[Bug 2749] Dynamic modules need visibility cleanups

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https://bugs.freedesktop.org/show_bug.cgi?id=2749          
     




------- Additional Comments From ajax at nwnk.net  2005-03-19 17:30 -------
quick performance numbers using render_bench and Xvfb, with imlib2 numbers culled.  before:

*** ROUND 1 ***
---------------------------------------------------------------
Test: Test Xrender doing non-scaled Over blends
Time: 8.254 sec.
---------------------------------------------------------------
Test: Test Xrender (offscreen) doing non-scaled Over blends
Time: 3.650 sec.
*** ROUND 2 ***
---------------------------------------------------------------
Test: Test Xrender doing 1/2 scaled Over blends
Time: 7.601 sec.
---------------------------------------------------------------
Test: Test Xrender (offscreen) doing 1/2 scaled Over blends
Time: 7.626 sec.
*** ROUND 3 ***
---------------------------------------------------------------
Test: Test Xrender doing 2* smooth scaled Over blends
Time: 170.836 sec.
---------------------------------------------------------------
Test: Test Xrender (offscreen) doing 2* smooth scaled Over blends
Time: 171.429 sec.

and after:

*** ROUND 1 ***
---------------------------------------------------------------
Test: Test Xrender doing non-scaled Over blends
Time: 7.622 sec.
---------------------------------------------------------------
Test: Test Xrender (offscreen) doing non-scaled Over blends
Time: 3.493 sec.
*** ROUND 2 ***
---------------------------------------------------------------
Test: Test Xrender doing 1/2 scaled Over blends
Time: 7.520 sec.
---------------------------------------------------------------
Test: Test Xrender (offscreen) doing 1/2 scaled Over blends
Time: 7.291 sec.
*** ROUND 3 ***
---------------------------------------------------------------
Test: Test Xrender doing 2* smooth scaled Over blends
Time: 168.337 sec.
---------------------------------------------------------------
Test: Test Xrender (offscreen) doing 2* smooth scaled Over blends
Time: 169.048 sec.

the Render software path is extremely function-call intensive in the unscaled case, so the Round 1 
numbers are what's interesting here.  nearly 8% faster, not bad.  the speedup won't be as big on 
hardware-backed servers since framebuffer reads are slow and Render does a lot of them.          
     
     
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