[escher][SCN-1444] Wait for mesh uploads to complete.

This fixes an issue where a "render command buffer" was
not waiting for a "transfer command buffer" to complete
because not all of the semaphores were waited-upon.

This was due to inherent finickiness of Mesh inheriting
from WaitableResource; it was easy to become confused
about whether to take the semaphores from the Mesh or
from the Buffers that it encapsulates.  After this CL,
Mesh no longer inherits from WaitableResource, making
this confusion impossible.

Testing: in addition to the usual tests, added a new test
to paper_shape_cache_unittests.cc which would have detected
this issue.

ES-104 #comment
ES-206 #comment
SCN-1444 #done

Change-Id: I3bc4032aff593c1568c527d2ee3ac5729345b74b
10 files changed
tree: 0cd1ec59950492d0878a4ee8f51aa8b6422a8f8d
  1. boards/
  2. build/
  3. buildtools/
  4. bundles/
  5. docs/
  6. examples/
  7. garnet/
  8. infra/
  9. peridot/
  10. products/
  11. scripts/
  12. sdk/
  13. src/
  14. third_party/
  15. tools/
  16. zircon/
  17. .clang-format
  18. .clang-tidy
  19. .dir-locals.el
  20. .gitattributes
  21. .gitignore
  22. .gn
  23. AUTHORS
  24. BUILD.gn
  25. CODE_OF_CONDUCT.md
  26. CONTRIBUTING.md
  27. LICENSE
  28. OWNERS
  29. PATENTS
  30. README.md
  31. rustfmt.toml
README.md

Fuchsia

Pink + Purple == Fuchsia (a new operating system)

What is Fuchsia?

Fuchsia is a modular, capability-based operating system. Fuchsia runs on modern 64-bit Intel and ARM processors.

Fuchsia is an open source project with a code of conduct that we expect everyone who interacts with the project to respect.

How can I build and run Fuchsia?

See Getting Started.

Where can I learn more about Fuchsia?

See the documentation.