Rendering glitch with strong pitch

Moderator: Graf Zahl

Locked
User avatar
Gez
Developer
Developer
Posts: 1393
Joined: Mon Oct 22, 2007 16:47

Rendering glitch with strong pitch

Post by Gez » Mon Jun 22, 2015 16:57

When looking up or down, but not straight vertically, sometimes part of the visible world geometry ceases to be rendered in the corner. Perhaps excessive culling of subsectors? Most times, it merely causes a flickering effect when turning, but more rarely you can get the missing part to remain missing on a static scene. It seems more likely to happen in detailed maps. I've managed to get some screenshots of the effect in Valiant and Sunlust. Pay attention to the lower corners.

For example:
Image
Those little slivers of sky on both sides? That's on Sunlust MAP31, ca. 3835, , -1147, too bad idmypos doesn't show angle and pitch as well.

Image
Sunlust MAP23, ca. 3180, -1010

Image
This one is Valiant MAP24 IIRC. Forgot the precise coordinates but there were plenty of areas with the problem around the cathedral.

I have seen it in other wads as well but due to its flickering nature it's pretty hard to screenshot. I have also seen it happen when looking up, though that situation comes up less often in play so don't have a screenshot of it.

User avatar
Graf Zahl
GZDoom Developer
GZDoom Developer
Posts: 7148
Joined: Wed Jul 20, 2005 9:48
Location: Germany
Contact:

Re: Rendering glitch with strong pitch

Post by Graf Zahl » Mon Jun 22, 2015 18:55

This seems to have been emphasized when aspect ratio correction was moved from the projection to the view matrix. The effect has been there forever but it was quite rare.

User avatar
NeuralStunner
O'Neill with it.
Posts: 252
Joined: Tue Dec 29, 2009 3:46
Location: IN SPACE
Contact:

Re: Rendering glitch with strong pitch

Post by NeuralStunner » Mon Jun 29, 2015 2:51

Graf Zahl wrote:The effect has been there forever but it was quite rare.
I've seen it a few times in detailed areas with a lot of midtextures. I don't remember the last time I saw it, I might have assumed it was a temporary issue.
Dean Koontz wrote:Human beings can always be relied upon to exert, with vigor, their God-given right to be stupid.
Spoiler: System Specs

Locked

Return to “Bugs (Archive)”