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Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Wed May 31, 2017 6:30 pm
by dr_st
So I was playing the GoG (PC) version of Rayman 2, and encountered a funny glitch.

I was in the middle of the first visit to Menhir Hills. At some point I alt-tabbed out of the game, and when I went back to it, all the textures were gone. Even transitioning to a new sequence did not fix the issue - it persisted until I quit the game. For fun I decided to actually play through Menhir Hills like this, and take a few screenshots for your amusement.

A view of the spiky plants and the menhirs in the distance
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The indoor area at the end of the first section, after defeating the sleeping pirates
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Helicoptering to the purple lum at the start of section two
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Taming the walking shell
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Riding the shell (the lums look like big white squares)
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About to crash into the door
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Another sleeping pirate
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Flying the keg
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The entire construction in view
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This is how a lit switch looks
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Talking to Clark who just destroyed all these pirates
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Clark is not feeling so well...
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Back to the hall of doors
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Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Wed May 31, 2017 6:40 pm
by Hunchman801
Oh yeah, I've seen that level in Rayman M.

:hap:

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Wed May 31, 2017 6:44 pm
by Master
It's really interesting to see how simple Rayman 2 looks when you remove the textures, it makes you appreciate the work done by the Rayman 2 artists to give the world a sense of depth and life.

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Wed May 31, 2017 7:43 pm
by Ambidextroid
Those residual colours are interesting, I suppose they're hues coded to the (usually) textured polygons to add atmosphere but I wouldn't have thought almost every polygon in the game had extra colouring added!

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Wed May 31, 2017 10:26 pm
by PluMGMK
I'm pretty sure it's the static lighting. But it's interesting to see the gradients still there on the letters in the subtitles!

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Wed May 31, 2017 11:46 pm
by Serza5
I find it amusing how Rayman's helicopter hair is just a flat square on his model. :lol:

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Thu Jun 01, 2017 12:06 am
by Ambidextroid
PluMGMK wrote:I'm pretty sure it's the static lighting. But it's interesting to see the gradients still there on the letters in the subtitles!
Ah, that's probably it, I didn't realise static lighting included colours

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Fri Jul 07, 2017 8:12 am
by dr_st
Looks like Photobucket destroyed the hotlinking feature. Before I go look for another service, is there a way to host the images on RaymanPC directly?

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Fri Jul 07, 2017 9:51 am
by Ambidextroid
dr_st wrote:Looks like Photobucket destroyed the hotlinking feature. Before I go look for another service, is there a way to host the images on RaymanPC directly?
Yes, go to the attachments tab under the reply box and you can upload images directly, though there is a file size limit and screenshots may be a little too big

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Fri Jul 07, 2017 11:19 am
by PluMGMK
Not just a file size limit, you're also limited to five attachments per post.

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Fri Jul 07, 2017 4:07 pm
by NyaNyaLily
Not to mention that the file size limit is fairly small.

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Thu Jul 13, 2017 7:43 am
by dr_st
Moved to CubeUpload for the time being.

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Fri Jul 14, 2017 1:30 am
by Adsolution
Ambidextroid wrote:Ah, that's probably it, I didn't realise static lighting included colours
Vertex colours (an RGB property assigned to each vertex) are a part of every 3D API, which are used as the basis for all lighting effects in virtually every game before the 6th gen.

I think Rayman 2 has light entities in the level which are simultaneously used to compute baked level geometry vertex colours and illuminate objects in the world in real time.

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Fri Jul 14, 2017 8:59 am
by Ambidextroid
Adsolution wrote:Vertex colours (an RGB property assigned to each vertex) are a part of every 3D API, which are used as the basis for all lighting effects in virtually every game before the 6th gen.

I think Rayman 2 has light entities in the level which are simultaneously used to compute baked level geometry vertex colours and illuminate objects in the world in real time.
Ah, that makes sense.
I've been meaning to ask a question about perspective correct texture rendering which I can't get my head around but I couldn't think of anyone who'd know, but seeing as you've programmed a lot in 3D I was wondering if you'd be able to help?
I'm trying to understand how a texture is rendered to a polygon in a perspective correct way, and how the program knows where to sample from the texture/how the mechanics of it work.

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Fri Jul 14, 2017 5:14 pm
by PluMGMK
Adsolution wrote:I think Rayman 2 has light entities in the level which are simultaneously used to compute baked level geometry vertex colours and illuminate objects in the world in real time.
As a matter of interest, do you think the difference in colour between the rotating platforms and other geometry in CoBD is deliberate or a side effect of discrepancies between static and dynamic lighting?

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Fri Jul 14, 2017 6:22 pm
by Jaster
For me, more than funny it looks scary.

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Sat Aug 26, 2017 12:00 am
by Harpic fraƮcheur
White supremacy ftw

Re: Rayman 2 (GoG) - funny glitch (all textures gone)

Posted: Sun Sep 03, 2017 1:25 am
by R4Y_ANC3L
At the picture where Rayman flies with the helicopter.


I have a feeling that the "square" positioned on Rayman's head When flying with no textures; is called an Alpha texture. This is used to determine the movement of how Rayman's helicopter hair spins. Just a thought..


Bump.