If the SRGB framebuffer extension in GL is available, we can support
gamma correction of text with a gamma of 2.1. On Mac this is
sufficient for gamma correcting subpixel antialiased text. Gray
antialiasing should not be gamma corrected on Mac.
On Windows, the user can potentially set the gamma value to anything
between 1.0 and 2.2 (or something like that). We support anything
that resembles 1.0 closely enough by pushing the text out without
any correction (like before). We also support anything that resembles
2.1 (the gamma hardcoded in GL's SRGB extension) by turning on the
extension before blending the text. In between the two, we'll use
gray antialiasing to avoid differing too much from the raster engine
(which is our reference in this.)
For gray antialiasing on Windows, we use a constant gamma of 2.3 which
has been determined by experimentation. Since this is close enough to
2.1 we do gamma correction with SRGB extension.
The distance limit of 0.2 is determined by some experimentation.
Reviewed-by: Samuel
(cherry picked from commit 79ba7cceca5e4029876ace2121edd25b08ae14ce)
This will allow us to expose private headers in a controlled manner,
and ensure that they are not used by accident. This also means that
we internally will have to enable the private headers for the
modules we wish to use in the project.
When building Qt, qmake should not pull in mkspecs from an installed
version, as this will lead to incorrect paths for the current build.
So, here we ensure only to pull in modules from there we detected the
qconfig.pri, and ensure we still handle the QMAKEPATH case used by
some.
startPolling() is called by each engine, so before it would start
multiple singleshot timers. So I moved the timer to the class
and check if it has already been started before it is activated
again. So that we just use one timer.
Task-number: QTBUG-17219
Reviewed-by: Iiro Kause
Reviewed-by: Kranthi Kuntala
(cherry picked from commit 2506b86828ca8140c2f22d85a4378df40899b132)
Make sure that waitForReadyRead times out if the read buffer is full.
Task-number: QTBUG-16123
Reviewed-by: Peter Hartmann
(cherry picked from commit 8d4cd52b6981a4e6deea7fdb77f56e40c4f3e6ba)
