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Quake with texture filtering off is a bad case for JPEG, though. JPEG is also a bad choice if you want to make brightness adjustments afterwards, especially extreme changes (something I often do when I get screenshots of lighting bugs.)
Ideally JPG, PNG, TGA would be available. I think MarkV can do those and has a cvar to pick the format. aye, jpeg sucks. you can reduce the compression to get something close to png, but doing so just increases the filesize too. if you've got high res textures (which frankly just look like noise in the first place) etc then jpeg can't make it any worse, but otherwise imho png is a better choice than jpeg at least for a default setting.
(windows) bmp might work if you want something more equivalent to tga, its basically just a different header but much better supported (at least on windows and except by quake engines). it can also be paletted, and doesn't need extra libraries. but png is best if you're going to shove it on a website (and why take screenshots if not to share them). The problem with BMP is that each row must be a multiple of 4 bytes, so for odd resolutions like 1366x768 or if you want 24-bit data you can't just fwrite the output from a glReadPixels.
Open the source code for JoeQuake. There are 3-5 headers. 1 cvar. Link libpng and libjpeg. Call the appropriate function to write a png or jpeg. 30 minutes tops.
Well okay, TGA isn't particularly small, either...
doesn't matter what the engine writes out, you should convert to jpeg before uploading it.
Depends. If I wanted to highlight something like a conchars font with different filtering and scaling options I'd leave as PNG. JPG was created for photographs. If an image is not a photograph then JPG is probably not the best format. In particular, JPG is a poor choice for images with large areas of the same continuous color, such as many web page graphics.
JPG is not intended for images which will require additional editing, but for an in-game snapshot is probably fine. The option for a higher quality image would be good to have, but I would not consider it a necessity for a game. Hi!
While playtesting a map I'm working on, I got a stack overflow bug: First, I pick up the quad damage, enter the door to the left and then aim somewhere between the Enforcer and the radioactive container in front of him. I could fairly reliably get the following stack overflow: CALL4 1705(T_RadiusDamage)T_RadiusDamage() misc.qc : barrel_explode misc.qc : barrel_explode combat.qc : Killed combat.qc : T_Damage combat.qc : T_RadiusDamage misc.qc : barrel_explode combat.qc : Killed combat.qc : T_Damage combat.qc : T_RadiusDamage misc.qc : barrel_explode combat.qc : Killed combat.qc : T_Damage combat.qc : T_RadiusDamage misc.qc : barrel_explode combat.qc : Killed combat.qc : T_Damage combat.qc : T_RadiusDamage misc.qc : barrel_explode combat.qc : Killed combat.qc : T_Damage combat.qc : T_RadiusDamage misc.qc : barrel_explode combat.qc : Killed combat.qc : T_Damage weapons.qc : ApplyMultiDamage weapons.qc : AddMultiDamage weapons.qc : TraceAttack weapons.qc : FireBullets weapons.qc : W_FireShotgun weapons.qc : W_Attack weapons.qc : W_WeaponFrame client.qc : PlayerPostThink <NO FUNCTION> stack overflow Host_Error: Program error The map can be downloaded below: https://www.dropbox.com/s/i43hcljprz3c45f/bugmap.zip?dl=0 I've reliably reproduced this too.
Increasing MAX_STACK_DEPTH in pr_exec.c to 64 is sufficient to resolve; a lower value may also do but I didn't bother testing. It's caused by a large amount of exploding boxes in close proximity setting each other off. I remember running into this issue myself once many years ago. I was under the impression it's simply a common Quake bug/limitation, but I can't seem to reproduce it in Winquake/GLquake using Esrael's map. Does it occur everywhere or is it actually something introduced in and carried over from the Fitz code?
It's a hangover from the original ID code.
You need to be very specific about this because it's the chain of effects that sets off the stack overflow. Hence you need the Quad and you need to be in the very specific situation where there are 6 or so exploding boxes in close enough proximity. You shoot near one box, the Quadded shotgun explodes it, it triggers the next box to explode, which triggers the next box, and so on. Each explosion is 4 function calls: barrel_explode for the explosion, T_RadiusDamage from he explosion, T_Damage to the next box, then Killed which kills the next box and in turn sets off another barrel_explode. Removing one of the boxes should be sufficient to prevent it ever happening. I also have engine code somewhere that effectively gives you an infinite stack (at least until you run out of memory) which would also more robustly fix this and other similar issues. findradius is just all kinds of evil. its possible for exploboxes to be skipped entirely too, depending on how
Frankly, calling T_RadiusDamage inside Killed/.th_die should be considered a bug, fixable by delaying it to a think function. This also fixes the above crash, too. While playtesting a map I'm working on, I got a stack overflow bug
This is a bug in QC that happens on anything with a call to a radius explosion function within a death event. This is why tarbaby.qc (line 172) delays the explosion to the next frame. So that you cannot get a chain effect and stack overflow. The misc.qc - barrel_explode function is broken. It should delay the radius explosion one frame and it would be fine. I fixed this in AD QC if anyone wants an example of this. ... yes?
findradius cannot reliably be used recursively like that. there are other symptoms than just the stack overflow. is it time for eg quakespasm to throw a new progs.dat into its Some mappers use extremophile abuse of functions (see Teaching Old Progs New Tricks).
There are plenty of maps that use "BecomeExplosion" and an array other nuances in the original progs. As a result you can take a map like dm3rmx and run in, say, ezQuake which supplies its own single player progs that was written more efficiently and then it goes to console with a QuakeC error when a tricky map calls something by name that was written in a slightly different way. It is quite possible to make a cautiously "improved" progs.dat that breaks existing maps. Situation where the progs.dat is the worst possible progs.dat except for all the improved ones where some of the "bug fixes" and "code cleanups" are not bug fixes but bonafide behavior changes. It used to be common for a number of QuakeC coders to have their own "cleaned up and better" progs.dat. I have seen the source to about 10 of these from the original CleanQC to ScratchQC to public ones coder [insert coder X, coder Y, coder Z] made for a QuakeExpo and such. I have not seen one without random arbitrary behavior changes, although sometimes it is incidental, but most of the time it is apathy or indifference. Often the guy that only knows deathmatch breaks something in single player, the guy that only knows single player breaks something in deathmatch, or someone corrects a "bug" by breaking something not important to that coder or "fixing" something that shouldn't be fixed or that they didn't understand is a behavior change. It also doesn't take much to make save game files incompatible with an "improved" progs.dat. (No I haven't looked at the source code for gnounc/jonas 1.01 one so I wasn't referencing that one anywhere above. Can the 1.01 version load a real Quake progs.dat save game? I don't know.) /Possibly preventing rarely known issues. But it was boring typing that. It also doesn't take much to make save game files incompatible with an "improved" progs.dat.
Like what, any example? imo the right place to fix this is in "clean qc"/"bugfixed id1 progs" type of mod.. and maps that need the fixes would target that mod
he means different precache_model+precache_sound calls, which is why dp+fte+qss save the sound+model precaches into the saved game.
Next Baker will be arguing to leave all the segfaults in... if its so important that everyone have the exact same progs, then maybe quakespasm should include a copy of progs 1.06 for all those people with cd versions that came with 1.01
throwing in some extra things that mean we don't need more absurd+awkward function hacks can only be a good thing. My monster randomizer for the speedrunning community breaks the save files... and breaks it hard.
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