[Bug 28604] 2gis laggy map redraw

http://bugs.winehq.org/show_bug.cgi?id=28604

--- Comment #10 from Yuri Khan  2011-11-20 02:44:50 CST ---
Sadly, no noticeable effect on productivity. Rendering the same map extent
(266K pixels, 16658 lines) twice on program startup seems to take 105 s in
bres_line_with_bias on 1.3.33, 106s in solid_line_32 on 1.3.33 with patch.
Measuring with a stopwatch, I get 3 minutes since I click the Next button on
the startup screen until the CPU meter drops to near zero.

Maybe my measurements are not quite sound because of timer accuracy. Here’s how
I do it. At the top of function to profile, I add this:

static DWORD time_total = 0, length_total = 0;
DWORD time_once = GetTickCount(), length_once = /*suitable code*/;

At the end:

time_once = GetTickCount() - time_once;
time_total += time_once;
length_total += length_once;
TRACE_(dib_profile)("Spent %d ms for %d px, total %d ms for %d px\n",
    time_once, length_once, time_total, length_total);

and run with WINEDEBUG=+dib_profile, redirecting all output to a file. The
resulting file has many lines with spent time = 0 ms and some lines where spent
time is about 45 ms. I assume it all statistically adds up to roughly the
correct total in the end.