add size limit for using glyphcache. above that, draw using paths

add size limit for using glyphcache. above that, draw using paths

BUG=
R=bungeman@google.com

Committed: https://code.google.com/p/skia/source/detail?r=9429

[reed1, 2013-06-03 21:47:33]

1. not really optimized yet (though I haven't timed it either)
2. still need to handle measurement APIs on paint to match this limit
3. probably can shared code with paint and scalercontext
    - stdSize
    - folding paint into matrix

[reed1, 2013-06-04 13:48:57]

timed, and at 256, there was only about a 3% slowdown for drawing via paths, so
perhaps that's an OK cutoff for now.

PTAL

[bungeman-skia, 2013-06-04 14:27:58]

Why not? LGTM with hinting flag and comment.

https://codereview.chromium.org/16336024/diff/6001/include/core/SkPaint.h
File include/core/SkPaint.h (right):

https://codereview.chromium.org/16336024/diff/6001/include/core/SkPaint.h#new...
include/core/SkPaint.h:1019: kMaxSizeForGlyphCache       = 256,
It seems odd that these two numbers would be different. This seems to mean that
we go for a smaller size once hitting 256. I suppose it shouldn't make much
difference, it just seems odd.

https://codereview.chromium.org/16336024/diff/6001/src/core/SkDraw.cpp
File src/core/SkDraw.cpp (right):

https://codereview.chromium.org/16336024/diff/6001/src/core/SkDraw.cpp#newcod...
src/core/SkDraw.cpp:1865: SkPaint::kSubpixelText_Flag )
I think you also want kNo_Hinting.

[reed1, 2013-06-04 15:58:22]

PTAL

https://codereview.chromium.org/16336024/diff/6001/include/core/SkPaint.h
File include/core/SkPaint.h (right):

https://codereview.chromium.org/16336024/diff/6001/include/core/SkPaint.h#new...
include/core/SkPaint.h:1019: kMaxSizeForGlyphCache       = 256,
On 2013/06/04 14:27:58, bungeman1 wrote:
> It seems odd that these two numbers would be different. This seems to mean
that
> we go for a smaller size once hitting 256. I suppose it shouldn't make much
> difference, it just seems odd.

update comment.

https://codereview.chromium.org/16336024/diff/6001/src/core/SkDraw.cpp
File src/core/SkDraw.cpp (right):

https://codereview.chromium.org/16336024/diff/6001/src/core/SkDraw.cpp#newcod...
src/core/SkDraw.cpp:1865: SkPaint::kSubpixelText_Flag )
On 2013/06/04 14:27:58, bungeman1 wrote:
> I think you also want kNo_Hinting.

Done.

[bungeman-skia, 2013-06-04 16:05:35]

lgtm

[reed1, 2013-06-04 16:56:33]

Committed patchset #4 manually as r9429 (presubmit successful).