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SADX Lantern Engine Dreamcast lighting for SADX PC! (v1.2, 03/27/17)

#16 User is offline Morph 

Posted 02 January 2017 - 06:06 PM

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Update!

I managed to vastly improve the vibrancy and brightness, so it looks much closer to the Dreamcast version now. Here's some new screenshots with direct comparison to the (mostly) vanilla lighting: http://imgur.com/a/J7fZx

To compare with the old version: Final Egg v1.0 vs Final Egg v1.1 - the (for some reason) different FOVs make it hard to compare, but you can see for example that v1.1 is notably brighter, particularly on Sonic and the enemy just in front of him.

Full changelog and download here.

#17 User is offline Turbohog 

Posted 03 January 2017 - 01:22 AM

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I can see the difference! Good job Morph, looks like a good improvement!

#18 User is offline muteKi 

Posted 04 January 2017 - 03:50 AM

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Bless you. This is amazing! I almost started to believe something like this would never happen.

#19 User is offline Dark Sonic 

Posted 04 January 2017 - 10:29 AM

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The guy who did the comparison videos for version 1.0 is also doing this for version 1.1. You can definitely tell it's getting closer to the DC version now:



And he's also using my mod which makes me happy lol (although they replaced the new 1 up icons I made with the originals, I'll probably make another version that retains the original heads since people seem to like those)
This post has been edited by Dark Sonic: 04 January 2017 - 10:34 AM

#20 User is offline Neo 

Posted 04 January 2017 - 05:17 PM

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Holy shit, this looks better than sex. Screw being productive, I'm going to spend the weekend messing around with this.

View PostMorph, on 30 December 2016 - 09:11 PM, said:

I'm fairly certain I could restore the Dreamcast lighting from SA2 in SA2 PC, to be quite honest.
Please do, o' mighty warlock. I'm certain I'll gouge my eyes out if I have to look at another flat-colored GUN Beetle.

#21 User is offline McAleeCh 

Posted 04 January 2017 - 05:51 PM

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Wow, this looks amazing - combined with the other recent Dreamcast mods, it looks like this really restores the look and feel of the original version of the game. It's amazing how much atmosphere the original lighting adds to a lot of these areas - you can tell the original art team put a lot of work into it. From watching the comparison videos from the series posted above, it looks like there's still a couple of minor things still to iron out (e.g. clouds you descend through in Red Mountain are still looking darker on the mod compared to the original DC), but it's pretty much 99.9% of the way there now and looks so much better than any post-DC version as a result!

Hats off for the absolutely incredible job on this - amazing to think something that was only being first discussed a few months ago is now not only a reality but almost fully perfected! = D Looking at the comparison screenshots with vanilla PC DX, it's like night and day - almost literally in the case of Final Egg. Was that really that overlit on the GC version of DX, or did they break it further in the port to PC?

Really need to get my hands on a copy of DX so that I can try these out for myself - I'm sure even my dinosaur of a PC could just about run this. = P
This post has been edited by McAleeCh: 04 January 2017 - 06:22 PM

#22 User is offline Morph 

Posted 04 January 2017 - 07:14 PM

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Thanks everyone!

View PostMcAleeCh, on 04 January 2017 - 05:51 PM, said:

Was that really that overlit on the GC version of DX, or did they break it further in the port to PC?


Nah, it's for another mildly interesting reason. That comparison shot uses the SA1 version of the level. In SA1, basically none of the stages (to my knowledge) had vertex colors, so it defaults to a bright diffuse white. SADX's lighting was tuned for stages with vertex colors, so it just looks full bright with the Dreamcast stages.

In other news:

There was an oversight that had the potential to cause crashes (particularly in Sky Deck) when you try to restart a stage. I honestly can't be bothered to make a packaged release, so I'd recommend just downloading this build if you happen to run into the issue.

#23 User is offline LimitCrown 

Posted 04 January 2017 - 08:52 PM

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When I was comparing the way that the 2004 PC version looked to the GameCube and Dreamcast versions, I noticed that the textures that were meant to ignore lighting like the lava in Red Mountain looked slightly darker in the PC version. I found it to be very odd and none of the newer ports seemed to have fixed that issue. The PC port and the newer ones also had the issue of the character lighting direction in some stages being the same as the direction that the camera pointed. I'm glad that the Dreamcast lighting mod fixes those two problems.

#24 User is offline Morph 

Posted 04 January 2017 - 10:41 PM

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View PostLimitCrown, on 04 January 2017 - 08:52 PM, said:

The PC port and the newer ones also had the issue of the character lighting direction in some stages being the same as the direction that the camera pointed. I'm glad that the Dreamcast lighting mod fixes those two problems.


This is the case in all stages, and it's by design. They could have easily disabled it on PC (it's just a D3D render state; D3DRS_LOCALVIEWER defaults to enabled), and it would have actually been less computationally expensive to do so, but they deliberately left it enabled. Physically speaking, that's how specular lighting is supposed to work; the brightness of the specular reflection depends on the perspective of the viewer. That being said, I used non-relative specular lighting to be accurate, as you could imagine. :v:

#25 User is offline Turbohog 

Posted 04 January 2017 - 11:39 PM

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View PostNeo, on 04 January 2017 - 05:17 PM, said:

View PostMorph, on 30 December 2016 - 09:11 PM, said:

I'm fairly certain I could restore the Dreamcast lighting from SA2 in SA2 PC, to be quite honest.
Please do, o' mighty warlock. I'm certain I'll gouge my eyes out if I have to look at another flat-colored GUN Beetle.


I second this. I feel like SA2 doesn't get as much modding love as it deserves (not to the fault of anyone I might add).

Also, I just want to point out another difference between the Dreamcast and PC release. See this video at 3 min 33 sec. The sky at this point of Sky Deck looks so much better on the Dreamcast. Does the sky always look the same in each respective version?
This post has been edited by Turbohog: 04 January 2017 - 11:45 PM

#26 User is offline PkR 

Posted 05 January 2017 - 01:51 AM

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View PostTurbohog, on 04 January 2017 - 11:39 PM, said:

Also, I just want to point out another difference between the Dreamcast and PC release. See this video at 3 min 33 sec. The sky at this point of Sky Deck looks so much better on the Dreamcast. Does the sky always look the same in each respective version?

You might like this (I also animated the clouds):
Posted Image
There's a catch though. The clouds consist of two transparent layers, and apparently there is some code that clips them at different camera angles. It isn't very noticeable in Sonic's stage, but when you play as Knuckles it looks like pretty awful pop-in. I'm gonna need someone familiar with the code to help me fix this thing.
Also, since this isn't lighting-related, it might be a good idea to discuss this particular issue in the DC Mods topic.

#27 User is offline McAleeCh 

Posted 05 January 2017 - 04:17 AM

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View PostMorph, on 04 January 2017 - 07:14 PM, said:

View PostMcAleeCh, on 04 January 2017 - 05:51 PM, said:

Was that really that overlit on the GC version of DX, or did they break it further in the port to PC?
Nah, it's for another mildly interesting reason. That comparison shot uses the SA1 version of the level. In SA1, basically none of the stages (to my knowledge) had vertex colors, so it defaults to a bright diffuse white. SADX's lighting was tuned for stages with vertex colors, so it just looks full bright with the Dreamcast stages.
Ah, that makes sense - thanks for the explanation! I should have guessed using the Dreamcast stages with the vanilla SADX lighting might produce funky results. I've never played SADX on PC and haven't played the GC version in donkey's years, but I was pretty sure I didn't remember Final Egg looking like that. Glad it wasn't just my memory playing tricks on me.
This post has been edited by McAleeCh: 05 January 2017 - 04:18 AM

#28 User is offline Turbohog 

Posted 05 January 2017 - 12:46 PM

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View PostPkR, on 05 January 2017 - 01:51 AM, said:

Also, since this isn't lighting-related, it might be a good idea to discuss this particular issue in the DC Mods topic.

Ah, my mistake. Sometimes I forget that we have like, 3 topics in which we're discussing SADX Dreamcast stuff. :specialed:

#29 User is offline Krigo 

Posted 09 January 2017 - 01:47 AM

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This looks amazing!

Going to definitely download this for my next SA playthrough.

#30 User is offline InstantSonic 

Posted 09 January 2017 - 08:22 AM

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Incredible. I never thought I'd see a port of SA with proper lighting outside of the Dreamcast... and yet, here we are, almost 13 years later.

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