static gboolean
clutter_backend_wayland_create_context (ClutterBackend *backend,
GError **error)
{
ClutterBackendWayland *backend_wayland = CLUTTER_BACKEND_WAYLAND (backend);
const gchar *egl_extensions = NULL;
gboolean status;
int retry_cookie;
gboolean try_fallback;
GError *try_error = NULL;
if (backend_wayland->egl_context != EGL_NO_CONTEXT)
return TRUE;
#if defined(HAVE_COGL_GL)
eglBindAPI (EGL_OPENGL_API);
#else
eglBindAPI (EGL_OPENGL_ES_API);
#endif
egl_extensions = eglQueryString (backend_wayland->edpy, EGL_EXTENSIONS);
if (!_cogl_check_extension (_COGL_SURFACELESS_EXTENSION, egl_extensions))
{
g_debug("Could not find the " _COGL_SURFACELESS_EXTENSION
" extension; falling back to binding a dummy surface");
if (!make_dummy_surface(backend_wayland))
{
g_set_error (error, CLUTTER_INIT_ERROR,
CLUTTER_INIT_ERROR_BACKEND,
"Could not create dummy surface");
return FALSE;
}
}
else
{
backend_wayland->egl_config = NULL;
backend_wayland->egl_surface = EGL_NO_SURFACE;
}
retry_cookie = 0;
while (!(status = try_create_context (backend,
retry_cookie,
&try_fallback,
&try_error)) &&
try_fallback)
{
g_warning ("Failed to create context: %s\nWill try fallback...",
try_error->message);
g_error_free (try_error);
try_error = NULL;
retry_cookie++;
}
if (!status)
g_propagate_error (error, try_error);
return status;
}
static gboolean
create_context (CoglDisplay *display, GError **error)
{
CoglDisplayEGL *egl_display = display->winsys;
/* Note: we don't just rely on eglChooseConfig to correctly
* report that the driver doesn't support a stencil buffer
* because we've seen PVR drivers that claim stencil buffer
* support according to the EGLConfig but then later fail
* when trying to create a context with such a config.
*/
if (try_create_context (display, TRUE, error))
{
egl_display->stencil_disabled = FALSE;
return TRUE;
}
else
{
g_clear_error (error);
cleanup_context (display);
egl_display->stencil_disabled = TRUE;
return try_create_context (display, FALSE, error);
}
}
static bool
_cg_winsys_display_setup(cg_display_t *display, cg_error_t **error)
{
cg_display_egl_t *egl_display;
cg_renderer_t *renderer = display->renderer;
cg_renderer_egl_t *egl_renderer = renderer->winsys;
c_return_val_if_fail(display->winsys == NULL, false);
egl_display = c_slice_new0(cg_display_egl_t);
display->winsys = egl_display;
#ifdef CG_HAS_WAYLAND_EGL_SERVER_SUPPORT
if (display->wayland_compositor_display) {
struct wl_display *wayland_display =
display->wayland_compositor_display;
cg_renderer_egl_t *egl_renderer = display->renderer->winsys;
if (egl_renderer->pf_eglBindWaylandDisplay)
egl_renderer->pf_eglBindWaylandDisplay(egl_renderer->edpy,
wayland_display);
}
#endif
if (egl_renderer->platform_vtable->display_setup &&
!egl_renderer->platform_vtable->display_setup(display, error))
goto error;
if (!try_create_context(display, error))
goto error;
egl_display->found_egl_config = true;
return true;
error:
_cg_winsys_display_destroy(display);
return false;
}
static CoglBool
_cogl_winsys_display_setup (CoglDisplay *display,
CoglError **error)
{
CoglDisplayEGL *egl_display;
CoglRenderer *renderer = display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
_COGL_RETURN_VAL_IF_FAIL (display->winsys == NULL, FALSE);
egl_display = g_slice_new0 (CoglDisplayEGL);
display->winsys = egl_display;
#ifdef COGL_HAS_WAYLAND_EGL_SERVER_SUPPORT
if (display->wayland_compositor_display)
{
struct wl_display *wayland_display = display->wayland_compositor_display;
CoglRendererEGL *egl_renderer = display->renderer->winsys;
egl_renderer->pf_eglBindWaylandDisplay (egl_renderer->edpy,
wayland_display);
}
#endif
if (egl_renderer->platform_vtable->display_setup &&
!egl_renderer->platform_vtable->display_setup (display, error))
goto error;
if (!try_create_context (display, error))
goto error;
egl_display->found_egl_config = TRUE;
return TRUE;
error:
_cogl_winsys_display_destroy (display);
return FALSE;
}
