Bug report of Q3MME 1.8

[leaveittothemattster]

Solution found!

Patch your Q3MME to 1.8a and delete everything in \mme\mmedemos\. The affected and problematic demos should play perfectly with mme_democonvert set to 1.

Greetings guys!

I am pleased to submit my report on reproducing bugs in Q3MME 1.8 carried out on 2016-10-09.



1. Bugs in demo file detection mechanism in certain problematic demos will cause Q3MME to CRASH whenever a problematic demo is attempted to be played.



    Illustration: Certain DeFRaG demos can't be played as Q3MME 1.8 detects them as regular/unknown demos and Q3MME 1.8 crashes.



2. If a non-problematic demo is played and:



    (a) paused by pressing C;

    (b) seeked back to the beginning;

    (c) pressed ESC to stop playing and return to the main menu; and

    (d) trying to play a problematic demo will cue an error: No Initial demo snapshot found.



3. There existed a bug in very few demos where the map can be loaded, but the demo won't play - it wasn't paused either!



4. None of these solutions worked:



    (a) Set compatibility mode to Windows XP (Service Pack 3)

    (b) Run Q3MME 1.8 as an administrator

    (c) Disable display scaling at high DPI settings

    (d) Load default.cfg

    (e) Manipulate graphics settings

    (f) .pk3 files for problematic demos are present



5. Disclaimer:



    (a) These bugs were reproduced on Windows 10 Enterprise 1607 64-bit with the latest updates installed.

    (b) Here are my system specifications:

        (i) Intel Core i7-4770K 3.5 GHz

        (ii) Gigabyte GA-Z87P-D3

        (iii) 8 GB ADATA XPG 1 600 MHz DDR3

        (iv) SAMSUNG 840 EVO 120 GB SATA III

        (v) Seagate Barracuda 7200.14 1 TB SATA III

    (c) These demos were recorded as DeFRaG demos with iodfengine on servers running DeFRaG versions between 1.91.20 and 1.91.24, depending on the age of demos listed below and all of them play perfectly in DeFRaG mod.



6. May I present you guys the problematic demos as attachments - all of them related to 1. and 2. except otherwise posted:



    (a) 4gpl[mdf.vq3]00.34.912(DipperPines.Malaysia).dm_68

    (b) bardok-lick[mdf.vq3]00.23.432(cSMatt).dm_68

    (c) cuddles-2[mdf.cpm]00.07.584(CybsMatt).dm_68

    (d) ghost-speed8[mdf.cpm]00.14.864(CybsMatt).dm_68

    (e) hunterun-19[mdf.cpm]00.24.912(CybsMatt).dm_68

    (f) inder-sl1k[mdf.vq3]00.17.848(UnnamedPlayer.Malaysia).dm_68

    (g) jesus_round[mdf.cpm]00.15.808(CybsMatt).dm_68

    (h) line7[mdf.vq3]01.04.480(DipperPines.Malaysia).dm_68

    (i) 3. mu-x[mdf.vq3]00.08.872(Dipper.Malaysia).dm_68

    (j) pento-slick[mdf.cpm]00.25.448(CybsMatt).dm_68

    (k) r_track[mdf.vq3]00.28.920(CybsMatt).dm_68

7. Console dump for 2.:


----- finished R_Init -----

Try loading dll file D:\id Software\q3mme\mme\uix86.dll

Loading DLL file: D:\id Software\q3mme\mme\uix86.dll

Sys_LoadGameDll(D:\id Software\q3mme\mme\uix86.dll) found vmMain function at

22706920

Try loading dll file D:\id Software\q3mme\mme\cgamex86.dll

Loading DLL file: D:\id Software\q3mme\mme\cgamex86.dll

Sys_LoadGameDll(D:\id Software\q3mme\mme\cgamex86.dll) found vmMain function

at 27746490

RE_RegisterFont: called with empty name

Regular/Unknown demo detected

*******************

ERROR: No Initial demo snapshot found

********************

RE_Shutdown( 0 )

Hunk_Clear: reset the hunk ok

----- R_Init -----
problematic1.zip (537.02 KB) problematic2.zip (861.9 KB) problematic3.zip (606.19 KB)




[ent]

Hello.

Thank you for the report.

Could you send all the maps?
Could you send your q3config.cfg from mme folder?

Do demos play back fine if you set mme_demoConvert 0?

[leaveittothemattster]

Touchdown! Ikken Hissatsu!

Setting mme_democonvert to 0 killed those nasty bugs!

By the way, why this command is on by default in Q3MME 1.8?

[ent]

Because that command enables demo conversion that is required for the enhanced demo playback (pause/rewind etc).
With mme_demoConvert set to 0, it just uses the default demo player.
I asked to set it to 0 just for the test.

Anyways, I found the issue and will send patched q3mme soon. Stay tuned.

[ent]

Try this:
quake3mme1.8a-patched-engine.rar (736.75 KB)

[leaveittothemattster]

Problems persisted when those problematic demos are attempted to be played by the patched Q3MME 1.8: it still crashes, provided if mme_democonvert is set to 1. Reproducing this bug by following 2. mentioned on top of this thread still yields No Initial demo snapshot found error and still detects them as regular/unknown demos. However...

They play perfectly when they are placed in a folder of any name inside \mme\demos\ directory.

Example: \mme\demos\jantarium\

[ent]

Remove everything from "mmedemos" folder.
Retry.

[leaveittothemattster]

Oct 9, 2016 15:55:18 GMT 1 ent said:

Remove everything from "mmedemos" folder.
Retry.

I hereby thank ent for the patched Q3MME 1.8a and accepted ↑ this quote above ↑ as a solution.

[auri]

Thank you very much, guys. Eternally greatful for the mme updates and even this extensive bug-reporting and fixing!

If you need me for anything feel free to ask. I might or might not be able to help you :]