kc3-lang/angle

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  • Hash : dc99fc40
    Author : Shahbaz Youssefi
    Date : 2021-01-13T00:21:41 

    Vulkan: Translator pass to monomorphize problematic functions

With array of array of samplers and images, we currently require the
shader*ArrayDynamicIndexing Vulkan features.  With atomic counters, we
require the shaderStorageBufferArrayDynamicIndexing feature.

The above features are required to enable passing opaque uniforms to
functions.  This change introduces a translator pass that monomorphizes
functions that receive atomic counters, or partially subscripted array
of array of samplers or images, etc by removing those arguments and
using the opaque uniform directly.

Follow up changes will include:

- Great simplification to RewriteStructSamplers, and removal of
  RewriteStructSamplersOld.  This will drop dependency to
  shaderSampledImageArrayDynamicIndexing and
  shaderStorageImageArrayDynamicIndexing.
- Great simplification to RewriteAtomicCounters.  This will drop
  dependency to shaderStorageBufferArrayDynamicIndexing.
- Emulation of imageAtomicExchange for r32f formats, but changing the
  qualifier to r32ui.

Note that parts of RewriteStructSampler are obsolete with this change,
but will be refactored as a follow up.

Bug: angleproject:3881
Bug: angleproject:4071
Bug: angleproject:5535
Change-Id: Ifd1435b2a31ebf364815046886aeded60297da79
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2628127
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Tim Van Patten <timvp@google.com>

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  • Git HTTP https://git.kmx.io/kc3-lang/angle.git
    Git SSH git@git.kmx.io:kc3-lang/angle.git
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    Description

    A conformant OpenGL ES implementation for Windows, Mac, Linux, iOS and Android.

    Homepage

    Github
    Users
    		 kc3_lang_org thodg_w www_kmx_io thodg_l thodg thodg_m
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  • 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 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

    Platform support via backing renderers

    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 in progress

    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)

    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.

    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

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