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git-svn-id: http://skia.googlecode.com/svn/trunk@13061 2bbb7eff-a529-9590-31e7-b0007b416f81
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Calculate 8 channels in parallel by using 16-bits to store each channel. Due to the limitation of VQRDMULH, (int16 * int16 * 2 + 0x8000) >> 16, the fast path can only support kernelSize < 128.
8 significant bits are kept at least in each stage, the final error should less-equal than 1.
Pre-fetching memory for X-direction read. In fact pre-fetching memory doesn't help much for Y direction read, since it is a waste to load a cache line for only read 8 bytes.(I left it there to keep the symmetry. pre-fetch is cheap :) )
bench data on Nexus 10
before:
running bench [640 480] blur_image_filter_large_10.00_10.00 8888: cmsecs = 25081.48
running bench [640 480] blur_image_filter_small_10.00_10.00 8888: cmsecs = 25038.04
running bench [640 480] blur_image_filter_large_1.00_1.00 8888: cmsecs = 25209.04
running bench [640 480] blur_image_filter_small_1.00_1.00 8888: cmsecs = 24928.01
running bench [640 480] blur_image_filter_large_0.00_1.00 8888: cmsecs = 17160.98
running bench [640 480] blur_image_filter_large_0.00_10.00 8888: cmsecs = 17924.11
running bench [640 480] blur_image_filter_large_1.00_0.00 8888: cmsecs = 14609.19
running bench [640 480] blur_image_filter_large_10.00_0.00 8888: cmsecs = 14625.91
after:
running bench [640 480] blur_image_filter_large_10.00_10.00 8888: cmsecs = 14848.42
running bench [640 480] blur_image_filter_small_10.00_10.00 8888: cmsecs = 16037.29
running bench [640 480] blur_image_filter_large_1.00_1.00 8888: cmsecs = 14819.55
running bench [640 480] blur_image_filter_small_1.00_1.00 8888: cmsecs = 14563.69
running bench [640 480] blur_image_filter_large_0.00_1.00 8888: cmsecs = 11905.34
running bench [640 480] blur_image_filter_large_0.00_10.00 8888: cmsecs = 11883.85
running bench [640 480] blur_image_filter_large_1.00_0.00 8888: cmsecs = 9576.51
running bench [640 480] blur_image_filter_large_10.00_0.00 8888: cmsecs = 9793.84
BUG=
R=senorblanco@chromium.org, mtklein@google.com, reed@google.com, kevin.petit@arm.com, kevin.petit.arm@gmail.com
Author: zheng.xu@arm.com
Review URL: https://codereview.chromium.org/105893003
git-svn-id: http://skia.googlecode.com/svn/trunk@13036 2bbb7eff-a529-9590-31e7-b0007b416f81
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https://codereview.chromium.org/109403004/)
git-svn-id: http://skia.googlecode.com/svn/trunk@12581 2bbb7eff-a529-9590-31e7-b0007b416f81
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https://codereview.chromium.org/109403004) due to image quality regressions on the N4.
git-svn-id: http://skia.googlecode.com/svn/trunk@12578 2bbb7eff-a529-9590-31e7-b0007b416f81
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Improve a little on Blur
Grouping operations gives a 5-15% speed improvement on a Cortex-A15 based Chromebook.
before:
running bench [640 480] blur_image_filter_large_10.00_10.00 8888: cmsecs = 30887.69
running bench [640 480] blur_image_filter_small_10.00_10.00 8888: cmsecs = 30751.35
running bench [640 480] blur_image_filter_large_1.00_1.00 8888: cmsecs = 30757.92
running bench [640 480] blur_image_filter_small_1.00_1.00 8888: cmsecs = 30673.88
running bench [640 480] blur_image_filter_large_0.00_1.00 8888: cmsecs = 19602.17
running bench [640 480] blur_image_filter_large_0.00_10.00 8888: cmsecs = 20613.81
running bench [640 480] blur_image_filter_large_1.00_0.00 8888: cmsecs = 17855.46
running bench [640 480] blur_image_filter_large_10.00_0.00 8888: cmsecs = 17957.79
after:
running bench [640 480] blur_image_filter_large_10.00_10.00 8888: cmsecs = 27015.75
running bench [640 480] blur_image_filter_small_10.00_10.00 8888: cmsecs = 27148.02
running bench [640 480] blur_image_filter_large_1.00_1.00 8888: cmsecs = 27241.60
running bench [640 480] blur_image_filter_small_1.00_1.00 8888: cmsecs = 27077.44
running bench [640 480] blur_image_filter_large_0.00_1.00 8888: cmsecs = 18458.10
running bench [640 480] blur_image_filter_large_0.00_10.00 8888: cmsecs = 19643.42
running bench [640 480] blur_image_filter_large_1.00_0.00 8888: cmsecs = 16176.73
running bench [640 480] blur_image_filter_large_10.00_0.00 8888: cmsecs = 16450.50
Signed-off-by: Kévin PETIT <kevin.petit@arm.com>
BUG=
R=senorblanco@chromium.org, mtklein@google.com, luisjoseromeroesclusa@hotmail.com
Author: kevin.petit.arm@gmail.com
Review URL: https://codereview.chromium.org/109403004
git-svn-id: http://skia.googlecode.com/svn/trunk@12568 2bbb7eff-a529-9590-31e7-b0007b416f81
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TBR=mtklein
BUG=
Review URL: https://codereview.chromium.org/98373003
git-svn-id: http://skia.googlecode.com/svn/trunk@12490 2bbb7eff-a529-9590-31e7-b0007b416f81
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speedup on Nexus-10.
R=mtklein@google.com, mtklein
before:
running bench [640 480] blur_image_filter_large_10.00_10.00 8888: cmsecs = 33063.23
running bench [640 480] blur_image_filter_small_10.00_10.00 8888: cmsecs = 32800.25
running bench [640 480] blur_image_filter_large_1.00_1.00 8888: cmsecs = 33017.88
running bench [640 480] blur_image_filter_small_1.00_1.00 8888: cmsecs = 32743.35
running bench [640 480] blur_image_filter_large_0.00_1.00 8888: cmsecs = 21024.04
running bench [640 480] blur_image_filter_large_0.00_10.00 8888: cmsecs = 22904.15
running bench [640 480] blur_image_filter_large_1.00_0.00 8888: cmsecs = 18738.08
running bench [640 480] blur_image_filter_large_10.00_0.00 8888: cmsecs = 18798.98
after:
running bench [640 480] blur_image_filter_large_10.00_10.00 8888: cmsecs = 30180.96
running bench [640 480] blur_image_filter_small_10.00_10.00 8888: cmsecs = 29861.90
running bench [640 480] blur_image_filter_large_1.00_1.00 8888: cmsecs = 30178.98
running bench [640 480] blur_image_filter_small_1.00_1.00 8888: cmsecs = 29911.25
running bench [640 480] blur_image_filter_large_0.00_1.00 8888: cmsecs = 19344.35
running bench [640 480] blur_image_filter_large_0.00_10.00 8888: cmsecs = 19957.07
running bench [640 480] blur_image_filter_large_1.00_0.00 8888: cmsecs = 17158.84
running bench [640 480] blur_image_filter_large_10.00_0.00 8888: cmsecs = 17330.73
Review URL: https://codereview.chromium.org/99933004
git-svn-id: http://skia.googlecode.com/svn/trunk@12486 2bbb7eff-a529-9590-31e7-b0007b416f81
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