commit | 2450d8dd93e468c0285b0987001be415359fe74a | [log] [tgz] |
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author | Jamie Madill <jmadill@chromium.org> | Fri Jan 11 19:41:04 2019 |
committer | Commit Bot <commit-bot@chromium.org> | Fri Jan 11 20:51:10 2019 |
tree | 46174cb7735886357e029cf73f647c521e647fc0 | |
parent | a3b64e867d2a78f5c0438d613618596ba89703f2 [diff] |
Vulkan: Squash Vertex Pipeline info. Instead of using 8 bytes per vertex we can reduce the space used for the divisor to 8 bytes. For larger values than 255 we can emulate the divisor by unrolling the draw call. We will likely need to do this in any case for instanced draws when the instancing extension isn't available. The tighter packing will allow for us to move the viewport and scissor back into the pipeline description. It seems this is much faster than using dynamic state. Every state change that would pull in a new Pipeline would need the viewport and scissor re-applied. It seems these driver calls are costly. Does not improve perf significantly but enables future improvements. Bug: angleproject:3013 Change-Id: I1a41c3acadc6fbd47c7a7b961c706e82f78de936 Reviewed-on: https://chromium-review.googlesource.com/c/1390358 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
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 and 3.0 to desktop OpenGL, OpenGL ES, Direct3D 9, and Direct3D 11. Support for translation from OpenGL ES to Vulkan is underway, and future plans include compute shader support (ES 3.1) and MacOS support.
Direct3D 9 | Direct3D 11 | Desktop GL | GL ES | Vulkan | |
---|---|---|---|---|---|
OpenGL ES 2.0 | complete | complete | complete | complete | in progress |
OpenGL ES 3.0 | complete | complete | in progress | not started | |
OpenGL ES 3.1 | not started | in progress | in progress | not started |
Direct3D 9 | Direct3D 11 | Desktop GL | GL ES | Vulkan | |
---|---|---|---|---|---|
Windows | complete | complete | complete | complete | in progress |
Linux | complete | in progress | |||
Mac OS X | in progress | ||||
Chrome OS | complete | planned | |||
Android | complete | in progress |
ANGLE v1.0.772 was certified compliant by passing the ES 2.0.3 conformance tests in October 2011. ANGLE also provides an implementation of the EGL 1.4 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, Direct3D HLSL, and even ESSL for native GLES2 platforms.
ANGLE repository is hosted by Chromium project and can be browsed online or cloned with
git clone https://chromium.googlesource.com/angle/angle
View the Dev setup instructions.
Join our Google group to keep up to date.
Join us on IRC in the #ANGLEproject channel on FreeNode.
File bugs in the issue tracker (preferably with an isolated test-case).
Choose an ANGLE branch to track in your own project.
Read ANGLE development documentation.
Become a code contributor.
Use ANGLE's coding standard.
Learn how to build ANGLE for Chromium development.
Get help on debugging ANGLE.
Read about WebGL on the Khronos WebGL Wiki.
Learn about implementation details in the OpenGL Insights chapter on ANGLE and this ANGLE presentation.
Learn about the past, present, and future of the ANGLE implementation in this presentation.
Watch a short presentation on the Vulkan back-end.
If you use ANGLE in your own project, we'd love to hear about it!