Amico Amico wrote:
Hello,
since I had a poor performance in drawing many buttons and text input
fields at the same time into a window with wine, I applied the
DIBEngine patch (http://wiki.winehq.org/DIBEngine) that is available
for wine 1.1.44 (http://bugs.winehq.org/attachment.cgi?id=27879) to
the 1.1.44 version of wine and started my application program that
needs to draw many button and text input fields in a single window
with the enviroment variable "WINEDIB=ON wine ./App.exe".
Now that the DIBEngine patch is applied a little speedup in the
drawing of the buttons and the text input fields is shown, but now the
problem is that they are still drawn in blocks of a subset of the
total number and then wine waits a little bit, then it draws another
block of text input fields and buttons and then wine still waits, then
it draws, and so on. The result is that my App.exe application window
that is full of buttons and text input fields is drawn in subsequent
times, and groups of buttons and input fields are drawn in blocks with
a delay between the drawing of a group of controls and the others.
This does duplicate Windows performance as not all controls are drawn at
the same time. If you used a slower/older machine this is very
apparent. Because of the delays induced by Wine's use of opengl this
shows.
The fact that not all the controls are drawn at a time but in more
times is frustrating, since the CPU is a core2duo, and I think that it
is powerful enough to draw all of the controls in the window at a
time, specially with the DIBEngine patch applied and the DIBEngine
activated. So I thought that the problem could be in the main event
loop that manages the App.exe application window, and in particular
the problem could be that the loop yields the drawing of the controls
after a certain number of controls have been drawn in order to avoid
CPU high load and then the loop starts again to draw other controls
after a while and then it stops and yields and waits again, and so on.
This is what Windows does as well. It is very interesting to watch on
my older PIII/750 machine running WindowsXP.
However, if you feel that you can improve performance, you are welcome
to try.
I plan on picking up and examining the DIB Engine code after the release
of Wine 1.2 and building a few more features that are missing from richedit.
James McKenzie
