Uniforms in the general case can be multiple floats, so
we expose a small struct to provide information about all
uniforms (including the built in ones like "dt") as well
as effectUniforms and particleUniforms which return Float32Arrays
bound to the WASM memory containing those unifroms.
Thus, by modifying the Float32Array, one can directly affect
the particle/effect properties.
This allows us to expose sliders on particles.skia.org
(https://skia-review.googlesource.com/c/buildbot/+/272398)
Change-Id: Ie390f3d2dc571ee4ebaab59a7fa1b7b2dc24d871
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/272377
Reviewed-by: Brian Osman <brianosman@google.com>
Currently just for image drawable, but going to use this for
references to other kinds of data in bindings, too.
Change-Id: Ic6673530013337bbaadd2d3f1c040626ec24ffb8
Bug: skia:9513
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/256776
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Kevin Lubick <kjlubick@google.com>
