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  • Hash : 23ec0620
    Author : Amirali Abdolrashidi
    Date : 2023-03-23T09:51:53

    Vulkan: Add more data to blob cache header
    
    This is to potentially increase blob cache robustness against
    collisions and partially modified data. This CL adds 7 bytes
    per chunk (8 bytes in total). During decompression, the data
    will be checked in order to determine if the cache data can
    be used.
    
    * Added chunk index to the header. (1 byte)
    * Added CRC16 of the compressed data to the header. (2 bytes)
    * Added the original (uncompressed) data size to the header. (4 bytes)
    
    * Moved kBlobHeaderSize to the anonymous namespace.
    
    * Added the following GN flag to enable CRC calculation for the cache.
      * angle_enable_crc_for_pipeline_cache (only available in debug mode)
      * Corresponds to kEnableCRCForPipelineCache.
      * When it is false, the CRC is set to 0.
    
    Bug: b/246683126
    Change-Id: I9aaf9cda52e0af07a2e1c2d0c39aca407e515701
    Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4378717
    Commit-Queue: Amirali Abdolrashidi <abdolrashidi@google.com>
    Reviewed-by: Charlie Lao <cclao@google.com>
    Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
    

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    Description

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

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    thodg_m kc3_lang_org thodg_w www_kmx_io thodg thodg_l
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  • README.md

  • ANGLE back-ends

    This folder contains shared back-end-specific implementation files. The classes and types in renderer are not specified by GLES. They instead are common to all the various ANGLE implementations.

    See renderer_utils.h for various cross back-end utilties.

    ANGLE Formats

    The ANGLE format class, angle::Format, works as a union between GLES and all the various back-end formats. It can represent any type of format in ANGLE. e.g. Formats in Vulkan that don’t exist in GLES, or DXGI formats that don’t exist in GLES, or Windows/Android surface configs that don’t exist anywhere else.

    The glInternalFormat member of angle::Format represents the “closest” GL format for an ANGLE format. For formats that don’t exist in GLES this will not be exactly what the format represents.

    The back-ends also define their own format tables. See the Vulkan Format table docs and the [D3D11 format table docs][D23D11FormatDocs].

    DXGI Format Info

    DXGI formats are used in both the GL and D3D11 back-end. Therefore the generated info table lives in this common shared location.

    The DXGI info table is generated by gen_dxgi_format_table.py and sources data from dxgi_format_data.json. The main purpose of the table is to convert from a DXGI format to an ANGLE format, where the ANGLE format should have all the necessary information.