static void
nouveau_dri2_finish_swap(DrawablePtr draw, unsigned int frame,
unsigned int tv_sec, unsigned int tv_usec,
struct nouveau_dri2_vblank_state *s)
{
ScrnInfoPtr scrn = xf86ScreenToScrn(draw->pScreen);
NVPtr pNv = NVPTR(scrn);
PixmapPtr dst_pix;
PixmapPtr src_pix = nouveau_dri2_buffer(s->src)->ppix;
struct nouveau_bo *dst_bo;
struct nouveau_bo *src_bo = nouveau_pixmap_bo(src_pix);
struct nouveau_pushbuf *push = pNv->pushbuf;
RegionRec reg;
int type, ret;
Bool front_updated, will_exchange;
xf86CrtcPtr ref_crtc;
REGION_INIT(0, ®, (&(BoxRec){ 0, 0, draw->width, draw->height }), 0);
REGION_TRANSLATE(0, ®, draw->x, draw->y);
/* Main crtc for this drawable shall finally deliver pageflip event. */
ref_crtc = nouveau_pick_best_crtc(scrn, FALSE, draw->x, draw->y,
draw->width, draw->height);
/* Update frontbuffer pixmap and name: Could have changed due to
* window (un)redirection as part of compositing.
*/
front_updated = update_front(draw, s->dst);
/* Assign frontbuffer pixmap, after update in update_front() */
dst_pix = nouveau_dri2_buffer(s->dst)->ppix;
dst_bo = nouveau_pixmap_bo(dst_pix);
/* Throttle on the previous frame before swapping */
nouveau_bo_wait(dst_bo, NOUVEAU_BO_RD, push->client);
/* Swap by buffer exchange possible? */
will_exchange = front_updated && can_exchange(draw, dst_pix, src_pix);
/* Only emit a wait for vblank pushbuf here if this is a copy-swap, or
* if it is a kms pageflip-swap on an old kernel. Pure exchange swaps
* don't need sync to vblank. kms pageflip-swaps on Linux 3.13+ are
* synced to vblank in the kms driver, so we must not sync here, or
* framerate will be cut in half!
*/
if (can_sync_to_vblank(draw) &&
(!will_exchange ||
(!pNv->has_async_pageflip && nouveau_exa_pixmap_is_onscreen(dst_pix)))) {
/* Reference the back buffer to sync it to vblank */
nouveau_pushbuf_refn(push, &(struct nouveau_pushbuf_refn) {
src_bo,
NOUVEAU_BO_VRAM | NOUVEAU_BO_RD
}, 1);
void
vivante_dri2_vblank(int fd, unsigned frame, unsigned tv_sec, unsigned tv_usec,
void *event)
{
struct vivante_dri_wait *wait = event;
DrawablePtr draw;
if (!wait->drawable_id)
goto out;
if (dixLookupDrawable(&draw, wait->drawable_id, serverClient, M_ANY,
DixWriteAccess) != Success)
goto out;
switch (wait->type) {
case DRI2_FLIP:
if (can_exchange(draw, wait->front, wait->back) &&
vivante_dri2_ScheduleFlip(draw, wait))
return;
/* FALLTHROUGH */
case DRI2_SWAP:
vivante_dri2_blit(wait->client, draw, wait->front, wait->back,
frame, tv_sec, tv_usec,
wait->client ? wait->event_func : NULL,
wait->event_data);
break;
case DRI2_WAITMSC:
if (wait->client)
DRI2WaitMSCComplete(wait->client, draw, frame, tv_sec, tv_usec);
break;
default:
xf86DrvMsg(xf86ScreenToScrn(draw->pScreen)->scrnIndex,
X_WARNING, "%s: unknown vblank event received\n",
__FUNCTION__);
break;
}
out:
del_wait_info(wait);
}
static int
vivante_dri2_ScheduleSwap(ClientPtr client, DrawablePtr draw,
DRI2BufferPtr front, DRI2BufferPtr back, CARD64 *target_msc,
CARD64 divisor, CARD64 remainder, DRI2SwapEventPtr func, void *data)
{
struct vivante *vivante = vivante_get_screen_priv(draw->pScreen);
struct vivante_dri_wait *wait;
drmVBlank vbl;
CARD64 cur_msc;
int ret, crtc;
crtc = vivante_dri2_drawable_crtc(draw);
/* Drawable not displayed... just complete */
if (crtc < 0)
goto blit;
*target_msc &= 0xffffffff;
divisor &= 0xffffffff;
remainder &= 0xffffffff;
wait = new_wait_info(client, draw, DRI2_SWAP);
if (!wait)
goto blit;
wait->crtc = crtc;
wait->event_func = func;
wait->event_data = data;
wait->front = front;
wait->back = back;
vivante_dri2_buffer_reference(front);
vivante_dri2_buffer_reference(back);
ret = vivante_dri2_waitvblank(vivante, &vbl, crtc, __FUNCTION__);
if (ret)
goto blit_free;
cur_msc = vbl.reply.sequence;
/* Flips need to be submitted one frame before */
if (can_exchange(draw, front, back)) {
wait->type = DRI2_FLIP;
if (*target_msc > 0)
*target_msc -= 1;
}
if (divisor == 0 || cur_msc < *target_msc) {
if (wait->type == DRI2_FLIP && vivante_dri2_ScheduleFlip(draw, wait))
return TRUE;
/*
* If target_msc has been reached or passed, set it to cur_msc
* to ensure we return a reasonable value back to the caller.
* This makes the swap_interval logic more robust.
*/
if (cur_msc >= *target_msc)
*target_msc = cur_msc;
vbl.request.sequence = *target_msc;
} else {
vbl.request.sequence = cur_msc - (cur_msc % divisor) + remainder;
/*
* If the calculated deadline sequence is smaller than or equal
* to cur_msc, it means we've passed the point when effective
* onset frame seq could satisfy seq % divisor == remainder,
* so we need to wait for the next time this will happen.
*
* This comparison takes the 1 frame swap delay in pageflipping
* mode into account, as well as a potential
* DRM_VBLANK_NEXTONMISS delay if we are blitting/exchanging
* instead of flipping.
*/
if (vbl.request.sequence <= cur_msc)
vbl.request.sequence += divisor;
/* Account for 1 frame extra pageflip delay if flip > 0 */
if (wait->type == DRI2_FLIP)
vbl.request.sequence -= 1;
}
vbl.request.type = DRM_VBLANK_ABSOLUTE | DRM_VBLANK_EVENT | drm_req_crtc(crtc);
if (wait->type != DRI2_FLIP)
vbl.request.type |= DRM_VBLANK_NEXTONMISS;
vbl.request.signal = (unsigned long)wait;
ret = drmWaitVBlank(vivante->drm_fd, &vbl);
if (ret) {
xf86DrvMsg(vivante->scrnIndex, X_WARNING,
"get vblank counter failed: %s\n",
strerror(errno));
goto blit_free;
}
*target_msc = vbl.reply.sequence + (wait->type == DRI2_FLIP);
wait->frame = *target_msc;
return TRUE;
blit_free:
del_wait_info(wait);
blit:
vivante_dri2_blit(client, draw, front, back, 0, 0, 0, func, data);
*target_msc = 0;
return TRUE;
}