* Revert "Fix a clang-tidy warning in display_list_canvas_unittests.cc (#37062)"
This reverts commit 709c6735fc7ed34df36cee23805bdaa7f6969774.
* Revert "Create a mechanism to manage layer state (#36458)"
This reverts commit 501916deb19a8303ca2a3a9bb37692a873d4679e.
This is a convenience script for running unit tests locally.
To make this script work, I had to move several test exclusions
from test_suites.yaml (which controls running tests on CQ)
to the tests themselves. I think this is for the best because
it makes running the tests locally with behavior that matches
CQ easier.
Also added fuchsia_tests to build_and_copy_to_fuchsia.sh
so it builds the unit tests .far packages by default.
Tested: Ran `run_unit_tests.sh`, all tests pass. Ran
`build_and_copy_to_fuchsia.sh`, it still builds.
* Implement toGpuImage, a synchronous, GPU-resident version of
Picture.toImage.
This method kicks off asynchronous work on the raster task runner.
If it fails to rasterize, it will synchronously throw later when
the user attempts to draw to a canvas.
This supports several use cases:
- Quickly snapping off an expensive-to-rasterize image for reuse
across multiple frames.
- Applying multi-pass filters to a render target.
This patch amends flutter_tester so that it can produce an image
object, but that image will always be a grey and white four square checkerboard.
Adds support for CanvasKit on Web, which basically already used
this method for its Picture.toImage implementation.
Throws an UnsupportedError for HTML on Web, since any implementation
there would almost certainly be slower than drawPicture.
Specifying the `--enable-impeller` flag will switch the renderer to using
Impeller instead of Skia. On platforms where Impeller is not supported, this
flag is ignored.
The notion of the `flutter::SurfaceFrame` has been augmented. Now, in the
absence of a Skia surface to render to, the surface frame will render into a
display list instead.
Impeller variants of the context and surface variants have been added to
`shell/gpu` and `shell/platform`. The variants prepare surface frames that
don’t/can’t specify a Skia surface thus forcing the surface frame to render to a
display list instead. Then, in the submit callback, they forward the display
list ops to the Impeller display list dispatcher.
This scheme has been chosen as it requires the fewest updates to engine
internals which all depend on Skia data structures. Instead of updating all
call-sites to be Skia neutral, the display list interface itself is being made
graphics package agnostic.
