static cairo_surface_t*
create_source_surface(int width, int height)
{
int rgba_attribs[] = {
GLX_RGBA,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_ALPHA_SIZE, 1,
GLX_DOUBLEBUFFER,
None };
XVisualInfo *visinfo;
GLXContext ctx;
struct closure *arg;
cairo_device_t *device;
cairo_surface_t *surface;
Display *dpy;
dpy = XOpenDisplay(NULL);
if (dpy == NULL)
return NULL;
visinfo = glXChooseVisual (dpy, DefaultScreen (dpy), rgba_attribs);
if (visinfo == NULL) {
XCloseDisplay (dpy);
return NULL;
}
ctx = glXCreateContext (dpy, visinfo, NULL, True);
XFree (visinfo);
if (ctx == NULL) {
XCloseDisplay (dpy);
return NULL;
}
arg = (struct closure*)(malloc (sizeof (struct closure)));
arg->dpy = dpy;
arg->ctx = ctx;
device = cairo_glx_device_create (dpy, ctx);
if (cairo_device_set_user_data (device,
(cairo_user_data_key_t *) cleanup,
arg,
cleanup))
{
cleanup (arg);
return NULL;
}
surface = cairo_gl_surface_create (device,
CAIRO_CONTENT_COLOR_ALPHA,
width, height);
cairo_device_destroy (device);
return surface;
}
static VALUE
cr_device_finish (VALUE self)
{
cairo_device_t *device;
rb_cairo__io_callback_closure_t *closure;
device = _SELF;
closure = cairo_device_get_user_data (device, &cr_closure_key);
cairo_device_finish (device);
cairo_device_set_user_data (device, &cr_finished_key, (void *)CR_TRUE, NULL);
cairo_device_set_user_data (device, &cr_object_holder_key, NULL, NULL);
if (closure && !NIL_P (closure->error))
rb_exc_raise (closure->error);
cr_device_check_status (device);
return self;
}
static cairo_surface_t *
_cairo_boilerplate_xcb_create_surface (const char *name,
cairo_content_t content,
double width,
double height,
double max_width,
double max_height,
cairo_boilerplate_mode_t mode,
void **closure)
{
xcb_screen_t *root;
xcb_target_closure_t *xtc;
xcb_connection_t *c;
xcb_render_query_pict_formats_cookie_t formats_cookie;
xcb_render_pictforminfo_t *render_format;
xcb_render_pictforminfo_iterator_t i;
struct xcb_info *info;
int depth;
xcb_void_cookie_t cookie;
cairo_surface_t *surface;
cairo_status_t status;
*closure = xtc = xmalloc (sizeof (xcb_target_closure_t));
info = xcalloc (1, sizeof (struct xcb_info));
if (width == 0)
width = 1;
if (height == 0)
height = 1;
xtc->c = c = xcb_connect(NULL,NULL);
if (c == NULL || xcb_connection_has_error(c)) {
free (xtc);
return NULL;
}
root = xcb_setup_roots_iterator(xcb_get_setup(c)).data;
formats_cookie = xcb_render_query_pict_formats (c);
xtc->surface = NULL;
xtc->is_pixmap = TRUE;
xtc->drawable = xcb_generate_id (c);
switch (content) {
case CAIRO_CONTENT_COLOR:
depth = 24;
break;
case CAIRO_CONTENT_COLOR_ALPHA:
depth = 32;
break;
case CAIRO_CONTENT_ALPHA: /* would be XCB_PICT_STANDARD_A_8 */
default:
xcb_disconnect (c);
free (xtc);
return NULL;
}
cookie = xcb_create_pixmap_checked (c, depth,
xtc->drawable, root->root,
width, height);
/* slow, but sure */
if (xcb_request_check (c, cookie) != NULL) {
xcb_disconnect (c);
free (xtc);
return NULL;
}
info->formats = xcb_render_query_pict_formats_reply (c, formats_cookie, 0);
if (info->formats == NULL)
return NULL;
for (i = xcb_render_query_pict_formats_formats_iterator (info->formats);
i.rem;
xcb_render_pictforminfo_next (&i))
{
if (XCB_RENDER_PICT_TYPE_DIRECT != i.data->type)
continue;
if (i.data->depth == 32) {
if (info->render_format[0] == 0)
info->render_format[0] = i.data;
} else if (i.data->depth == 24) {
if (info->render_format[1] == 0)
info->render_format[1] = i.data;
} else if (i.data->depth == 8) {
if (info->render_format[2] == 0)
info->render_format[2] = i.data;
}
}
assert (info->render_format[0]);
assert (info->render_format[1]);
assert (info->render_format[2]);
switch (content) {
default:
case CAIRO_CONTENT_COLOR_ALPHA:
render_format = info->render_format[0];
break;
case CAIRO_CONTENT_COLOR:
render_format = info->render_format[1];
break;
case CAIRO_CONTENT_ALPHA: /* would be XCB_PICT_STANDARD_A_8 */
render_format = info->render_format[2];
break;
}
surface = cairo_xcb_surface_create_with_xrender_format (c, root,
xtc->drawable,
render_format,
width, height);
cairo_device_set_user_data (cairo_surface_get_device (surface), &key, info, free);
if (mode != CAIRO_BOILERPLATE_MODE_PERF)
_cairo_boilerplate_xcb_setup_test_surface(surface);
xtc->device = cairo_device_reference (cairo_surface_get_device (surface));
status = cairo_surface_set_user_data (surface, &xcb_closure_key, xtc, NULL);
if (status == CAIRO_STATUS_SUCCESS)
return surface;
cairo_surface_destroy (surface);
_cairo_boilerplate_xcb_cleanup (xtc);
return cairo_boilerplate_surface_create_in_error (status);
}