/**
* Get the selected event mask for a drawable.
*/
PUBLIC void
glXGetSelectedEvent(Display * dpy, GLXDrawable drawable, unsigned long *mask)
{
#ifdef GLX_USE_APPLEGL
XWindowAttributes xwattr;
if (apple_glx_pbuffer_get_event_mask(drawable, mask))
return; /*done */
/*
* The spec allows a window, but currently there are no valid
* events for a window, so do nothing, but set the mask to 0.
*/
if (XGetWindowAttributes(dpy, drawable, &xwattr)) {
/* The window is valid, so set the mask to 0. */
*mask = 0;
return; /*done */
}
/* The drawable seems to be invalid. Report an error. */
__glXSendError(dpy, GLXBadDrawable, drawable, X_GLXGetDrawableAttributes,
true);
#else
unsigned int value;
/* The non-sense with value is required because on LP64 platforms
* sizeof(unsigned int) != sizeof(unsigned long). On little-endian
* we could just type-cast the pointer, but why?
*/
GetDrawableAttribute(dpy, drawable, GLX_EVENT_MASK_SGIX, &value);
*mask = value;
#endif
}
/**
* Query an attribute of a drawable.
*/
PUBLIC void
glXQueryDrawable(Display * dpy, GLXDrawable drawable,
int attribute, unsigned int *value)
{
WARN_ONCE_GLX_1_3(dpy, __func__);
GetDrawableAttribute(dpy, drawable, attribute, value);
}
/**
* Get the selected event mask for a drawable.
*/
PUBLIC void
glXGetSelectedEvent(Display *dpy, GLXDrawable drawable, unsigned long *mask)
{
unsigned int value;
/* The non-sense with value is required because on LP64 platforms
* sizeof(unsigned int) != sizeof(unsigned long). On little-endian
* we could just type-cast the pointer, but why?
*/
GetDrawableAttribute( dpy, drawable, GLX_EVENT_MASK_SGIX, & value );
*mask = value;
}
/**
* Query an attribute of a drawable.
*/
PUBLIC void
glXQueryDrawable(Display * dpy, GLXDrawable drawable,
int attribute, unsigned int *value)
{
WARN_ONCE_GLX_1_3(dpy, __func__);
#ifdef GLX_USE_APPLEGL
Window root;
int x, y;
unsigned int width, height, bd, depth;
if (apple_glx_pixmap_query(drawable, attribute, value))
return; /*done */
if (apple_glx_pbuffer_query(drawable, attribute, value))
return; /*done */
/*
* The OpenGL spec states that we should report GLXBadDrawable if
* the drawable is invalid, however doing so would require that we
* use XSetErrorHandler(), which is known to not be thread safe.
* If we use a round-trip call to validate the drawable, there could
* be a race, so instead we just opt in favor of letting the
* XGetGeometry request fail with a GetGeometry request X error
* rather than GLXBadDrawable, in what is hoped to be a rare
* case of an invalid drawable. In practice most and possibly all
* X11 apps using GLX shouldn't notice a difference.
*/
if (XGetGeometry
(dpy, drawable, &root, &x, &y, &width, &height, &bd, &depth)) {
switch (attribute) {
case GLX_WIDTH:
*value = width;
break;
case GLX_HEIGHT:
*value = height;
break;
}
}
#else
GetDrawableAttribute(dpy, drawable, attribute, value);
#endif
}
/**
* Query an attribute of a pbuffer.
*/
PUBLIC int
glXQueryGLXPbufferSGIX(Display * dpy, GLXPbufferSGIX drawable,
int attribute, unsigned int *value)
{
return GetDrawableAttribute(dpy, drawable, attribute, value);
}
/**
* Query an attribute of a drawable.
*/
PUBLIC void
GLX_PREFIX(glXQueryDrawable)(Display *dpy, GLXDrawable drawable,
int attribute, unsigned int *value)
{
GetDrawableAttribute( dpy, drawable, attribute, value );
}