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evas: correct multi buffer support.

This commit is contained in:
Cedric BAIL 2014-07-09 16:14:57 +02:00
parent 68110c63b6
commit 8d53f4ca3b
3 changed files with 16 additions and 14 deletions
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1
src/modules/evas/engines/drm/evas_drm.c
View File

@ -319,6 +319,7 @@ _evas_drm_outbuf_page_flip(int fd EINA_UNUSED, unsigned int seq EINA_UNUSED, uns
/* DBG("Page Flip Event"); */
ob->priv.pending_flip = EINA_FALSE;
ob->priv.last = ob->priv.curr;
ob->priv.curr = (ob->priv.curr + 1) % ob->priv.num;
}

2
src/modules/evas/engines/drm/evas_engine.h
View File

@ -106,7 +106,7 @@ struct _Outbuf
int fd;
unsigned int conn, crtc, fb;
int curr, num;
int curr, last, num;
drmModeModeInfo mode;
drmEventContext ctx;

27
src/modules/evas/engines/drm/evas_outbuf.c
View File

@ -201,26 +201,27 @@ evas_outbuf_reconfigure(Outbuf *ob, int w, int h, int rot, Outbuf_Depth depth)
Render_Engine_Swap_Mode
evas_outbuf_buffer_state_get(Outbuf *ob)
{
int i = 0, n = 0, count = 0;
int delta;
/* check for valid output buffer */
if (!ob) return MODE_FULL;
for (; i < ob->priv.num; i++)
{
n = (ob->priv.num + ob->priv.curr - i) % ob->priv.num;
if (ob->priv.buffer[n].valid) count++;
else break;
}
delta = (ob->priv.last - ob->priv.curr +
(ob->priv.last > ob->priv.last ?
0 : ob->priv.num)) % ob->priv.num;
if (count == ob->priv.num)
/* This is the number of frame since last frame */
switch (delta)
{
if (count == 1) return MODE_COPY;
else if (count == 2) return MODE_DOUBLE;
else if (count == 3) return MODE_TRIPLE;
case 0:
return MODE_COPY;
case 1:
return MODE_DOUBLE;
case 2:
return MODE_TRIPLE;
default:
return MODE_FULL;
}
return MODE_FULL;
}
void *