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FredApps
e03d5a1c29
* Render: an isolated CMYK group of any size blends in CMYK, in bands hayro patch (27) blended an isolated DeviceCMYK transparency group in CMYK only up to 2^24 device pixels (a 4096 x 4096 square); a larger one was blended in RGB. Print as image renders a whole page at once, up to 8192 px on the long side, so a page enlarged to 11 x 17 in at 600 dpi (about 43 MP) blended any group covering most of it in RGB, and a print test file's CMYK blend patches drew their X's. The same applied to exporting a large page as an image. A larger group is now blended in bands of whole rows, each within the old limit: both ink passes and the tint conversion run per band, so their memory stays as before, and only the finished group (4 bytes a pixel) is kept whole. Every band is blended before any is drawn, so a group a pass has no tints for is still drawn as before, whole. The regression test lowers the band to 7 rows (set_cmyk_band_pixels, hidden, per thread like set_skip_offscreen_paths) and checks the banded group matches the whole one across an anti-aliased edge, and is CMYK's green where magenta is under black with Difference. * Test: CMYK green through the profile is (0, 166, 81); check green against RGB's magenta