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xserver/hw/xwayland/xwayland-present.c

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/*
* Copyright © 2018 Roman Gilg
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of the
* copyright holders not be used in advertising or publicity
* pertaining to distribution of the software without specific,
* written prior permission. The copyright holders make no
* representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied
* warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
#include <xwayland-config.h>
#include <compint.h>
#ifdef XWL_HAS_GLAMOR
#include <glamor.h>
#endif
#include <windowstr.h>
#include <present.h>
#ifdef DRI3
#include <sys/eventfd.h>
#endif /* DRI3 */
#include "xwayland-present.h"
#include "xwayland-screen.h"
#include "xwayland-shm.h"
#include "xwayland-window.h"
#include "xwayland-window-buffers.h"
#include "xwayland-pixmap.h"
#include "tearing-control-v1-client-protocol.h"
#include "linux-drm-syncobj-v1-client-protocol.h"
#define XWL_PRESENT_CAPS PresentCapabilityAsync | PresentCapabilityAsyncMayTear
/*
* When not flipping let Present copy with 60fps.
* When flipping wait on frame_callback, otherwise
* the surface is not visible, in this case update
* with long interval.
*/
#define TIMER_LEN_COPY 17 // ~60fps
#define TIMER_LEN_FLIP 1000 // 1fps
static DevPrivateKeyRec xwl_present_window_private_key;
static struct xwl_present_window *
xwl_present_window_priv(WindowPtr window)
{
return dixGetPrivate(&window->devPrivates,
&xwl_present_window_private_key);
}
static struct xwl_present_window *
xwl_present_window_get_priv(WindowPtr window)
{
struct xwl_present_window *xwl_present_window = xwl_present_window_priv(window);
if (xwl_present_window == NULL) {
xwl_present_window = calloc (1, sizeof (struct xwl_present_window));
if (!xwl_present_window)
return NULL;
xwl_present_window->window = window;
xwl_present_window->msc = 1;
xwl_present_window->ust = GetTimeInMicros();
xorg_list_init(&xwl_present_window->frame_callback_list);
xorg_list_init(&xwl_present_window->wait_list);
xorg_list_init(&xwl_present_window->flip_queue);
xorg_list_init(&xwl_present_window->idle_queue);
xorg_list_init(&xwl_present_window->blocked_queue);
dixSetPrivate(&window->devPrivates,
&xwl_present_window_private_key,
xwl_present_window);
}
return xwl_present_window;
}
static struct xwl_present_event *
xwl_present_event_from_id(WindowPtr present_window, uint64_t event_id)
{
present_window_priv_ptr window_priv = present_get_window_priv(present_window, TRUE);
struct xwl_present_event *event;
xorg_list_for_each_entry(event, &window_priv->vblank, vblank.window_list) {
if (event->vblank.event_id == event_id)
return event;
}
return NULL;
}
static struct xwl_present_event *
xwl_present_event_from_vblank(present_vblank_ptr vblank)
{
return container_of(vblank, struct xwl_present_event, vblank);
}
static Bool entered_for_each_frame_callback;
Bool
xwl_present_entered_for_each_frame_callback(void)
{
return entered_for_each_frame_callback;
}
void
xwl_present_for_each_frame_callback(struct xwl_window *xwl_window,
void iter_func(struct xwl_present_window *))
{
struct xwl_present_window *xwl_present_window, *tmp;
if (entered_for_each_frame_callback)
FatalError("Nested xwl_present_for_each_frame_callback call");
entered_for_each_frame_callback = TRUE;
xorg_list_for_each_entry_safe(xwl_present_window, tmp,
&xwl_window->frame_callback_list,
frame_callback_list)
iter_func(xwl_present_window);
entered_for_each_frame_callback = FALSE;
}
static void
xwl_present_free_timer(struct xwl_present_window *xwl_present_window)
{
TimerFree(xwl_present_window->frame_timer);
xwl_present_window->frame_timer = NULL;
xwl_present_window->timer_armed = 0;
}
static CARD32
xwl_present_timer_callback(OsTimerPtr timer,
CARD32 time,
void *arg);
static present_vblank_ptr
xwl_present_get_pending_flip(struct xwl_present_window *xwl_present_window)
{
present_vblank_ptr flip_pending;
if (xorg_list_is_empty(&xwl_present_window->flip_queue))
return NULL;
flip_pending = xorg_list_first_entry(&xwl_present_window->flip_queue, present_vblank_rec,
event_queue);
if (flip_pending->queued)
return NULL;
return flip_pending;
}
static inline Bool
xwl_present_has_pending_events(struct xwl_present_window *xwl_present_window)
{
present_vblank_ptr flip_pending = xwl_present_get_pending_flip(xwl_present_window);
return (flip_pending && flip_pending->sync_flip) ||
!xorg_list_is_empty(&xwl_present_window->wait_list) ||
!xorg_list_is_empty(&xwl_present_window->blocked_queue);
}
void
xwl_present_reset_timer(struct xwl_present_window *xwl_present_window)
{
if (xwl_present_has_pending_events(xwl_present_window)) {
struct xwl_window *xwl_window = xwl_window_from_window(xwl_present_window->window);
CARD32 now = GetTimeInMillis();
CARD32 timeout;
if (xwl_window && xwl_window->frame_callback &&
!xorg_list_is_empty(&xwl_present_window->frame_callback_list))
timeout = TIMER_LEN_FLIP;
else
timeout = TIMER_LEN_COPY;
/* Make sure the timer callback runs if at least a second has passed
* since we first armed the timer. This can happen e.g. if the Wayland
* compositor doesn't send a pending frame event, e.g. because the
* Wayland surface isn't visible anywhere.
*/
if (xwl_present_window->timer_armed) {
if ((int)(now - xwl_present_window->timer_armed) > 1000) {
xwl_present_timer_callback(xwl_present_window->frame_timer, now,
xwl_present_window);
return;
}
} else {
xwl_present_window->timer_armed = now;
}
xwl_present_window->frame_timer = TimerSet(xwl_present_window->frame_timer,
0, timeout,
&xwl_present_timer_callback,
xwl_present_window);
} else {
xwl_present_free_timer(xwl_present_window);
}
}
static void
xwl_present_execute(present_vblank_ptr vblank, uint64_t ust, uint64_t crtc_msc);
static int
xwl_present_queue_vblank(ScreenPtr screen,
WindowPtr present_window,
RRCrtcPtr crtc,
uint64_t event_id,
uint64_t msc);
static uint32_t
xwl_present_query_capabilities(present_screen_priv_ptr screen_priv)
{
struct xwl_screen *xwl_screen = xwl_screen_get(screen_priv->pScreen);
return xwl_screen->present_capabilities;
}
static int
xwl_present_get_ust_msc(ScreenPtr screen,
WindowPtr present_window,
uint64_t *ust,
uint64_t *msc)
{
struct xwl_present_window *xwl_present_window = xwl_present_window_get_priv(present_window);
if (!xwl_present_window)
return BadAlloc;
*ust = xwl_present_window->ust;
*msc = xwl_present_window->msc;
return Success;
}
static uint64_t
xwl_present_get_exec_msc(uint32_t options, uint64_t target_msc)
{
/* Synchronous Xwayland presentations always complete (at least) one frame after they
* are executed
*/
if (options & PresentOptionAsyncMayTear)
return target_msc;
return target_msc - 1;
}
/*
* When the wait fence or previous flip is completed, it's time
* to re-try the request
*/
static void
xwl_present_re_execute(present_vblank_ptr vblank)
{
struct xwl_present_event *event = xwl_present_event_from_vblank(vblank);
uint64_t ust = 0, crtc_msc = 0;
(void) xwl_present_get_ust_msc(vblank->screen, vblank->window, &ust, &crtc_msc);
/* re-compute target / exec msc */
vblank->target_msc = present_get_target_msc(0, crtc_msc,
event->divisor,
event->remainder,
event->options);
vblank->exec_msc = xwl_present_get_exec_msc(event->options,
vblank->target_msc);
vblank->queued = TRUE;
if (msc_is_after(vblank->exec_msc, crtc_msc) &&
xwl_present_queue_vblank(vblank->screen, vblank->window,
vblank->crtc,
vblank->event_id,
vblank->exec_msc) == Success) {
return;
}
xwl_present_execute(vblank, ust, crtc_msc);
}
static void
xwl_present_flip_try_ready(struct xwl_present_window *xwl_present_window)
{
present_vblank_ptr vblank;
xorg_list_for_each_entry(vblank, &xwl_present_window->flip_queue, event_queue) {
if (vblank->queued) {
xwl_present_re_execute(vblank);
return;
}
}
}
static void
xwl_present_release_pixmap(struct xwl_present_event *event)
{
if (!event->pixmap)
return;
xwl_pixmap_del_buffer_release_cb(event->pixmap);
dixDestroyPixmap(event->pixmap, event->pixmap->drawable.id);
event->pixmap = NULL;
}
static void
xwl_present_free_event(struct xwl_present_event *event)
{
xwl_present_release_pixmap(event);
xorg_list_del(&event->vblank.event_queue);
present_vblank_destroy(&event->vblank);
}
static void
xwl_present_free_idle_vblank(present_vblank_ptr vblank)
{
#if defined(XWL_HAS_GLAMOR) && defined(DRI3)
if (vblank->release_syncobj) {
/* transfer implicit fence to release syncobj */
int fence_fd = xwl_glamor_dmabuf_export_sync_file(vblank->pixmap);
vblank->release_syncobj->import_fence(vblank->release_syncobj,
vblank->release_point,
fence_fd);
} else
#endif /* defined(XWL_HAS_GLAMOR) && defined(DRI3) */
present_pixmap_idle(vblank->pixmap, vblank->window,
vblank->serial, vblank->idle_fence);
xwl_present_free_event(xwl_present_event_from_vblank(vblank));
}
static WindowPtr
xwl_present_toplvl_pixmap_window(WindowPtr window)
{
ScreenPtr screen = window->drawable.pScreen;
PixmapPtr pixmap = (*screen->GetWindowPixmap)(window);
WindowPtr w = window;
WindowPtr next_w;
while(w->parent) {
next_w = w->parent;
if ( (*screen->GetWindowPixmap)(next_w) != pixmap) {
break;
}
w = next_w;
}
return w;
}
static void
xwl_present_flips_stop(WindowPtr window)
{
struct xwl_present_window *xwl_present_window = xwl_present_window_priv(window);
present_vblank_ptr vblank, tmp;
/* Change back to the fast refresh rate */
xwl_present_reset_timer(xwl_present_window);
/* Free any left over idle vblanks */
xorg_list_for_each_entry_safe(vblank, tmp, &xwl_present_window->idle_queue, event_queue)
xwl_present_free_idle_vblank(vblank);
if (xwl_present_window->flip_active) {
struct xwl_present_event *event;
vblank = xwl_present_window->flip_active;
event = xwl_present_event_from_vblank(vblank);
if (event->pixmap)
xwl_present_free_idle_vblank(vblank);
else
xwl_present_free_event(event);
xwl_present_window->flip_active = NULL;
}
xwl_present_flip_try_ready(xwl_present_window);
}
static void
xwl_present_flip_notify_vblank(present_vblank_ptr vblank, uint64_t ust, uint64_t crtc_msc)
{
WindowPtr window = vblank->window;
#ifdef DRI3
struct xwl_screen *xwl_screen = xwl_screen_get(window->drawable.pScreen);
#endif /* DRI3 */
struct xwl_present_window *xwl_present_window = xwl_present_window_priv(window);
uint8_t mode = PresentCompleteModeFlip;
DebugPresent(("\tn %" PRIu64 " %p %" PRIu64 " %" PRIu64 ": %08" PRIx32 " -> %08" PRIx32 "\n",
vblank->event_id, vblank, vblank->exec_msc, vblank->target_msc,
vblank->pixmap ? vblank->pixmap->drawable.id : 0,
vblank->window ? vblank->window->drawable.id : 0));
assert (&vblank->event_queue == xwl_present_window->flip_queue.next);
xorg_list_del(&vblank->event_queue);
if (xwl_present_window->flip_active) {
struct xwl_present_event *event =
xwl_present_event_from_vblank(xwl_present_window->flip_active);
if (!event->pixmap
#ifdef DRI3
/* If this flip used explicit sync, we won't get a release event */
|| (xwl_screen->explicit_sync && vblank->release_syncobj)
#endif /* DRI3 */
) {
xwl_present_free_event(event);
} else
/* Put the previous flip in the idle_queue and wait for further notice from
* the Wayland compositor
*/
xorg_list_append(&xwl_present_window->flip_active->event_queue, &xwl_present_window->idle_queue);
}
xwl_present_window->flip_active = vblank;
if (vblank->reason == PRESENT_FLIP_REASON_BUFFER_FORMAT)
mode = PresentCompleteModeSuboptimalCopy;
present_vblank_notify(vblank, PresentCompleteKindPixmap, mode, ust, crtc_msc);
if (vblank->abort_flip)
xwl_present_flips_stop(window);
xwl_present_flip_try_ready(xwl_present_window);
}
static void
xwl_present_update_window_crtc(present_window_priv_ptr window_priv, RRCrtcPtr crtc, uint64_t new_msc)
{
/* Crtc unchanged, no offset. */
if (crtc == window_priv->crtc)
return;
/* No crtc earlier to offset against, just set the crtc. */
if (window_priv->crtc == PresentCrtcNeverSet) {
window_priv->msc_offset = 0;
window_priv->crtc = crtc;
return;
}
/* In window-mode the last correct msc-offset is always kept
* in window-priv struct because msc is saved per window and
* not per crtc as in screen-mode.
*/
window_priv->msc_offset += new_msc - window_priv->msc;
window_priv->crtc = crtc;
}
void
xwl_present_cleanup(WindowPtr window)
{
struct xwl_present_window *xwl_present_window = xwl_present_window_priv(window);
present_window_priv_ptr window_priv = present_window_priv(window);
struct xwl_present_event *event, *tmp;
if (!xwl_present_window)
return;
xorg_list_del(&xwl_present_window->frame_callback_list);
if (xwl_present_window->sync_callback) {
wl_callback_destroy(xwl_present_window->sync_callback);
xwl_present_window->sync_callback = NULL;
}
if (window_priv) {
/* Clear remaining events */
xorg_list_for_each_entry_safe(event, tmp, &window_priv->vblank, vblank.window_list)
xwl_present_free_event(event);
}
/* Clear timer */
xwl_present_free_timer(xwl_present_window);
TimerFree(xwl_present_window->unredirect_timer);
/* Remove from privates so we don't try to access it later */
dixSetPrivate(&window->devPrivates,
&xwl_present_window_private_key,
NULL);
free(xwl_present_window);
}
static void
xwl_present_buffer_release(void *data)
{
struct xwl_present_window *xwl_present_window;
struct xwl_present_event *event = data;
present_vblank_ptr vblank;
if (!event)
return;
vblank = &event->vblank;
#if defined(XWL_HAS_GLAMOR) && defined(DRI3)
if (vblank->release_syncobj) {
/* transfer implicit fence to release syncobj */
int fence_fd = xwl_glamor_dmabuf_export_sync_file(vblank->pixmap);
vblank->release_syncobj->import_fence(vblank->release_syncobj,
vblank->release_point,
fence_fd);
} else
#endif /* defined(XWL_HAS_GLAMOR) && defined(DRI3) */
present_pixmap_idle(vblank->pixmap, vblank->window, vblank->serial, vblank->idle_fence);
xwl_present_window = xwl_present_window_priv(vblank->window);
if (xwl_present_window->flip_active == vblank ||
xwl_present_get_pending_flip(xwl_present_window) == vblank)
xwl_present_release_pixmap(event);
else
xwl_present_free_event(event);
}
static void
xwl_present_msc_bump(struct xwl_present_window *xwl_present_window)
{
present_vblank_ptr flip_pending = xwl_present_get_pending_flip(xwl_present_window);
uint64_t msc = ++xwl_present_window->msc;
present_vblank_ptr vblank, tmp;
xwl_present_window->ust = GetTimeInMicros();
xwl_present_window->timer_armed = 0;
if (flip_pending && flip_pending->sync_flip)
xwl_present_flip_notify_vblank(flip_pending, xwl_present_window->ust, msc);
xorg_list_for_each_entry_safe(vblank, tmp, &xwl_present_window->wait_list, event_queue) {
if (vblank->exec_msc <= msc) {
DebugPresent(("\te %" PRIu64 " ust %" PRIu64 " msc %" PRIu64 "\n",
vblank->event_id, xwl_present_window->ust, msc));
xwl_present_execute(vblank, xwl_present_window->ust, msc);
}
}
}
static CARD32
xwl_present_timer_callback(OsTimerPtr timer,
CARD32 time,
void *arg)
{
struct xwl_present_window *xwl_present_window = arg;
/* If we were expecting a frame callback for this window, it didn't arrive
* in a second. Stop listening to it to avoid double-bumping the MSC
*/
xorg_list_del(&xwl_present_window->frame_callback_list);
xwl_present_msc_bump(xwl_present_window);
xwl_present_reset_timer(xwl_present_window);
return 0;
}
void
xwl_present_frame_callback(struct xwl_present_window *xwl_present_window)
{
xorg_list_del(&xwl_present_window->frame_callback_list);
xwl_present_msc_bump(xwl_present_window);
/* we do not need the timer anymore for this frame,
* reset it for potentially the next one
*/
xwl_present_reset_timer(xwl_present_window);
}
static void
xwl_present_sync_callback(void *data,
struct wl_callback *callback,
uint32_t time)
{
present_vblank_ptr vblank = data;
struct xwl_present_window *xwl_present_window = xwl_present_window_get_priv(vblank->window);
wl_callback_destroy(xwl_present_window->sync_callback);
xwl_present_window->sync_callback = NULL;
xwl_present_flip_notify_vblank(vblank, xwl_present_window->ust, xwl_present_window->msc);
}
static const struct wl_callback_listener xwl_present_sync_listener = {
xwl_present_sync_callback
};
static RRCrtcPtr
xwl_present_get_crtc(present_screen_priv_ptr screen_priv,
WindowPtr present_window)
{
struct xwl_present_window *xwl_present_window = xwl_present_window_get_priv(present_window);
rrScrPrivPtr rr_private;
if (xwl_present_window == NULL)
return NULL;
rr_private = rrGetScrPriv(present_window->drawable.pScreen);
if (rr_private->numCrtcs == 0)
return NULL;
return rr_private->crtcs[0];
}
/*
* Queue an event to report back to the Present extension when the specified
* MSC has passed
*/
static int
xwl_present_queue_vblank(ScreenPtr screen,
WindowPtr present_window,
RRCrtcPtr crtc,
uint64_t event_id,
uint64_t msc)
{
struct xwl_present_window *xwl_present_window = xwl_present_window_get_priv(present_window);
struct xwl_window *xwl_window = xwl_window_from_window(present_window);
struct xwl_present_event *event = xwl_present_event_from_id(present_window, event_id);
if (!event) {
ErrorF("present: Error getting event\n");
return BadImplementation;
}
event->vblank.exec_msc = msc;
xorg_list_del(&event->vblank.event_queue);
xorg_list_append(&event->vblank.event_queue, &xwl_present_window->wait_list);
/* Hook up to frame callback */
if (xwl_window &&
xorg_list_is_empty(&xwl_present_window->frame_callback_list)) {
xorg_list_add(&xwl_present_window->frame_callback_list,
&xwl_window->frame_callback_list);
}
if ((xwl_window && xwl_window->frame_callback) ||
!xwl_present_window->frame_timer)
xwl_present_reset_timer(xwl_present_window);
return Success;
}
/*
* Remove a pending vblank event so that it is not reported
* to the extension
*/
static void
xwl_present_abort_vblank(ScreenPtr screen,
WindowPtr present_window,
RRCrtcPtr crtc,
uint64_t event_id,
uint64_t msc)
{
static Bool called;
if (called)
return;
/* xwl_present_cleanup should have cleaned up everything,
* present_free_window_vblank shouldn't need to call this.
*/
ErrorF("Unexpected call to %s:\n", __func__);
xorg_backtrace();
}
static void
xwl_present_flush(WindowPtr window)
{
#ifdef XWL_HAS_GLAMOR
ScreenPtr screen = window->drawable.pScreen;
struct xwl_screen *xwl_screen = xwl_screen_get(screen);
if (xwl_screen->glamor)
glamor_block_handler(screen);
#endif
}
static void
xwl_present_maybe_set_reason(struct xwl_window *xwl_window, PresentFlipReason *reason)
{
struct xwl_screen *xwl_screen = xwl_window->xwl_screen;
if (!reason || xwl_screen->dmabuf_protocol_version < 4)
return;
if (xwl_window->feedback.unprocessed_feedback_pending) {
xwl_window->feedback.unprocessed_feedback_pending = 0;
*reason = PRESENT_FLIP_REASON_BUFFER_FORMAT;
}
if (xwl_screen->default_feedback.unprocessed_feedback_pending) {
xwl_screen->default_feedback.unprocessed_feedback_pending = 0;
*reason = PRESENT_FLIP_REASON_BUFFER_FORMAT;
}
}
static int
xwl_present_flush_fenced(WindowPtr window)
{
int fence = -1;
#ifdef XWL_HAS_GLAMOR
struct xwl_screen *xwl_screen = xwl_screen_get(window->drawable.pScreen);
fence = xwl_glamor_get_fence(xwl_screen);
#endif /* XWL_HAS_GLAMOR */
xwl_present_flush(window);
return fence;
}
static Bool
xwl_present_check_flip(RRCrtcPtr crtc,
WindowPtr present_window,
PixmapPtr pixmap,
Bool sync_flip,
RegionPtr valid,
int16_t x_off,
int16_t y_off,
PresentFlipReason *reason)
{
WindowPtr toplvl_window = xwl_present_toplvl_pixmap_window(present_window);
struct xwl_window *xwl_window = xwl_window_from_window(present_window);
ScreenPtr screen = pixmap->drawable.pScreen;
if (reason)
*reason = PRESENT_FLIP_REASON_UNKNOWN;
if (!xwl_window)
return FALSE;
xwl_present_maybe_set_reason(xwl_window, reason);
if (!crtc)
return FALSE;
/* Source pixmap must align with window exactly */
if (x_off || y_off)
return FALSE;
/* Valid area must contain window (for simplicity for now just never flip when one is set). */
if (valid)
return FALSE;
/* Flip pixmap must have same dimensions as window */
if (present_window->drawable.width != pixmap->drawable.width ||
present_window->drawable.height != pixmap->drawable.height)
return FALSE;
if (!xwl_pixmap_get_wl_buffer(pixmap))
return FALSE;
/* Window must be same region as toplevel window */
if ( !RegionEqual(&present_window->winSize, &toplvl_window->winSize) )
return FALSE;
/* Can't flip if window clipped by children */
if (!RegionEqual(&present_window->clipList, &present_window->winSize))
return FALSE;
/* Can't flip if the window pixmap doesn't match the xwl_window parent
* window's, e.g. because a client redirected this window or one of its
* parents.
*/
if (screen->GetWindowPixmap(xwl_window->surface_window) != screen->GetWindowPixmap(present_window))
return FALSE;
/*
* We currently only allow flips of windows, that have the same
* dimensions as their xwl_window parent window. For the case of
* different sizes subsurfaces are presumably the way forward.
*/
if (!RegionEqual(&xwl_window->toplevel->winSize, &present_window->winSize))
return FALSE;
#ifdef XWL_HAS_GLAMOR
if (!xwl_glamor_supports_implicit_sync(xwl_window->xwl_screen) &&
!xwl_window->xwl_screen->explicit_sync)
return FALSE;
if (xwl_window->xwl_screen->glamor &&
!xwl_glamor_check_flip(present_window, pixmap))
return FALSE;
#endif /* XWL_HAS_GLAMOR */
return TRUE;
}
/*
* 'window' is being reconfigured. Check to see if it is involved
* in flipping and clean up as necessary.
*/
static void
xwl_present_check_flip_window (WindowPtr window)
{
struct xwl_present_window *xwl_present_window = xwl_present_window_priv(window);
present_window_priv_ptr window_priv = present_window_priv(window);
present_vblank_ptr flip_pending;
present_vblank_ptr flip_active;
present_vblank_ptr vblank;
PresentFlipReason reason;
/* If this window hasn't ever been used with Present, it can't be
* flipping
*/
if (!xwl_present_window || !window_priv)
return;
flip_pending = xwl_present_get_pending_flip(xwl_present_window);
flip_active = xwl_present_window->flip_active;
if (flip_pending) {
if (!xwl_present_check_flip(flip_pending->crtc, flip_pending->window, flip_pending->pixmap,
flip_pending->sync_flip, flip_pending->valid, 0, 0, NULL))
flip_pending->abort_flip = TRUE;
} else if (flip_active) {
if (!xwl_present_check_flip(flip_active->crtc, flip_active->window, flip_active->pixmap,
flip_active->sync_flip, flip_active->valid, 0, 0, NULL))
xwl_present_flips_stop(window);
}
/* Now check any queued vblanks */
xorg_list_for_each_entry(vblank, &window_priv->vblank, window_list) {
if (vblank->queued && vblank->flip &&
!xwl_present_check_flip(vblank->crtc, window, vblank->pixmap,
vblank->sync_flip, vblank->valid, 0, 0, &reason)) {
vblank->flip = FALSE;
vblank->reason = reason;
}
}
}
/*
* Clean up any pending or current flips for this window
*/
static void
xwl_present_clear_window_flip(WindowPtr window)
{
/* xwl_present_cleanup cleaned up everything */
}
static Bool
xwl_present_flip(present_vblank_ptr vblank, RegionPtr damage)
{
WindowPtr present_window = vblank->window;
PixmapPtr pixmap = vblank->pixmap;
struct xwl_window *xwl_window = xwl_window_from_window(present_window);
struct xwl_present_window *xwl_present_window = xwl_present_window_priv(present_window);
BoxPtr damage_box;
struct wl_buffer *buffer;
struct xwl_present_event *event = xwl_present_event_from_vblank(vblank);
Bool implicit_sync = TRUE;
if (!xwl_window || !xwl_window->allow_commits)
return FALSE;
buffer = xwl_pixmap_get_wl_buffer(pixmap);
if (!buffer) {
ErrorF("present: Error getting buffer\n");
return FALSE;
}
damage_box = RegionExtents(damage);
pixmap->refcnt++;
event->pixmap = pixmap;
#if defined(XWL_HAS_GLAMOR) && defined(DRI3)
if (vblank->acquire_syncobj && vblank->release_syncobj) {
if (xwl_window->xwl_screen->explicit_sync) {
xwl_glamor_dri3_syncobj_passthrough(xwl_window,
vblank->acquire_syncobj,
vblank->release_syncobj,
vblank->acquire_point,
vblank->release_point);
implicit_sync = FALSE;
} else {
/* transfer from acquire syncobj to implicit fence */
int fence_fd =
vblank->acquire_syncobj->export_fence(vblank->acquire_syncobj,
vblank->acquire_point);
xwl_glamor_dmabuf_import_sync_file(vblank->pixmap, fence_fd);
}
}
#endif /* defined(XWL_HAS_GLAMOR) && defined(DRI3) */
if (implicit_sync) {
xwl_pixmap_set_buffer_release_cb(pixmap, xwl_present_buffer_release, event);
if (xwl_window->surface_sync) {
wp_linux_drm_syncobj_surface_v1_destroy(xwl_window->surface_sync);
xwl_window->surface_sync = NULL;
}
}
/* We can flip directly to the main surface (full screen window without clips) */
wl_surface_attach(xwl_window->surface, buffer, 0, 0);
if (xorg_list_is_empty(&xwl_present_window->frame_callback_list)) {
xorg_list_add(&xwl_present_window->frame_callback_list,
&xwl_window->frame_callback_list);
}
if (!xwl_window->frame_callback)
xwl_window_create_frame_callback(xwl_window);
xwl_surface_damage(xwl_window->xwl_screen, xwl_window->surface,
damage_box->x1 - present_window->drawable.x,
damage_box->y1 - present_window->drawable.y,
damage_box->x2 - damage_box->x1,
damage_box->y2 - damage_box->y1);
if (xwl_window->tearing_control) {
uint32_t hint;
if (event->options & PresentOptionAsyncMayTear)
hint = WP_TEARING_CONTROL_V1_PRESENTATION_HINT_ASYNC;
else
hint = WP_TEARING_CONTROL_V1_PRESENTATION_HINT_VSYNC;
wp_tearing_control_v1_set_presentation_hint(xwl_window->tearing_control, hint);
}
wl_surface_commit(xwl_window->surface);
if (!vblank->sync_flip) {
xwl_present_window->sync_callback =
wl_display_sync(xwl_window->xwl_screen->display);
wl_callback_add_listener(xwl_present_window->sync_callback,
&xwl_present_sync_listener,
&event->vblank);
}
wl_display_flush(xwl_window->xwl_screen->display);
return TRUE;
}
#if defined(XWL_HAS_GLAMOR) && defined(DRI3)
static void
xwl_present_acquire_fence_avail(int fd, int xevents, void *data)
{
present_vblank_ptr vblank = data;
SetNotifyFd(fd, NULL, 0, NULL);
close(fd);
vblank->efd = -1;
xwl_present_re_execute(vblank);
}
#endif /* defined(XWL_HAS_GLAMOR) && defined(DRI3) */
static Bool
xwl_present_wait_acquire_fence_avail(struct xwl_screen *xwl_screen,
present_vblank_ptr vblank)
{
#if defined(XWL_HAS_GLAMOR) && defined(DRI3)
/* If the compositor does not support explicit sync we need to wait for the
* acquire fence to be submitted before flipping. */
if (vblank->flip && !xwl_screen->explicit_sync &&
vblank->pixmap && vblank->acquire_syncobj &&
!vblank->acquire_syncobj->has_fence(vblank->acquire_syncobj,
vblank->acquire_point)) {
vblank->efd = eventfd(0, EFD_CLOEXEC);
SetNotifyFd(vblank->efd, xwl_present_acquire_fence_avail, X_NOTIFY_READ, vblank);
vblank->acquire_syncobj->submitted_eventfd(vblank->acquire_syncobj,
vblank->acquire_point,
vblank->efd);
return TRUE;
}
#endif /* defined(XWL_HAS_GLAMOR) && defined(DRI3) */
return FALSE;
}
static void
xwl_present_flush_blocked(struct xwl_present_window *xwl_present_window,
uint64_t crtc_msc)
{
struct xwl_screen *xwl_screen =
xwl_screen_get(xwl_present_window->window->drawable.pScreen);
struct xwl_present_event *blocked_event, *tmp;
if (!xwl_present_window->blocking_event)
return;
xwl_present_window->blocking_event = 0;
xorg_list_for_each_entry_safe(blocked_event, tmp,
&xwl_present_window->blocked_queue,
blocked) {
present_vblank_ptr blocked_vblank = &blocked_event->vblank;
xorg_list_del(&blocked_event->blocked);
if (present_execute_wait(blocked_vblank, crtc_msc) ||
xwl_present_wait_acquire_fence_avail(xwl_screen, blocked_vblank)) {
xwl_present_window->blocking_event = blocked_vblank->event_id;
return;
}
xwl_present_re_execute(blocked_vblank);
}
}
/*
* Once the required MSC has been reached, execute the pending request.
*
* For requests to actually present something, either blt contents to
* the window pixmap or queue a window buffer swap on the backend.
*
* For requests to just get the current MSC/UST combo, skip that part and
* go straight to event delivery.
*/
static void
xwl_present_execute(present_vblank_ptr vblank, uint64_t ust, uint64_t crtc_msc)
{
WindowPtr window = vblank->window;
struct xwl_present_window *xwl_present_window = xwl_present_window_get_priv(window);
present_vblank_ptr flip_pending = xwl_present_get_pending_flip(xwl_present_window);
struct xwl_present_event *event = xwl_present_event_from_vblank(vblank);
struct xwl_screen *xwl_screen = xwl_screen_get(window->drawable.pScreen);
Bool notify_only = !vblank->window || !vblank->pixmap;
xorg_list_del(&vblank->event_queue);
if (!notify_only && !event->copy_executed &&
xwl_present_window->blocking_event &&
xwl_present_window->blocking_event != event->vblank.event_id) {
/* an earlier request is blocking execution */
xorg_list_append(&event->blocked, &xwl_present_window->blocked_queue);
return;
}
retry:
if (present_execute_wait(vblank, crtc_msc) ||
xwl_present_wait_acquire_fence_avail(xwl_screen, vblank)) {
if (!notify_only)
/* block execution of subsequent requests until this request is ready */
xwl_present_window->blocking_event = event->vblank.event_id;
return;
}
if (flip_pending && vblank->flip && !notify_only) {
present_vblank_ptr flip_queued_last;
flip_queued_last = xorg_list_last_entry(&xwl_present_window->flip_queue,
present_vblank_rec, event_queue);
/* Do mailbox handling for queued flips, to prevent the flip queue from
* growing unbounded.
*/
if (flip_queued_last != flip_pending &&
(flip_queued_last->sync_flip
#ifdef DRI3
|| vblank->acquire_syncobj
#endif
)) {
xorg_list_del(&flip_queued_last->event_queue);
present_vblank_scrap(flip_queued_last);
xwl_present_re_execute(flip_queued_last);
}
DebugPresent(("\tr %" PRIu64 " %p (pending %p)\n",
vblank->event_id, vblank, flip_pending));
xorg_list_append(&vblank->event_queue, &xwl_present_window->flip_queue);
return;
}
vblank->queued = FALSE;
if (!notify_only && !event->copy_executed) {
ScreenPtr screen = window->drawable.pScreen;
int ret;
if (vblank->flip) {
RegionPtr damage;
DebugPresent(("\tf %" PRIu64 " %p %" PRIu64 ": %08" PRIx32 " -> %08" PRIx32 "\n",
vblank->event_id, vblank, crtc_msc,
vblank->pixmap->drawable.id, vblank->window->drawable.id));
/* Set update region as damaged */
if (vblank->update) {
damage = RegionDuplicate(vblank->update);
/* Translate update region to screen space */
assert(vblank->x_off == 0 && vblank->y_off == 0);
RegionTranslate(damage, window->drawable.x, window->drawable.y);
RegionIntersect(damage, damage, &window->clipList);
} else
damage = RegionDuplicate(&window->clipList);
if (xwl_present_flip(vblank, damage)) {
WindowPtr toplvl_window = xwl_present_toplvl_pixmap_window(vblank->window);
struct xwl_window *xwl_window = xwl_window_from_window(window);
PixmapPtr old_pixmap = screen->GetWindowPixmap(window);
/* Replace window pixmap with flip pixmap */
#ifdef COMPOSITE
vblank->pixmap->screen_x = old_pixmap->screen_x;
vblank->pixmap->screen_y = old_pixmap->screen_y;
#endif
present_set_tree_pixmap(toplvl_window, old_pixmap, vblank->pixmap);
if (toplvl_window == screen->root &&
screen->GetScreenPixmap(screen) == old_pixmap)
screen->SetScreenPixmap(vblank->pixmap);
vblank->pixmap->refcnt++;
dixDestroyPixmap(old_pixmap, old_pixmap->drawable.id);
/* Report damage, let damage_report ignore it though */
xwl_screen->ignore_damage = TRUE;
DamageDamageRegion(&vblank->window->drawable, damage);
xwl_screen->ignore_damage = FALSE;
RegionDestroy(damage);
/* Clear damage region, to ensure damage_report is called before
* any drawing to the window
*/
xwl_window_buffer_add_damage_region(xwl_window);
RegionEmpty(xwl_window_get_damage_region(xwl_window));
xorg_list_del(&xwl_window->link_damage);
/* Put pending flip at the flip queue head */
xorg_list_add(&vblank->event_queue, &xwl_present_window->flip_queue);
/* Realign timer */
xwl_present_reset_timer(xwl_present_window);
xwl_present_flush_blocked(xwl_present_window, crtc_msc);
return;
}
vblank->flip = FALSE;
/* re-execute, falling through to copy */
goto retry;
}
DebugPresent(("\tc %p %" PRIu64 ": %08" PRIx32 " -> %08" PRIx32 "\n",
vblank, crtc_msc, vblank->pixmap->drawable.id, vblank->window->drawable.id));
if (flip_pending)
flip_pending->abort_flip = TRUE;
else if (xwl_present_window->flip_active)
xwl_present_flips_stop(window);
present_execute_copy(vblank, crtc_msc);
assert(!vblank->queued);
/* Set the copy_executed field, so this will fall through to present_execute_post next time */
event->copy_executed = TRUE;
ret = xwl_present_queue_vblank(screen, window, vblank->crtc,
vblank->event_id, crtc_msc + 1);
xwl_present_flush_blocked(xwl_present_window, crtc_msc);
if (ret == Success)
return;
}
present_execute_post(vblank, ust, crtc_msc);
}
static int
xwl_present_pixmap(WindowPtr window,
PixmapPtr pixmap,
CARD32 serial,
RegionPtr valid,
RegionPtr update,
int16_t x_off,
int16_t y_off,
RRCrtcPtr target_crtc,
SyncFence *wait_fence,
SyncFence *idle_fence,
#ifdef DRI3
struct dri3_syncobj *acquire_syncobj,
struct dri3_syncobj *release_syncobj,
uint64_t acquire_point,
uint64_t release_point,
#endif /* DRI3 */
uint32_t options,
uint64_t target_window_msc,
uint64_t divisor,
uint64_t remainder,
present_notify_ptr notifies,
int num_notifies)
{
static uint64_t xwl_present_event_id;
uint64_t ust = 0;
uint64_t target_msc;
uint64_t crtc_msc = 0;
int ret;
present_vblank_ptr vblank;
ScreenPtr screen = window->drawable.pScreen;
present_window_priv_ptr window_priv = present_get_window_priv(window, TRUE);
present_screen_priv_ptr screen_priv = present_screen_priv(screen);
struct xwl_screen *xwl_screen = xwl_screen_get(screen_priv->pScreen);
uint32_t caps = xwl_screen->present_capabilities;
struct xwl_present_event *event;
if (!window_priv)
return BadAlloc;
#ifdef DRI3
if (!(caps & PresentCapabilitySyncobj) &&
(acquire_syncobj || release_syncobj))
return BadValue;
#endif /* DRI3 */
target_crtc = xwl_present_get_crtc(screen_priv, window);
ret = xwl_present_get_ust_msc(screen, window, &ust, &crtc_msc);
xwl_present_update_window_crtc(window_priv, target_crtc, crtc_msc);
if (ret == Success) {
/* Stash the current MSC away in case we need it later
*/
window_priv->msc = crtc_msc;
}
target_msc = present_get_target_msc(target_window_msc + window_priv->msc_offset,
crtc_msc,
divisor,
remainder,
options);
event = calloc(1, sizeof(*event));
if (!event)
return BadAlloc;
vblank = &event->vblank;
if (!present_vblank_init(vblank, window, pixmap, serial, valid, update, x_off, y_off,
target_crtc, wait_fence, idle_fence,
#ifdef DRI3
acquire_syncobj, release_syncobj, acquire_point, release_point,
#endif /* DRI3 */
options, caps, notifies, num_notifies, target_msc, crtc_msc)) {
present_vblank_destroy(vblank);
return BadAlloc;
}
vblank->event_id = ++xwl_present_event_id;
event->options = options;
event->divisor = divisor;
event->remainder = remainder;
vblank->exec_msc = xwl_present_get_exec_msc(options, vblank->target_msc);
vblank->queued = TRUE;
if (crtc_msc < vblank->exec_msc) {
if (xwl_present_queue_vblank(screen, window, target_crtc, vblank->event_id, vblank->exec_msc) == Success)
return Success;
DebugPresent(("present_queue_vblank failed\n"));
}
xwl_present_execute(vblank, ust, crtc_msc);
return Success;
}
void
xwl_present_unrealize_window(struct xwl_present_window *xwl_present_window)
{
/* The pending frame callback may never be called, so drop it and shorten
* the frame timer interval.
*/
xorg_list_del(&xwl_present_window->frame_callback_list);
/* Make sure the timer callback doesn't get called */
xwl_present_window->timer_armed = 0;
xwl_present_reset_timer(xwl_present_window);
}
Bool
xwl_present_maybe_redirect_window(WindowPtr window)
{
struct xwl_present_window *xwl_present_window = xwl_present_window_get_priv(window);
struct xwl_window *xwl_window = xwl_window_from_window(window);
if (xwl_present_window->redirect_failed)
return FALSE;
if (compRedirectWindow(serverClient, window, CompositeRedirectManual) != Success) {
xwl_present_window->redirect_failed = TRUE;
return FALSE;
}
xwl_present_window->redirected = TRUE;
xwl_window_update_surface_window(xwl_window);
if (xwl_window->surface_window != window) {
compUnredirectWindow(serverClient, window, CompositeRedirectManual);
xwl_present_window->redirected = FALSE;
xwl_present_window->redirect_failed = TRUE;
xwl_window_update_surface_window(xwl_window);
return FALSE;
}
if (!xwl_window->surface_window_damage)
xwl_window->surface_window_damage = RegionCreate(NullBox, 1);
return TRUE;
}
static CARD32
unredirect_window(OsTimerPtr timer, CARD32 time, void *arg)
{
WindowPtr window = arg;
struct xwl_present_window *xwl_present_window = xwl_present_window_get_priv(window);
compUnredirectWindow(serverClient, window, CompositeRedirectManual);
xwl_present_window->redirected = FALSE;
xwl_present_window->unredirect_timer = NULL;
return 0;
}
Bool
xwl_present_maybe_unredirect_window(WindowPtr window)
{
struct xwl_present_window *xwl_present_window = xwl_present_window_get_priv(window);
if (!xwl_present_window || !xwl_present_window->redirected)
return FALSE;
/* This function may get called from composite layer code, in which case
* calling compUnredirectWindow would blow up. To avoid this, set up a timer
* which will call it "as soon as possible".
*/
if (!xwl_present_window->unredirect_timer) {
xwl_present_window->unredirect_timer =
TimerSet(NULL, 0, 1, unredirect_window, window);
}
return TRUE;
}
Bool
xwl_present_window_redirected(WindowPtr window)
{
struct xwl_present_window *xwl_present_window = xwl_present_window_get_priv(window);
return xwl_present_window->redirected;
}
Bool
xwl_present_init(ScreenPtr screen)
{
struct xwl_screen *xwl_screen = xwl_screen_get(screen);
present_screen_priv_ptr screen_priv;
if (!present_screen_register_priv_keys())
return FALSE;
if (present_screen_priv(screen))
return TRUE;
screen_priv = present_screen_priv_init(screen);
if (!screen_priv)
return FALSE;
if (!dixRegisterPrivateKey(&xwl_present_window_private_key, PRIVATE_WINDOW, 0))
return FALSE;
xwl_screen->present_capabilities = XWL_PRESENT_CAPS;
#ifdef XWL_HAS_GLAMOR
if (xwl_glamor_supports_syncobjs(xwl_screen))
xwl_screen->present_capabilities |=
PresentCapabilitySyncobj;
#endif /* XWL_HAS_GLAMOR */
screen_priv->query_capabilities = xwl_present_query_capabilities;
screen_priv->get_crtc = xwl_present_get_crtc;
screen_priv->check_flip = xwl_present_check_flip;
screen_priv->check_flip_window = xwl_present_check_flip_window;
screen_priv->clear_window_flip = xwl_present_clear_window_flip;
screen_priv->present_pixmap = xwl_present_pixmap;
screen_priv->queue_vblank = xwl_present_queue_vblank;
screen_priv->flush = xwl_present_flush;
screen_priv->flush_fenced = xwl_present_flush_fenced;
screen_priv->re_execute = xwl_present_re_execute;
screen_priv->abort_vblank = xwl_present_abort_vblank;
return TRUE;
}
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