///////////////////////////////////////////////////////////////////////////////
-// Name: src/mac/carbon/glcanvas.cpp
+// Name: src/osx/carbon/glcanvas.cpp
// Purpose: wxGLCanvas, for using OpenGL with wxWidgets under Macintosh
// Author: Stefan Csomor
// Modified by:
#include "wx/osx/uma.h"
#include "wx/osx/private.h"
+#include <AGL/agl.h>
// ----------------------------------------------------------------------------
// helper functions
// ============================================================================
// ----------------------------------------------------------------------------
-// wxGLContext
+// low level implementation routines
// ----------------------------------------------------------------------------
-wxGLContext::wxGLContext(wxGLCanvas *win, const wxGLContext *other)
+WXGLContext WXGLCreateContext( WXGLPixelFormat pixelFormat, WXGLContext shareContext )
{
- m_aglContext = aglCreateContext(win->GetAGLPixelFormat(),
- other ? other->m_aglContext : NULL);
- if ( !m_aglContext )
+ WXGLContext context = aglCreateContext(pixelFormat, shareContext);
+ if ( !context )
wxLogAGLError("aglCreateContext");
+ return context ;
}
-wxGLContext::~wxGLContext()
+void WXGLDestroyContext( WXGLContext context )
{
- if ( m_aglContext )
+ if ( context )
{
- // it's ok to pass the current context to this function
- if ( !aglDestroyContext(m_aglContext) )
+ if ( !aglDestroyContext(context) )
+ {
wxLogAGLError("aglDestroyContext");
+ }
}
}
-bool wxGLContext::SetCurrent(const wxGLCanvas& win) const
+WXGLContext WXGLGetCurrentContext()
{
- if ( !m_aglContext )
- return false;
-
- AGLDrawable drawable = (AGLDrawable)GetWindowPort(
- MAC_WXHWND(win.MacGetTopLevelWindowRef()));
- if ( !aglSetDrawable(m_aglContext, drawable) )
- {
- wxLogAGLError("aglSetDrawable");
- return false;
- }
+ return aglGetCurrentContext();
+}
- if ( !aglSetCurrentContext(m_aglContext) )
+bool WXGLSetCurrentContext(WXGLContext context)
+{
+ if ( !aglSetCurrentContext(context) )
{
wxLogAGLError("aglSetCurrentContext");
return false;
}
- wx_const_cast(wxGLCanvas&, win).SetViewport();
return true;
}
-// ----------------------------------------------------------------------------
-// wxGLCanvas
-// ----------------------------------------------------------------------------
-
-IMPLEMENT_CLASS(wxGLCanvas, wxWindow)
-
-BEGIN_EVENT_TABLE(wxGLCanvas, wxWindow)
- EVT_SIZE(wxGLCanvas::OnSize)
-END_EVENT_TABLE()
-
-wxGLCanvas::wxGLCanvas(wxWindow *parent,
- wxWindowID id,
- const int *attribList,
- const wxPoint& pos,
- const wxSize& size,
- long style,
- const wxString& name,
- const wxPalette& palette)
-{
- Create(parent, id, pos, size, style, name, attribList, palette);
-}
-
-#if WXWIN_COMPATIBILITY_2_8
-
-wxGLCanvas::wxGLCanvas(wxWindow *parent,
- wxWindowID id,
- const wxPoint& pos,
- const wxSize& size,
- long style,
- const wxString& name,
- const int *attribList,
- const wxPalette& palette)
-{
- if ( Create(parent, id, pos, size, style, name, attribList, palette) )
- m_glContext = new wxGLContext(this);
-}
-
-wxGLCanvas::wxGLCanvas(wxWindow *parent,
- const wxGLContext *shared,
- wxWindowID id,
- const wxPoint& pos,
- const wxSize& size,
- long style,
- const wxString& name,
- const int *attribList,
- const wxPalette& palette)
-{
- if ( Create(parent, id, pos, size, style, name, attribList, palette) )
- m_glContext = new wxGLContext(this, shared);
-}
-
-wxGLCanvas::wxGLCanvas(wxWindow *parent,
- const wxGLCanvas *shared,
- wxWindowID id,
- const wxPoint& pos,
- const wxSize& size,
- long style,
- const wxString& name,
- const int *attribList,
- const wxPalette& palette)
-{
- if ( Create(parent, id, pos, size, style, name, attribList, palette) )
- m_glContext = new wxGLContext(this, shared ? shared->m_glContext : NULL);
-}
-
-#endif // WXWIN_COMPATIBILITY_2_8
-
-/* static */
-bool wxGLCanvasBase::IsExtensionSupported(const char *extension)
-{
- // we need a valid context to query for extensions.
- const GLint defaultAttribs[] = { AGL_RGBA, AGL_DOUBLEBUFFER, AGL_NONE };
- AGLPixelFormat fmt = aglChoosePixelFormat(NULL, 0, defaultAttribs);
- AGLContext ctx = aglCreateContext(fmt, NULL);
- if ( !ctx )
- return false;
-
- wxString extensions = wxString::FromAscii(glGetString(GL_EXTENSIONS));
-
- aglDestroyPixelFormat(fmt);
- aglDestroyContext(ctx);
-
- return IsExtensionInList(extensions, extension);
-}
-
-/* static */
-bool wxGLCanvas::IsAGLMultiSampleAvailable()
+void WXGLDestroyPixelFormat( WXGLPixelFormat pixelFormat )
{
- static int s_isMultiSampleAvailable = -1;
- if ( s_isMultiSampleAvailable == -1 )
- s_isMultiSampleAvailable = IsExtensionSupported("GL_ARB_multisample");
-
- return s_isMultiSampleAvailable != 0;
+ if ( pixelFormat )
+ {
+ aglDestroyPixelFormat(pixelFormat);
+ }
}
-static AGLPixelFormat ChoosePixelFormat(const int *attribList)
+WXGLPixelFormat WXGLChoosePixelFormat(const int *attribList)
{
GLint data[512];
const GLint defaultAttribs[] =
if ( !attribList[arg++] )
break;
- return false;
+ return NULL;
}
data[p++] = AGL_SAMPLE_BUFFERS_ARB;
if ( !attribList[arg++] )
break;
- return false;
+ return NULL;
}
data[p++] = AGL_SAMPLES_ARB;
return aglChoosePixelFormat(NULL, 0, attribs);
}
+// ----------------------------------------------------------------------------
+// wxGLContext
+// ----------------------------------------------------------------------------
+
+bool wxGLContext::SetCurrent(const wxGLCanvas& win) const
+{
+ if ( !m_glContext )
+ return false;
+
+ GLint bufnummer = win.GetAglBufferName();
+ aglSetInteger(m_glContext, AGL_BUFFER_NAME, &bufnummer);
+ //win.SetLastContext(m_glContext);
+
+ const_cast<wxGLCanvas&>(win).SetViewport();
+
+
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
+ if ( UMAGetSystemVersion() >= 0x1050 )
+ {
+ aglSetWindowRef(m_glContext, win.MacGetTopLevelWindowRef());
+ }
+ else
+#endif
+ {
+ AGLDrawable drawable = (AGLDrawable)GetWindowPort(
+ MAC_WXHWND(win.MacGetTopLevelWindowRef()));
+
+ if ( !aglSetDrawable(m_glContext, drawable) )
+ {
+ wxLogAGLError("aglSetDrawable");
+ return false;
+ }
+ }
+
+ return WXGLSetCurrentContext(m_glContext);
+}
+
+// ----------------------------------------------------------------------------
+// wxGLCanvas
+// ----------------------------------------------------------------------------
+
+/*
+
+sharing contexts under AGL is not straightforward, to quote from
+
+http://lists.apple.com/archives/mac-opengl/2003/Jan/msg00402.html :
+
+In Carbon OpenGL (AGL) you would use call aglSetInteger to setup a
+buffer name and attached each context to that same name. From AGL
+you can do:
+
+GLint id = 1;
+
+ctx1 = aglCreateContext...
+aglSetInteger(ctx1, AGL_BUFFER_NAME, &id); // create name
+aglAttachDrawable (ctx1,...); // create surface with associated with
+name (first time)
+ctx2 = aglCreateContext...
+aglSetInteger(ctx2, AGL_BUFFER_NAME, &id); // uses previously created name
+aglAttachDrawable (ctx2, ...); // uses existing surface with existing name
+
+AGL Docs say:
+AGL_BUFFER_NAME
+params contains one value: a non-negative integer name of the surface to be
+associated to be with the current context. If this value is non-zero, and a
+surface of this name is not associated to this drawable, a new surface with
+this name is created and associated with the context when
+aglSetDrawable is called subsequently. If this is a previously allocated
+buffer name within the namespace of the current window (e.g., drawable),
+that previously allocated surface is associated with the context (e.g., no
+new surface is created) and the subsequent call to aglSetDrawable will
+attach that surface. This allows multiple contexts to be attached to a single
+surface. Using the default buffer name zero, returns to one surface per
+context behaviour.
+*/
+
+/*
+so what I'm doing is to have a dummy aglContext attached to a wxGLCanvas,
+assign it a buffer number
+*/
+
+
bool wxGLCanvas::Create(wxWindow *parent,
wxWindowID id,
const wxPoint& pos,
m_needsUpdate = false;
m_macCanvasIsShown = false;
- m_aglFormat = ChoosePixelFormat(attribList);
- if ( !m_aglFormat )
+ m_glFormat = WXGLChoosePixelFormat(attribList);
+ if ( !m_glFormat )
return false;
if ( !wxWindow::Create(parent, id, pos, size, style, name) )
return false;
+ m_dummyContext = WXGLCreateContext(m_glFormat, NULL);
+
+ static GLint gCurrentBufferName = 1;
+ m_bufferName = gCurrentBufferName++;
+ aglSetInteger (m_dummyContext, AGL_BUFFER_NAME, &m_bufferName);
+
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_X_VERSION_10_5
+ if ( UMAGetSystemVersion() >= 0x1050 )
+ {
+ aglSetWindowRef(m_dummyContext, MacGetTopLevelWindowRef());
+ }
+ else
+#endif
+ {
+ AGLDrawable drawable = (AGLDrawable)GetWindowPort(MAC_WXHWND(MacGetTopLevelWindowRef()));
+ aglSetDrawable(m_dummyContext, drawable);
+ }
+
m_macCanvasIsShown = true;
return true;
wxGLCanvas::~wxGLCanvas()
{
- if ( m_aglFormat )
- aglDestroyPixelFormat(m_aglFormat);
-}
-
-/* static */
-bool wxGLCanvasBase::IsDisplaySupported(const int *attribList)
-{
- AGLPixelFormat aglFormat = ChoosePixelFormat(attribList);
+ if ( m_glFormat )
+ WXGLDestroyPixelFormat(m_glFormat);
- if ( !aglFormat )
- return false;
-
- aglDestroyPixelFormat(aglFormat);
-
- return true;
+ if ( m_dummyContext )
+ WXGLDestroyContext(m_dummyContext);
}
bool wxGLCanvas::SwapBuffers()
{
- AGLContext context = aglGetCurrentContext();
- wxCHECK_MSG(context, false, _T("should have current context"));
+ WXGLContext context = WXGLGetCurrentContext();
+ wxCHECK_MSG(context, false, wxT("should have current context"));
aglSwapBuffers(context);
return true;
m_needsUpdate = false;
- AGLContext context = aglGetCurrentContext();
- if ( !context )
- return;
+// AGLContext context = aglGetCurrentContext();
+// if ( !context )
+// return;
// viewport is initially set to entire port, adjust it to just this window
int x = 0,
Rect bounds;
GetWindowPortBounds(MAC_WXHWND(MacGetTopLevelWindowRef()) , &bounds);
-#if 0
- // TODO in case we adopt point vs pixel coordinates, this will make the conversion
- HIRect hiRect = CGRectMake( x, y, width, height );
- HIRectConvert( &hiRect, kHICoordSpace72DPIGlobal, NULL, kHICoordSpaceScreenPixel, NULL);
- HIRect hiBounds = CGRectMake( 0, 0, bounds.right - bounds.left , bounds.bottom - bounds.top );
- HIRectConvert( &hiBounds, kHICoordSpace72DPIGlobal, NULL, kHICoordSpaceScreenPixel, NULL);
- GLint parms[4];
- parms[0] = hiRect.origin.x;
- parms[1] = hiBounds.size.height - (hiRect.origin.y + hiRect.size.height);
- parms[2] = hiRect.size.width;
- parms[3] = hiRect.size.height;
-#else
GLint parms[4];
parms[0] = x;
parms[1] = bounds.bottom - bounds.top - ( y + height );
parms[2] = width;
parms[3] = height;
-#endif
// move the buffer rect out of sight if we're hidden
if ( !m_macCanvasIsShown )
parms[0] += 20000;
- if ( !aglSetInteger(context, AGL_BUFFER_RECT, parms) )
+ if ( !aglSetInteger(m_dummyContext, AGL_BUFFER_RECT, parms) )
wxLogAGLError("aglSetInteger(AGL_BUFFER_RECT)");
- if ( !aglEnable(context, AGL_BUFFER_RECT) )
+ if ( !aglEnable(m_dummyContext, AGL_BUFFER_RECT) )
wxLogAGLError("aglEnable(AGL_BUFFER_RECT)");
- if ( !aglUpdateContext(context) )
+ if ( !aglUpdateContext(m_dummyContext) )
wxLogAGLError("aglUpdateContext");
}
void wxGLCanvas::MacSuperChangedPosition()
{
MacUpdateView();
+ SetViewport();
wxWindow::MacSuperChangedPosition();
}
wxWindowMac::MacVisibilityChanged();
}
-// ----------------------------------------------------------------------------
-// wxGLApp
-// ----------------------------------------------------------------------------
-
-bool wxGLApp::InitGLVisual(const int *attribList)
-{
- AGLPixelFormat fmt = ChoosePixelFormat(attribList);
- if ( !fmt )
- return false;
-
- aglDestroyPixelFormat(fmt);
- return true;
-}
-
#endif // wxUSE_GLCANVAS
projects / wxWidgets.git / blobdiff