wgpu requires buffer copy sizes and offsets to be 4-byte aligned.
Unfortunately, ActionScript can perform 2-byte aligned uploads
into an IndexBuffer3D.
To support this, we now keep a copy of the IndexBuffer3D on the CPU.
When performing an upload to the buffer, we round the offset down
and the size up to the nearest 4-byte aligned value. The cpu buffer
is used to fill out the write with existing data, so that we don't
corrupt the contents of the GPU buffer.
To avoid introducing a new RefCell, I've changed IndexBuffer3D
to use a `Box` instead of an `Rc` to store the trait object.
This allows us to pass a mutable reference down to the backend.
Early class construction is tricky - `Object` defines properties
that need to get copied into subclass instance vtables, but `Class`
defines `prototype`, which needs to be copied into the *class* vtable
of `Object`.
To accomplish this, I've split out instance vtable initialization
into a separate `init_instance_vtable`. We call
`object_class.init_instance_vtable` before
`class_class.init_instance_vtable`, but do things in the opposite
order for `into_finished_class` (`class_class.into_finished_class` is
called before `object_class.into_finished_class`)
It's possible to have a DefineSprite tag with multiple frames,
but with a corresponding SymbolClass that directly extends
`Sprite` (and therefore does *not* extend `MovieClip`). When this
happens, Flash Player stops after the first frame.
Doing `super.someNonGetter` gives you back a function object.
We were previously attempting to call normal methods as though
they were getters. Additionally, we were failing to properly
get the property from the superclass vtable.
If a SWF contains multiple DefineFont tags with the same
font name (but different font IDs), the first tag will win
when a font is looked up by *name*. This affects the behavior
of EditText objects, which can have embedded HTML like
`<font face="MyFontName">` which performs a font lookup by name.
This fixes Fancy Pants World 4 Part 3, which contains two
DefineFont3 tags with the name FancyFont. The second font is
missing many glyphs, so using it causes us to be unable to
render the squiggle and life count text.
When we receieve a nonzero 'antiAlias' parameter, we create
create a non-multisampled resolve buffer to use with WGPU.
Several tests were already requesting antialiasing, so their
output images are now anti-aliased without any changes to
the tests themselves.
If you use a `Loader` to load an SWF containing a class that shadows
an already-defined class, the class definition from the Loader SWF
will be ignoredin favor of the already-defined class. This commit
applies this log to symbol classes as well - the symbol registry for the class
should continue to point to the existing MovieClip in the parent.
This results in the child SWF instantiating the class from the parent
SWF when the child places the affected movie clip on the timeline.
This fixes a bug in Fancy Pants World 4 Part 3, where the sub-level
SWF was replacing the symbol class entry for the parent 'shipInteract'
class with the dummy clip provided in the sub-level SWF (instead
of continuing to use the correct clip from the parent SWF).
Previously, we were scaling down the source image to fit into
the smaller sourceRect, instead of cropping at the original scale.
This broke the background textures in Fancy Pants World 4 Part 2,
as the scaled-down output image resulted in a smaller rectangle
being returned from 'getColorBoundsRect'
We now crop the image by properly constructing the UV-coordinate
transformation matrix. We were also using the wrong value for the
'destPoint' y coordinate, which I fixed.
This slightly changes the image output of two tests - the new images
now more closely match the Flash output.
Calling `Hash::write_bytes` isn't guaranteed to be equivalent to a
sequence of `Hash::write_u8`.
Additionally, make sure the hash is truly prefix-free by hashing the
length first.
This was a leftover from before we started usiung vec4 everywhere
for compatibility with AGAL. There are a few specific opcodes that
don't need extension, but it doesn't depend on the destination
register.
In the process, I fixed a bug where we were clearing the depth
and stencil buffers with the incorrect value.
This makes Fancy Pants World 4 Part 1 playable to completion
(though there are still some rendering issues that need
to be fixed).
This factors out the early-resolution logic I added in `op_coerce`,
making it useable during paramter resolution as well. This lets
a static initializer reference the containing class in parameter
types, even though the ClassObject hasn't yet been initialized.
We were missing the initial 'set_skip_next_enter_frame(true)'
call, and we weren't properly clearing it in `enter_frame`.
Loaders appear to have the same behavior as MovieClips.
This makes us correctly run the first framescript for the loaded
SWF.
Aaron Hill