Summary:
With the Oxygen cursor theme, a visual glitch can appear in the
bottom-left corner of the cursor when the screen is zoomed in.
The reason for that is we're using GL_REPEAT for GL_TEXTURE_WRAP_S
and GL_TEXTURE_WRAP_T. So, when the linear filter samples neighboring
texels in the bottom, it can sample some texels from the top (because of
GL_REPEAT).
To fix that, we have to set the wrap mode to GL_CLAMP_TO_EDGE.
BUG: 338254
FIXED-IN: 5.14.0
Test Plan:
Before:
{F6303912}
After:
{F6303913}
Tried other cursor themes(Breeze and Adwaita), everything looks okay.
Reviewers: #kwin, davidedmundson
Reviewed By: #kwin, davidedmundson
Subscribers: davidedmundson, kwin
Tags: #kwin
Differential Revision: https://phabricator.kde.org/D15949
e9fd57285f