/**
* Return the GLX fbconfigs.
*/
const __GLcontextModes *
x11_screen_get_glx_configs(struct x11_screen *xscr)
{
return (x11_screen_init_glx(xscr))
? xscr->glx_dpy->screenConfigs[xscr->number]->configs
: NULL;
}
/**
* Enable DRI2 and returns the file descriptor of the DRM device. The file
* descriptor will be closed automatically when the screen is destoryed.
*/
int
x11_screen_enable_dri2(struct x11_screen *xscr,
x11_drawable_invalidate_buffers invalidate_buffers,
void *user_data)
{
if (xscr->dri_fd < 0) {
int fd;
drm_magic_t magic;
/* get the driver name and the device name first */
if (!x11_screen_probe_dri2(xscr, NULL, NULL))
return -1;
fd = open(xscr->dri_device, O_RDWR);
if (fd < 0) {
_eglLog(_EGL_WARNING, "failed to open %s", xscr->dri_device);
return -1;
}
memset(&magic, 0, sizeof(magic));
if (drmGetMagic(fd, &magic)) {
_eglLog(_EGL_WARNING, "failed to get magic");
close(fd);
return -1;
}
if (!DRI2Authenticate(xscr->dpy,
RootWindow(xscr->dpy, xscr->number), magic)) {
_eglLog(_EGL_WARNING, "failed to authenticate magic");
close(fd);
return -1;
}
if (!x11_screen_init_glx(xscr)) {
_eglLog(_EGL_WARNING, "failed to initialize GLX");
close(fd);
return -1;
}
if (xscr->glx_dpy->xscr) {
_eglLog(_EGL_WARNING,
"display is already managed by another x11 screen");
close(fd);
return -1;
}
xscr->glx_dpy->xscr = xscr;
xscr->dri_invalidate_buffers = invalidate_buffers;
xscr->dri_user_data = user_data;
xscr->dri_fd = fd;
}
return xscr->dri_fd;
}
/**
* Return true if the screen supports the extension.
*/
boolean
x11_screen_support(struct x11_screen *xscr, enum x11_screen_extension ext)
{
boolean supported = FALSE;
switch (ext) {
case X11_SCREEN_EXTENSION_XSHM:
supported = XShmQueryExtension(xscr->dpy);
break;
#ifdef GLX_DIRECT_RENDERING
case X11_SCREEN_EXTENSION_GLX:
supported = x11_screen_init_glx(xscr);
break;
case X11_SCREEN_EXTENSION_DRI2:
supported = x11_screen_init_dri2(xscr);
break;
#endif
default:
break;
}
return supported;
}
