Assembly optimized 4 blittering related functions:

S32A_D565_Opaque
S32A_Opaque_BlitRow32
nofilter_gether
S32A_Blend_BlitRow32

* S32A_D565_Opaque:

Use neon instructions to optimize BLIT routine which operates on
32-bit source ARGB pixel and 16-bit destination RGB pixel. Here,
we process 16-pixels in an iteration. We use regular (32-bit)
arm instructions when number of pixels is less than 16 or the
architecture doesn't support SIMD/NEON instructions. When alpha
value is 255, this version of BLIT routine performs 35% better
in comparison to S32A_D565_Opaque_neon routine.

* S32A_Opaque_BlitRow32 and nofilter_gether:

Use neon instructions to optimize BlitRow32 and nofilter_gether
functions for 32-bit source and destination pixel arrays. An improvement
of 76% is observed with neon optimized BlitRow32 function and 6%
improvement is observed with nofilter_gether function.

* S32A_Blend_BlitRow32:

Optimize S32A_Blend_BlitRow32 using neon instructions for armv7
based targets and using regular arm instructions for armv6 based
targets.

This is the consolidated commit from several patches.

Change-Id: Id5aab49656247b9a69b43cfb22fe7a8608f847e5

Apply PLD to blittering functions

Extend software pipelining for S32A_Blending to process 16 points
perloop and per-read points of next loop

Change-Id: Ib7a6a6efb8249b96578e75613683099251dc2a82

Two skia optimizations:

1. Combine S16_opaque_D32_nofilter_DX and clampx_nofilter_trans
2. Change MAX_BUF between mproc and sproc to 1024 from 128

Opt 1 is giving about 8-10 FPS in gmail and facebook apk.
Opt 2 is helping all combinations for shaderspan.

Change-Id: I88dc097ffd52984a7b786e13c70384688f2e1b12

File changes for SKIA Neon optimziation for S32_Opaque_filter_DX

Change-Id: I0e8a0506aca2a8d4ee4f4b6b1aa4dcc9ce9c0329

Fix CTS failure.

Revert opt 2 in the following commit.

Author: Xin Qi <xqi@codeaurora.org>
Date:   Wed Nov 16 10:07:54 2011 -0800

    Two skia optimizations:

    1. Combine S16_opaque_D32_nofilter_DX and clampx_nofilter_trans
    2. Change MAX_BUF between mproc and sproc to 1024 from 128

    Opt 1 is giving about 8-10 FPS in gmail and facebook apk.
    Opt 2 is helping all combinations for shaderspan.

CRs-Fixed: 330807

Change-Id: Iece797781e97918f4c77fc767bf9e6772927d6f3

skia: Fix a bug in clampx_nofilter_trans_S16_D32_DX

When scaling a line, in the case of the last pixel needing to be
duplicated, the beginning of the line is getting clobbered with wrong
value.  This is because dest buffer pointer is not moved forward.  Fix
that by adding pointer update line.

CRs-Fixed: 349571

Change-Id: Id6dc41d7e6bd2b777097f62e788bd2476609a9ae
Skia: Fix path to OpenGL Headers

The path that Skia was pointing to for the OpenGL Headers
was moved to frameworks/native. This patch will also be
submitted to the mainline for Google.

Change-Id: I75d2ce267d5ec202bb2e5e995f25f9ddfba0dc57
Implementing Color32 functions for Neon platforms.

Besides the raw processing improvement provided by Neon, the code uses memory
preteches (pld) which seem to improve performance greatly when dealing with
very large counts.

This was tested using bench where color32 accounts for the majority of the
workload:
bench -match rects_1 -config 8888 -repeat 500 -forceBlend 1
(the forceBlend is there so that the Color32 code does not go through the
special cases where alpha == 0xFF as it would transform color32 into
a sk_memset32.

Numbers averaged over 3 runs:
bench name      | Before | Neon, no pld | Neon with pld | full boost
rrects_1        | 153.9  | 128.3        | 92            | 1.66x
rects_1_stroke_4| 32.8   | 31.4         | 28.45         | 1.15x
rects_1         | 125.35 | 97.2         | 63.59         | 1.97x

Credits: various googletv team members.

Committed on behalf of evannier.
Review URL: http://codereview.appspot.com/5569077/

git-svn-id: http://skia.googlecode.com/svn/trunk@4779 2bbb7eff-a529-9590-31e7-b0007b416f81
Landing arm patch from contributor.

http://codereview.appspot.com/5649055

git-svn-id: http://skia.googlecode.com/svn/trunk@3541 2bbb7eff-a529-9590-31e7-b0007b416f81