diff options
Diffstat (limited to 'src/sna/sna_driver.c')
| -rw-r--r-- | src/sna/sna_driver.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/sna/sna_driver.c b/src/sna/sna_driver.c index 4f8895f1..d810b262 100644 --- a/src/sna/sna_driver.c +++ b/src/sna/sna_driver.c @@ -459,7 +459,18 @@ static bool enable_tear_free(struct sna *sna) if (sna->flags & SNA_LINEAR_FB) return false; - /* Under certain conditions, we should enable TearFree by default, + /* + * On recent HW, where the display surfaces are in a seperate GTT + * to userspace, there is much less contention on global resources + * and also we can assume there is much more memory bandwidth + * available (i.e. gen8+). This HW should rarely be under such + * constaints as to need to disable TearFree, so enable by default. + */ + if (sna->kgem.has_full_ppgtt) + return true; + + /* + * Under certain conditions, we should enable TearFree by default, * for example when the hardware requires pageflipping to run within * its power/performance budget. */ |