kc3-lang/angle

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  • Hash : 96bd8fdf
    Author : Shahbaz Youssefi
    Date : 2018-11-30T14:30:18 

    Vulkan: Fix format properties queries

When querying format properties (in vk::GetFormatProperties), the
mandatory feature support table was consulted to check whether a number
of texture features are present.  If so, the entry from that table was
returned.  The goal had been to speed up initialization by not issuing
device queries if possible.

That is, when vk::GetFormatProperties was called on a format, if it
supported that select few texture features, the VkFormatProperties entry
from the mandatory table would be returned.

However, that function found its way to other uses (such as querying
buffer format properties, or other image properties beyond the select
few).  As a result, when the VkFormatProperties from the mandatory table
was returned, actual support for these other features was often not
tested and assumed false (unless they happened to be mandatory as well).

This commit reworks the format feature query functions such that the
specific features to be tested are provided when querying the format
properties.  The mandatory table is consulted as before, and if the
entry doesn't contain those features, the device is queried and the
results cached.

Bug: angleproject:2958
Change-Id: I28d046eb63c3bd5173468aa4cb3e4c63c83e67b1
Reviewed-on: https://chromium-review.googlesource.com/c/1357152
Reviewed-by: Tobin Ehlis <tobine@google.com>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

  • Properties

  • 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
    		 thodg_m kc3_lang_org thodg_w www_kmx_io thodg thodg_l
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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 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 in progress
    OpenGL ES 3.0 complete complete in progress not started
    OpenGL ES 3.1 not started in progress in progress not started

    Platform support via backing renderers

    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.

    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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