[krita/krita/3.2] libs/image: Disable tile data pool

[Boudewijn Rempt]

Git commit fb358753fa7dc6b536e51ad0c491562d67c79727 by Boudewijn Rempt, on behalf of Dmitry Kazakov.
Committed on 11/07/2017 at 11:27.
Pushed by rempt into branch 'krita/3.2'.

Disable tile data pool

It looks like at least in some circumstances it can make rendering of
the image 5-30% slower. I will disable it by default until further
details are investigated.

If you modified your performance settings, this auto-disabling will
not work. You should disable it manually by setting its size to 0%
in Preferences->Performace tab.

The testing, where the slowdown was registered, was done on 4k
image using KisProjectionBenchmark.

CC:kimageshop at kde.org

M  +1    -1    libs/image/kis_image_config.cpp

https://commits.kde.org/krita/fb358753fa7dc6b536e51ad0c491562d67c79727

diff --git a/libs/image/kis_image_config.cpp b/libs/image/kis_image_config.cpp
index ac70dbbc0ec..26bde92f6c4 100644
--- a/libs/image/kis_image_config.cpp
+++ b/libs/image/kis_image_config.cpp
@@ -211,7 +211,7 @@ void KisImageConfig::setMemorySoftLimitPercent(qreal value)
 qreal KisImageConfig::memoryPoolLimitPercent(bool requestDefault) const
 {
     return !requestDefault ?
-        m_config.readEntry("memoryPoolLimitPercent", 2.) : 2.;
+        m_config.readEntry("memoryPoolLimitPercent", 0.0) : 0.0;
 }
 
 void KisImageConfig::setMemoryPoolLimitPercent(qreal value)