commit c8f520466701a14cf2fb86d3f2d3c70983cb4518
author cdalton <cdalton@nvidia.com> Tue Jul 29 15:25:51 2014 -0700
committer Commit bot <commit-bot@chromium.org> Tue Jul 29 15:25:51 2014 -0700
tree ba37430ec889b9664f5f2f4d59f1c618ff7e72d9
parent a14da251c29a8f9e6db37648e2c41c8bbf0af19b

Incorporate glStencilThenCover* nvpr methods

Adds the glStencilThenCover* nvpr methods to GrGLInterface and starts
using them. When drawing multible paths, this will make it so we only
have to send the index/transform data once. It will also allow the
driver to save time internally.

The glStencilThenCover* methods are a newer addition, so they aren't
available on every driver. In the event that they are not present, we
emulate them using the existing glStencil*/glCover* methods.

BUG=skia:
R=markkilgard@gmail.com, bsalomon@google.com

Author: cdalton@nvidia.com

Review URL: https://codereview.chromium.org/423173004