It's possible to trigger this assertion with asyncPaint = true and
bufferRotation != (0, 0). In this case though everything should work fine,
because we didn't start a new paint task, and we should be able to copy over
buffers. So we should be able to remove this assertion.
--HG--
extra : amend_source : d4cb9eddf48e08446469d2e1891f0e9ed3bb85d0
There is one main difference between raster images and vector images
with respect to factor of 2 scaling. Vector images may be scaled
infinitely and so we need to extend factor of 2 scaling to permit
growing instead of just shrinking. Also, we don't want to scale
infinitely, so we should configure a maximum size limit. This size limit
will apply even outside of factor of 2 scaling, and so the caller
(VectorImage) will need to be careful to take this into account.
There is one main difference between raster images and vector images
with respect to factor of 2 scaling. Vector images may be scaled
infinitely and so we need to extend factor of 2 scaling to permit
growing instead of just shrinking. Also, we don't want to scale
infinitely, so we should configure a maximum size limit. This size limit
will apply even outside of factor of 2 scaling, and so the caller
(VectorImage) will need to be careful to take this into account.
Everything that goes in a PLDHashtable (and its derivatives, like
nsTHashtable) needs to inherit from PLDHashEntryHdr. But through a lack
of enforcement, copy constructors for these derived classes didn't
explicitly invoke the copy constructor for PLDHashEntryHdr (and the
compiler didn't invoke the copy constructor for us). Instead,
PLDHashTable explicitly copied around the bits that the copy constructor
would have.
The current setup has two problems:
1) Derived classes should be using move construction, not copy
construction, since anything that's shuffling hash table keys/entries
around will be using move construction.
2) Derived classes should take responsibility for transferring bits of
superclass state around, and not rely on something else to handle that.
The second point is not a huge problem for PLDHashTable (PLDHashTable
only has to copy PLDHashEntryHdr's bits in a single place), but future
hash table implementations that might move entries around more
aggressively would have to insert compensation code all over the
place. Additionally, if moving entries is implemented via memcpy (which
is quite common), PLDHashTable copying around bits *again* is
inefficient.
Let's fix all these problems in one go, by:
1) Explicitly declaring the set of constructors that PLDHashEntryHdr
implements (and does not implement). In particular, the copy
constructor is deleted, so any derived classes that attempt to make
themselves copyable will be detected at compile time: the compiler
will complain that the superclass type is not copyable.
This change on its own will result in many compiler errors, so...
2) Change any derived classes to implement move constructors instead of
copy constructors. Note that some of these move constructors are,
strictly speaking, unnecessary, since the relevant classes are moved
via memcpy in nsTHashtable and its derivatives.
Summary:
The behavior the WG proposed is way more subtle than what that bug implements,
including:
* Implementing two logical overflow longhands.
* Expanding the overflow shorthand to different longhands depending on the
syntax of that.
Meanwhile, Blink hasn't done the swap and will ship the same behavior that we
shipped in Firefox 61 (bug 1453148), that is, overflow-x, then overflow-y.
So I think lacking a clear way forward we should revert this change and preserve
our shipped behavior.
Reviewers: dbaron!
Tags: #secure-revision
Bug #: 1492567
Differential Revision: https://phabricator.services.mozilla.com/D6317
Ran into a couple of test failures because I was leaving
mAttributes empty for empty things like MergeAttributes, and
only setting mType. Since mType is now redundant though, and
since it's the only use of PrimitiveType, I figured I'd just
remove it entirely.
Depends on D4900
Differential Revision: https://phabricator.services.mozilla.com/D6209
--HG--
extra : moz-landing-system : lando
This replaces the hash map of attributes with a tagged union. In
this case, all filter attributes will be stored in line, with the
exception of some more complex attributes which have an internal
nsTArray of floats. This should help avoid all the hashing and
extra heap allocations.
Depends on D4899
Differential Revision: https://phabricator.services.mozilla.com/D4900
--HG--
extra : moz-landing-system : lando
This is a more conservative optimization for bug 1417699. There's no
reason we need to be copying these everywhere, so let's just go ahead
and implement moves.
Differential Revision: https://phabricator.services.mozilla.com/D4899
--HG--
extra : moz-landing-system : lando
The same is done for NEON, and the check folds to nothing when building
when the build target supports SSE2 and runtime detection is not
necessary.
Differential Revision: https://phabricator.services.mozilla.com/D6129
--HG--
extra : moz-landing-system : lando
All but one of the current uses of DEFFILE use `SRCDIR + '/file.def'` to
get a srcdir-relative path anyway, and the other one wants an
objdir-relative path, so using Path makes everything clearer.
This makes it more straightforward to translate the paths for the WSL
build.
I wish I understood a little better what precisely is going on
here. What seems to be the problem is calling glDeleteTextures
too early, but I can't pin down exactly when "too early" is.
In any case I can no longer reproduce the issue with this patch
applied, and I cannot observe any performance degradation, and
it's not a remarkably risky patch, so I'm opting to cut the
investigation short. Any insights would be appreciated though.
Differential Revision: https://phabricator.services.mozilla.com/D6064
--HG--
extra : moz-landing-system : lando
