0001773: Better support for some auto slide commands

ID	Project	Category	View Status	Date Submitted	Last Update

0001773	OpenMPT	File Format Support	public	2024-04-08 20:46	2024-04-09 17:15

Reporter	Saga Musix	Assigned To
Priority	normal	Severity	minor	Reproducibility	have not tried
Status	new	Resolution	open

Summary	0001773: Better support for some auto slide commands
Description	For some formats, OpenMPT's loaders do some fixups to cater for automatic slide commands; most of the time this support breaks across any pattern boundaries, though. As yet another format is going to be added to this list (0001762), it really is about time to think about a better mechanism to support auto slides at runtime. Formats and commands that need to be supported: ULT / XMF: Automatic tone portamento 669: Automatic portamento up / down, tone portamento STK: Some SoundTracker variants have automatic volume slides FAR: Command 3 parameter indicates how many rows a slide should last. Also has a similar weird volume slide. GMC: Automatic portamento up / down STP: That's the chaotic one. It has auto portamento up / down, automatic fine portamento up / down, automatic tone portamento, automatic volume slides, automatic vibrato, automatic tremolo.
Tags	No tags attached.

Has the bug occurred in previous versions?
Tested code revision (in case you know it)

Date Modified	Username	Field	Change
2024-04-08 20:46	Saga Musix	New Issue
2024-04-08 20:54	Saga Musix	Description Updated
2024-04-08 21:05	Saga Musix	Relationship added	related to 0001541
2024-04-08 21:05	Saga Musix	Relationship added	related to 0001762
2024-04-09 17:04	Saga Musix	Relationship added	related to 0001543

related to	0001541	new		Farandole Composer tempo and effects are wrong :-(
related to	0001762	resolved	Saga Musix	Game Music Creator (.gmc) support
related to	0001543	new		ULT persistent tone portamento is not persistent.