luke
/
klayout
mirror of https://github.com/KLayout/klayout.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Use multiple drawing workers for image_with_options rendering 

LayoutCanvas::image_with_options always rendered the layout with a
single thread (workers = 0), which serialized image generation even on
views configured for parallel drawing. Now it honors the view's
drawing_workers() count when the view is not in synchronous mode, and
waits for the asynchronous workers to finish before reading back the
rendered bitmaps. This speeds up image export on large layouts while
preserving the original single-threaded behavior in synchronous mode.
This commit is contained in:
Kirill Osipov 2026-06-30 23:09:20 +02:00
parent d352db146f
commit 7d6aa2e728
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/laybasic/laybasic/layLayoutCanvas.cc
View File

@ -855,7 +855,9 @@ LayoutCanvas::image_with_options (unsigned int width, unsigned int height, int l
lay::RedrawThread redraw_thread (&rd_canvas, mp_view);
// render the layout
redraw_thread.start (0 /*synchronous*/, m_layers, vp, resolution, font_resolution, true);
int workers = mp_view->synchronous () ? 0 : mp_view->drawing_workers ();
redraw_thread.start (workers, m_layers, vp, resolution, font_resolution, true);
redraw_thread.wait ();
redraw_thread.stop (); // safety
// paint the background objects. It uses "img" to paint on.