Simon Hull c15383c510 Images: an image zoomed in on has its colours made only for the tiles in view (#4155) ...

From about 50% zoom on the file of #4155, the pixels drawn are the full 141-megapixel photo,
and in a CMYK document they were separated into ink planes (or colorized, or proofed) whole
for every view: 8 to 9 s of white canvas a zoom step.

When the pixels drawn are larger than a 1,024-pixel tile, their colours are made again for the
frame and part of them is out of view, only the tiles in view are made, each kept under its own
key (`ImageKey::tile`), and drawn together as one pixmap so their edges don't show. The colours
are made pixel by pixel, so the result is the same as for the whole image. CMYK images painting
their own inks are still made whole.

Zooming in to 50%, 100% and 200% on that file went from 9.0, 8.6 and 8.7 s to 0.78, 0.05 and
0.05 s (M3 Pro, one run each), with the same pixels on screen.

2026-11-06 07:23:32 +07:00

..

images.rs

Images: an image zoomed in on has its colours made only for the tiles in view (#4155)

2026-11-06 07:23:32 +07:00

nodes.rs

Images: a colorized image's missing-link placeholder shows in its own colors

2026-11-05 23:25:05 +07:00

paint.rs

Preserve raster coverage of thin curved strokes

2026-11-05 20:00:21 +07:00

text.rs

Images: a reduced image is shrunk before it is separated into ink planes (#4155)

2026-11-06 04:02:47 +07:00