Make GrAAConvexPathRender support paths with > 64K verts.

Make GrAAConvexPathRender support paths with > 64K verts.

R=robertphillips@google.com

Committed: https://code.google.com/p/skia/source/detail?r=9118

[jvanverth1, 2013-05-13 18:57:24]

Looks okay. Is there any reason why you went with appending counts to an array
and rendering at the end, rather than rendering immediately when you overflow
2^16 verts?

[bsalomon, 2013-05-13 19:00:31]

On 2013/05/13 18:57:24, JimVV wrote:
> Looks okay. Is there any reason why you went with appending counts to an array
> and rendering at the end, rather than rendering immediately when you overflow
> 2^16 verts?

The rules of GrDrawTarget's reserved geometry are such that once you draw from a
reservation you can no longer write to it. (We want the give the driver all the
data at once.)

[robertphillips, 2013-05-13 19:18:04]

lgtm?

https://codereview.chromium.org/15120004/diff/4/gm/convexpaths.cpp
File gm/convexpaths.cpp (right):

https://codereview.chromium.org/15120004/diff/4/gm/convexpaths.cpp#newcode128
gm/convexpaths.cpp:128: fPaths.push_back().moveTo(0, 0);
i = 1?

https://codereview.chromium.org/15120004/diff/4/src/gpu/GrAAConvexPathRendere...
File src/gpu/GrAAConvexPathRenderer.cpp (right):

https://codereview.chromium.org/15120004/diff/4/src/gpu/GrAAConvexPathRendere...
src/gpu/GrAAConvexPathRenderer.cpp:630: kPreallocSegmentCnt = 512 /
sizeof(Segment),
2?

[robertphillips, 2013-05-13 19:18:25]

make that - lgtm

[bsalomon, 2013-05-13 19:26:06]

https://codereview.chromium.org/15120004/diff/4/gm/convexpaths.cpp
File gm/convexpaths.cpp (right):

https://codereview.chromium.org/15120004/diff/4/gm/convexpaths.cpp#newcode128
gm/convexpaths.cpp:128: fPaths.push_back().moveTo(0, 0);
On 2013/05/13 19:18:05, robertphillips wrote:
> i = 1?

Done

https://codereview.chromium.org/15120004/diff/4/src/gpu/GrAAConvexPathRendere...
File src/gpu/GrAAConvexPathRenderer.cpp (right):

https://codereview.chromium.org/15120004/diff/4/src/gpu/GrAAConvexPathRendere...
src/gpu/GrAAConvexPathRenderer.cpp:630: kPreallocSegmentCnt = 512 /
sizeof(Segment),
On 2013/05/13 19:18:05, robertphillips wrote:
> 2?

it's just 2 ints per cnt of stack space, so 4 takes up 32 bytes of stack.

[bsalomon, 2013-05-14 14:20:44]

Committed patchset #3 manually as r9118 (presubmit successful).