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| author | Stanislaw Halik <sthalik@misaki.pl> | 2024-04-11 08:55:21 +0200 |
|---|---|---|
| committer | Stanislaw Halik <sthalik@misaki.pl> | 2024-04-11 21:40:00 +0200 |
| commit | c362121f04ffe72eed17126affc9129bbb354c49 (patch) | |
| tree | 3a0918ca5f11bb961d465211a49bd4ecdf3659ac /test/bitmask.cpp | |
| parent | 9157adfe80dff953687ec364cc612cf45f2b9609 (diff) | |
rewrite bitmask impl
It's slower than the previous version but fixes a bug when stride isn't
a multiple of 8.
It can be improved further by setting `auto& byte` all at once instead
of setting individual bits of multiple bytes in the innermost loop.
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New version Time CPU Iterations
------------------------------------------------------------
Bitmask_mean 1911 us 1893 us 5
Bitmask_median 1911 us 1885 us 5
Bitmask_stddev 2.00 us 18.7 us 5
Bitmask_cv 0.10 % 0.99 % 5
-------------------------------------------------------------
------------------------------------------------------------
Buggy version Time CPU Iterations
------------------------------------------------------------
Bitmask_mean 841 us 841 us 5
Bitmask_median 839 us 837 us 5
Bitmask_stddev 3.29 us 7.80 us 5
Bitmask_cv 0.39 % 0.93 % 5
------------------------------------------------------------
-----------------------------------------------------------
Naive version Time CPU Iterations
------------------------------------------------------------
Bitmask_mean 4006 us 3997 us 10
Bitmask_median 4006 us 3997 us 10
Bitmask_stddev 2.29 us 0.000 us 10
Bitmask_cv 0.06 % 0.00 % 10
------------------------------------------------------------
Diffstat (limited to 'test/bitmask.cpp')
| -rw-r--r-- | test/bitmask.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/test/bitmask.cpp b/test/bitmask.cpp index d0b6c4d8..a1bbd0de 100644 --- a/test/bitmask.cpp +++ b/test/bitmask.cpp @@ -20,7 +20,7 @@ constexpr auto size = Vector2i{21, 52}; void bitmask_test() { - auto img = loader.texture(loader.SCENERY_PATH, "control-panel"_s); + auto img = loader.texture("images/", "bitmask-test1"_s); auto bitmask = anim_atlas::make_bitmask(img); fm_assert(bitmask.size() >= size_t{size.product()}); fm_assert(img.pixelSize() == 4); |