VRenderSystem.getFogData() returns null in multiple rendering passes (Clouds, Terrain, Sky)

[xululu200710-netizen]

Describe the bug

Description

VulkanMod crashes with NullPointerException because net.vulkanmod.vulkan.VRenderSystem.getFogData() returns null when setting up shader uniforms. The crash occurs in different rendering passes depending on configuration:

• With clouds enabled: CloudRenderer.renderClouds
• With clouds disabled: WorldRenderer.renderSectionLayer (terrain)
• After downgrading VulkanMod + with Beryl: SkyRenderer2.renderSkyDisc (sky disc)

The issue happens entering a singleplayer world.

Tested variations:

• Clouds ON/OFF (still crashes)
• VulkanMod 0.6.8+26.1.2 (latest) and 0.6.6 (downgraded)
• With/without Beryl mod

Crash Logs

• Full crash reports attached (3 different crashes).
• Common stack trace always points to Uniforms.lambda$setupDefaultUniforms* accessing fields like cloudEnd / environmentalStart / renderDistanceStart from null fog data.

Environment

• Minecraft: 26.1 (Fabric 0.19.3)
• VulkanMod: 0.6.8+26.1.2 (also reproduced on 0.6.6)
• Launcher: PCL
• OS: Windows 11 (amd64)
• GPU: NVIDIA GeForce RTX 4060 Laptop GPU (Vulkan 1.4.341)
• Java: 25.0.1 (Microsoft)
• Render Distance: 16
• Other relevant mods: Beryl 0.2.0-alpha, Not Enough Vulkan, Malilib family (Tweakeroo, MiniHUD, etc.), Jade, JourneyMap, Advanced XRay

Additional Info

• The crash is not present without malilib family mods.
• Happens on entering the world.

Steps to reproduce

1. Launch Minecraft 26.1 Fabric with VulkanMod and malilib familes.
2. Enter a singleplayer world.
3. Crash occurs when entering.

Log files

错误报告-2026-7-13_21.53.03.zip

错误报告-2026-7-13_21.57.01.zip

错误报告-2026-7-13_22.01.15.zip

[xululu200710-netizen]

now it can run without crashing on fabric API 0.145.1+26.1

[Versatile-One]

now it can run without crashing on fabric API 0.145.1+26.1

If it's no longer an issue then you can close this.