Workarounds for overlap issue with trapdoors etc. at low render distance?

I guess it's not really a bug but I thought maybe there's a possible solution/workaround anyway? On realms (very low render distance) it makes some buildings look pretty bad even within the server render distance as even with overlap set to 1.0, the LOD loads quite a bit before the texture would normally unload on vanilla (pics related, look at the castle chimneys, this is with extreme settings too, otherwise it's much worse). I have 2 questions regarding this:

Is there any way to prevent those types of blocks from being included in the LOD altogether? (I know this isn't a feature, I mean does the current implementation allow to relatively easily edit this in the code or if it would be a major change and I shouldn't even bother looking into it?)
Alternatively, is it somehow possible to combine DH with sth like Bobby to keep a slightly higher non-LOD client-side render distance and then use DH's LOD for everything past that? (I used Bobby in the past to increase local render distance on realms to around 64, switched to DH recently for performance reasons)

Solution

Edit the distant horizons config file with any text editor, look for

ignoredRenderBlockCsv

ignoredRenderBlockCsv

and add any block of your choice to it

Jump to solution

MarijnIsN00B•5/3/25, 2:24 PM

/overdraw

YAGPDB.xyz•5/3/25, 2:24 PM

Q: There are holes at the edge of vanilla Render Distance, especially during movement
A: This is caused by either vanilla terrain not loading in fast enough, or shader's incorrect overdraw prevention implementation or configuration (if you use one)
Some world gen speed improvement can be found when adding these three mods, but the affect will be minor:

Noisium
Faster Random
C2ME (DH 2.3.0+)
The easiest fix is to move slower and/or ignore it. This hole is most visible while moving over not generated (by vanilla) terrain. Moving over that terrain every subsequent time may not create the hole. And moving slower will give MC more time to load the chunks as you go.
If none of that helped, you can also tune the overdraw prevention, look at the third section to know how.

Q: There are low quality full blocks behind and around non-full block, e.g. fences or ladders
A: This is intended behavior, to prevent holes in the world while you move, DH will overlap with some part of the vanilla terrain.
How much of the terrain is covered is determined by the overdraw prevention:
1.0 will mean DH LODs start where vanilla chunks end.
0.1 will mean that DH render very close to the players position.
0.0 sets it on auto mode.
To fix this, you can either:
Increase your vanilla RD, which will move the DH LODs further from you.
Tune the Overdraw Prevention setting, see the next section to know how.

Q: Where do I edit the overdraw prevention setting?
A: Overdraw prevention setting can be edited inside the DH config under:
Advanced > Graphics > Culling
BUT: if you use shaders, they will influence overdraw prevention. The effectiveness of overdraw prevention depends on the shader’s internal settings, which may or may not be adjustable. However, the shader’s overdraw prevention will always operate within the limits set by DH’s overdraw prevention. To avoid conflicts, ensure that DH’s overdraw prevention is not set too high.

MarijnIsN00B•5/3/25, 2:24 PM

See second Q

MarijnIsN00B•5/3/25, 2:24 PM

Is there any way to prevent those types of blocks from being included in the LOD altogether? (I know this isn't a feature

Thats the fun part, it is!

Solution

MarijnIsN00B•5/3/25, 2:25 PM

Edit the distant horizons config file with any text editor, look for

ignoredRenderBlockCsv

ignoredRenderBlockCsv

and add any block of your choice to it

BrianDMSOP•5/3/25, 2:26 PM

Yeah I read that FAQ section and played with those settings already, like I mentioned the overdraw at 1.0 doesn't do much for me since realms has such a crazy low render distance ;__; (also even then the overdraw still starts quite a bit before the texture would normally unload for me on vanilla)

MMarijnIsN00B > Is there any way to prevent those types of blocks from being included in the L...

BrianDMSOP•5/3/25, 2:26 PM

oh. my. god.

BrianDMSOP•5/3/25, 2:26 PM

that's so sick, had no clue about this at all

BrianDMSOP•5/3/25, 2:27 PM

thx so much, i'll play around with it, i feel like it should do the trick ^^

BBrianDMS Yeah I read that FAQ section and played with those settings already, like I ment...

Miki_P98•5/3/25, 2:29 PM

Well with Overdraw prevention at 1.0 the LODs start where vanilla Ends
If DH won't be there, nothing will be there

MMiki_P98 Well with Overdraw prevention at 1.0 the LODs start where vanilla Ends If DH won...

BrianDMSOP•5/3/25, 2:31 PM

That's what I assumed but after testing it a bit, it feels like there's still quite some distance between the point where overdraw starts (with the setting at 1.0) and where textures unload for me with DH turned off (tho maybe unloading on vanilla is a bit delayed and goes slightly past render distance, no clue)

BrianDMSOP•5/3/25, 2:32 PM

either way though, this would still be very close, i was looking more for a way to eliminate those mostly transparent blocks from being displayed in the LOD or (otherwise being able to combine the mod with sth like bobby to render non-LOD textures a little bit further before switching to DH)

BrianDMSOP•5/3/25, 2:33 PM

(i know this isn't the fault of the mod ofc)

BrianDMSOP•5/3/25, 2:34 PM

I think the ignoredRenderBlockCsv approach might work for me though which would be amazing

Miki_P98•5/3/25, 2:35 PM

with fog enabled vanilla gets covered in a Cylinder around you
with it disabled you will be able to see just a tad more then that as chunks are squares so the chunks go slightly past the cylinder walls
The DH overdraw is a sphere , so even at 1.0 you will cut some more vanilla terrain above or below you
You can use mod Better FPS - Render Distance to make vanilla also a sphere to get some wasted FPS back (though not much, especially on low RD)

Miki_P98•5/3/25, 2:36 PM

And yeah, there can be slight delay in unloading chunks

BrianDMSOP•5/3/25, 2:36 PM

Ah i see the sphere thing makes sense too cause i especially noticed this with towers etc. when standing on the ground, didn't know this one

BrianDMSOP•5/3/25, 2:37 PM

i'll check that mod out too cause why not, thx ^^

BBrianDMS either way though, this would still be very close, i was looking more for a way ...

Miki_P98•5/3/25, 2:37 PM

You can use Bobby alongside DH, but you will get holes until you have the terrain cached by bobby
Also note that Bobby has bug that decreases your fps by up to 70% by exising. The decrease varies per hardware and ranges from 0% for most, through 30% for me, and up to the mentioned 70% for 1 known person

BrianDMSOP•5/3/25, 2:38 PM

yeaaaah performance issues were the main reason for me to switch, it was pretty rough ngl

BBrianDMS i'll check that mod out too cause why not, thx ^^

Miki_P98•5/3/25, 2:39 PM

Just make sure to do this: https://discord.com/channels/881614130614767666/1035937813310484540/1348774830459195463
By default the mod squishes the sphere a bit resulting in some holes below and above you :/

BrianDMSOP•5/3/25, 2:39 PM

thx ^^

BBrianDMS I guess it's not really a bug but I thought maybe there's a possible solution/wo...

Miki_P98•5/3/25, 2:41 PM

You can also increase the resolution of DH's noise texture in settings
I found that using Steps (resolution) of 8, 12 or 16 look much better
Increasing the intensity/strength a bit also looks nice and helps it blend better with vanilla

BrianDMSOP•5/3/25, 2:41 PM

Sick, will try that too