perspective

Boff
Lurker
Posts: 1
Joined: Fri Dec 02, 2011 1:49 am

perspective

Postby Boff » Fri Dec 02, 2011 2:12 am

I missed dark forces first time round, but picked it up on budget back in 1996 and had an AMAZING time with it.

But Dark Forces, jedi engine, always had this gut wrenching perspecitve skewer when looking up and down - especially with the skybox doing it's own thing.

For one of the doom GZ GL z doom, I forget which one,

They actually compensated for the perspective skewer so the world rendered as expected with say a modern day engine. (more than likely by importing and converting the level geometry into another engine all together.

Now that you have mouse-look, high resolutions, I find the faithful perspective skew when looking up and down really stomach churning.

So if possible, I know it's not just a simple thing, but could you possible at all fix the perspective problem - Tall order I know, I haven't seen the dagger fall stuff yet if this is an issue there or not. I don't know if this is already on your own todo list, and I don't mean to be of great bother.
User avatar
AdamantC
Junior-Member
Posts: 40
Joined: Fri Apr 15, 2011 8:42 pm
Location: Icing My Yabba

Re: perspective

Postby AdamantC » Fri Dec 02, 2011 3:51 pm

IIRC there will be an option for this whenever the beta comes out.
Blue Footed Booby
Member
Posts: 82
Joined: Sun Apr 17, 2011 5:25 pm

Re: perspective

Postby Blue Footed Booby » Sat Jun 30, 2012 1:28 pm

Boff wrote:I missed dark forces first time round, but picked it up on budget back in 1996 and had an AMAZING time with it.

But Dark Forces, jedi engine, always had this gut wrenching perspecitve skewer when looking up and down - especially with the skybox doing it's own thing.

For one of the doom GZ GL z doom, I forget which one,

They actually compensated for the perspective skewer so the world rendered as expected with say a modern day engine. (more than likely by importing and converting the level geometry into another engine all together.

Now that you have mouse-look, high resolutions, I find the faithful perspective skew when looking up and down really stomach churning.

So if possible, I know it's not just a simple thing, but could you possible at all fix the perspective problem - Tall order I know, I haven't seen the dagger fall stuff yet if this is an issue there or not. I don't know if this is already on your own todo list, and I don't mean to be of great bother.


The weird perspective distortion you describe is a result of Dark Forces not actually being 3D. It may look 3D, but it's actually using a technique called ray casting (you can google if you'd like to see how it works). Suffice it to say that ray casting does not actually support real, perspective correct looking up and down. The effect is achieved in game using fakery.

This issue is not shared by the various redone Doom engines because those use actual, real 3D rasterization. XLEngine will be real 3D, so it won't have this problem unless our overlord deliberately recreates it.
luciusDXL
XL Engine Developer / Site Admin
XL Engine Developer / Site Admin
Posts: 778
Joined: Thu Apr 14, 2011 4:05 pm
Contact:

Re: perspective

Postby luciusDXL » Sat Jun 30, 2012 2:01 pm

The perspective issue will be fixed in the OpenGL renderer, though the current method will remain as an option. The software renderer will continue to render it in this way, similar to zDoom or Chocolate Doom.
Gez
Senior-Member
Posts: 329
Joined: Fri Apr 15, 2011 2:54 pm

Re: perspective

Postby Gez » Sun Jul 01, 2012 5:36 am

Blue Footed Booby wrote:This issue is not shared by the various redone Doom engines because those use actual, real 3D rasterization. XLEngine will be real 3D, so it won't have this problem unless our overlord deliberately recreates it.

Only the OpenGL engines. Ports that still use a software renderer still present the issue. Here's the article on the ZDoom wiki.

There is an exception with DelphiDoom, which uses Y-shearing but then apply some "corrective distortion" to create the illusion of proper perspective.
LukBigo
Junior-Member
Posts: 43
Joined: Fri Jan 26, 2018 8:11 am

Shelf Life Of Prednison Tablets LukArrepe

Postby LukBigo » Fri Jan 26, 2018 8:34 am

Cialis Kosten Schweiz Cialis Forum Panorama Acyclovir No Script Canada cialis buy online Viagra Precio Espana Comprar Cialis Las Palmas
Levitra Cerco Tadalafil Livraison Rapide cialis buy online Problems Of Propecia Cialis Migraine

Return to “Feature Requests”

Who is online

Users browsing this forum: No registered users and 0 guests