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chromium / angle / angle / refs/heads/chromium/6456
commita96e9197f5384fe36a585eb9ed2feeda89bf70c7[log] [tgz]
authorCharlie Lao <cclao@google.com>Thu Apr 25 17:35:02 2024
committerAngle LUCI CQ <angle-scoped@luci-project-accounts.iam.gserviceaccount.com>Thu May 02 23:59:45 2024
tree7464002230768c8918c1a241a3a8ed12adfaeba6
parente4a12a676c97f1a784f4599e14601236bef72fc1 [diff]
Vulkan: Add RefCountedEvent class and VkCmdSetEvent call

This CL defines RefCountedEvent class that adds reference counting to
VkEvent. CommandBufferHelper and ImageHelper each holds one reference
count to the event. Every time an event is added to the command buffer,
the corresponding RefCountedEvent will be added to the garbage list
which tracks the GPU completion using ResourceUse. That event garbage's
reference count will not decremented until GPU is finished, thus ensures
we never destroy a VkEvent until GPU is completed.

For images used by RenderPassCommands, As
RenderPassCommandBufferHelper::imageRead and imageWrite get called, an
event with that layout gets created and added to the image. That event
is saved in RenderPassCommandBufferHelper::mRefCountedEvents and that
VkCmdSetEvents calls are issued from
RenderPassCommandBufferHelper::flushToPrimary(). For renderPass
attachments, the events are created and added to image when attachment
image gets finalized.

For images used in OutsideRenderPassCommands, The events are inserted as
needed as we generates commands that uses image. We do not wait until
commands gets flushed to issue VkCmdSetEvent calls. A convenient
function trackImageWithEvent() is added to create and setEvent and add
event to image all in one call. You can add this call after the image
operation whenever we think it benefits, which gives us better control.

(Note: Even if forgot to insert the trackImageWithEvent call, it is
still okay since every time barrier is inserted, the event gets
released. Next time when we inserts barrier again we will fallback to
pipelineBarrier since there is no event associated with it. But that is
next CL's content).

This CL only adds the VkCmdSetEvent call when feature flag is enabled.
The feature flag is still disabled and no VkCmdWaitEvent is used in this
CL (will be added in later CL).

Bug: b/336844257
Change-Id: Iae5c4d2553a80f0f74cd6065d72a9c592c79f075
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/5490203
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Charlie Lao <cclao@google.com>
14 files changed
tree: 7464002230768c8918c1a241a3a8ed12adfaeba6
  1. android/
  2. build_overrides/
  3. doc/
  4. extensions/
  5. gni/
  6. include/
  7. infra/
  8. samples/
  9. scripts/
  10. src/
  11. third_party/
  12. tools/
  13. util/
  14. build
  15. buildtools
  16. testing
  17. .clang-format
  18. .gitattributes
  19. .gitignore
  20. .gitmodules
  21. .gn
  22. .style.yapf
  23. .vpython
  24. .vpython3
  25. .yapfignore
  26. additional_readme_paths.json
  27. Android.mk
  28. AUTHORS
  29. BUILD.gn
  30. codereview.settings
  31. CONTRIBUTORS
  32. DEPS
  33. DIR_METADATA
  34. dotfile_settings.gni
  35. LICENSE
  36. OWNERS
  37. PRESUBMIT.py
  38. README.chromium
  39. README.md
  40. WATCHLISTS
README.md

ANGLE - Almost Native Graphics Layer Engine

The goal of ANGLE is to allow users of multiple operating systems to seamlessly run WebGL and other OpenGL ES content by translating OpenGL ES API calls to one of the hardware-supported APIs available for that platform. ANGLE currently provides translation from OpenGL ES 2.0, 3.0 and 3.1 to Vulkan, desktop OpenGL, OpenGL ES, Direct3D 9, and Direct3D 11. Future plans include ES 3.2, translation to Metal and MacOS, Chrome OS, and Fuchsia support.

Level of OpenGL ES support via backing renderers

Direct3D 9Direct3D 11Desktop GLGL ESVulkanMetal
OpenGL ES 2.0completecompletecompletecompletecompletecomplete
OpenGL ES 3.0completecompletecompletecompletecomplete
OpenGL ES 3.1incompletecompletecompletecomplete
OpenGL ES 3.2in progressin progresscomplete

Additionally, OpenGL ES 1.1 is implemented in the front-end using OpenGL ES 3.0 features. This version of the specification is thus supported on all platforms specified above that support OpenGL ES 3.0 with known issues.

Platform support via backing renderers

Direct3D 9Direct3D 11Desktop GLGL ESVulkanMetal
Windowscompletecompletecompletecompletecomplete
Linuxcompletecomplete
Mac OS Xcompletecomplete [1]
iOScomplete [2]
Chrome OScompleteplanned
Androidcompletecomplete
GGP (Stadia)complete
Fuchsiacomplete

[1] Metal is supported on macOS 10.14+

[2] Metal is supported on iOS 12+

ANGLE v1.0.772 was certified compliant by passing the OpenGL ES 2.0.3 conformance tests in October 2011.

ANGLE has received the following certifications with the Vulkan backend:

  • OpenGL ES 2.0: ANGLE 2.1.0.d46e2fb1e341 (Nov, 2019)
  • OpenGL ES 3.0: ANGLE 2.1.0.f18ff947360d (Feb, 2020)
  • OpenGL ES 3.1: ANGLE 2.1.0.f5dace0f1e57 (Jul, 2020)
  • OpenGL ES 3.2: ANGLE 2.1.2.21688.59f158c1695f (Sept, 2023)

ANGLE also provides an implementation of the EGL 1.5 specification.

ANGLE is used as the default WebGL backend for both Google Chrome and Mozilla Firefox on Windows platforms. Chrome uses ANGLE for all graphics rendering on Windows, including the accelerated Canvas2D implementation and the Native Client sandbox environment.

Portions of the ANGLE shader compiler are used as a shader validator and translator by WebGL implementations across multiple platforms. It is used on Mac OS X, Linux, and in mobile variants of the browsers. Having one shader validator helps to ensure that a consistent set of GLSL ES shaders are accepted across browsers and platforms. The shader translator can be used to translate shaders to other shading languages, and to optionally apply shader modifications to work around bugs or quirks in the native graphics drivers. The translator targets Desktop GLSL, Vulkan GLSL, Direct3D HLSL, and even ESSL for native GLES2 platforms.

Sources

ANGLE repository is hosted by Chromium project and can be browsed online or cloned with

git clone https://chromium.googlesource.com/angle/angle

Building

View the Dev setup instructions.

Contributing