kc3-lang/angle

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    Commit

  • Hash : cdab03aa
    Author : shrekshao
    Date : 2019-06-18T17:24:54 

    Add flags to shader translator to emulate gl_BaseVertex and gl_BaseInstance

Adds support for translating gl_BaseVertex and gl_BaseInstance for implementation of
GL_ANGLE_base_vertex_base_instance.

They will only be available in WebGL 2. Since there's no gl_VertexID and
gl_InstanceID in WebGL 1. It won't be very useful to add them to WebGL
1.

Mostly follow pattern of gl_DrawID of GL_multi_draw

BUG=angleproject:3402,chromium:891861

Change-Id: Ifcd990c52d12f6814127b904e61a779b8d382e0c
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1666361
Commit-Queue: Shrek Shao <shrekshao@google.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>

  • Properties

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

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

    Homepage

    Github
    Users
    		 thodg_m kc3_lang_org thodg_w www_kmx_io thodg thodg_l
    Tags

  • 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 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.

    Level of OpenGL ES support via backing renderers

    Direct3D 9 Direct3D 11 Desktop GL GL ES Vulkan
    OpenGL ES 2.0 complete complete complete complete complete
    OpenGL ES 3.0 complete complete complete in progress
    OpenGL ES 3.1 in progress complete complete not started
    OpenGL ES 3.2 planned planned planned

    Platform support via backing renderers

    Direct3D 9 Direct3D 11 Desktop GL GL ES Vulkan
    Windows complete complete complete complete complete
    Linux complete complete
    Mac OS X complete
    Chrome OS complete planned
    Android complete complete
    Fuchsia 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.

    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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