Hash :
23ec0620
Author :
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>
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.
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 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.