https://bugs.documentfoundation.org/show_bug.cgi?id=171645
--- Comment #7 from BogdanB <[email protected]> --- I bibisected to this commit, but I am not very sure by the result, because in some cases is crashing, in some cases just slow, in the good cases we get the final of the presentation. commit eb4394e3460932011940a1e3c03d5d67d7f45885 Author: Noel Grandin <[email protected]> Date: Mon Aug 18 13:31:30 2025 +0200 tdf#167893 and tdf#167876 weird effects in slideshow this was a little confusing, because the bibisect pointed at one commit, but it was actually an earlier commit which had the bug. It just happened that the later commit made more active use of the code from the earlier commit. The bug was mostly in CanvasCairoExtractBitmapData, which was, I think, largely unused before commit 088a7c7c451321a800ca8d3523a18b6bb93239b7 Author: Noel Grandin <[email protected]> Date: Tue Sep 24 16:18:11 2024 +0200 remove alpha device from OutputDevice At which point some of the optimised paths in slideshow stopped triggering as often (which is a different issue which will need resolving) Also, CanvasCairoExtractBitmapData was largely wrong, returning unpremultipled data when cairo wants premultiplied data, and returning 4-byte RGBA when the calling code was going to tell cairo that the format was 3-byte RGBA. So anyhow, things now work better, and the CanvasCairoExtractBitmapData method is considerably smaller and simpler. Change-Id: I7d668ae08f4caf8dd0d5561a2d94e23e767216d5 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/189867 Reviewed-by: Noel Grandin <[email protected]> Tested-by: Jenkins -- You are receiving this mail because: You are the assignee for the bug.
