ScummVM IRC Log - 20 Jan 2017

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[03:38] <snover> bah. i am clearly doing something wrong trying to get lsl6hires subtitle sync working. it calls gameFlags::set and gameFlags::clear to disable/enable subtitles, respectively. i hook in at send_selector and unconditionally replace the selector with clear, but this is not seemingly working at all, inspecting the flags memory still shows the disabled flag is on&
[03:39] <snover> ive got this annoyance and phant1 left for audio sync to be working everywhere
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[09:11] <GitHub132> [scummvm] sev- pushed 2 new commits to master: https://git.io/vMS65
[09:11] <GitHub132> scummvm/master 286a74a Eugene Sandulenko: GRAPHICS: Fix copy/paste errors with MacFont size processing
[09:11] <GitHub132> scummvm/master 76cfde0 Eugene Sandulenko: GRAPHICS: Further work on MacFont font scaling
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[16:22] <WooShell> meow =^.^=
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[17:06] <snover> guh. everything i did was right except i picked the wrong key because i thought the output was in bytes
[17:07] <snover> or maybe not.
[17:15] <snover> this code is just a little crazy.
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[18:04] <snover> oops. i didnt change the selector until after lookupSelector populated funcp in send_selector. problem solved.
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[20:30] <GitHub184> [scummvm] WinterGrascph pushed 5 new commits to master: https://git.io/vMHkS

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[20:34] <wjp> um
[20:35] <wjp> we prefix our commit messages with the engine/component
[20:37] <wjp> WinterGrascph: ^
[20:38] <WinterGrascph> oh boy, long time no commit, i forgot:)
[20:38] <WinterGrascph> How do I fix this?
[20:38] <wjp> too late. You don't
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[20:39] <WinterGrascph> Okay then
[20:39] <wjp> I'm also very puzzled how one commit can randomly add a }
[20:40] <wjp> ah, 0d77642254ec91e97ee0d5aab766c8b4ecedcec5 just doesn't build at all
[20:41] <wjp> please pay closer attention in the future
[20:44] <WinterGrascph> yes, seems like I made all the possible mistakes I could
[20:54] <snover> wjp: i seek your wisdom again to figure out what is the actually correct way to get an appropriate stack pointer when invoking selectors manually. for instance, at https://github.com/csnover/scummvm/commit/f18e781d78df2ca4ba9e2680c859b69cf3a5026a#diff-e28c2e18f48f825cc83abd398bd6a097R650, if you run phant1, open the control panel, open the scummvm launcher and change volumes in the launcher, crash because back().sp is null
[20:55] <snover> so that really doesnt seem like the right way to do it
[20:55] <wjp> hrm
[20:55] <wjp> you're trying to call VM code at all kinds of strange moments :-)
[20:56] <wjp> during load, from the launcher, ... :-)
[20:56] <snover> yeah, i was thinking earlier about how close to the edges i am
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[21:01] <snover> it is perhaps an absence of imagination, but the only other option i could think of is to try to carve out enough bytes to patch scripts with some extra stuff, but in this specific scenario i dont even know that that would help since we are changing volumes outside the program and then need to tell the program to fix up
[21:02] <wjp> a null sp is a bit odd though
[21:02] <wjp> let's see what's going on there
[21:03] <wjp> can I reproduce this from your working branch?
[21:03] <snover> you should be able to, yes
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[21:05] <snover> looks like somebody (me) needs to fix a cast that generates warnings in gcc
[21:05] <snover> just pretend you dont see that&
[21:07] <wjp> I mainly see shadowing warnings
[21:07] <snover> well just pretend you dont see those too ;)
[21:07] <snover> i guess i need to get some older gcc or else this is going to keep happening
[21:11] <wjp> oops, got confused in the ExecStack constructor there for a second. A null sp isn't odd after all
[21:11] <wjp> it's just inside a kernel call
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[21:12] <wjp> I wonder if we should just give that an sp anyway
[21:14] <snover> i guess that means Console::cmdSend will also blow up in the case that the debugger is paused at a kernel call
[21:14] <wjp> can it be?
[21:15] <snover> sure, if someone puts a console->attach(); console->onFrame(); in a kernel call. not that i would ever do that or anything.
[21:15] <snover> or maybe during a bpk
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[21:18] <wjp> so in addKernelCallToExecStack, try setting the third argument to argv + argc
[21:20] <snover> that takes care of the crash
[21:20] <snover> apparently i gotta do more than i am doing to get these silly bars to update
[21:20] <snover> but i can handle that part, at least&
[21:21] <snover> i really dislike how far into the guts of the engine some of these things are, just to get volumes to sync up
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[21:23] <snover> on the upside it forces me to get more familiar with the VM, which will be useful when i get back to figuring out how in the world to make things run in sci3
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[21:55] <snover> ugh, what is going on here
[21:55] <snover> im still concerned this is just scribbling over other memory on the stack
[21:57] <snover> if the control panel is not open the object is still found but looking up the selector fails saying the method is at 0000:0000, though the script that owns the object is still in memory and if i `vo` the object in the debugger the doit selector is at 0032:1478
[21:57] <snover> bbiaw.
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[22:42] <wjp> snover: it's not saying the method is at 0000:0000
[22:42] <wjp> at least not here
[22:42] <wjp> it's failing in a send in midiVolThermo::init
[22:44] <wjp> um
[22:44] <wjp> midiVolThermo::doit, sorry
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[22:44] <wjp> if I'm reading the decompiled script correctly, it's the local "newList_2" of script 910, which gets initialized in midiVolThermo::init and reset in chap2Inset::dispose
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[23:05] <snover> wjp: well, that certainly makes more sense
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[23:06] <snover> i should read the backtraces before i open my mouth.
[23:08] <snover> ok, yep, duh. need to check the -info- flag too.
[23:13] <snover> or not& im gonna stop yapping and look at this thing some more for a while.
[23:21] <wjp> hm
[23:21] <snover> (the thermos are Code objects, not View object, so of course the -info- flag does not matter.)
[23:21] <wjp> that midiVolThermo also looks like it has to be called repeatedly?
[23:22] <snover> yeah, my local copy has it in a loop
[23:22] <wjp> ok
[23:22] <snover> though it still isnt quite managing to render changes correctly
[23:22] <snover> this code is so fragile.
[23:23] <wjp> can you look at chap2Inset maybe?
[23:23] <snover> i am looking at dacVolUp
[23:23] <snover> same idea, different view :)
[23:24] <snover> that makes everything work nicely except for whatever is going wrong with doits
[23:25] <snover> ill update the branch in a moment
[23:27] <snover> (its updated now)
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[23:35] <wjp> oh, it seems to get a bit confused
[23:35] <snover> it does. in a very& interesting manner.
[23:36] <wjp> ah
[23:36] <wjp> you have to update the volume global one step at a time too
[23:37] <snover> of course.
[23:37] <snover> very well.
[23:37] <wjp> ( x(local18[- global187 1]) )
[23:38] <wjp> I see what you mean by fragile...
[23:48] <snover> at the moment, pressing the midi volume up button changes the midi volume from 7 to 6. pressing the midi volume down button changes it from 5 to 4, 3 to 2, then gets stuck there. i guess some values are not rounding in exactly the required manner.
[23:50] <snover> oh.
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[23:51] <snover> the number of steps in the thermos is not the same as the number of steps in the actual value
[23:52] <snover> midi 0-15, not 1-15. dac 0-120, not 1-15.
[23:56] <wjp> ugh
[23:56] <wjp> ah yes, there's a shift in dac
[00:00] --- Sat Jan 21 2017