| Time |
Nickname |
Message |
|
00:30
🔗
|
|
fzzzy has joined #jsmess |
|
03:17
🔗
|
|
DLudwig has quit IRC (Quit: ZNC 1.6.5+deb2build2 - http://znc.in) |
|
03:18
🔗
|
|
binji has quit IRC (Read error: Operation timed out) |
|
03:27
🔗
|
|
DLudwig has joined #jsmess |
|
04:45
🔗
|
|
fzzzy has quit IRC (My MacBook Pro has gone to sleep. ZZZzzz…) |
|
09:05
🔗
|
|
binji has joined #jsmess |
|
13:34
🔗
|
|
binji has quit IRC (Read error: Operation timed out) |
|
15:57
🔗
|
|
fzzzy has joined #jsmess |
|
16:45
🔗
|
|
binji has joined #jsmess |
|
18:44
🔗
|
|
fzzzy has quit IRC (My MacBook Pro has gone to sleep. ZZZzzz…) |
|
19:30
🔗
|
|
fzzzy has joined #jsmess |
|
21:02
🔗
|
|
icculus has joined #jsmess |
|
21:02
🔗
|
icculus |
Hello, Mr Scott pinged me. |
|
21:02
🔗
|
icculus |
I’m about to drive home from my in-laws’ house, but tell me what you need and I’ll dive in tonight. |
|
21:06
🔗
|
bai |
hey icculus, welcome back. we did a technical write-up of the issue since you were last here, not sure if you've had a chance to check that out yet or not |
|
21:06
🔗
|
bai |
https://docs.google.com/document/d/1FHmn1kO3PGYYCRJejZsZMFk_BxWer_pOaTUANRFroM8/edit?usp=sharing |
|
21:08
🔗
|
bai |
got some good suggestions from people on how they solved similar problems in the past, I think we have a pretty clear idea of what needs to be done now, just gotta find someone who has the time to knuckle down and get their hands dirty |
|
22:02
🔗
|
icculus |
bai: was there any code written, or is it just the suggestions so far? |
|
22:04
🔗
|
icculus |
and if no code was written yet, which approach are people leaning towards? |
|
22:05
🔗
|
bai |
no code since the initial prototypes which this analysis is based on. a breakdown of where I think the code changes should be, but some of this stuff is stretching my knowledge of the low-level systems |
|
22:05
🔗
|
icculus |
(I suspect that the “find some way to disable usleep()” in that doc is the most correct approach, but definitely not the easiest) |
|
22:06
🔗
|
bai |
what we're thinking is something along the lines of making usleep() a no-op, and possibly using setjmp() / longjmp() to restore execution state and resume where we left off next time our async handler is called |
|
22:06
🔗
|
bai |
there is a chance that mame is architected in such a way that that's not even necessary though |
|
22:07
🔗
|
icculus |
yeah, in a perfect world, we’re going to want to avoid that setjmp, too |
|
22:07
🔗
|
bai |
in this case, its sleeps are, as far as I can tell, entirely for the purposes of frame limiting, which is already being done with rAF |
|
22:08
🔗
|
bai |
so as long as disabling the sleep call doesn't mess with MAME's timing, it may be easier than we suspect |
|
22:08
🔗
|
icculus |
yeah |
|
22:08
🔗
|
icculus |
Surely it has to deal with PCs that sync-to-vblank already |
|
22:08
🔗
|
icculus |
or an overloaded windows machine that sleeps too long |
|
22:09
🔗
|
bai |
once I retraced my code I did find that there is an allowed_to_sleep boolean that gets set based on various parameters inside of the throttle_until_time function |
|
22:09
🔗
|
icculus |
ok, I’ll poke at it tonight |
|
22:09
🔗
|
icculus |
Is there a ROM for some arcade machine that’s useful for testing? Some pirated Pac-Man or something? |
|
22:09
🔗
|
bai |
so that's another route to explore, what happens if we change whatever values cause that to be false |
|
22:10
🔗
|
bai |
I normally use pirated pacman, SketchCow can probably give you a link to something that's kosher and also a good test of whether our improvements have helped. what do we use for stress testing audio, Mr. Do? |
|
22:11
🔗
|
bai |
pacman is fine as a "does this work at all" but it's not pushing the system at all, I can run it at like 500% speed |
|
22:11
🔗
|
icculus |
it was just an example. :) |
|
22:12
🔗
|
bai |
I think this is the one he likes to use for testing https://archive.org/details/arcade_mrdo |
|
22:12
🔗
|
bai |
hmm, marked as stream-only :( |
|
22:13
🔗
|
bai |
https://cors.archive.org/cors/arcade_mrdo/mrdo.zip |
|
22:13
🔗
|
zino |
If you are looking for public domain-ish ROMs them the entire Vectrex library was released as such after they died. |
|
22:15
🔗
|
zino |
No idea if anyoine has made items of them or if that was what you meant with "kosher". |
|
22:18
🔗
|
bai |
yeah, legally speaking :) |
|
22:20
🔗
|
bai |
jaguar is the ultimate stress test, once we prove that the system can run a regular game at 100% speed steady using whatever changes we end up making then we'll see how it helps on the real heavyweight stuff |
|
22:20
🔗
|
bai |
jaguar can hit 100% speed in a beast-mode gaming rig, but on anything less we normally see int he range of 60-80% speed |
|
22:21
🔗
|
bai |
on* |
|
22:22
🔗
|
bai |
it's hard to say whether this change will help much on systems that run < 100% execution speed, but hopefully it'll at least yield a bit more time to the browser to handle things like audio |
|
22:28
🔗
|
icculus |
ok, I grabbed mrdo.zip |
|
22:28
🔗
|
icculus |
I have to get in the car now, but I’ll report back. |
|
22:29
🔗
|
|
icculus has quit IRC (icculus) |
|
23:18
🔗
|
|
fzzzy has quit IRC (My MacBook Pro has gone to sleep. ZZZzzz…) |