README

To update the version of SPIRV-Cross used in this project, run the update_spirv-cross.sh script.

The script is located in third_party/spirv-cross/tnt.

From the root of the repository, you can run it like this:

Usage:

./third_party/spirv-cross/tnt/update_spirv-cross.sh <version_tag>

or

./third_party/spirv-cross/tnt/update_spirv-cross.sh --sha <commit_sha>

For example, to update to a specific release:

./third_party/spirv-cross/tnt/update_spirv-cross.sh 2023-08-23

To update to a specific commit:

./third_party/spirv-cross/tnt/update_spirv-cross.sh --sha a1b2c3d4

You can find the latest version number on the SPIRV-Cross releases page: https://github.com/KhronosGroup/SPIRV-Cross/releases

The script will automatically apply the following patches:

• 0001-convert-floats-to-their-smallest-string-representati.patch
• 0002-localeconv-api-level-check.patch

Please be sure to test Filament before uploading your CL.

Filament-specific changes to CMakeLists.txt

The Filament-specific CMakeLists.txt under the tnt directory has the following changes made from spirv-cross's provided CMakeLists.txt:

• Exceptions turned off in favor of assertions
• Removal of installation rules
• Removal of unused spirv-cross libraries
• Removal of the spirv-cross executable
• Removal of spirv-cross test cases
• Added convert_to_smallest_string in spirv_common.hpp and used for float conversion

To see all changes, run the following diff command from the third_party/spirv-cross directory:

diff CMakeLists.txt tnt/CMakeLists.txt