tree 426710551557f03cc2e82d56aff328d6b2463f43
parent e4f2461113806e3080aeb8bc5637e82d1b3d8295
author egdaniel <egdaniel@google.com> 1471456740 -0700
committer Commit bot <commit-bot@chromium.org> 1471456740 -0700

Fix various issues with framebuffer fetch

This CL does two things. First it fixes a bug of ours where when using
a custom fbFetch variable (es 3.0 and higher), we sometimes overwrite
the out color and then attempt to use it as the dst color later. This is
fixed here by using an intermediate variable.

Secondly I've added a workaround to an andreno fbFetch where reading from
the outColor always returns the original dstColor even if we've overwritten
the value.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2248403003

Review-Url: https://codereview.chromium.org/2248403003