Previously attribute offsets were always computed based on their
position in an attribute array and the stride was determined
by the offset and size of the last attribute.
Now a GP has the option to create attributes with explicit offsets
and specify an explicit vertex stride. All attributes must either
be implicit or explicit (enforced by assert).
GrGeometryProcessor::AttributeSet is now responsible for handling
implicitly determined attribute offsets and strides. The backends
no longer compute them.
Bug: skia:12720
Change-Id: I0211673dc70d4797c2d66b2555d8f5fb430be056
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/484736
Reviewed-by: Greg Daniel <egdaniel@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
6927ab9311