diff options
| author | Po Lu <luangruo@yahoo.com> | 2023-09-03 09:25:06 +0800 |
|---|---|---|
| committer | Po Lu <luangruo@yahoo.com> | 2023-09-03 09:25:06 +0800 |
| commit | fd5593c7f254e2c8893feaf6b10715d375b10013 (patch) | |
| tree | 4e76bfa6a0c473b58f4e55b50195bf1306585543 /etc/PROBLEMS | |
| parent | dd896ea1e62a466faf7bce61e382ee1e9f35f6b8 (diff) | |
| download | emacs-fd5593c7f254e2c8893feaf6b10715d375b10013.tar.gz | |
* etc/PROBLEMS: Mention bug#65432 and its remedy.
Diffstat (limited to 'etc/PROBLEMS')
| -rw-r--r-- | etc/PROBLEMS | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/etc/PROBLEMS b/etc/PROBLEMS index 6585d5b479d..f398244f3bb 100644 --- a/etc/PROBLEMS +++ b/etc/PROBLEMS @@ -1624,6 +1624,18 @@ to normal, do (set-scroll-bar-mode 'left) +*** Redisplay with scaled images is slow when built with Cairo. + +Cairo expends a noticeable amount of time displaying large images with +a transform applied. These images most frequently appear within Eww +buffers or Image Mode buffers after executing the image scaling +commands `i +' or `i -', and their presence incurs a performance +penalty of hundereds of milliseconds to seconds upon redisplay. The +remedy is to build without Cairo after verifying the XRender extension +is present on your X server and its headers are present on your +system, whereupon Emacs will use that extension to efficiently perform +image transforms within the X server. + *** Error messages about undefined colors on X. The messages might say something like this: |