/////////////////////////////////////////////////////////////////////////////
-// Name: glcanvas.cpp
+// Name: src/x11/glcanvas.cpp
// Purpose: wxGLCanvas, for using OpenGL with wxWidgets
// Uses the GLX extension.
// Author: Julian Smart and Wolfram Gloger
// Created: 1995, 1999
// RCS-ID: $Id$
// Copyright: (c) Julian Smart, Wolfram Gloger
-// Licence: wxWidgets licence
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "glcanvas.h"
-#endif
+// for compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
-#include "wx/setup.h"
+#if defined(__BORLANDC__)
+#pragma hdrstop
+#endif
#if wxUSE_GLCANVAS
static int bitcount( unsigned long n )
{
int bits;
- for (bits=0; n>0;) {
- if(n & 1) bits++;
- n = n >> 1;
+ for (bits=0; n>0;)
+ {
+ if(n & 1) bits++;
+ n = n >> 1;
}
return bits;
}
IMPLEMENT_CLASS(wxGLContext,wxObject)
-wxGLContext::wxGLContext( bool WXUNUSED(isRGB), wxWindow *win,
+wxGLContext::wxGLContext( bool WXUNUSED(isRGB), wxWindow *win,
const wxPalette& WXUNUSED(palette) )
{
m_window = win;
wxGLCanvas *gc = (wxGLCanvas*) win;
XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
-
+
wxCHECK_RET( vi, wxT("invalid visual for OpenGL") );
-
+
m_glContext = glXCreateContext( (Display *)wxGetDisplay(), vi,
None, GL_TRUE);
-
+
wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGL context") );
}
-wxGLContext::wxGLContext(
- bool WXUNUSED(isRGB), wxWindow *win,
+wxGLContext::wxGLContext(
+ bool WXUNUSED(isRGB), wxWindow *win,
const wxPalette& WXUNUSED(palette),
const wxGLContext *other /* for sharing display lists */
)
wxGLCanvas *gc = (wxGLCanvas*) win;
XVisualInfo *vi = (XVisualInfo *) gc->m_vi;
-
+
wxCHECK_RET( vi, wxT("invalid visual for OpenGL") );
-
+
if( other != 0 )
- m_glContext = glXCreateContext( (Display *)wxGetDisplay(), vi,
+ m_glContext = glXCreateContext( (Display *)wxGetDisplay(), vi,
other->m_glContext, GL_TRUE );
else
m_glContext = glXCreateContext( (Display *)wxGetDisplay(), vi,
None, GL_TRUE );
-
+
wxCHECK_RET( m_glContext, wxT("Couldn't create OpenGL context") );
}
wxGLContext::~wxGLContext()
{
if (!m_glContext) return;
-
+
if (m_glContext == glXGetCurrentContext())
{
glXMakeCurrent( (Display*) wxGetDisplay(), None, NULL);
}
-
+
glXDestroyContext( (Display*) wxGetDisplay(), m_glContext );
}
void wxGLContext::SetCurrent()
{
- if (m_glContext)
- {
+ if (m_glContext)
+ {
Display* display = (Display*) wxGetDisplay();
- glXMakeCurrent(display, (Window) wxGetClientAreaWindow(m_window),
- m_glContext );;
+ glXMakeCurrent(display, (Window) wxGetClientAreaWindow(m_window),
+ m_glContext );
}
}
wxGLCanvas::wxGLCanvas( wxWindow *parent, wxWindowID id,
- const wxPoint& pos, const wxSize& size,
- long style, const wxString& name,
- int *attribList,
- const wxPalette& palette )
+ 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,
+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 )
+ 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,
+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 )
+ 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 wxSize& size, long style,
const wxString& name, int *attribList, const wxPalette& palette):
wxScrolledWindow(parent, id, pos, size, style, name)
*/
-bool wxGLCanvas::Create( wxWindow *parent,
+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)
+ const wxPoint& pos, const wxSize& size,
+ long style, const wxString& name,
+ int *attribList,
+ const wxPalette& palette)
{
XVisualInfo *vi, vi_templ;
XWindowAttributes xwa;
Display* display = (Display*) wxGetDisplay();
// Check for the presence of the GLX extension
- if(!glXQueryExtension(display, NULL, NULL)) {
- wxLogDebug(wxT("wxGLCanvas: GLX extension is missing\n"));
- return FALSE;
+ if(!glXQueryExtension(display, NULL, NULL))
+ {
+ wxLogDebug(wxT("wxGLCanvas: GLX extension is missing\n"));
+ return false;
}
if(attribList) {
int data[512], arg=0, p=0;
-
+
while( (attribList[arg]!=0) && (p<512) )
{
switch( attribList[arg++] )
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:
+ case WX_GL_DEPTH_SIZE:
data[p++]=GLX_DEPTH_SIZE; data[p++]=attribList[arg++]; break;
- case WX_GL_STENCIL_SIZE:
+ 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;
default:
break;
}
- }
- data[p] = 0;
+ }
+ data[p] = 0;
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
+ // By default, we use the visual of xwindow
// NI: is this really senseful ? opengl in e.g. color index mode ?
- XGetWindowAttributes(display, (Window)wxGetClientAreaWindow(this), &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.
+ XGetWindowAttributes(display, (Window)wxGetClientAreaWindow(this), &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 FALSE;
+ // 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, wxT("required visual couldn't be found") );
// Create the GLX context and make it current
wxGLContext *share= m_sharedContext;
- if (share==NULL && m_sharedContextOf)
+ if (share==NULL && m_sharedContextOf)
share = m_sharedContextOf->GetContext();
m_glContext = new wxGLContext( TRUE, this, wxNullPalette, share );
#endif
SetCurrent();
- return TRUE;
+ return true;
}
wxGLCanvas::~wxGLCanvas(void)
{
XVisualInfo *vi = (XVisualInfo *) m_vi;
-
+
if (vi) XFree( vi );
if (m_glContext) delete m_glContext;
#endif
// wxUSE_GLCANVAS
-
projects / wxWidgets.git / blobdiff