kc3-lang/angle

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  • Hash : 5ab2fa96
    Author : Jason Macnak
    Date : 2023-05-12T08:38:19 

    Vulkan: Move texture QFOTs to syncState()

... (and getAttachmentRenderTarget() which is syncState()-like
for deferred clear) so that QFOTs are not actually scheduled until
first use. SurfaceFlinger optimistically creates EGL images and
textures for AHBs in case it does need them in the future.
However, the images and textures may go unused. Prior to this
change, ANGLE would create pending QFOT barriers while importing
AHBs into EGL images and GL textures. However, SurfaceFlinger may
not be doing any "real work" (other than repeatedly creating and
destroying EGL images and GL textures) which would result in the
command buffers containing the QFOTs being flushed. This can
result in a large build up of unreleased memory (as the
VkDeviceMemory would still be kept alive by the reference from
the unflushed QFOT command buffer) and lead to the low memory
killer nuking processes.

Bug: b/282075554
Test: cts -m CtsOpenGLTestCases
          -t android.opengl.cts.GLSurfaceViewTest
Test: adb shell dumpsys SurfaceFlinger
Test: angle_end2end_tests
          --gtest_filter=ImageTestES3.AHBImportReleaseStress/ES3_Vulkan
Change-Id: I7776abb2c6f834e96aa3926c26e77c53352ee561
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4527437
Commit-Queue: Jason Macnak <natsu@google.com>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>

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  • 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
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    		 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, 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 complete
    OpenGL ES 3.1 incomplete complete complete complete
    OpenGL ES 3.2 in progress in progress in progress

    Additionally, OpenGL ES 1.1 is implemented in the front-end using OpenGL ES 3.0 features. This version of the specification is thus supported on all platforms specified above that support OpenGL ES 3.0 with known issues.

    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 complete
    iOS complete
    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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