diff options
| author | AdamJackson <AdamJackson@web> | 2016-09-27 17:17:21 +0000 |
|---|---|---|
| committer | xorg <iki-xorg@freedesktop.org> | 2016-09-27 17:17:21 +0000 |
| commit | 9cbda53539a1524f99b1325fab3c12a721042e70 (patch) | |
| tree | 19f2f74179ec6c69548cfb30e783418facd98229 | |
| parent | 797ff8c846b63f5c893865475eb94cf5146ed6e0 (diff) | |
| -rw-r--r-- | Development/Documentation/GlamorPerformance.mdwn | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Development/Documentation/GlamorPerformance.mdwn b/Development/Documentation/GlamorPerformance.mdwn index 1747051f..ed670dbc 100644 --- a/Development/Documentation/GlamorPerformance.mdwn +++ b/Development/Documentation/GlamorPerformance.mdwn @@ -69,3 +69,9 @@ Might be nice to add support for more formats? Should inspect the source to vari ## Übershader Switching among shader programs isn't free. Would be worth investigating whether a single shader performs as well as the current design. + +## Flush reduction + +Currently we flush in BlockHandler, which is quite often. Strictly speaking we only need to do this when we're trying to synchronize between the X and GL command streams (or, arguably, when sending damage events), and can otherwise let the implicit flush in SwapBuffers do the job for us. + +The GL sync extensions should be able to help us out with this, though on at least i965 they're equivalent to a flush so they're not _that_ much help. |