[1.19.2 Bug] Top of sky turns white in snowy biomes during thunder weather when using Optifine for Complementary Shaders with WWOO

DoYouLikeToEatBee commented 1 year ago

Description of Issue

Sky turns white in snowy biomes during thunder weather when using Optifine for Complementary Shaders with William Wyther's Overhauled Overworld (WWOO).

2022-12-22_00 10 35

Steps to Reproduce

Go to an inner area of a snowy biome/region (eg. snowy taiga; "inner area" is meant in the sense that there are no nearby chunks with regular rain effects during thunder weather, but only chunks with snow during thunder).
Change weather to Thunder weather, Set time to daytime 3a. Sky will now appear white on the top area of the skybox 3b. you may also see this glitched sky effect flicker off/on when lightning occurs (/summon minecraft:lightning_bolt)

OptiFine Version

OptiFine HD U H9, with Forge 43.2.0 OptiFine HD U I1 pre4, with Forge 43.1.52 (Tried with both versions)

Installation Method

(Using MultiMC 5 - Version 0.6.16-3431) Dropped the .jar file for OptiFine into the MC instance's mods folder

Fabric/Forge Version

Forge 43.2.0 Also tried 43.1.52

Other Installed Mods

WWOO-FORGE-3.1.9+1.19.x ComplementaryShaders_v4.6 (in shaderpacks folder)

Server log: https://paste.ee/p/LQ47E

Prior Testing

Tested with the following setups:

Forge+Rubidium+Oculus+ComplementaryShaders+WWOO (Bug does not happen)
Forge+Rubidium+Oculus+ComplementaryShaders (Bug does not happen)
Forge+Optifine+ComplementaryShaders (Bug does not happen)
Forge+Optifine+ComplementaryShaders+WWOO (Bug happens)
Have seen if using TerraBlender with WWOO makes a difference (it does not)

If you've installed using Forge/Fabric:

This bug happens with only Optifine and WWOO (with Forge required)
It does not happen with Oculus/Rubidium instead of Optifine
This does not happen in OptiFine standalone because Forge is required for WWOO
This does not happen in vanilla without Optifine because Forge and Optifine are required for Complementary Shaders and WWOO, respectively

Additional Information

I checked with the WWOO team and they have advised me this is an OptiFine issue, not an issue with WWOO itself (can confirm as this bug is not reproducible when using Oculus/Rubidium in place of OptiFine)

Sometimes this bug happens with just thunder weather, at other times it happens with both thunder and rain weather. But always only in cold biomes during the daytime with Complementary Shaders + Optifine.

Parameters for an exact example of where/how this bug can be reproduced: Minecraft 1.19.2 Forge 43.2.0 OptiFine_1.19.2_HD_U_H9 WWOO-FORGE-3.1.9+1.19.x ComplementaryShaders_v4.6 (in shaderpacks folder) Seed 395254105366064993 XYZ -5070 91 5030 (or most spots deep inside a snowy biome) /time set day /weather thunder then also do /summon minecraft:lightning_bolt

DoYouLikeToEatBee commented 1 year ago

Finished completing issue ticket description, reopened after initially creating ticket unfinished by accident

DoYouLikeToEatBee commented 1 year ago

Did some further testing and can further clarify this bug only happens with daytime skies, not at night

Sometimes this bug happens with just thunder weather, at other times it happens with both thunder and rain weather. But always only in cold biomes during the daytime with Complementary Shaders + Optifine.

On day/night cycle enabled, this effect always begins at 4:20 AM in a given day cycle (Not making a joke).

sp614x / optifine