davidedmundson created this revision. Restricted Application added a project: Plasma. Restricted Application added a subscriber: plasma-devel.
REVISION SUMMARY This patch caputres from the framebuffer using the framebuffer's geometry, factoring in scale. We then keep the current normal DPI framebuffer causing it to downsample there. This is good because: - it keeps the code very simple - it's a performance optimisation. Blurring on 4k is naturally more expensive than at regular DPI. Downsampling keeps it the same - and you can't see a difference given it's high DPI and you're going to blur it anwyay. - it keeps kernel sizes somewhat resolution independent so it will look just as blurry across multiple screens. ::doCachedBlur still needs doing. TEST PLAN Ran an app Ran the kwindowsystem blur test Observed the right part of the window being blurred BRANCH scaling_final REVISION DETAIL https://phabricator.kde.org/D4963 AFFECTED FILES effects/blur/blur.cpp To: davidedmundson, #plasma Cc: plasma-devel, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol
