX_GL_MIN_ACCUM_ALPHA:
+ data[p++]=GLX_ACCUM_ALPHA_SIZE; data[p++]=attribList[arg++]; break;
+ default:
+ break;
+ }
+ }
+ data[p] = 0;
- // Here we should make sure that vi is the same visual as the
- // one used by the xwindow drawable in wxCanvas. However,
- // there is currently no mechanism for this in wx_canvs.cc.
+ attribList = (int*) data;
+ // Get an appropriate visual
+ vi = glXChooseVisual(display, DefaultScreen(display), attribList);
+ if(!vi) return false;
+
+ // Here we should make sure that vi is the same visual as the
+ // one used by the xwindow drawable in wxCanvas. However,
+ // there is currently no mechanism for this in wx_canvs.cc.
} else {
- // By default, we use the visual of xwindow
- XGetWindowAttributes(display, (Window) GetXWindow(), &xwa);
- vi_templ.visualid = XVisualIDFromVisual(xwa.visual);
- vi = XGetVisualInfo(display, VisualIDMask, &vi_templ, &n);
- if(!vi) return;
- glXGetConfig(display, vi, GLX_USE_GL, &val);
- if(!val) return;
- // Basically, this is it. It should be possible to use vi
- // in glXCreateContext() below. But this fails with Mesa.
- // I notified the Mesa author about it; there may be a fix.
+ // By default, we use the visual of xwindow
+ // NI: is this really senseful ? opengl in e.g. color index mode ?
+ XGetWindowAttributes(display, (Window) GetXWindow(), &xwa);
+ vi_templ.visualid = XVisualIDFromVisual(xwa.visual);
+ vi = XGetVisualInfo(display, VisualIDMask, &vi_templ, &n);
+ if(!vi) return false;
+ glXGetConfig(display, vi, GLX_USE_GL, &val);
+ if(!val) return false;
+ // Basically, this is it. It should be possible to use vi
+ // in glXCreateContext() below. But this fails with Mesa.
+ // I notified the Mesa author about it; there may be a fix.
#ifdef OLD_MESA
- // Construct an attribute list matching the visual
- int a_list[32];
- n = 0;
- if(vi->c_class==TrueColor || vi->c_class==DirectColor) { // RGBA visual
- a_list[n++] = GLX_RGBA;
- a_list[n++] = GLX_RED_SIZE;
- a_list[n++] = bitcount(vi->red_mask);
- a_list[n++] = GLX_GREEN_SIZE;
- a_list[n++] = bitcount(vi->green_mask);
- a_list[n++] = GLX_BLUE_SIZE;
- a_list[n++] = bitcount(vi->blue_mask);
- glXGetConfig(display, vi, GLX_ALPHA_SIZE, &val);
- a_list[n++] = GLX_ALPHA_SIZE;
- a_list[n++] = val;
- } else { // Color index visual
- glXGetConfig(display, vi, GLX_BUFFER_SIZE, &val);
- a_list[n++] = GLX_BUFFER_SIZE;
- a_list[n++] = val;
- }
- a_list[n] = None;
- XFree(vi);
- vi = glXChooseVisual(display, DefaultScreen(display), a_list);
- if(!vi) return;
+ // Construct an attribute list matching the visual
+ int a_list[32];
+ n = 0;
+ if(vi->c_class==TrueColor || vi->c_class==DirectColor) { // RGBA visual
+ a_list[n++] = GLX_RGBA;
+ a_list[n++] = GLX_RED_SIZE;
+ a_list[n++] = bitcount(vi->red_mask);
+ a_list[n++] = GLX_GREEN_SIZE;
+ a_list[n++] = bitcount(vi->green_mask);
+ a_list[n++] = GLX_BLUE_SIZE;
+ a_list[n++] = bitcount(vi->blue_mask);
+ glXGetConfig(display, vi, GLX_ALPHA_SIZE, &val);
+ a_list[n++] = GLX_ALPHA_SIZE;
+ a_list[n++] = val;
+ } else { // Color index visual
+ glXGetConfig(display, vi, GLX_BUFFER_SIZE, &val);
+ a_list[n++] = GLX_BUFFER_SIZE;
+ a_list[n++] = val;
+ }
+ a_list[n] = None;
+ // XFree(vi);
+ vi = glXChooseVisual(display, DefaultScreen(display), a_list);
+ if(!vi) return false;
#endif /* OLD_MESA */
}
+ m_vi = vi; // safe for later use
+
+ wxCHECK_MSG( m_vi, FALSE, "required visual couldn't be found" );
+
// Create the GLX context and make it current
- glx_cx = glXCreateContext(display, vi, 0, GL_TRUE);
+
+ wxGLContext *share= m_sharedContext;
+ if (share==NULL && m_sharedContextOf)
+ share = m_sharedContextOf->GetContext();
+
+ m_glContext = new wxGLContext( TRUE, this, wxNullPalette, share );
+
#ifndef OLD_MESA
- XFree(vi);
+ // XFree(vi);
#endif
SetCurrent();
+
+ return true;
}
wxGLCanvas::~wxGLCanvas(void)
{
- Display* display = (Display*) GetXDisplay();
- if(glx_cx) glXDestroyContext(display, glx_cx);
+ XVisualInfo *vi = (XVisualInfo *) m_vi;
+
+ if (vi) XFree( vi );
+ if (m_glContext) delete m_glContext;
+
+ // Display* display = (Display*) GetXDisplay();
+ // if(glx_cx) glXDestroyContext(display, glx_cx);
}
void wxGLCanvas::SwapBuffers()
{
- Display* display = (Display*) GetXDisplay();
- if(glx_cx) glXSwapBuffers(display, (Window) GetXWindow());
+ if( m_glContext ) m_glContext->SwapBuffers();
+
+ // Display* display = (Display*) GetXDisplay();
+ // if(glx_cx) glXSwapBuffers(display, (Window) GetXWindow());
}
void wxGLCanvas::SetCurrent()
{
- Display* display = (Display*) GetXDisplay();
- if(glx_cx) glXMakeCurrent(display, (Window) GetXWindow(), glx_cx);
+ if( m_glContext ) m_glContext->SetCurrent();
+
+ // Display* display = (Display*) GetXDisplay();
+ // if(glx_cx) glXMakeCurrent(display, (Window) GetXWindow(), glx_cx);
}
void wxGLCanvas::SetColour(const char *col)
{
- wxColour *the_colour = wxTheColourDatabase->FindColour(col);
- if(the_colour) {
- GLboolean b;
- glGetBooleanv(GL_RGBA_MODE, &b);
- if(b) {
- glColor3ub(the_colour->Red(),
- the_colour->Green(),
- the_colour->Blue());
- } else {
- GLint pix = (GLint)the_colour->m_pixel;
- if(pix == -1) {
- XColor exact_def;
- exact_def.red = (unsigned short)the_colour->Red() << 8;
- exact_def.green = (unsigned short)the_colour->Green() << 8;
- exact_def.blue = (unsigned short)the_colour->Blue() << 8;
- exact_def.flags = DoRed | DoGreen | DoBlue;
- if(!XAllocColor((Display*) GetXDisplay(), (Colormap) wxTheApp->GetMainColormap(GetXDisplay()), &exact_def)) {
- wxDebugMsg("wxGLCanvas: cannot allocate color\n");
- return;
- }
- pix = the_colour->m_pixel = exact_def.pixel;
- }
- glIndexi(pix);
- }
- }
+ if( m_glContext ) m_glContext->SetColour(col);
}
#endif
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