From b8167e73f6a4957e0f836b47667e46849342089e Mon Sep 17 00:00:00 2001
From: Sylvain Bougnoux <bougnoux@imra-europe.com>
Date: Wed, 19 Jan 2000 18:41:38 +0000
Subject: [PATCH] In order to make shared wxGLContext work,\nadd new wxGLCanvas
 ctor passing a wxGLCanvas\n instead of a wxGLContext, to share context with.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5524 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 utils/glcanvas/gtk/glcanvas.cpp | 26 ++++++++++++++++++++------
 utils/glcanvas/gtk/glcanvas.h   | 27 ++++++++++++++++++---------
 2 files changed, 38 insertions(+), 15 deletions(-)

diff --git a/utils/glcanvas/gtk/glcanvas.cpp b/utils/glcanvas/gtk/glcanvas.cpp
index 71d8228192..68552f1b16 100644
--- a/utils/glcanvas/gtk/glcanvas.cpp
+++ b/utils/glcanvas/gtk/glcanvas.cpp
@@ -149,7 +149,10 @@ wxPalette wxGLContext::CreateDefaultPalette()
 static gint
 gtk_glwindow_realized_callback( GtkWidget * WXUNUSED(widget), wxGLCanvas *win )
 {
-    win->m_glContext = new wxGLContext( TRUE, win, wxNullPalette, win->m_sharedContext );
+    wxGLContext *share= win->m_sharedContext;
+    if (share==NULL && win->m_sharedContextOf) share=win->m_sharedContextOf->GetContext();
+
+    win->m_glContext = new wxGLContext( TRUE, win, wxNullPalette, share );
 
     return FALSE;
 }
@@ -242,7 +245,7 @@ wxGLCanvas::wxGLCanvas( wxWindow *parent, wxWindowID id,
                         int *attribList, 
 			const wxPalette& palette )
 {
-    Create( parent, NULL, id, pos, size, style, name, attribList, palette );
+    Create( parent, NULL, NULL, id, pos, size, style, name, attribList, palette );
 }
 
 wxGLCanvas::wxGLCanvas( wxWindow *parent, 
@@ -253,11 +256,23 @@ wxGLCanvas::wxGLCanvas( wxWindow *parent,
                         int *attribList, 
 			const wxPalette& palette )
 {			
-    Create( parent, shared, id, pos, size, style, name, attribList, palette );
+    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 )
+{			
+    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,
                          const wxPoint& pos, const wxSize& size, 
 			 long style, const wxString& name,
@@ -265,6 +280,7 @@ bool wxGLCanvas::Create( wxWindow *parent,
 			 const wxPalette& palette)
 {
     m_sharedContext = (wxGLContext*)shared;  // const_cast
+    m_sharedContextOf = (wxGLCanvas*)shared_context_of;  // const_cast
     m_glContext = (wxGLContext*) NULL;
     
     m_exposed = FALSE;
@@ -356,9 +372,7 @@ wxGLCanvas::~wxGLCanvas()
 {
     XVisualInfo *vi = (XVisualInfo *) m_vi;
     
-    if (vi)
-        XFree( vi );
-    
+    if (vi) XFree( vi );
     if (m_glContext) delete m_glContext;
 }
 
diff --git a/utils/glcanvas/gtk/glcanvas.h b/utils/glcanvas/gtk/glcanvas.h
index 3b7cb08cbd..b67e1ba7c8 100644
--- a/utils/glcanvas/gtk/glcanvas.h
+++ b/utils/glcanvas/gtk/glcanvas.h
@@ -94,6 +94,13 @@ private:
 class wxGLCanvas: public wxScrolledWindow
 {
 public:
+   inline wxGLCanvas() {
+      m_glContext = (wxGLContext*) NULL;
+      m_sharedContext = (wxGLContext*) NULL;
+      m_glWidget = (GtkWidget*) NULL;
+      m_vi = (void*) NULL;
+      m_exposed = FALSE;
+   }
    wxGLCanvas( wxWindow *parent, wxWindowID id = -1, 
         const wxPoint& pos = wxDefaultPosition,
         const wxSize& size = wxDefaultSize, 
@@ -107,16 +114,17 @@ public:
         long style = 0, const wxString& name = "GLCanvas", 
         int *attribList = (int*) NULL, 
         const wxPalette& palette = wxNullPalette );
+   wxGLCanvas( wxWindow *parent, const wxGLCanvas *shared = (wxGLCanvas *)NULL,
+        wxWindowID id = -1, 
+        const wxPoint& pos = wxDefaultPosition,
+        const wxSize& size = wxDefaultSize, 
+        long style = 0, const wxString& name = "GLCanvas", 
+        int *attribList = (int*) NULL, 
+        const wxPalette& palette = wxNullPalette );
 
-   inline wxGLCanvas() {
-      m_glContext = (wxGLContext*) NULL;
-      m_sharedContext = (wxGLContext*) NULL;
-      m_glWidget = (GtkWidget*) NULL;
-      m_vi = (void*) NULL;
-      m_exposed = FALSE;
-   }
-
-   bool Create( wxWindow *parent, const wxGLContext *shared = (wxGLContext *)NULL,
+   bool Create( wxWindow *parent, 
+	const wxGLContext *shared = (wxGLContext*)NULL,
+	const wxGLCanvas *shared_context_of = (wxGLCanvas*)NULL,
         wxWindowID id = -1, 
         const wxPoint& pos = wxDefaultPosition,
         const wxSize& size = wxDefaultSize, 
@@ -140,6 +148,7 @@ public:
   
     wxGLContext      *m_glContext,
                      *m_sharedContext;
+    wxGLCanvas       *m_sharedContextOf;
     void             *m_vi;
     GtkWidget        *m_glWidget;
     bool              m_exposed;
-- 
2.47.2