tree 857a4d40cf4b032f94de79870863b297f1196194
parent a9a4b04a98f9990e4e11b164b2eed37416768f21
author commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> 1385572116 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> 1385572116 +0000

ARM Skia NEON patches - 16/17 - Blitmask

Blitmask: NEON optimised version of the D32_A8 functions

    Here are the microbenchmark results I got for the D32_A8
    functions:

    Cortex-A9:
    ==========
    +-------+--------+--------+--------+
    | count | Black  | Opaque | Color  |
    +-------+--------+--------+--------+
    | 1     | -14%   | -39,5% | -37,5% |
    +-------+--------+--------+--------+
    | 2     | -3%    | -29,9% | -25%   |
    +-------+--------+--------+--------+
    | 4     | -11,3% | -22%   | -14,5% |
    +-------+--------+--------+--------+
    | 8     | +128%  | +66,6% | +105%  |
    +-------+--------+--------+--------+
    | 16    | +159%  | +102%  | +149%  |
    +-------+--------+--------+--------+
    | 64    | +189%  | +136%  | +189%  |
    +-------+--------+--------+--------+
    | 256   | +126%  | +102%  | +149%  |
    +-------+--------+--------+--------+
    | 1024  | +67,5% | +81,4% | +123%  |
    +-------+--------+--------+--------+

    Cortex-A15:
    ===========
    +-------+--------+--------+--------+
    | count | Black  | Opaque | Color  |
    +-------+--------+--------+--------+
    | 1     | -24%   | -46,5% | -37,5% |
    +-------+--------+--------+--------+
    | 2     | -18,5% | -35,5% | -28%   |
    +-------+--------+--------+--------+
    | 4     | -5,2%  | -17,5% | -15,5% |
    +-------+--------+--------+--------+
    | 8     | +72%   | +65,8% | +84,7% |
    +-------+--------+--------+--------+
    | 16    | +168%  | +117%  | +149%  |
    +-------+--------+--------+--------+
    | 64    | +165%  | +110%  | +145%  |
    +-------+--------+--------+--------+
    | 256   | +106%  | +99,6% | +141%  |
    +-------+--------+--------+--------+
    | 1024  | +93,7% | +94,7% | +130%  |
    +-------+--------+--------+--------+

    Blitmask: add NEON optimised PlatformBlitRowProcs16

    Here are the microbenchmark results (speedup vs. C code):

    +-------+-----------------+-----------------+
    |       |    Cortex-A9    |   Cortex-A15    |
    | count +--------+--------+--------+--------+
    |       | Blend  | Opaque | Blend  | Opaque |
    +-------+--------+--------+--------+--------+
    | 1     | -19,2% | -36,7% | -33,6% | -44,7% |
    +-------+--------+--------+--------+--------+
    | 2     | -12,6% | -27,8% | -39%   | -48%   |
    +-------+--------+--------+--------+--------+
    | 4     | -11,5% | -21,6% | -37,7% | -44,3% |
    +-------+--------+--------+--------+--------+
    | 8     | +141%  | +59,7% | +123%  | +48,7% |
    +-------+--------+--------+--------+--------+
    | 16    | +213%  | +119%  | +214%  | +121%  |
    +-------+--------+--------+--------+--------+
    | 64    | +212%  | +105%  | +242%  | +167%  |
    +-------+--------+--------+--------+--------+
    | 256   | +289%  | +167%  | +249%  | +207%  |
    +-------+--------+--------+--------+--------+
    | 1024  | +273%  | +169%  | +146%  | +220%  |
    +-------+--------+--------+--------+--------+

    Signed-off-by: Kévin PETIT <kevin.petit@arm.com>

BUG=
R=djsollen@google.com, mtklein@google.com, reed@google.com

Author: kevin.petit.arm@gmail.com

Review URL: https://codereview.chromium.org/23719002

git-svn-id: http://skia.googlecode.com/svn/trunk@12420 2bbb7eff-a529-9590-31e7-b0007b416f81