This CL teaches the Sky compositor to record an SkPicture instead of just
drawing in immediate mode. Using an SkPicture will let us experiment with
various optimizations in Skia that preprocess the SkPicture before translating
the Skia commands to GL commands.
This CL also refactors the "display delegate" system now that we can hand off
an SkPicture to a rasterization backend. The new design requires fewer
backpointers and removes the static display delegate factory.
R=eseidel@google.com
Review URL: https://codereview.chromium.org/854303002
-Add a --testing flag to sky_viewer and cause it to paint into an
SkBitmap instead of a ganesh surface so we can get the pixels out.
-Add GetPixelsForTesting to layer.cc to actually grab out the pixels.
-Add a reftest and a mismatch reftest. They need a setTimeout after
the load event. Unclear why or what the right fix is. Maybe we should
give internals some way to force the paint? If we don't have the
setTimeout, we paint a white page (so we do a paint, but with no
content).
-Add a DisplayDelegate to Layer so that Viewer can decide whether
to use the real ganesh backend or the SkBitmap one without littering
the whole code-base with is_testing bools and logic.
R=esprehn@chromium.org
Review URL: https://codereview.chromium.org/797063002
Turns out we need to reset the context before switching back to drawing with
Ganesh (i.e., call resetContext on the GrContext) to clean out whatever state we've
changed in the GL context. Now the city-list and the flights-app demos work.
R=esprehn@chromium.org
Review URL: https://codereview.chromium.org/752653002
