commit | e366e2c3c62d029c84f89f8bce5f22a4778e7d52 | [log] [tgz] |
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author | Shahbaz Youssefi <syoussefi@chromium.org> | Sat Feb 27 01:00:02 2021 -0500 |
committer | Commit Bot <commit-bot@chromium.org> | Fri Mar 05 15:16:44 2021 +0000 |
tree | 2d025607d520e35da44a4dfcaaadc646542f3a64 | |
parent | b23644d38887f24e71153b5312faf2ca41066b76 [diff] |
Vulkan: Keep dynamic buffer's free list trimmed ContextVk's staging buffer never gets a chance to free its free buffer list. During application load time, a large amount of memory may be allocated from this buffer to stage texture updates and they would remain throughout the life of the application. This change ensures that the free buffer list doesn't grow unbounded. In the Manhattan trace, this saves >1GB of memory on Linux. There are now three policies for vk::DynamicBuffer: - Always reuse buffers: This is useful for dynamic buffers that make frequent small allocations, such as default uniforms, driver uniforms, default vertex attributes and UBO updates. - Never reuse buffers: This is for situations where the buffer is unlikely to be used after some initial usage, such as texture data upload or vertex format emulation (as the conversion result is cached, so it's never redone). - Limited reuse of buffers: For the staging buffer in the context which is shared by all immutable texture data uploads, it's useful to keep a limited number of buffers (1 in this change) to support future texture streaming while allowing a large number of buffers allocated in a burst to be discarded. Bug: angleproject:5690 Change-Id: Ic39ce61e6beb3165dbce4b668e1d3984a2b35986 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2725499 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Tim Van Patten <timvp@google.com> Reviewed-by: Charlie Lao <cclao@google.com> Reviewed-by: Jamie Madill <jmadill@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, 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.
Direct3D 9 | Direct3D 11 | Desktop GL | GL ES | Vulkan | Metal | |
---|---|---|---|---|---|---|
OpenGL ES 2.0 | complete | complete | complete | complete | complete | complete |
OpenGL ES 3.0 | complete | complete | complete | complete | in progress | |
OpenGL ES 3.1 | incomplete | complete | complete | complete | ||
OpenGL ES 3.2 | in progress | in progress | in progress |
Direct3D 9 | Direct3D 11 | Desktop GL | GL ES | Vulkan | Metal | |
---|---|---|---|---|---|---|
Windows | complete | complete | complete | complete | complete | |
Linux | complete | complete | ||||
Mac OS X | complete | in progress | ||||
iOS | planned | |||||
Chrome OS | complete | planned | ||||
Android | complete | complete | ||||
GGP (Stadia) | complete | |||||
Fuchsia | complete |
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:
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, Vulkan 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
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