static gboolean
_gdk_win32_gl_context_impl_make_current (GdkGLContext *glcontext,
GdkGLDrawable *draw,
GdkGLDrawable *read)
{
GdkGLWindowImplWin32 *impl;
HDC hdc;
HGLRC hglrc;
g_return_val_if_fail (GDK_IS_WIN32_GL_CONTEXT (glcontext), FALSE);
g_return_val_if_fail (GDK_IS_WIN32_GL_WINDOW (draw), FALSE);
if (GDK_GL_WINDOW_IS_DESTROYED (GDK_GL_WINDOW (draw)) ||
GDK_GL_CONTEXT_IS_DESTROYED (glcontext))
return FALSE;
impl = GDK_GL_WINDOW_IMPL_WIN32 (GDK_GL_WINDOW (draw)->impl);
/* Get DC. */
hdc = GDK_GL_WINDOW_IMPL_WIN32_HDC_GET (impl);
/* Get GLRC. */
hglrc = GDK_GL_CONTEXT_HGLRC (glcontext);
GDK_GL_NOTE_FUNC_IMPL ("wglMakeCurrent");
if (!wglMakeCurrent (hdc, hglrc))
{
g_warning ("wglMakeCurrent() failed");
_gdk_gl_context_set_gl_drawable (glcontext, NULL);
/* currently unused. */
/* _gdk_gl_context_set_gl_drawable_read (glcontext, NULL); */
return FALSE;
}
_gdk_gl_context_set_gl_drawable (glcontext, draw);
/* currently unused. */
/* _gdk_gl_context_set_gl_drawable_read (glcontext, read); */
if (_GDK_GL_CONFIG_AS_SINGLE_MODE (impl->glconfig))
{
/* We do this because we are treating a double-buffered frame
buffer as a single-buffered frame buffer because the system
does not appear to export any suitable single-buffered
visuals (in which the following are necessary). */
glDrawBuffer (GL_FRONT);
glReadBuffer (GL_FRONT);
}
GDK_GL_NOTE (MISC, _gdk_gl_print_gl_info ());
/*
* Do *NOT* release DC.
*
* With some graphics card, DC owned by rendering thread will be needed.
*/
return TRUE;
}
static gboolean
gdk_gl_pixmap_impl_win32_make_context_current (GdkGLDrawable *draw,
GdkGLDrawable *read,
GdkGLContext *glcontext)
{
GdkGLPixmapImplWin32 *impl;
HDC hdc;
HGLRC hglrc;
g_return_val_if_fail (GDK_IS_GL_PIXMAP_IMPL_WIN32 (draw), FALSE);
g_return_val_if_fail (GDK_IS_GL_CONTEXT_IMPL_WIN32 (glcontext), FALSE);
if (GDK_GL_PIXMAP_IS_DESTROYED (draw) ||
GDK_GL_CONTEXT_IS_DESTROYED (glcontext))
return FALSE;
impl = GDK_GL_PIXMAP_IMPL_WIN32 (draw);
/* Get DC. */
hdc = GDK_GL_PIXMAP_IMPL_WIN32_HDC_GET (impl);
/* Get GLRC. */
hglrc = GDK_GL_CONTEXT_HGLRC (glcontext);
GDK_GL_NOTE_FUNC_IMPL ("wglMakeCurrent");
if (!wglMakeCurrent (hdc, hglrc))
{
_gdk_gl_context_set_gl_drawable (glcontext, NULL);
/* currently unused. */
/* _gdk_gl_context_set_gl_drawable_read (glcontext, NULL); */
return FALSE;
}
_gdk_gl_context_set_gl_drawable (glcontext, draw);
/* currently unused. */
/* _gdk_gl_context_set_gl_drawable_read (glcontext, read); */
if (_GDK_GL_CONFIG_AS_SINGLE_MODE (impl->glconfig))
{
/* We do this because we are treating a double-buffered frame
buffer as a single-buffered frame buffer because the system
does not appear to export any suitable single-buffered
visuals (in which the following are necessary). */
glDrawBuffer (GL_FRONT);
glReadBuffer (GL_FRONT);
}
GDK_GL_NOTE (MISC, _gdk_gl_print_gl_info ());
/* Do *NOT* release DC. */
return TRUE;
}
