Flash supports calling `Sound.play`, `SoundChannel.stop`, and
`SoundChannel.soundTransform` while a sound load is in progress
(e.g. immediately after calling `Sound.load`).
To support this, we queue up information inside `SoundObject`
and `SoundChannelObject` when a load is in progress. When a load
completes, we trigger any queued `Sound.play` and `SoundChannel.stop`
calls, and apply the most recent `SoundChannel.soundTransform`
If we're going to overwrite the CPU pixels with the result of a
GPU operation, make sure the GPU texture is up to date with the
latest CPU pixels. I've also renamed the method to
`overwrite_cpu_pixels_from_gpu` to better reflect how it should
be used.
This is needed by the Newgrounds API. We don't have the ability
to make fake requests to HTTP urls in our test frameworks,
so I haven't added any tests for this. However, I tested locally
that this allows the Newgrounds API to work (and got a medal
in Cloud Wars).
* Take two: Delay reading image back from render backend using `SyncHandle`
This allows us to avoid blocking immediately after a `BitmapData.draw` call.
Instead, we only attempt to use the `SyncHandle` when performing an operation
that requires the CPU-side pixels (e.g. BitmapData.getPixel or BitmapData.setPixel).
In the best case, the SWF will never explicitly access the pixels of
the target BitmapData, removing the need to ever copy back the render backend
image to our BitmapData. If the SWF doesn't require access to the pixels immediately,
we can delay copying the pixels until they're actually needed, hopefully allowing
the render backend to finish processing the BitmapData.draw operation in
the backenground before we need the result.
Now that the CPU and GPU pixels can be intentionally out of sync with
each other, we need to ensure that we don't accidentally expose 'stale'
CPU-side pixels to ActionScript (which needs to remain unaware of
our internal laziness). We now use a wrapper type `BitmapDataWrapper`
to enforce that the `SyncHandle` is consumed before accessing the
underlying `BitmapData.
* core: Skip GPU->CPU sync for source and target BitmapData during draw
* Introduce DirtyState enum
Now that a `Bitmap` always stores a `BitmapData`, we can read the pixels
directly from the `BitmapData`, instead of duplicating them in an
`initial_data` field
This makes `Bitmap` delegate to `BitmapData` for
all of the bitmap-related information (handle, width, and height).
As a result, we now unconditionally store a `BitmapData` in `Bitmap`.
As a result, swapping the underling `BitmapData` instance will
automatically change the properties (and rendered image) of a `Bitmap`.
This required some refactoring in the render backends in order to
get access to a `BitmapHandle` through `BitmapData`.
In future versions of `gc-arena`, the `Debug` impl. of `Gc`
and `GcCell` will print the pointed-to value, which will cause
derived `Debug` impls. to enter an infinite recursion.
As such, this manually implements `Debug` on types wrapping a
`Gc/GcCell` to maintain the current behavior.
Previous behaviour defaulted to undefined and applied the format to the
range [0,0) instead of defaulting to -1 and applying the format to the
full length of the TextField.
This has a few other knock-on effects:
* AVM2 added-to-timeline events are fired by each object after it constructs its AVM2 side. This is opposed to before when we fired them after object instantiation and placement. This also gets rid of a prior hack we had for the AVM2 root movie getting added to the stage - or, more accurately, adopts it for everything.
* The supercall constructor for `DisplayObject` runs `construct_frame` on all children. This matches Flash Player behavior.
NOTE: This currently breaks the `placed_with_name` check, so there's going to be a lot of spurious can't set warnings
`BitmapHandle` now holds `Arc<dyn BitmapHandleImpl>`.
This allows us to move all of the per-bitmap backend data into
`BitmapHandle`, instead of holding an id to a backend-specific
hashmap.
This fixes the memory leak issue with bitmaps. Once the AVM side of a
bitmap (`Bitmap`/`BitmapData`) gets garbage-collected, the
`BitmapHandle` will get dropped, freeing all of the GPU resources
assoicated with the bitmap.
This PR implements core 'stage3D' APIs. We are now able
to render at least two demos from the Context3D docs - a simple
triangle render, and a rotating cube.
Implemented in this PR:
* Stage3D access and Context3D creation
* IndexBuffer3D and VertexBuffer3D creation, uploading, and usage
* Program3D uploading and usage (via `naga-agal`)
* Context3D: configureBackBuffer, clear, drawTriangles, and present
Not yet implemented:
* Any 'dispose()' methods
* Depth and stencil buffers
* Context3D texture apis
* Scissor rectangle
General implementation strategy:
A new `Object` variant is added for each of the Stage3D objects
(VertexBuffer3D, Program3D, etc). This stores a handle to the
parent `Context3D`, and (depending on the object) a handle
to the underlying native resource, via `Rc<dyn
SomeRenderBackendTrait>`).
Calling methods on Context3D does not usually result in an immediate
call to a `wgpu` method. Instead, we queue up commands in our
`Context3D` instance, and execute them all on a call to `present`.
This avoids some nasty wgpu lifetime issues, and is very similar
to the approah we use for normal rendering.
The actual rendering happens on a `Texture`, with dimensions
determined by `createBackBuffer`. During 'Stage' rendering,
we render all of these Stage3D textures *behind* the normal
stage (but in front of the overall stage background color).
We only called `get_bitmap_pixels` when creating a `BitmapData`
for an SWF-provided `Bitmap`. We now store the initial pixels
in `Character::Bitmap`, and use them to initialize a `BitmapData`
when needed.
This lets us simplify the wgpu backend, which no longer needs
to store a `Bitmap` object. In addition to saving space for
`BitmapData` objects that lack an SWF `Bitmap`, this will make
it easier to move data from `bitmap_registry` into `BitmapHandle`
itself.
D.O.s removed by the timeline may only be removed from the depth list
(if they were manipulated by AS3 scripts), but their unload method
would still be called, which is wrong.
This is linked to the legacy DisplayObject::Text, which can
only be created by Flash CS6 (but is allowed in AVM2 swfs).
The 'StaticText' class cannot be constructed from ActionScript.
To support this, I've added support for native initializers to
playerglobal. This allows us to throw an exception in the
ActionScript constructor in Test.as, and do nothing in the native
intiializer (so that we can construct it from a DisplayObject).
I've left StaticText.text unimplemented for now, since it will require
dealing with Glyphs
Co-authored-by: kmeisthax <dcrkid@yahoo.com>