Re: [FFmpeg-devel] [PATCH v2 4/5] libswscale: Enable hscale_avx2 for all input sizes.

[Michael Niedermayer <michael@niedermayer.cc>]

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On Thu, Feb 17, 2022 at 11:04:20AM +0100, Alan Kelly wrote:
> ff_shuffle_filter_coefficients shuffles the tail as required.
> ---
>  libswscale/utils.c       | 19 ++++++++++++++++---
>  libswscale/x86/swscale.c |  6 ++----
>  2 files changed, 18 insertions(+), 7 deletions(-)

it seems patch 3 and 4 together fail fate with current git master
(i think 1 & 2 are already applied)

make V=2 fate-checkasm-sw_scale
TEST    checkasm-sw_scale
./tests/fate-run.sh fate-checkasm-sw_scale "fate-suite/" "" "ffmpeg" 'run tests/checkasm/checkasm --test=sw_scale' 'null' '' '' '1' '' '' '' '' '' '' '' '' '' ''
 ffmpeg/tests/checkasm/checkasm --test=sw_scale
Test checkasm-sw_scale failed. Look at tests/data/fate/checkasm-sw_scale.err for details.
checkasm: using random seed 1761410321
MMXEXT:
 - sw_scale.yuv2yuvX [OK]
SSE2:
 - sw_scale.hscale   [OK]
SSE3:
 - sw_scale.yuv2yuvX [OK]
SSSE3:
 - sw_scale.hscale   [OK]
SSE4.1:
 - sw_scale.hscale   [OK]
AVX2:
   hscale_8_to_15__fs_4_dstW_8_avx2 (sw_scale.c:235)
   hscale_8_to_15__fs_4_dstW_24_avx2 (sw_scale.c:235)
   hscale_8_to_15__fs_8_dstW_8_avx2 (sw_scale.c:235)
   hscale_8_to_15__fs_8_dstW_24_avx2 (sw_scale.c:235)
   hscale_8_to_15__fs_12_dstW_8_avx2 (sw_scale.c:235)
   hscale_8_to_15__fs_12_dstW_24_avx2 (sw_scale.c:235)
   hscale_8_to_15__fs_16_dstW_8_avx2 (sw_scale.c:235)
   hscale_8_to_15__fs_16_dstW_24_avx2 (sw_scale.c:235)
   hscale_8_to_15__fs_32_dstW_8_avx2 (sw_scale.c:235)
   hscale_8_to_15__fs_32_dstW_24_avx2 (sw_scale.c:235)
   hscale_8_to_15__fs_40_dstW_8_avx2 (sw_scale.c:235)
   hscale_8_to_15__fs_40_dstW_24_avx2 (sw_scale.c:235)
 - sw_scale.hscale   [FAILED]
 - sw_scale.yuv2yuvX [OK]
checkasm: 12 of 504 tests have failed
tests/Makefile:304: recipe for target 'fate-checkasm-sw_scale' failed
make: *** [fate-checkasm-sw_scale] Error 1





[...]
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

While the State exists there can be no freedom; when there is freedom there
will be no State. -- Vladimir Lenin

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