From 9695cb098c784792af79c22d46a17f7bc7247d33 Mon Sep 17 00:00:00 2001 From: Gabriel Schneider Date: Tue, 22 Sep 2026 17:43:57 -0300 Subject: Repaint PDF highlights by row, send rasters by shared memory, and animate messages PDF highlights (hover preview, search, selection) are baked into page rasters, and any change re-rendered the whole page with MuPDF; the TTY then re-sent it as base64 (4.7 MB a page), the GUI as a new texture. Worse, a pointer motion over a PDF invalidated the page even when no preview was shown, so every motion paid that. Now: - A raster whose baked highlight set equals the wanted one is left alone. - A highlighted page keeps its clean rows (before highlights and tint); a change repaints only the rows of quads that differ, running MuPDF's highlight pass (pardes_pdf_paint_highlights) over those clean rows and tinting them: the operations a full render performs, so the pixels are identical. MuPDF band renders are NOT bit-identical to a whole page (edge rows, resampled images), so they are never used to patch; the comment claiming otherwise is corrected. - ImagePlace.patch hands shells the changed rows; the GUI uploads just those rows into the texture it holds. - The TTY probes kitty shared memory (t=s) with an id vaxis never reaches and sends rasters as a /dev/shm name when the terminal reads it; direct base64 otherwise (ssh). - Shells that take row patches (GUI, TTY with shm) repaint a selection while it is dragged instead of only on release. Latency elsewhere: - TTY: an animating frame no longer sleeps 16 ms blind; a tick thread posts into the input queue, so input inside the frame is handled at once. - TTY and GUI: queued pointer motions coalesce to the last. - GUI: a skipped swapchain image re-arms the frame (3 retries); animations still tick while nothing presents. - Editing: the line index is carried across an edit instead of rebuilt from a scan of the whole file per keystroke. Messages fall into their row (ease-in; the GUI slides the band out from under the tagline, a terminal fades it), stay until the next input as before, linger MessageLinger ms (default 800), and dissolve (ease-out). MessageAnimation toggles it; both are settings, in Config and startup files. The snapshot harness pins the old behaviour. The detached server now ticks animations. A restored terminal comes back live: the old screen and scrollback (dumped as clean VT by ghostty's formatter, replayed at the new size; older dumps fall back to their rendered text), a dim "restored history" marker, then a new shell in the directory it was in. Right-click on a line number in a file pane looks at that line (a sticky context header's number included). Measured with an external pty driver (TTY), an in-process fence trace (GUI, PARDES_TEST_LATENCY), and test/pdf_pointer_bench.zig (pixel identity against the baseline and a whole-page oracle); balanced A/A/B rounds, paired per-round statistics. Messages stack: each event gets its own row and its own fall, linger and dissolve; a line keeps its row until it leaves and a new one fills the first free row. Announcements and statuses are replaced in place, not stacked. MessageFall, MessageDissolve and DumpDir are settings Config reports. Co-Authored-By: Claude Opus 5.5 (1M context) --- test/snapshot.zig | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'test/snapshot.zig') diff --git a/test/snapshot.zig b/test/snapshot.zig index 7cc5eb91..bdabb56e 100644 --- a/test/snapshot.zig +++ b/test/snapshot.zig @@ -569,7 +569,9 @@ fn runScript(arena: std.mem.Allocator, exe_z: [:0]const u8, script_path: []const try mkdir(arena, config_home, false); const pardes_config = try std.fmt.allocPrint(arena, "{s}/pardes", .{config_home}); try mkdir(arena, pardes_config, false); - try eh.writeFile(try std.fmt.allocPrintSentinel(arena, "{s}/init", .{pardes_config}, 0), "Shell bash\n"); + // Messages leave the moment they are dismissed, as goldens have always + // recorded: a linger or a dissolve is time, and time cannot be a golden. + try eh.writeFile(try std.fmt.allocPrintSentinel(arena, "{s}/init", .{pardes_config}, 0), "Shell bash\nMessageAnimation off\nMessageLinger 0\n"); _ = setenv("TERM", "xterm-256color", 1); _ = setenv("LC_ALL", "C", 1); // a wall clock cannot live in a golden; everything that would print one -- cgit v1.3