/**
* gdk_x11_gl_query_glx_extension:
* @glconfig: a #GdkGLConfig.
* @extension: name of GLX extension.
*
* Determines whether a given GLX extension is supported.
*
* Return value: TRUE if the GLX extension is supported, FALSE if not
* supported.
**/
gboolean
gdk_x11_gl_query_glx_extension (GdkGLConfig *glconfig, const char *extension)
{
static const char *extensions = NULL;
const char *start;
char *where, *terminator;
int major, minor;
g_return_val_if_fail (GDK_IS_GL_CONFIG(glconfig), FALSE);
/* Extension names should not have spaces. */
where = strchr (extension, ' ');
if (where || *extension == '\0')
return FALSE;
if (extensions == NULL)
{
/* Be careful not to call glXQueryExtensionsString if it
looks like the server doesn't support GLX 1.1.
Unfortunately, the original GLX 1.0 didn't have the notion
of GLX extensions. */
glXQueryVersion (GDK_GL_CONFIG_XDISPLAY (glconfig), &major, &minor);
if ((major == 1 && minor < 1) || (major < 1))
return FALSE;
int screen_num = GDK_GL_CONFIG(glconfig)->screen_num;
extensions = glXQueryExtensionsString (GDK_GL_CONFIG_XDISPLAY (glconfig), screen_num);
}
/* It takes a bit of care to be fool-proof about parsing
the GLX extensions string. Don't be fooled by
sub-strings, etc. */
start = extensions;
for (;;)
{
where = strstr (start, extension);
if (where == NULL)
break;
terminator = where + strlen (extension);
if (where == start || *(where - 1) == ' ')
if (*terminator == ' ' || *terminator == '\0')
{
GDK_GL_NOTE (MISC, g_message (" - %s - supported", extension));
return TRUE;
}
start = terminator;
}
GDK_GL_NOTE (MISC, g_message (" - %s - not supported", extension));
return FALSE;
}
static int lglext_widget_set_gl_capability(lua_State* L)
{
luaL_checktype(L, 1, LUA_TUSERDATA);
luaL_checktype(L, 2, LUA_TUSERDATA);
luaL_checktype(L, 3, LUA_TBOOLEAN);
luaL_checktype(L, 4, LUA_TNUMBER);
Object* obj1 = lua_touserdata(L, 1);
Object* obj2 = lua_touserdata(L, 2);
gboolean res = gtk_widget_set_gl_capability(GTK_WIDGET(obj1->pointer),
GDK_GL_CONFIG(obj2->pointer), NULL, lua_toboolean(L, 3),
lua_tointeger(L, 4));
lua_pushboolean(L, res);
return 1;
}
