The upcoming WebXR API (Bug 1419190) requires intermediate calculations of real-world space coordinates to have more precision with larger ranges. I expect that double precision matrix and quaternions will also be useful in other graphics and layout work.
It would not be ideal to expand the existing classes to always use double precision, as it would incur a significant performance penalty on certain platforms (eg, Arm). The double-precision variants should be used only when required.
The existing gfx::Matrix4x4 and gfx::Quaternion implementation can be extended with templates to generate both single and double precision variants.
Differential Revision: https://phabricator.services.mozilla.com/D22010
--HG--
extra : moz-landing-system : lando
This patch was generated automatically by the "modeline.py" script, available
here: https://github.com/amccreight/moz-source-tools/blob/master/modeline.py
For every file that is modified in this patch, the changes are as follows:
(1) The patch changes the file to use the exact C++ mode lines from the
Mozilla coding style guide, available here:
https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Coding_Style#Mode_Line
(2) The patch deletes any blank lines between the mode line & the MPL
boilerplate comment.
(3) If the file previously had the mode lines and MPL boilerplate in a
single contiguous C++ comment, then the patch splits them into
separate C++ comments, to match the boilerplate in the coding style.
MozReview-Commit-ID: 77D61xpSmIl
--HG--
extra : rebase_source : c6162fa3cf539a07177a19838324bf368faa162b
Matrix4x4 remains a typedef for Matrix4x4Typed<UnknownUnits, UnknownUnits>.
No client code needed changing, except for forward-declarations of Matrix4x4
as a class (since it's now a typedef).
--HG--
extra : rebase_source : ecd9470b9defcc55cfb9e7dbd26e928a6219c3e5
extra : source : 0fc99b5490830953f37a4d8769e42dad2d10bc6e
The bulk of this commit was generated by running:
run-clang-tidy.py \
-checks='-*,llvm-namespace-comment' \
-header-filter=^/.../mozilla-central/.* \
-fix
