diff options
| author | Pauli Nieminen <ext-pauli.nieminen@nokia.com> | 2010-11-01 16:22:00 +0200 |
|---|---|---|
| committer | Keith Packard <keithp@keithp.com> | 2011-09-21 13:55:45 -0700 |
| commit | b435e2aac1b3fbb97d0275de73a1e36d16f170c0 (patch) | |
| tree | ef52b0d0b31aa795313e6b3631a81623086a5577 | |
| parent | 86f8da0aa7612558e6563f5de0d9f9793854053f (diff) | |
DRI2: Expose API to set drawable swap limit.
This allows ddx to set swap_limit if there is more than one back
buffer for drawable. Setting swap_limit has to also check if change
affects a client that is blocked.
This can be used to implement N-buffering in driver with minimal
logic in allocation and selecting next back.
Signed-off-by: Pauli Nieminen <ext-pauli.nieminen@nokia.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Reviewed-by: Mario Kleiner <mario.kleiner@tuebingen.mpg.de>
Signed-off-by: Keith Packard <keithp@keithp.com>
| -rw-r--r-- | hw/xfree86/dri2/dri2.c | 23 | ||||
| -rw-r--r-- | hw/xfree86/dri2/dri2.h | 1 |
2 files changed, 24 insertions, 0 deletions
diff --git a/hw/xfree86/dri2/dri2.c b/hw/xfree86/dri2/dri2.c index 1e6ee16a2..ae685bb0a 100644 --- a/hw/xfree86/dri2/dri2.c +++ b/hw/xfree86/dri2/dri2.c @@ -192,6 +192,29 @@ DRI2AllocateDrawable(DrawablePtr pDraw) return pPriv; } +Bool +DRI2SwapLimit(DrawablePtr pDraw, int swap_limit) +{ + DRI2DrawablePtr pPriv = DRI2GetDrawable(pDraw); + if (!pPriv) + return FALSE; + + pPriv->swap_limit = swap_limit; + + /* Check throttling */ + if (pPriv->swapsPending >= pPriv->swap_limit) + return TRUE; + + if (pPriv->target_sbc == -1 && !pPriv->blockedOnMsc) { + if (pPriv->blockedClient) { + AttendClient(pPriv->blockedClient); + pPriv->blockedClient = NULL; + } + } + + return TRUE; +} + typedef struct DRI2DrawableRefRec { XID id; XID dri2_id; diff --git a/hw/xfree86/dri2/dri2.h b/hw/xfree86/dri2/dri2.h index 7afba8ea0..8c0c64b82 100644 --- a/hw/xfree86/dri2/dri2.h +++ b/hw/xfree86/dri2/dri2.h @@ -265,6 +265,7 @@ extern _X_EXPORT DRI2BufferPtr *DRI2GetBuffersWithFormat(DrawablePtr pDraw, int *out_count); extern _X_EXPORT void DRI2SwapInterval(DrawablePtr pDrawable, int interval); +extern _X_EXPORT Bool DRI2SwapLimit(DrawablePtr pDraw, int swap_limit); extern _X_EXPORT int DRI2SwapBuffers(ClientPtr client, DrawablePtr pDrawable, CARD64 target_msc, CARD64 divisor, CARD64 remainder, CARD64 *swap_target, |