cull glyphs that have far out positions
If a glyph's position is > 32K or < -32K, then it is not
on the device. Don't bother adding it to the GrOp. This
reduces the glyph position from SkIPoint to
Vec<2, int16_t>.
But, if some of the glyphs are dropped, and the blob is
scrolled, then the glyphs may be in range. Add a flag
to track if glyphs were dropped, and force a redraw if
not exactly the same matrix is used to draw.
In addition,
* Rename VertexData to DevicePosition
* Add needed calls to GrGlyphRect
Change-Id: Ifdb8aa86d3da0b69d46c11fce5f33803781d880c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/330622
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
3 files changed
