static void
gdk_gl_config_init_attrib (GdkGLConfig *glconfig)
{
PIXELFORMATDESCRIPTOR *pfd;
pfd = GDK_GL_CONFIG_PFD (glconfig);
/* RGBA mode? */
glconfig->is_rgba = (pfd->iPixelType == PFD_TYPE_RGBA) ? TRUE : FALSE;
/* Layer plane. */
if (pfd->bReserved != 0)
{
glconfig->layer_plane = pfd->bReserved & 0x0f;
if (glconfig->layer_plane == 0)
glconfig->layer_plane = -1 * ((pfd->bReserved & 0xf0) >> 4);
}
/*
* attrib_list is currently unused. This must be set to NULL or empty
* (first attribute of None). See GLX 1.3 spec.
*/
GdkGLWindow *
_gdk_win32_gl_window_impl_new (GdkGLWindow *glwindow,
GdkGLConfig *glconfig,
GdkWindow *window,
const int *attrib_list)
{
GdkGLWindowImplWin32 *win32_impl;
HWND hwnd;
DWORD wndclass_style;
gboolean need_release_dc;
HDC hdc = NULL;
PIXELFORMATDESCRIPTOR pfd;
int pixel_format;
GDK_GL_NOTE_FUNC ();
g_return_val_if_fail (GDK_IS_WIN32_GL_WINDOW (glwindow), NULL);
g_return_val_if_fail (GDK_IS_WIN32_GL_CONFIG (glconfig), NULL);
g_return_val_if_fail (GDK_IS_WINDOW (window), NULL);
hwnd = (HWND) gdk_win32_window_get_handle (window);
/* Private DC? */
wndclass_style = GetClassLong (hwnd, GCL_STYLE);
if (wndclass_style & CS_OWNDC)
{
GDK_GL_NOTE (MISC, g_message (" -- Private DC"));
need_release_dc = FALSE;
}
else
{
GDK_GL_NOTE (MISC, g_message (" -- Common DC"));
need_release_dc = TRUE;
}
/* Get DC. */
hdc = GetDC (hwnd);
if (hdc == NULL)
{
g_warning ("cannot get DC");
goto FAIL;
}
/*
* Choose pixel format.
*/
pfd = *(GDK_GL_CONFIG_PFD (glconfig));
/* Draw to window */
pfd.dwFlags &= ~PFD_DRAW_TO_BITMAP;
pfd.dwFlags |= PFD_DRAW_TO_WINDOW;
/* Request pfd.cColorBits should exclude alpha bitplanes. */
pfd.cColorBits = pfd.cRedBits + pfd.cGreenBits + pfd.cBlueBits;
GDK_GL_NOTE_FUNC_IMPL ("ChoosePixelFormat");
pixel_format = ChoosePixelFormat (hdc, &pfd);
if (pixel_format == 0)
{
g_warning ("cannot choose pixel format");
goto FAIL;
}
/*
* Set pixel format.
*/
GDK_GL_NOTE_FUNC_IMPL ("SetPixelFormat");
if (!SetPixelFormat (hdc, pixel_format, &pfd))
{
g_warning ("cannot set pixel format");
goto FAIL;
}
DescribePixelFormat (hdc, pixel_format, sizeof (pfd), &pfd);
GDK_GL_NOTE (MISC, g_message (" -- impl->pixel_format = 0x%x", pixel_format));
GDK_GL_NOTE (MISC, _gdk_win32_gl_print_pfd (&pfd));
if (need_release_dc)
{
/* Release DC. */
ReleaseDC (hwnd, hdc);
hdc = NULL;
}
/*
* Instantiate the GdkGLWindowImplWin32 object.
*/
win32_impl = g_object_new (GDK_TYPE_GL_WINDOW_IMPL_WIN32, NULL);
win32_impl->hwnd = hwnd;
win32_impl->pfd = pfd;
win32_impl->pixel_format = pixel_format;
win32_impl->glconfig = glconfig;
g_object_ref (G_OBJECT (win32_impl->glconfig));
win32_impl->hdc = hdc;
win32_impl->need_release_dc = need_release_dc;
win32_impl->is_destroyed = FALSE;
glwindow->impl = GDK_GL_WINDOW_IMPL(win32_impl);
glwindow->window = window;
g_object_add_weak_pointer (G_OBJECT (glwindow->window),
(gpointer *) &(glwindow->window));
return glwindow;
FAIL:
/* Release DC. */
if (need_release_dc && hdc != NULL)
ReleaseDC (hwnd, hdc);
return NULL;
}
/*
* attrib_list is currently unused. This must be set to NULL or empty
* (first attribute of None). See GLX 1.3 spec.
*/
GdkGLPixmap *
gdk_gl_pixmap_new (GdkGLConfig *glconfig,
GdkPixmap *pixmap,
const int *attrib_list)
{
GdkGLPixmap *glpixmap;
GdkGLPixmapImplWin32 *impl;
gint width, height;
gint depth;
GdkPixmap *pixmap_gl = NULL;
HBITMAP hbitmap_gl;
HDC hdc_gl = NULL;
PIXELFORMATDESCRIPTOR pfd;
int pixel_format;
HBITMAP hbitmap_gdk;
HDC hdc_gdk = NULL;
GDK_GL_NOTE_FUNC ();
g_return_val_if_fail (GDK_IS_GL_CONFIG_IMPL_WIN32 (glconfig), NULL);
g_return_val_if_fail (GDK_IS_PIXMAP (pixmap), NULL);
/*
* Create offscreen rendering area.
*/
gdk_drawable_get_size (GDK_DRAWABLE (pixmap), &width, &height);
depth = gdk_drawable_get_depth (GDK_DRAWABLE (pixmap));
pixmap_gl = gdk_pixmap_new (NULL, width, height, depth);
if (pixmap_gl == NULL)
goto FAIL;
/*
* Source (OpenGL) DIB
*/
hbitmap_gl = (HBITMAP) gdk_win32_drawable_get_handle (GDK_DRAWABLE (pixmap_gl));
/* Create a memory DC. */
hdc_gl = CreateCompatibleDC (NULL);
if (hdc_gl == NULL)
{
g_warning ("cannot create a memory DC");
goto FAIL;
}
/* Select the bitmap. */
if (SelectObject (hdc_gl, hbitmap_gl) == NULL)
{
g_warning ("cannot select DIB");
goto FAIL;
}
/*
* Choose pixel format.
*/
pfd = *(GDK_GL_CONFIG_PFD (glconfig));
/* Draw to bitmap */
pfd.dwFlags &= ~PFD_DRAW_TO_WINDOW;
pfd.dwFlags |= PFD_DRAW_TO_BITMAP;
/* Request pfd.cColorBits should exclude alpha bitplanes. */
pfd.cColorBits = pfd.cRedBits + pfd.cGreenBits + pfd.cBlueBits;
GDK_GL_NOTE_FUNC_IMPL ("ChoosePixelFormat");
pixel_format = ChoosePixelFormat (hdc_gl, &pfd);
if (pixel_format == 0)
{
g_warning ("cannot choose pixel format");
goto FAIL;
}
/*
* Set pixel format.
*/
GDK_GL_NOTE_FUNC_IMPL ("SetPixelFormat");
if (!SetPixelFormat (hdc_gl, pixel_format, &pfd))
{
g_warning ("cannot set pixel format");
goto FAIL;
}
DescribePixelFormat (hdc_gl, pixel_format, sizeof (pfd), &pfd);
GDK_GL_NOTE (MISC, g_message (" -- impl->pixel_format = 0x%x", pixel_format));
GDK_GL_NOTE (MISC, _gdk_win32_gl_print_pfd (&pfd));
/*
* Destination (GDK) DIB
*/
hbitmap_gdk = (HBITMAP) gdk_win32_drawable_get_handle (GDK_DRAWABLE (pixmap));
/* Create a memory DC. */
hdc_gdk = CreateCompatibleDC (hdc_gl);
if (hdc_gdk == NULL)
{
g_warning ("cannot create a memory DC");
goto FAIL;
}
/*
* Instantiate the GdkGLPixmapImplWin32 object.
*/
glpixmap = g_object_new (GDK_TYPE_GL_PIXMAP_IMPL_WIN32, NULL);
impl = GDK_GL_PIXMAP_IMPL_WIN32 (glpixmap);
glpixmap->drawable = GDK_DRAWABLE (pixmap);
g_object_add_weak_pointer (G_OBJECT (glpixmap->drawable),
(gpointer *) &(glpixmap->drawable));
impl->pixmap_gl = pixmap_gl;
impl->width = width;
impl->height = height;
impl->pfd = pfd;
impl->pixel_format = pixel_format;
impl->glconfig = glconfig;
g_object_ref (G_OBJECT (impl->glconfig));
impl->hdc_gl = hdc_gl;
impl->hdc_gdk = hdc_gdk;
impl->hbitmap_gdk = hbitmap_gdk;
impl->is_destroyed = FALSE;
return glpixmap;
FAIL:
if (hdc_gdk != NULL)
DeleteDC (hdc_gdk);
if (hdc_gl != NULL)
DeleteDC (hdc_gl);
if (pixmap_gl != NULL)
g_object_unref (G_OBJECT (pixmap_gl));
return NULL;
}
