SDL_Overlay *X11_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display)
{
SDL_Overlay *overlay;
struct private_yuvhwdata *hwdata;
int xv_port;
unsigned int i, j, k;
unsigned int adaptors;
SDL_NAME(XvAdaptorInfo) *ainfo;
int bpp;
#ifndef NO_SHARED_MEMORY
XShmSegmentInfo *yuvshm;
#endif
#ifdef INTEL_XV_BADALLOC_WORKAROUND
int intel_adapter = False;
#endif
xv_port = -1;
if ( (Success == SDL_NAME(XvQueryExtension)(GFX_Display, &j, &j, &j, &j, &j)) &&
(Success == SDL_NAME(XvQueryAdaptors)(GFX_Display,
RootWindow(GFX_Display, SDL_Screen),
&adaptors, &ainfo)) ) {
#ifdef USE_LAST_ADAPTOR
for ( i=0; i < adaptors; ++i )
#else
for ( i=0; (i < adaptors) && (xv_port == -1); ++i )
#endif
{
if ( BUGGY_XFREE86(<=, 4001) ) {
int visual_ok = 0;
for ( j=0; j<ainfo[i].num_formats; ++j ) {
if ( ainfo[i].formats[j].visual_id ==
SDL_Visual->visualid ) {
visual_ok = 1;
break;
}
}
if ( ! visual_ok ) {
continue;
}
}
#ifdef INTEL_XV_BADALLOC_WORKAROUND
if ( !strcmp(ainfo[i].name, "Intel(R) Video Overla"))
intel_adapter = True;
else
intel_adapter = False;
#endif
if ( (ainfo[i].type & XvInputMask) &&
(ainfo[i].type & XvImageMask) ) {
int num_formats;
SDL_NAME(XvImageFormatValues) *formats;
formats = SDL_NAME(XvListImageFormats)(GFX_Display,
ainfo[i].base_id, &num_formats);
#ifdef USE_LAST_ADAPTOR
for ( j=0; j < num_formats; ++j )
#else
for ( j=0; (j < num_formats) && (xv_port == -1); ++j )
#endif
{
if ( (Uint32)formats[j].id == format ) {
for ( k=0; k < ainfo[i].num_ports; ++k ) {
if ( Success == SDL_NAME(XvGrabPort)(GFX_Display, ainfo[i].base_id+k, CurrentTime) ) {
xv_port = ainfo[i].base_id+k;
break;
}
}
}
}
if ( formats ) {
XFree(formats);
}
}
}
SDL_NAME(XvFreeAdaptorInfo)(ainfo);
}
switch (format) {
case SDL_YUY2_OVERLAY:
case SDL_UYVY_OVERLAY:
case SDL_YVYU_OVERLAY:
bpp = 2;
break;
default:
bpp = 1;
break;
}
#if 0
for ( i=0; i < adaptors; ++i ) {
if (ainfo[i].name != NULL) Xfree(ainfo[i].name);
if (ainfo[i].formats != NULL) Xfree(ainfo[i].formats);
}
Xfree(ainfo);
#endif
if ( xv_port == -1 ) {
SDL_SetError("No available video ports for requested format");
return(NULL);
}
{
static const char *attr[] = { "XV_AUTOPAINT_COLORKEY", "XV_AUTOPAINT_COLOURKEY" };
unsigned int i;
SDL_NAME(XvSelectPortNotify)(GFX_Display, xv_port, True);
X_handler = XSetErrorHandler(xv_errhandler);
for ( i=0; i < sizeof(attr)/(sizeof attr[0]); ++i ) {
Atom a;
xv_error = False;
a = XInternAtom(GFX_Display, attr[i], True);
if ( a != None ) {
SDL_NAME(XvSetPortAttribute)(GFX_Display, xv_port, a, 1);
XSync(GFX_Display, True);
if ( ! xv_error ) {
break;
}
}
}
XSetErrorHandler(X_handler);
SDL_NAME(XvSelectPortNotify)(GFX_Display, xv_port, False);
}
overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay);
if ( overlay == NULL ) {
SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime);
SDL_OutOfMemory();
return(NULL);
}
SDL_memset(overlay, 0, (sizeof *overlay));
overlay->format = format;
overlay->w = width;
overlay->h = height;
overlay->hwfuncs = &x11_yuvfuncs;
overlay->hw_overlay = 1;
hwdata = (struct private_yuvhwdata *)SDL_malloc(sizeof *hwdata);
overlay->hwdata = hwdata;
if ( hwdata == NULL ) {
SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime);
SDL_OutOfMemory();
SDL_FreeYUVOverlay(overlay);
return(NULL);
}
hwdata->port = xv_port;
#ifndef NO_SHARED_MEMORY
yuvshm = &hwdata->yuvshm;
SDL_memset(yuvshm, 0, sizeof(*yuvshm));
hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format,
0, width, height, yuvshm);
#ifdef PITCH_WORKAROUND
if ( hwdata->image != NULL && hwdata->image->pitches[0] != (width*bpp) ) {
width = hwdata->image->pitches[0] / bpp;
XFree(hwdata->image);
hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format,
0, width, height, yuvshm);
}
#endif
hwdata->yuv_use_mitshm = (hwdata->image != NULL);
if ( hwdata->yuv_use_mitshm ) {
yuvshm->shmid = shmget(IPC_PRIVATE, hwdata->image->data_size,
IPC_CREAT | 0777);
if ( yuvshm->shmid >= 0 ) {
yuvshm->shmaddr = (char *)shmat(yuvshm->shmid, 0, 0);
yuvshm->readOnly = False;
if ( yuvshm->shmaddr != (char *)-1 ) {
shm_error = False;
X_handler = XSetErrorHandler(shm_errhandler);
XShmAttach(GFX_Display, yuvshm);
XSync(GFX_Display, True);
XSetErrorHandler(X_handler);
if ( shm_error )
shmdt(yuvshm->shmaddr);
} else {
shm_error = True;
}
shmctl(yuvshm->shmid, IPC_RMID, NULL);
} else {
shm_error = True;
}
if ( shm_error ) {
XFree(hwdata->image);
hwdata->yuv_use_mitshm = 0;
} else {
hwdata->image->data = yuvshm->shmaddr;
}
}
if ( !hwdata->yuv_use_mitshm )
#endif
{
hwdata->image = SDL_NAME(XvCreateImage)(GFX_Display, xv_port, format,
0, width, height);
#ifdef PITCH_WORKAROUND
if ( hwdata->image != NULL && hwdata->image->pitches[0] != (width*bpp) ) {
XFree(hwdata->image);
width = hwdata->image->pitches[0] / bpp;
hwdata->image = SDL_NAME(XvCreateImage)(GFX_Display, xv_port, format,
0, width, height);
}
#endif
if ( hwdata->image == NULL ) {
SDL_SetError("Couldn't create XVideo image");
SDL_FreeYUVOverlay(overlay);
return(NULL);
}
hwdata->image->data = SDL_malloc(hwdata->image->data_size);
if ( hwdata->image->data == NULL ) {
SDL_OutOfMemory();
SDL_FreeYUVOverlay(overlay);
return(NULL);
}
}
overlay->planes = hwdata->image->num_planes;
overlay->pitches = (Uint16 *)SDL_malloc(overlay->planes * sizeof(Uint16));
overlay->pixels = (Uint8 **)SDL_malloc(overlay->planes * sizeof(Uint8 *));
if ( !overlay->pitches || !overlay->pixels ) {
SDL_OutOfMemory();
SDL_FreeYUVOverlay(overlay);
return(NULL);
}
for ( i=0; i<overlay->planes; ++i ) {
overlay->pitches[i] = hwdata->image->pitches[i];
overlay->pixels[i] = (Uint8 *)hwdata->image->data +
hwdata->image->offsets[i];
}
#ifdef XFREE86_REFRESH_HACK
X11_DisableAutoRefresh(this);
#endif
#ifdef INTEL_XV_BADALLOC_WORKAROUND
if (intel_adapter)
{
xv_error = False;
X_handler = XSetErrorHandler(intel_errhandler);
X11_ClearYUVOverlay(overlay);
#ifndef NO_SHARED_MEMORY
if ( hwdata->yuv_use_mitshm ) {
SDL_NAME(XvShmPutImage)(GFX_Display, hwdata->port,
SDL_Window, SDL_GC,
hwdata->image,
0, 0, overlay->w, overlay->h,
0, 0, 1, 1, False);
}
else
#endif
{
SDL_NAME(XvPutImage)(GFX_Display, hwdata->port,
SDL_Window, SDL_GC,
hwdata->image,
0, 0, overlay->w, overlay->h,
0, 0, 1, 1);
}
XSync(GFX_Display, False);
XSetErrorHandler(X_handler);
if (xv_error)
{
X11_FreeYUVOverlay(this, overlay);
return NULL;
}
X11_RefreshDisplay(this);
}
#endif
return(overlay);
}
SDL_Overlay *X11_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display)
{
SDL_Overlay *overlay;
struct private_yuvhwdata *hwdata;
int xv_port;
int i, j, k;
int adaptors;
SDL_NAME(XvAdaptorInfo) *ainfo;
XShmSegmentInfo *yuvshm;
/* Look for the XVideo extension with a valid port for this format */
xv_port = -1;
if ( (Success == SDL_NAME(XvQueryExtension)(GFX_Display, &j, &j, &j, &j, &j)) &&
(Success == SDL_NAME(XvQueryAdaptors)(GFX_Display,
RootWindow(GFX_Display, SDL_Screen),
&adaptors, &ainfo)) ) {
#ifdef USE_LAST_ADAPTOR
for ( i=0; i < adaptors; ++i )
#else
for ( i=0; (i < adaptors) && (xv_port == -1); ++i )
#endif /* USE_LAST_ADAPTOR */
{
/* Check to see if the visual can be used */
if ( BUGGY_XFREE86(<=, 4001) ) {
int visual_ok = 0;
for ( j=0; j<ainfo[i].num_formats; ++j ) {
if ( ainfo[i].formats[j].visual_id ==
SDL_Visual->visualid ) {
visual_ok = 1;
break;
}
}
if ( ! visual_ok ) {
continue;
}
}
if ( (ainfo[i].type & XvInputMask) &&
(ainfo[i].type & XvImageMask) ) {
int num_formats;
SDL_NAME(XvImageFormatValues) *formats;
formats = SDL_NAME(XvListImageFormats)(GFX_Display,
ainfo[i].base_id, &num_formats);
#ifdef USE_LAST_ADAPTOR
for ( j=0; j < num_formats; ++j )
#else
for ( j=0; (j < num_formats) && (xv_port == -1); ++j )
#endif /* USE_LAST_ADAPTOR */
{
if ( (Uint32)formats[j].id == format ) {
for ( k=0; k < ainfo[i].num_ports; ++k ) {
if ( Success == SDL_NAME(XvGrabPort)(GFX_Display, ainfo[i].base_id+k, CurrentTime) ) {
xv_port = ainfo[i].base_id+k;
break;
}
}
}
}
if ( formats ) {
XFree(formats);
}
}
}
SDL_NAME(XvFreeAdaptorInfo)(ainfo);
}
#if 0
/*
* !!! FIXME:
* "Here are some diffs for X11 and yuv. Note that the last part 2nd
* diff should probably be a new call to XvQueryAdaptorFree with ainfo
* and the number of adaptors, instead of the loop through like I did."
*
* ACHTUNG: This is broken! It looks like XvFreeAdaptorInfo does this
* for you, so we end up with a double-free. I need to look at this
* more closely... --ryan.
*/
for ( i=0; i < adaptors; ++i ) {
if (ainfo[i].name != NULL) Xfree(ainfo[i].name);
if (ainfo[i].formats != NULL) Xfree(ainfo[i].formats);
}
Xfree(ainfo);
#endif
if ( xv_port == -1 ) {
SDL_SetError("No available video ports for requested format");
return(NULL);
}
/* Create the overlay structure */
overlay = (SDL_Overlay *)malloc(sizeof *overlay);
if ( overlay == NULL ) {
SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime);
SDL_OutOfMemory();
return(NULL);
}
memset(overlay, 0, (sizeof *overlay));
/* Fill in the basic members */
overlay->format = format;
overlay->w = width;
overlay->h = height;
/* Set up the YUV surface function structure */
overlay->hwfuncs = &x11_yuvfuncs;
overlay->hw_overlay = 1;
/* Create the pixel data and lookup tables */
hwdata = (struct private_yuvhwdata *)malloc(sizeof *hwdata);
overlay->hwdata = hwdata;
if ( hwdata == NULL ) {
SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime);
SDL_OutOfMemory();
SDL_FreeYUVOverlay(overlay);
return(NULL);
}
yuvshm = &hwdata->yuvshm;
memset(yuvshm, 0, sizeof(*yuvshm));
hwdata->port = xv_port;
hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format,
0, width, height, yuvshm);
#ifdef PITCH_WORKAROUND
if ( hwdata->image != NULL && hwdata->image->pitches[0] != width )
{
/* Ajust overlay width according to pitch */
switch (format) {
case SDL_YV12_OVERLAY:
case SDL_IYUV_OVERLAY:
width = hwdata->image->pitches[0];
break;
case SDL_YUY2_OVERLAY:
case SDL_UYVY_OVERLAY:
case SDL_YVYU_OVERLAY:
width = hwdata->image->pitches[0] / 2;
break;
default:
/* We should never get here (caught above) */
return(NULL);
}
XFree(hwdata->image);
hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format,
0, width, height, yuvshm);
}
#endif
if ( hwdata->image == NULL ) {
SDL_OutOfMemory();
SDL_FreeYUVOverlay(overlay);
return(NULL);
}
yuvshm->shmid = shmget(IPC_PRIVATE, hwdata->image->data_size,
IPC_CREAT | 0777);
if ( yuvshm->shmid < 0 ) {
SDL_SetError("Unable to get %d bytes shared memory",
hwdata->image->data_size);
SDL_FreeYUVOverlay(overlay);
return(NULL);
}
yuvshm->shmaddr = (char *) shmat(yuvshm->shmid, 0, 0);
yuvshm->readOnly = False;
hwdata->image->data = yuvshm->shmaddr;
XShmAttach(GFX_Display, yuvshm);
XSync(GFX_Display, False);
shmctl(yuvshm->shmid, IPC_RMID, 0);
/* Find the pitch and offset values for the overlay */
overlay->planes = hwdata->image->num_planes;
overlay->pitches = (Uint16 *)malloc(overlay->planes * sizeof(Uint16));
overlay->pixels = (Uint8 **)malloc(overlay->planes * sizeof(Uint8 *));
if ( !overlay->pitches || !overlay->pixels ) {
SDL_OutOfMemory();
SDL_FreeYUVOverlay(overlay);
return(NULL);
}
for ( i=0; i<overlay->planes; ++i ) {
overlay->pitches[i] = hwdata->image->pitches[i];
overlay->pixels[i] = (Uint8 *)hwdata->image->data +
hwdata->image->offsets[i];
}
#ifdef XFREE86_REFRESH_HACK
/* Work around an XFree86 X server bug (?)
We can't perform normal updates in windows that have video
being output to them. See SDL_x11image.c for more details.
*/
X11_DisableAutoRefresh(this);
#endif
/* We're all done.. */
return(overlay);
}
SDL_Overlay *X11_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display)
{
SDL_Overlay *overlay;
struct private_yuvhwdata *hwdata;
int xv_port;
unsigned int i, j, k;
unsigned int adaptors;
SDL_NAME(XvAdaptorInfo) *ainfo;
int bpp;
#ifndef NO_SHARED_MEMORY
XShmSegmentInfo *yuvshm;
#endif
/* Look for the XVideo extension with a valid port for this format */
xv_port = -1;
if ( (Success == SDL_NAME(XvQueryExtension)(GFX_Display, &j, &j, &j, &j, &j)) &&
(Success == SDL_NAME(XvQueryAdaptors)(GFX_Display,
RootWindow(GFX_Display, SDL_Screen),
&adaptors, &ainfo)) ) {
#ifdef USE_LAST_ADAPTOR
for ( i=0; i < adaptors; ++i )
#else
for ( i=0; (i < adaptors) && (xv_port == -1); ++i )
#endif /* USE_LAST_ADAPTOR */
{
/* Check to see if the visual can be used */
if ( BUGGY_XFREE86(<=, 4001) ) {
int visual_ok = 0;
for ( j=0; j<ainfo[i].num_formats; ++j ) {
if ( ainfo[i].formats[j].visual_id ==
SDL_Visual->visualid ) {
visual_ok = 1;
break;
}
}
if ( ! visual_ok ) {
continue;
}
}
if ( (ainfo[i].type & XvInputMask) &&
(ainfo[i].type & XvImageMask) ) {
int num_formats;
SDL_NAME(XvImageFormatValues) *formats;
formats = SDL_NAME(XvListImageFormats)(GFX_Display,
ainfo[i].base_id, &num_formats);
#ifdef USE_LAST_ADAPTOR
for ( j=0; j < num_formats; ++j )
#else
for ( j=0; (j < num_formats) && (xv_port == -1); ++j )
#endif /* USE_LAST_ADAPTOR */
{
if ( (Uint32)formats[j].id == format ) {
for ( k=0; k < ainfo[i].num_ports; ++k ) {
if ( Success == SDL_NAME(XvGrabPort)(GFX_Display, ainfo[i].base_id+k, CurrentTime) ) {
xv_port = ainfo[i].base_id+k;
break;
}
}
}
}
if ( formats ) {
XFree(formats);
}
}
}
SDL_NAME(XvFreeAdaptorInfo)(ainfo);
}
/* Precalculate the bpp for the pitch workaround below */
switch (format) {
/* Add any other cases we need to support... */
case SDL_YUY2_OVERLAY:
case SDL_UYVY_OVERLAY:
case SDL_YVYU_OVERLAY:
bpp = 2;
break;
default:
bpp = 1;
break;
}
#if 0
/*
* !!! FIXME:
* "Here are some diffs for X11 and yuv. Note that the last part 2nd
* diff should probably be a new call to XvQueryAdaptorFree with ainfo
* and the number of adaptors, instead of the loop through like I did."
*
* ACHTUNG: This is broken! It looks like XvFreeAdaptorInfo does this
* for you, so we end up with a double-free. I need to look at this
* more closely... --ryan.
*/
for ( i=0; i < adaptors; ++i ) {
if (ainfo[i].name != NULL) Xfree(ainfo[i].name);
if (ainfo[i].formats != NULL) Xfree(ainfo[i].formats);
}
Xfree(ainfo);
#endif
if ( xv_port == -1 ) {
SDL_SetError("No available video ports for requested format");
return(NULL);
}
/* Enable auto-painting of the overlay colorkey */
{
static const char *attr[] = { "XV_AUTOPAINT_COLORKEY", "XV_AUTOPAINT_COLOURKEY" };
unsigned int i;
SDL_NAME(XvSelectPortNotify)(GFX_Display, xv_port, True);
X_handler = XSetErrorHandler(xv_errhandler);
for ( i=0; i < sizeof(attr)/(sizeof attr[0]); ++i ) {
Atom a;
xv_error = False;
a = XInternAtom(GFX_Display, attr[i], True);
if ( a != None ) {
SDL_NAME(XvSetPortAttribute)(GFX_Display, xv_port, a, 1);
XSync(GFX_Display, True);
if ( ! xv_error ) {
break;
}
}
}
XSetErrorHandler(X_handler);
SDL_NAME(XvSelectPortNotify)(GFX_Display, xv_port, False);
}
/* Create the overlay structure */
overlay = (SDL_Overlay *)SDL_malloc(sizeof *overlay);
if ( overlay == NULL ) {
SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime);
SDL_OutOfMemory();
return(NULL);
}
SDL_memset(overlay, 0, (sizeof *overlay));
/* Fill in the basic members */
overlay->format = format;
overlay->w = width;
overlay->h = height;
/* Set up the YUV surface function structure */
overlay->hwfuncs = &x11_yuvfuncs;
overlay->hw_overlay = 1;
/* Create the pixel data and lookup tables */
hwdata = (struct private_yuvhwdata *)SDL_malloc(sizeof *hwdata);
overlay->hwdata = hwdata;
if ( hwdata == NULL ) {
SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime);
SDL_OutOfMemory();
SDL_FreeYUVOverlay(overlay);
return(NULL);
}
hwdata->port = xv_port;
#ifndef NO_SHARED_MEMORY
yuvshm = &hwdata->yuvshm;
SDL_memset(yuvshm, 0, sizeof(*yuvshm));
hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format,
0, width, height, yuvshm);
#ifdef PITCH_WORKAROUND
if ( hwdata->image != NULL && hwdata->image->pitches[0] != (width*bpp) ) {
/* Ajust overlay width according to pitch */
XFree(hwdata->image);
width = hwdata->image->pitches[0] / bpp;
hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format,
0, width, height, yuvshm);
}
#endif /* PITCH_WORKAROUND */
hwdata->yuv_use_mitshm = (hwdata->image != NULL);
if ( hwdata->yuv_use_mitshm ) {
yuvshm->shmid = shmget(IPC_PRIVATE, hwdata->image->data_size,
IPC_CREAT | 0777);
if ( yuvshm->shmid >= 0 ) {
yuvshm->shmaddr = (char *)shmat(yuvshm->shmid, 0, 0);
yuvshm->readOnly = False;
if ( yuvshm->shmaddr != (char *)-1 ) {
shm_error = False;
X_handler = XSetErrorHandler(shm_errhandler);
XShmAttach(GFX_Display, yuvshm);
XSync(GFX_Display, True);
XSetErrorHandler(X_handler);
if ( shm_error )
shmdt(yuvshm->shmaddr);
} else {
shm_error = True;
}
shmctl(yuvshm->shmid, IPC_RMID, NULL);
} else {
shm_error = True;
}
if ( shm_error ) {
XFree(hwdata->image);
hwdata->yuv_use_mitshm = 0;
} else {
hwdata->image->data = yuvshm->shmaddr;
}
}
if ( !hwdata->yuv_use_mitshm )
#endif /* NO_SHARED_MEMORY */
{
hwdata->image = SDL_NAME(XvCreateImage)(GFX_Display, xv_port, format,
0, width, height);
#ifdef PITCH_WORKAROUND
if ( hwdata->image != NULL && hwdata->image->pitches[0] != (width*bpp) ) {
/* Ajust overlay width according to pitch */
XFree(hwdata->image);
width = hwdata->image->pitches[0] / bpp;
hwdata->image = SDL_NAME(XvCreateImage)(GFX_Display, xv_port, format,
0, width, height);
}
#endif /* PITCH_WORKAROUND */
if ( hwdata->image == NULL ) {
SDL_SetError("Couldn't create XVideo image");
SDL_FreeYUVOverlay(overlay);
return(NULL);
}
hwdata->image->data = SDL_malloc(hwdata->image->data_size);
if ( hwdata->image->data == NULL ) {
SDL_OutOfMemory();
SDL_FreeYUVOverlay(overlay);
return(NULL);
}
}
/* Find the pitch and offset values for the overlay */
overlay->planes = hwdata->image->num_planes;
overlay->pitches = (Uint16 *)SDL_malloc(overlay->planes * sizeof(Uint16));
overlay->pixels = (Uint8 **)SDL_malloc(overlay->planes * sizeof(Uint8 *));
if ( !overlay->pitches || !overlay->pixels ) {
SDL_OutOfMemory();
SDL_FreeYUVOverlay(overlay);
return(NULL);
}
for ( i=0; i<overlay->planes; ++i ) {
overlay->pitches[i] = hwdata->image->pitches[i];
overlay->pixels[i] = (Uint8 *)hwdata->image->data +
hwdata->image->offsets[i];
}
#ifdef XFREE86_REFRESH_HACK
/* Work around an XFree86 X server bug (?)
We can't perform normal updates in windows that have video
being output to them. See SDL_x11image.c for more details.
*/
X11_DisableAutoRefresh(this);
#endif
/* We're all done.. */
return(overlay);
}