fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-02-23 07:30:30 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

dri1: Add a macro to validate two dri drawables in one go.

Browse source 
Dri drivers often may validate first a write drawable and then a read
drawable ("readable"). However, the hardware lock may be unlocked when
validating the readable, causing the write drawable status to be stale.

Drivers should use this macro instead when validating two drawables.
This commit is contained in:
Thomas Hellstrom 2009-01-20 11:07:10 +01:00
parent a5b5bc9f95
commit 11351f0c8a
1 changed files with 22 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
src/mesa/drivers/dri/common/dri_util.h
View file

@ -108,6 +108,28 @@ do { \
} \
} while (0)
/**
* Same as above, but for two drawables simultaneously.
*
*/
#define DRI_VALIDATE_TWO_DRAWABLES_INFO(psp, pdp, prp) \
do { \
while (*((pdp)->pStamp) != (pdp)->lastStamp || \
*((prp)->pStamp) != (prp)->lastStamp) { \
register unsigned int hwContext = (psp)->pSAREA->lock.lock & \
~(DRM_LOCK_HELD | DRM_LOCK_CONT); \
DRM_UNLOCK((psp)->fd, &(psp)->pSAREA->lock, hwContext); \
\
DRM_SPINLOCK(&(psp)->pSAREA->drawable_lock, (psp)->drawLockID); \
DRI_VALIDATE_DRAWABLE_INFO_ONCE(pdp); \
DRI_VALIDATE_DRAWABLE_INFO_ONCE(prp); \
DRM_SPINUNLOCK(&(psp)->pSAREA->drawable_lock, (psp)->drawLockID); \
\
DRM_LIGHT_LOCK((psp)->fd, &(psp)->pSAREA->lock, hwContext); \
} \
} while (0)
/**
* Driver callback functions.