Tons of DH chunks lost in shadow when render distance greater than shadow distance
GeForceLegend opened this issue ยท 4 comments
What happened?
When setting render distance from 7 to 8 chunks, about 95% DH chunks disappeared in shadowmapping, when world time is set to 23500 (not sure if this also exist on other time) and shadowDistance is 120, even most of them are not expected to disappear
Screenshots
Render distance set to 7, about 440 DH chunks are rendered in shadowmapping
Render distance set to 8, only 25 DH chunks are rendered in shadowmapping
Log output
No response
Minecraft Version
1.20.6
Iris Version
iris-1.7.1+mc1.20.6.jar, DistantHorizons-2.1.2-a-1.20.6.jar
Operating System
Windows10 Home 22H2 19045.4529
What is your GPU?
NVIDIA GeForce RTX 4070
Additional context
No response
After further testing, this seems to happen when render distance >= shadow distance, for example, when shadow distance is set to 240, if render distance is greater or equal than 15 (15 * 16 = 240), then this will happen
Also may affected by shadow.culling. All shader with this issue can get fixed with shadow.culling set to reserved or true (tho certain shader pack may not suit this). And some shader pack that does not have this issue can make it happen if deleting shadow.culling or set it to false.
Bliss is special, for unknown reason, DH shadow always works fine, no matter if Manually set shadow.culling exists or set to those values. Haven't figure out why Bliss is special yet.shadow.culling = false will make this issue happen on Bliss too.
causing code is here
this doesn't check for dh, and uses a box culler, instead of no culling when shadow distance is lower than render distance
edit:
although that isn't fully correct either. it should still do the box culler for regular terrain, but h no culling for DH