[carnelian] Improved Scenic frame scheduling

- Use latch point to determine render time.
- Handle missed frames more efficiently by making
  it possible to recover from them immediately.
- This also makes sure we always call present
  after rendering a frame and adding release
  fences. Otherwise, we can get stuck as a result
  of images never being released.
- Don't limit frames in flight beyond the current
  set of render buffers. It's preferred to reduce
  render buffer count if fewer frames in flight
  is desirable.

Test: existing tests and observed improved frame-rate for examples
Change-Id: I2f12d1fe9a241ae67ecdc4dfcf9a7c4773553819
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/541382
Reviewed-by: Rob Tsuk <robtsuk@google.com>
Commit-Queue: David Reveman <reveman@google.com>
1 file changed
tree: 09c22ef0bd5b1d83810fe2e3edd5875aa22f557d
  1. boards/
  2. build/
  3. buildtools/
  4. bundles/
  5. docs/
  6. examples/
  7. garnet/
  8. products/
  9. scripts/
  10. sdk/
  11. src/
  12. third_party/
  13. tools/
  14. zircon/
  15. .clang-format
  16. .clang-tidy
  17. .git-blame-ignore-revs
  18. .gitattributes
  19. .gitignore
  20. .gn
  21. .style.yapf
  22. AUTHORS
  23. BUILD.gn
  24. CODE_OF_CONDUCT.md
  25. CONTRIBUTING.md
  26. LICENSE
  27. OWNERS
  28. PATENTS
  29. README.md
  30. 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.

Read more about Fuchsia's principles.

How can I build and run Fuchsia?

See Getting Started.

Where can I learn more about Fuchsia?

See fuchsia.dev.