[cairo-bugs] [Bug 10151] Add mediaLib support

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=10151





------- Comment #8 from brian.cameron at sun.com  2007-03-05 03:37 PST -------
Created an attachment (id=8981)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=8981&action=view)
output without mediaLib


I have attached the performance output with and without mediaLib.  You can see
that mediaLib does improve some functions.

I do notice that the functions that have MEDIALIB tunings aren't exercised a
great deal by this performance suite: fbCombineOverU called 3.67% of the time, 
fbCombineMaskU 1.67% of the time, fbStore_a8 0.03% of the time, and
fbCombineInU not at all.

In fact, the performance test looks like this:

pixman_gradient_color                10.79%
fbFetchSourcePict                    10.49%
fbCombineOverU                        3.67%
gradientPixel                         2.64%
sqrt                                  2.56%
_active_edges_to_traps                2.15%
memcpy                                2.05%
fbCombineMaskU                        1.67%
fbRasterizeEdges8                     1.58%
_cairo_bo_sweep_line_validate         1.36%
_cairo_bo_edge_start_or_continue_trap 1.17%
_cairo_pixman_render_edge_init        1.17%
fbCombineOutReverseU                  1.13%
UDiv                                  1.07%
pixman_fill_rect_32bpp                0.95%
qsort                                 0.93%
fbCombineAddU                         0.91%

So, almost 50% of the total time is in just the above functions.  I wonder if
the performance test coverage is a bit poor?

For reference, using mediaLib the percentages change as follows:

fbFetchSourcePict       16.26%
pixman_gradient_color   15.28%
gradientPixel            3.94%
sqrt                     3.80%
_active_edges_to_traps   1.98%
memcpy                   1.92%
fbRasterizeEdges8        1.48%
_cairo_bo_sweep_line_validate         1.12%
_cairo_bo_edge_start_or_continue_trap 1.11%
_cairo_pixman_render_edge_init        1.05%
mlib_ImageBlend_ONE_OMDA 1.05%
_cairo_uint64x64_128_mul 1.01%
UDiv                     0.91%
mlib_ImageBlend_ZERO_DA  0.91%
fbCombineAddU            0.87%
Total runtime 86.531 seconds


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