Vulkan PostFX 1.14.1 — Stability & Shadow Tuning

This is a stability-focused update for Minecraft 26.2-rc2.

Added

• Added safer VPFX shader pack auto-selection behavior.
• Added configurable sun/moon shadow tuning through JVM properties.
• Added throttled shadow diagnostics to reduce log spam.

Changed

• Improved sun/moon primary light selection near sunset and moonrise.
• Moonlight shadows are now much weaker by default.
• Shadow intensity now fades more smoothly during light transitions.
• /vpfx reload auto is safer in-world and avoids unnecessary hard resource reloads.

Fixed

• Fixed cases where VPFX could get stuck on the built-in invert debug effect.
• Fixed fallback behavior when external VPFX pack loading fails.
• Fixed excessive per-frame shadow pipeline logging.
• Fixed sunset/moonrise shadow flickering caused by sun/moon light source fighting.

Notes

• Native VPFX runtime work is still experimental.
• Entity shadows and player shadows are not yet part of this release.
• If a shader pack fails to load, VPFX should fall back to vanilla rendering instead of disrupting the world.

Shadow tuning properties

Advanced users can tune shadow behavior with:

-Dvulkanpostfx.shadow.moonMaxIntensity=0.10
-Dvulkanpostfx.shadow.baseDarkness=0.42
-Dvulkanpostfx.shadow.logIntervalFrames=300

These are optional and mainly intended for testing.