Hash :
dbd5d6df
Author :
Date :
2023-02-17T00:00:00
Vulkan: Fix border color adjustment for emulated formats Emulated opaque ETC compressed formats are decoded to RGBA8 so the border color must have its alpha as one. Generalized AdjustBorderColor to enforce opaque alpha for opaque formats and to support both ways, in which ANGLE could emulate LUMA formats. Moved AdjustBorderColor to renderer_utils so it could be used with other backends. Bug: angleproject:5978 Change-Id: I9ec44444fd373b1ca6116ebc4447063a014025ce Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4265514 Commit-Queue: Alexey Knyazev <lexa.knyazev@gmail.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.