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mutter/cogl/winsys/cogl-winsys-egl-wayland.c
Neil Roberts b3cc4d26d9 wayland: Send COGL_FRAME_EVENT_SYNC based on the frame callback 
Instead of queuing the frame sync event immediately after a swap, the
Wayland winsys now installs a frame callback and queues the event when
Wayland reports that the frame is complete. It also reports the
COGL_FRAME_EVENT_COMPLETE event at the same time because there is no
more information we can give.

This patch is a bit of a divergence from how the events are handled in
the GLX winsys. Instead of installing its own idle function, the
_cogl_onscreen_queue_event() function has now been made non-static so
that it can be used by the Wayland winsys. The frame callback now just
queues an event using that. The pending_frame_infos queue on the
CoglOnscreen isn't used and instead the CoglFrameInfo is immediately
popped off the queue so that it can be stored as part of the closure
data when the frame callback is set up. That way it would use the
right frame info even if somehow the Wayland callbacks were invoked in
the wrong order and the code is a bit simpler.

Reviewed-by: Robert Bragg <robert@linux.intel.com>

(cherry picked from commit f7ea370a0d5013c9f0263f37c7f892adc8a2f087)
2013-07-11 14:22:12 +01:00

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/*
* Cogl
*
* An object oriented GL/GLES Abstraction/Utility Layer
*
* Copyright (C) 2011 Intel Corporation.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
*
* Authors:
* Robert Bragg <robert@linux.intel.com>
* Neil Roberts <neil@linux.intel.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <wayland-client.h>
#include <wayland-egl.h>
#include <string.h>
#include <errno.h>
#include "cogl-winsys-egl-wayland-private.h"
#include "cogl-winsys-egl-private.h"
#include "cogl-renderer-private.h"
#include "cogl-onscreen-private.h"
#include "cogl-wayland-renderer.h"
#include "cogl-error-private.h"
#include "cogl-poll-private.h"
#include "cogl-frame-info-private.h"
static const CoglWinsysEGLVtable _cogl_winsys_egl_vtable;
static const CoglWinsysVtable *parent_vtable;
typedef struct _CoglRendererWayland
{
struct wl_display *wayland_display;
struct wl_compositor *wayland_compositor;
struct wl_shell *wayland_shell;
struct wl_registry *wayland_registry;
int fd;
} CoglRendererWayland;
typedef struct _CoglDisplayWayland
{
struct wl_surface *wayland_surface;
struct wl_egl_window *wayland_egl_native_window;
} CoglDisplayWayland;
typedef struct _CoglOnscreenWayland
{
struct wl_egl_window *wayland_egl_native_window;
struct wl_surface *wayland_surface;
struct wl_shell_surface *wayland_shell_surface;
/* Resizing a wayland framebuffer doesn't take affect
* until the next swap buffers request, so we have to
* track the resize geometry until then... */
int pending_width;
int pending_height;
int pending_dx;
int pending_dy;
CoglBool has_pending;
CoglBool shell_surface_type_set;
CoglList frame_callbacks;
} CoglOnscreenWayland;
typedef struct
{
CoglList link;
CoglFrameInfo *frame_info;
struct wl_callback *callback;
CoglOnscreen *onscreen;
} FrameCallbackData;
static void
registry_handle_global_cb (void *data,
struct wl_registry *registry,
uint32_t id,
const char *interface,
uint32_t version)
{
CoglRendererEGL *egl_renderer = (CoglRendererEGL *)data;
CoglRendererWayland *wayland_renderer = egl_renderer->platform;
if (strcmp (interface, "wl_compositor") == 0)
wayland_renderer->wayland_compositor =
wl_registry_bind (registry, id, &wl_compositor_interface, 1);
else if (strcmp(interface, "wl_shell") == 0)
wayland_renderer->wayland_shell =
wl_registry_bind (registry, id, &wl_shell_interface, 1);
}
static void
_cogl_winsys_renderer_disconnect (CoglRenderer *renderer)
{
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererWayland *wayland_renderer = egl_renderer->platform;
if (wayland_renderer->wayland_display)
{
_cogl_poll_renderer_remove_fd (renderer, wayland_renderer->fd);
if (renderer->foreign_wayland_display == NULL)
wl_display_disconnect (wayland_renderer->wayland_display);
}
if (egl_renderer->edpy)
eglTerminate (egl_renderer->edpy);
g_slice_free (CoglRendererWayland, egl_renderer->platform);
g_slice_free (CoglRendererEGL, egl_renderer);
}
static const struct wl_registry_listener registry_listener = {
registry_handle_global_cb,
};
static int64_t
prepare_wayland_display_events (void *user_data)
{
CoglRenderer *renderer = user_data;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererWayland *wayland_renderer = egl_renderer->platform;
int flush_ret;
flush_ret = wl_display_flush (wayland_renderer->wayland_display);
if (flush_ret == -1)
{
/* If the socket buffer became full then we need to wake up the
* main loop once it is writable again */
if (errno == EAGAIN)
{
_cogl_poll_renderer_modify_fd (renderer,
wayland_renderer->fd,
COGL_POLL_FD_EVENT_IN |
COGL_POLL_FD_EVENT_OUT);
}
else if (errno != EINTR)
{
/* If the flush failed for some other reason then it's
* likely that it's going to consistently fail so we'll stop
* waiting on the file descriptor instead of making the
* application take up 100% CPU. FIXME: it would be nice if
* there was some way to report this to the application so
* that it can quit or recover */
_cogl_poll_renderer_remove_fd (renderer, wayland_renderer->fd);
}
}
/* Calling this here is a bit dodgy because Cogl usually tries to
* say that it won't do any event processing until
* cogl_poll_renderer_dispatch is called. However Wayland doesn't
* seem to provide any way to query whether the event queue is empty
* and we would need to do that in order to force the main loop to
* wake up to call it from dispatch. */
wl_display_dispatch_pending (wayland_renderer->wayland_display);
return -1;
}
static void
dispatch_wayland_display_events (void *user_data, int revents)
{
CoglRenderer *renderer = user_data;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererWayland *wayland_renderer = egl_renderer->platform;
if ((revents & COGL_POLL_FD_EVENT_IN))
{
if (wl_display_dispatch (wayland_renderer->wayland_display) == -1 &&
errno != EAGAIN &&
errno != EINTR)
goto socket_error;
}
if ((revents & COGL_POLL_FD_EVENT_OUT))
{
int ret = wl_display_flush (wayland_renderer->wayland_display);
if (ret == -1)
{
if (errno != EAGAIN && errno != EINTR)
goto socket_error;
}
else
{
/* There is no more data to write so we don't need to wake
* up when the write buffer is emptied anymore */
_cogl_poll_renderer_modify_fd (renderer,
wayland_renderer->fd,
COGL_POLL_FD_EVENT_IN);
}
}
return;
socket_error:
/* If there was an error on the wayland socket then it's likely that
* it's going to consistently fail so we'll stop waiting on the file
* descriptor instead of making the application take up 100% CPU.
* FIXME: it would be nice if there was some way to report this to
* the application so that it can quit or recover */
_cogl_poll_renderer_remove_fd (renderer, wayland_renderer->fd);
}
static CoglBool
_cogl_winsys_renderer_connect (CoglRenderer *renderer,
CoglError **error)
{
CoglRendererEGL *egl_renderer;
CoglRendererWayland *wayland_renderer;
renderer->winsys = g_slice_new0 (CoglRendererEGL);
egl_renderer = renderer->winsys;
wayland_renderer = g_slice_new0 (CoglRendererWayland);
egl_renderer->platform = wayland_renderer;
egl_renderer->platform_vtable = &_cogl_winsys_egl_vtable;
/* The EGL API doesn't provide for a way to explicitly select a
* platform when the driver can support multiple. Mesa allows
* selection using an environment variable though so that's what
* we're doing here... */
g_setenv ("EGL_PLATFORM", "wayland", 1);
if (renderer->foreign_wayland_display)
{
wayland_renderer->wayland_display = renderer->foreign_wayland_display;
}
else
{
wayland_renderer->wayland_display = wl_display_connect (NULL);
if (!wayland_renderer->wayland_display)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"Failed to connect wayland display");
goto error;
}
}
wayland_renderer->wayland_registry =
wl_display_get_registry (wayland_renderer->wayland_display);
wl_registry_add_listener (wayland_renderer->wayland_registry,
&registry_listener,
egl_renderer);
/*
* Ensure that that we've received the messages setting up the
* compostor and shell object. This is better than just
* wl_display_iterate since it will always ensure that something
* is available to be read
*/
while (!(wayland_renderer->wayland_compositor &&
wayland_renderer->wayland_shell))
wl_display_roundtrip (wayland_renderer->wayland_display);
egl_renderer->edpy =
eglGetDisplay ((EGLNativeDisplayType) wayland_renderer->wayland_display);
if (!_cogl_winsys_egl_renderer_connect_common (renderer, error))
goto error;
wayland_renderer->fd = wl_display_get_fd (wayland_renderer->wayland_display);
if (renderer->wayland_enable_event_dispatch)
_cogl_poll_renderer_add_fd (renderer,
wayland_renderer->fd,
COGL_POLL_FD_EVENT_IN,
prepare_wayland_display_events,
dispatch_wayland_display_events,
renderer);
return TRUE;
error:
_cogl_winsys_renderer_disconnect (renderer);
return FALSE;
}
static CoglBool
_cogl_winsys_egl_display_setup (CoglDisplay *display,
CoglError **error)
{
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayWayland *wayland_display;
wayland_display = g_slice_new0 (CoglDisplayWayland);
egl_display->platform = wayland_display;
return TRUE;
}
static void
_cogl_winsys_egl_display_destroy (CoglDisplay *display)
{
CoglDisplayEGL *egl_display = display->winsys;
g_slice_free (CoglDisplayWayland, egl_display->platform);
}
static CoglBool
_cogl_winsys_egl_context_created (CoglDisplay *display,
CoglError **error)
{
CoglRenderer *renderer = display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererWayland *wayland_renderer = egl_renderer->platform;
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayWayland *wayland_display = egl_display->platform;
const char *error_message;
wayland_display->wayland_surface =
wl_compositor_create_surface (wayland_renderer->wayland_compositor);
if (!wayland_display->wayland_surface)
{
error_message= "Failed to create a dummy wayland surface";
goto fail;
}
wayland_display->wayland_egl_native_window =
wl_egl_window_create (wayland_display->wayland_surface,
1,
1);
if (!wayland_display->wayland_egl_native_window)
{
error_message= "Failed to create a dummy wayland native egl surface";
goto fail;
}
egl_display->dummy_surface =
eglCreateWindowSurface (egl_renderer->edpy,
egl_display->egl_config,
(EGLNativeWindowType)
wayland_display->wayland_egl_native_window,
NULL);
if (egl_display->dummy_surface == EGL_NO_SURFACE)
{
error_message= "Unable to create dummy window surface";
goto fail;
}
if (!_cogl_winsys_egl_make_current (display,
egl_display->dummy_surface,
egl_display->dummy_surface,
egl_display->egl_context))
{
error_message = "Unable to eglMakeCurrent with dummy surface";
goto fail;
}
return TRUE;
fail:
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"%s", error_message);
return FALSE;
}
static void
_cogl_winsys_egl_cleanup_context (CoglDisplay *display)
{
CoglRenderer *renderer = display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglDisplayEGL *egl_display = display->winsys;
CoglDisplayWayland *wayland_display = egl_display->platform;
if (egl_display->dummy_surface != EGL_NO_SURFACE)
{
eglDestroySurface (egl_renderer->edpy, egl_display->dummy_surface);
egl_display->dummy_surface = EGL_NO_SURFACE;
}
if (wayland_display->wayland_egl_native_window)
{
wl_egl_window_destroy (wayland_display->wayland_egl_native_window);
wayland_display->wayland_egl_native_window = NULL;
}
if (wayland_display->wayland_surface)
{
wl_surface_destroy (wayland_display->wayland_surface);
wayland_display->wayland_surface = NULL;
}
}
static CoglBool
_cogl_winsys_egl_context_init (CoglContext *context,
CoglError **error)
{
context->feature_flags |= COGL_FEATURE_ONSCREEN_MULTIPLE;
COGL_FLAGS_SET (context->features,
COGL_FEATURE_ID_ONSCREEN_MULTIPLE, TRUE);
COGL_FLAGS_SET (context->winsys_features,
COGL_WINSYS_FEATURE_MULTIPLE_ONSCREEN,
TRUE);
COGL_FLAGS_SET (context->winsys_features,
COGL_WINSYS_FEATURE_SYNC_AND_COMPLETE_EVENT,
TRUE);
/* We'll manually handle queueing dirty events when the surface is
* first shown or when it is resized. Note that this is slightly
* different from the emulated behaviour that CoglFramebuffer would
* provide if we didn't set this flag because we want to emit the
* event on show instead of on allocation. The Wayland protocol
* delays setting the surface type until the next buffer is attached
* so attaching a buffer before setting the type would not cause
* anything to be displayed */
context->private_feature_flags |= COGL_PRIVATE_FEATURE_DIRTY_EVENTS;
return TRUE;
}
static CoglBool
_cogl_winsys_egl_onscreen_init (CoglOnscreen *onscreen,
EGLConfig egl_config,
CoglError **error)
{
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenWayland *wayland_onscreen;
CoglFramebuffer *framebuffer = COGL_FRAMEBUFFER (onscreen);
CoglContext *context = framebuffer->context;
CoglRenderer *renderer = context->display->renderer;
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererWayland *wayland_renderer = egl_renderer->platform;
wayland_onscreen = g_slice_new0 (CoglOnscreenWayland);
egl_onscreen->platform = wayland_onscreen;
_cogl_list_init (&wayland_onscreen->frame_callbacks);
if (onscreen->foreign_surface)
wayland_onscreen->wayland_surface = onscreen->foreign_surface;
else
wayland_onscreen->wayland_surface =
wl_compositor_create_surface (wayland_renderer->wayland_compositor);
if (!wayland_onscreen->wayland_surface)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_ONSCREEN,
"Error while creating wayland surface for CoglOnscreen");
return FALSE;
}
wayland_onscreen->wayland_egl_native_window =
wl_egl_window_create (wayland_onscreen->wayland_surface,
cogl_framebuffer_get_width (framebuffer),
cogl_framebuffer_get_height (framebuffer));
if (!wayland_onscreen->wayland_egl_native_window)
{
_cogl_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_ONSCREEN,
"Error while creating wayland egl native window "
"for CoglOnscreen");
return FALSE;
}
egl_onscreen->egl_surface =
eglCreateWindowSurface (egl_renderer->edpy,
egl_config,
(EGLNativeWindowType)
wayland_onscreen->wayland_egl_native_window,
NULL);
if (!onscreen->foreign_surface)
wayland_onscreen->wayland_shell_surface =
wl_shell_get_shell_surface (wayland_renderer->wayland_shell,
wayland_onscreen->wayland_surface);
return TRUE;
}
static void
free_frame_callback_data (FrameCallbackData *callback_data)
{
cogl_object_unref (callback_data->frame_info);
wl_callback_destroy (callback_data->callback);
_cogl_list_remove (&callback_data->link);
g_slice_free (FrameCallbackData, callback_data);
}
static void
_cogl_winsys_egl_onscreen_deinit (CoglOnscreen *onscreen)
{
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenWayland *wayland_onscreen = egl_onscreen->platform;
FrameCallbackData *frame_callback_data, *tmp;
_cogl_list_for_each_safe (frame_callback_data,
tmp,
&wayland_onscreen->frame_callbacks,
link)
free_frame_callback_data (frame_callback_data);
if (wayland_onscreen->wayland_egl_native_window)
{
wl_egl_window_destroy (wayland_onscreen->wayland_egl_native_window);
wayland_onscreen->wayland_egl_native_window = NULL;
}
if (!onscreen->foreign_surface)
{
/* NB: The wayland protocol docs explicitly state that
* "wl_shell_surface_destroy() must be called before destroying
* the wl_surface object." ... */
if (wayland_onscreen->wayland_shell_surface)
{
wl_shell_surface_destroy (wayland_onscreen->wayland_shell_surface);
wayland_onscreen->wayland_shell_surface = NULL;
}
if (wayland_onscreen->wayland_surface)
{
wl_surface_destroy (wayland_onscreen->wayland_surface);
wayland_onscreen->wayland_surface = NULL;
}
}
g_slice_free (CoglOnscreenWayland, wayland_onscreen);
}
static void
flush_pending_resize (CoglOnscreen *onscreen)
{
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenWayland *wayland_onscreen = egl_onscreen->platform;
if (wayland_onscreen->has_pending)
{
wl_egl_window_resize (wayland_onscreen->wayland_egl_native_window,
wayland_onscreen->pending_width,
wayland_onscreen->pending_height,
wayland_onscreen->pending_dx,
wayland_onscreen->pending_dy);
_cogl_framebuffer_winsys_update_size (COGL_FRAMEBUFFER (onscreen),
wayland_onscreen->pending_width,
wayland_onscreen->pending_height);
_cogl_onscreen_queue_full_dirty (onscreen);
wayland_onscreen->pending_dx = 0;
wayland_onscreen->pending_dy = 0;
wayland_onscreen->has_pending = FALSE;
}
}
static void
frame_cb (void *data,
struct wl_callback *callback,
uint32_t time)
{
FrameCallbackData *callback_data = data;
CoglFrameInfo *info = callback_data->frame_info;
CoglOnscreen *onscreen = callback_data->onscreen;
g_assert (callback_data->callback == callback);
_cogl_onscreen_queue_event (onscreen, COGL_FRAME_EVENT_SYNC, info);
_cogl_onscreen_queue_event (onscreen, COGL_FRAME_EVENT_COMPLETE, info);
free_frame_callback_data (callback_data);
}
static const struct wl_callback_listener
frame_listener =
{
frame_cb
};
static void
_cogl_winsys_onscreen_swap_buffers_with_damage (CoglOnscreen *onscreen,
const int *rectangles,
int n_rectangles)
{
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenWayland *wayland_onscreen = egl_onscreen->platform;
FrameCallbackData *frame_callback_data = g_slice_new (FrameCallbackData);
flush_pending_resize (onscreen);
/* Before calling the winsys function,
* cogl_onscreen_swap_buffers_with_damage() will have pushed the
* frame info object onto the end of the pending frames. We can grab
* it out of the queue now because we don't care about the order and
* we will just directly queue the event corresponding to the exact
* frame that Wayland reports as completed. This will steal the
* reference */
frame_callback_data->frame_info =
g_queue_pop_tail (&onscreen->pending_frame_infos);
frame_callback_data->onscreen = onscreen;
frame_callback_data->callback =
wl_surface_frame (wayland_onscreen->wayland_surface);
wl_callback_add_listener (frame_callback_data->callback,
&frame_listener,
frame_callback_data);
_cogl_list_insert (&wayland_onscreen->frame_callbacks,
&frame_callback_data->link);
parent_vtable->onscreen_swap_buffers_with_damage (onscreen,
rectangles,
n_rectangles);
}
static void
_cogl_winsys_onscreen_set_visibility (CoglOnscreen *onscreen,
CoglBool visibility)
{
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenWayland *wayland_onscreen = egl_onscreen->platform;
/* The first time the onscreen is shown we will set it to toplevel
* so that it will appear on the screen. If the surface is foreign
* then we won't have the shell surface and we'll just let the
* application deal with setting the surface type. */
if (visibility &&
wayland_onscreen->wayland_shell_surface &&
!wayland_onscreen->shell_surface_type_set)
{
wl_shell_surface_set_toplevel (wayland_onscreen->wayland_shell_surface);
wayland_onscreen->shell_surface_type_set = TRUE;
_cogl_onscreen_queue_full_dirty (onscreen);
}
/* FIXME: We should also do something here to hide the surface when
* visilibity == FALSE. It sounds like there are currently ongoing
* discussions about adding support for hiding surfaces in the
* Wayland protocol so we might as well wait until then to add that
* here. */
}
void
cogl_wayland_renderer_set_foreign_display (CoglRenderer *renderer,
struct wl_display *display)
{
_COGL_RETURN_IF_FAIL (cogl_is_renderer (renderer));
/* NB: Renderers are considered immutable once connected */
_COGL_RETURN_IF_FAIL (!renderer->connected);
renderer->foreign_wayland_display = display;
}
void
cogl_wayland_renderer_set_event_dispatch_enabled (CoglRenderer *renderer,
CoglBool enable)
{
_COGL_RETURN_IF_FAIL (cogl_is_renderer (renderer));
/* NB: Renderers are considered immutable once connected */
_COGL_RETURN_IF_FAIL (!renderer->connected);
renderer->wayland_enable_event_dispatch = enable;
}
struct wl_display *
cogl_wayland_renderer_get_display (CoglRenderer *renderer)
{
_COGL_RETURN_VAL_IF_FAIL (cogl_is_renderer (renderer), NULL);
if (renderer->foreign_wayland_display)
return renderer->foreign_wayland_display;
else if (renderer->connected)
{
CoglRendererEGL *egl_renderer = renderer->winsys;
CoglRendererWayland *wayland_renderer = egl_renderer->platform;
return wayland_renderer->wayland_display;
}
else
return NULL;
}
struct wl_surface *
cogl_wayland_onscreen_get_surface (CoglOnscreen *onscreen)
{
CoglOnscreenEGL *egl_onscreen;
CoglOnscreenWayland *wayland_onscreen;
cogl_framebuffer_allocate (COGL_FRAMEBUFFER (onscreen), NULL);
egl_onscreen = onscreen->winsys;
wayland_onscreen = egl_onscreen->platform;
return wayland_onscreen->wayland_surface;
}
struct wl_shell_surface *
cogl_wayland_onscreen_get_shell_surface (CoglOnscreen *onscreen)
{
CoglOnscreenEGL *egl_onscreen;
CoglOnscreenWayland *wayland_onscreen;
cogl_framebuffer_allocate (COGL_FRAMEBUFFER (onscreen), NULL);
egl_onscreen = onscreen->winsys;
wayland_onscreen = egl_onscreen->platform;
return wayland_onscreen->wayland_shell_surface;
}
void
cogl_wayland_onscreen_set_foreign_surface (CoglOnscreen *onscreen,
struct wl_surface *surface)
{
CoglFramebuffer *fb;
fb = COGL_FRAMEBUFFER (onscreen);
_COGL_RETURN_IF_FAIL (!fb->allocated);
onscreen->foreign_surface = surface;
}
void
cogl_wayland_onscreen_resize (CoglOnscreen *onscreen,
int width,
int height,
int offset_x,
int offset_y)
{
CoglFramebuffer *fb;
fb = COGL_FRAMEBUFFER (onscreen);
if (fb->allocated)
{
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
CoglOnscreenWayland *wayland_onscreen = egl_onscreen->platform;
if (cogl_framebuffer_get_width (fb) != width ||
cogl_framebuffer_get_height (fb) != height ||
offset_x ||
offset_y)
{
wayland_onscreen->pending_width = width;
wayland_onscreen->pending_height = height;
wayland_onscreen->pending_dx += offset_x;
wayland_onscreen->pending_dy += offset_y;
wayland_onscreen->has_pending = TRUE;
/* If nothing has been drawn to the framebuffer since the
* last swap then wl_egl_window_resize will take effect
* immediately. Otherwise it might not take effect until the
* next swap, depending on the version of Mesa. To keep
* consistent behaviour we'll delay the resize until the
* next swap unless we're sure nothing has been drawn */
if (!fb->mid_scene)
flush_pending_resize (onscreen);
}
}
else
_cogl_framebuffer_winsys_update_size (fb, width, height);
}
static const CoglWinsysEGLVtable
_cogl_winsys_egl_vtable =
{
.display_setup = _cogl_winsys_egl_display_setup,
.display_destroy = _cogl_winsys_egl_display_destroy,
.context_created = _cogl_winsys_egl_context_created,
.cleanup_context = _cogl_winsys_egl_cleanup_context,
.context_init = _cogl_winsys_egl_context_init,
.onscreen_init = _cogl_winsys_egl_onscreen_init,
.onscreen_deinit = _cogl_winsys_egl_onscreen_deinit
};
const CoglWinsysVtable *
_cogl_winsys_egl_wayland_get_vtable (void)
{
static CoglBool vtable_inited = FALSE;
static CoglWinsysVtable vtable;
if (!vtable_inited)
{
/* The EGL_WAYLAND winsys is a subclass of the EGL winsys so we
start by copying its vtable */
parent_vtable = _cogl_winsys_egl_get_vtable ();
vtable = *parent_vtable;
vtable.id = COGL_WINSYS_ID_EGL_WAYLAND;
vtable.name = "EGL_WAYLAND";
vtable.renderer_connect = _cogl_winsys_renderer_connect;
vtable.renderer_disconnect = _cogl_winsys_renderer_disconnect;
vtable.onscreen_swap_buffers_with_damage =
_cogl_winsys_onscreen_swap_buffers_with_damage;
vtable.onscreen_set_visibility =
_cogl_winsys_onscreen_set_visibility;
vtable_inited = TRUE;
}
return &vtable;
}
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