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AlphaMatte

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AlphaMatte

By nurlucas

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Capture entities and players into clean, 32-bit transparent RGBA PNG cutouts with zero lag.

Mod Loaders
Minecraft
26.3
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About

Description

AlphaMatte

A high-performance client-side Fabric mod for Minecraft 26.3 that captures isolated, transparent 32-bit RGBA cutouts of in-game entities and players straight to .minecraft/screenshots/cutouts/ with zero client lag.

Features

  • True 32-bit RGBA Transparency: Native alpha preservation directly from an offscreen RenderPearl framebuffer. No black background masks, chroma keying, or fringing halos.
  • Clean Isolation: Entity shadows and floating nametags are automatically omitted from cutouts.
  • Dual Capture Modes:
    • Studio Mode: Perfectly lit, centered, upright wiki-style render with neutral pose and dual studio key/fill lighting (ENTITY_IN_UI).
    • Camera Mode (WYSIWYG): 1:1 match with your live in-game camera angle, field of view, distance, and environmental lighting.
    • Auto Mode: Intelligently chooses Camera Mode when viewing third-person or targeting mobs, and Studio Mode for first-person self-portraits.
  • Supersampling (1x, 2x, 4x): Renders high-DPI, ultra-sharp cutouts on demand.
  • Optional Auto-Crop: Automatically crops transparent canvas padding down to the entity's bounding box for instant sticker/wiki use.
  • Zero Client Lag: GPU texture readback runs asynchronously via dedicated readback buffers, and PNG compression is offloaded to background IO threads.
  • Clickable Chat Link: Directly open captured PNGs with one click from chat.

Controls & Commands

  • Default Keybind: F10 (rebindable under Options > Controls > Key Binds > Miscellaneous).
  • Targeting: Aim at an entity to isolate that target, or look away to capture yourself.
Command Description
/alphamatte capture Triggers a cutout capture via chat
/alphamatte mode <auto\|camera\|studio> Sets active capture mode
/alphamatte supersample <1\|2\|4> Sets supersampling multiplier (1 = native)
/alphamatte autocrop <true\|false> Toggles tight bounding box cropping
/alphamatte shadows <true\|false> Toggles entity shadow suppression
/alphamatte nametags <true\|false> Toggles entity nametag suppression

Requirements

  • Requires Fabric API
  • Client-side only