kc3-lang/angle

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  • Hash : f2f17bad
    Author : Yuxin Hu
    Date : 2022-08-31T17:40:22 

    Vulkan: Fix Framebuffer Fetch Test Failure

If permanentlySwitchToFramebufferFetchMode is enabled,
mIsInFramebufferFetchMode will remain true.
If we switch from a non-framebuffer fetch program to
a framebuffer fetch program, the condition
if (mIsInFramebufferFetchMode != hasFramebufferFetch)
doesn't hold, and we will miss setting the dirty bit
in OnColorAccessChange, and miss updating the color
attachment resourceAccess value.

This causes test failure when running the test
FramebufferFetchES31.DrawNonFetchDrawFetchInStorageBuffer_Coherent.
The color attachment resourceAccess remains unused after
the first draw call that uses a program which doesn't read/write
from the framebuffer color attachment. The second draw call uses
a program that needs to read from the framebuffer color attachment,
however, since the color attachment access value is unused, it will
use LoadOpNone, making the color attachment value not availble for
the shader program to read from.

This change fixes the failure by setting the bit dirty
whenever the program uses framebuffer fetch mode, given the condition
that feature permanetlySwitchToFramebufferFetchMode is enabled.

Bug: angleproject:7583
Change-Id: I240381766d75f6e73ea9c20503b2344cc816cbc7
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3864127
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Commit-Queue: Yuxin Hu <yuxinhu@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 in progress
    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:

    • 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 1.5 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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