98bfcc7ff3
Devices receive the 4x4, but by default they simply downsample it to SkMatrix.
New SkM44 matrix for the impl. It differs from SkMatrix44 in a few ways
- no tracking of "type"
- faster for concat, as it does not use doubles for intermediates
- much simpler API
There are some low-bit differences in some gms, so adding a flag for clients to
stage this change. (due to faster but lower-precision in SkM44::concat)
Performance: running canvas_matrix bench
3x3 version:
167.93 canvas_matrix_3x3 8888
209.97 canvas_matrix_2x3 8888
174.87 canvas_matrix_scale 8888
135.30 canvas_matrix_trans 8888
4x4 version:
116.59 canvas_matrix_3x3 8888
105.40 canvas_matrix_2x3 8888
159.83 ? canvas_matrix_scale 8888
113.47 canvas_matrix_trans 8888
Why faster?
- not tracking matrix_type helps a lot it seems
- faster full concat (no doubles)
Before adding the specialized preConcats...
318.11 ? canvas_matrix_3x3 8888
339.38 canvas_matrix_2x3 8888
383.28 canvas_matrix_scale 8888
251.67 canvas_matrix_trans 8888
Change-Id: I68eac942919fa5418081e789f31710a1e2a752da
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/262056
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>
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