Mathias Agopian f7a5111106 switch to new morphing API ...

- remove deprecated morphing APIs
- repair gltfio, samples and tests

The new API doesn't allow a MorphTargetBuffer per RenderPrimitive,
instead the MorphTargetBuffer is specified per Renderable.

gltfio separates RenderPrimitives from Renderables, in particular all
RenderPrimitives are created before their Renderable; this was
problematic for this change because all primitives must share
a single MorphTargetBuffer living in the Renderable.

To fix this, we're no longer initializing the morphing paramters
at RenderPrimitive creation, instead we store a reference to the
BufferSlot in the Primtive structure, so that later, when the Renderable
is created we can finally retrieve the BufferSlot and initialize its
morphing paramters, which are not available. The "morphing parameters"
are now expanded to contain the MorphTargetBuffer as before (except now
it's always the same for all the primitives of a Rendrable), as well
as the offset within the buffer and the vertex count.

2024-06-28 12:14:57 -07:00

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