* wpgu: Initial implementation of PixelBender shader execution
The implementation is split across four crates:
* `ruffle_render` now holds the main PixelBender bytecode parsing
implementation (previously, this was in `ruffle_core`).
* `ruffle_core` holds some helper functions for converting between
AVM2 `Value`s and the PixelBender vector types.
* `naga-pixelbender` (newly created) constructs a Naga `Module`
from parsed PixelBender bytecode
* `ruffle_render_wgpu` sets up the render pipeline for the shader
constructed by `naga-pixelbender`, and actually executes the shader.
The Actionscript-side shader parameters are passed in through uniforms.
This allows us to cache the compiled `naga::Module` and associated
wgpu types inside `ShaderData`, when it's first created. Each invocation
of a `ShaderJob` only needs to create a bind group and render pass.
Limitations:
* Only a few of the PixelBender opcodes are implemented - however, this is
enough to get Stemlands cannon rotation working, as well as a cool
"donut" shader that I found and included as a test.
* PixelBender matrix types are not supported.
* Only BitmapData is supported as an input/output type - Flash Player
also supports using Vector and ByteArray
* ShaderJob execution is always synchronous.
* Adjust comments
* Address review comments
We create a separate child domain, which is accessible
from the Stage and the root movieclip.
This prevents ActionScript from loading classes into the
special playerglobals domain (Domain.parentDomain is modified
to return null instead of the playerglobals domain when applicable),
so the native method lookup logic will never run for user code.
This lets us print the full error message and stack stacke
in contexts where an Activation is not available, including
the `Debug` impl.
The 'name' and 'error' fields are accessed using hardcodd slot
ids. This is pretty hacky, but will work until we have better
handling of slot properties.
We now support deleting named children, as well as attributes.
Additionally, I've fixed our handling of `XML.parent()` - we now
properly set the parent when a child is created, and clear the parent
when `delete` is used.
If a child named 'foo' is removed by the timeline (without
having been previous added/removed from the timeline by ActionScript),
then the 'foo' field in the parent will be set to null. This occurs
even if the 'foo' field in the parent is not currently set to
the child 'foo' (e.g. 'this.foo = someOtherObject' was executed by
ActionScript).
- we can now get a `&RawTable` from a `&HashSet`, meaning we can store a
`HashSet` directly in the interner;
- `RawTable::iter_hash` now allows the removal of already-yielded
elements during iteration, which simplifies `WeakSet::entry`
Previously `last_mouse_position` was updated irrespectively of
whether the dragged object was inside or outside the constraint
box. Change it follow mouse deltas, after clamping is performed.
Fixes#11254.
When we run a 'goto', a weird "nested frame" gets triggered.
Previously, we were only calling `construct_frame` on the target
MovieClip as part of this "nested frame". However, Flash Player
seems to treat this (in some ways) like a normal frame - *all*
objects on the Stage (and orphans) have `construct_frame` called.
In particular, `gotoAndStop`/`gotoAndPlay` is called during
an "enterFrame" event handler, then unrelated objects on the Stage
will have their children constructed during the execution of
`gotoAndStop`/`gotoAndPlay`. The same logic holds for frame scripts.
This fixes a bug in Steamlands, which relies on children on the main
timeline being constructed immediately following a call to `gotoAndStop`
on an orphan (originally triggered from an "enterFrame" handler).
When we iterate over the orphan list to run frame lifecyle methods,
the orphan list may be modified (e.g. an event listener creates a new
orphan object). To ensure that we iterate over all of the orphans
originally present, this commit wraps the orphan list in an `Rc`
(just like we do for the render list). Modifications to the list use
`Rc::make_mut`, and iteration operates on a clone of the `Rc`.
QName can contain characters like '.' and '<' as part of the
package or class name (though this requires editing the SWF
or using a nonstandard compiler). This broke our attempt to parse
generic type paramters by looking for '.<'
Instead, our 'Vector' special casing now operates on the unparsed
'AVMString' name, instead of attempting to construct a 'QName'.
This means that we don't need to handle generic paramters at
all for obfuscated names (which will never start with '__AS3__'
or 'Vector.<')
This fixes a bug in Red Ball 4v3, which has an obfuscated class
'!D.<H'
If we have two PlaceObject tags in the same frame with the same depth,
only the first one actually places an object. The second one is ignored
(Flash Player logs a warning).
There are only a few places where we actually need to use the
`caller_domain`, so we don't actually need it available for most native
method calls. This means that `Activation::from_nothing` can be used
in the vast majority of cases without causing a panic later on.
We now parse PixelBender bytecode, and populate the parameters
from the bytecode on `ShaderData`. This is enough to progress
Steamlands, which needs to access dynamically set properties
on `ShaderData`
Bytecode execution is not implemented yet.
When we create a DisplayObject from ActionScript, we should always
run `construct_frame` on it, regardless of what frame phase we
are currently in.
This fixes a regression in Fancy Pants World 4 Part 1, where entering
the first door produced an error.
Flash Player performs `x + width` and `y + height` as floating
point operations before `round_to_even`. This affects the extent
covered by a `Rectangle` in various BitmapData methods, as the sum
of two values might be large enough to be rounded up to a larger
value (when rounding `x` and `width` individually would have
produced a smaller overall extent).
These are directly set on the underlying navigator's HTTP
request type, and get printed out in our test navigator backend.
No validation of the header names is performed - on web, this will be
enforced by the browser.
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