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Vulkan PostFX

Vulkan PostFX

Experimental VPFX shader pack loader and post-processing framework for Minecraft’s modern Vulkan-based rendering path.

11.2Kdownloads
22followers
11.2Kdownloads
22followers

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Details

Published 4 months ago
Updated last month
All versions

1.15.0+mc26.2-rc2-2026-06-14

Release
Vulkan PostFX 1.15.0+mc26.2-rc2-2026-06-142 months ago 20
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Compatibility

Minecraft: Java Edition
26.2-rc-2
Platform
Fabric
Supported environments
Client-side

Changes

Vulkan PostFX 1.15.0 — Native & Shadow Stabilization

Highlights

VPFX 1.15.0 focuses on stabilizing the new native rendering path and fixing several long-standing shadow artifacts. This release improves shader pack switching, native backend selection, shadow depth handling, and terrain shadow receiver logic.

Added

  • Added native-first shader pack selection.

    • VPFX now prefers native-compatible external VPFX packs when available.
    • Unsupported packs can still fall back to the Minecraft PostChain backend.

  • Added support for native shadow depth inputs.

    • Native pipelines can now recognize vulkanpostfx:shadow_depth and minecraft:shadow_depth.

  • Added support for use_depth_buffer admission in native graph validation.

    • Valid scene/depth target usage is no longer rejected too early.

  • Added configurable diagnostic throttling options for native and shadow logs.

  • Added default in-world hard resource reload for development builds.

    • Shader pack switching inside a world is now much easier during testing.

Changed

  • Reworked terrain shadow receiver logic.

    • Replaced unstable screen-derivative receiver normal estimation.
    • Replaced unreliable direct Normal attribute usage.
    • Added a stable axis/grid-based receiver mask for block surfaces.

  • Reduced shadow artifacts on vertical block faces.

    • Vertical surfaces that should not receive strong parallel-light shadows are now filtered more safely.

  • Reduced excessive native runtime and shadow diagnostic logging.

    • Legacy NR-1C / NR-1F diagnostic output is now silent by default.
    • Shadow pass and shadow sync logs are throttled by default.

  • Improved failed-pack warning behavior.

    • Failed external pack warnings are no longer spammed every frame.

  • Improved shader pack reload behavior in-world.

    • Development workflow is smoother when repeatedly changing VPFX ZIP packs.

Fixed

  • Fixed shadow/light behavior appearing to rotate with the player camera.
  • Fixed excessive striping on vertical faces perpendicular to the sun/moon movement plane.
  • Fixed use_depth_buffer=true causing valid VPFX packs to be rejected from native admission.
  • Fixed repeated warning spam when an external VPFX pack was marked as failed.
  • Fixed old builtin/default configuration behavior that could leave users stuck on the Builtin Debug Pack.
  • Fixed native backend selection not being obvious when external VPFX packs were available.

Developer Notes

  • The current stable terrain shadow receiver strategy is axis/grid based.
  • VPFX no longer relies on screen-space dFdx/dFdy normals for terrain shadow receiver masking.
  • VPFX also does not yet implement the full Iris/Sodium-style extended terrain vertex normal pipeline.
  • Native multi-pass execution and Showcase pack support continue to be developed.
  • Entity and player shadows remain a later-stage task.

Recommended Test Points

  • Test vertical walls under sun and moon lighting.
  • Test rotating the camera while observing terrain shadows.
  • Test F7 shader pack switching inside a loaded world.
  • Test native-compatible VPFX packs with scene depth and shadow depth inputs.