Pages of Atlas

0.4.0 replaces the previous direct multi-page block-atlas rendering model with a production virtual-atlas architecture for oversized resource packs. Added

Added a fixed 32768×32768 logical block-atlas address space backed by four independently allocated physical atlas pages, each capped at 16384×16384.
Added automatic virtual-atlas activation when the block atlas requires more than one physical texture.
Added logical virtual sprites so Minecraft, Fabric Renderer API, Sodium, and Continuity can operate in one continuous sprite/UV space while Pages of Atlas retains separate physical sprites for GPU upload.
Added dedicated virtual-atlas terrain shaders for Minecraft and Sodium.
Added page-aware item and block-model rendering for vanilla/Fabric Renderer API, Indigo, and Sodium rendering paths.
Added page-aware Sodium extended block-model rendering used by item frames and other block-model feature renderers.
Added generation-aware publication of virtual atlas plans and uploads.
Added optional virtual-atlas diagnostics for page placement, physical-page routing, and UV conversion.

Changed

Reworked oversized block-atlas packing around one logical atlas instead of exposing physical pages directly to normal sprite lookup and rendering.
Terrain now derives physical-page ownership from logical atlas UVs and converts those coordinates to page-local UVs at render time.
Reworked block-item rendering to resolve the correct physical page per quad.
Updated Fabric Renderer API and Indigo quad handling for logical-to-physical page translation.
Updated Sodium sprite lookup and terrain rendering for the logical atlas.
Updated Continuity CTM lookup to search the combined logical sprite space.
Expanded Iris shader transformation support for virtual-atlas UV conversion, physical-page sampling, and PBR companion textures.
Preserved normal/specular PBR page alignment with the corresponding diffuse physical page.
Removed the previous proof-of-concept activation path; oversized block atlases now select the production virtual renderer automatically.
Resource packs that fit on one physical page continue to use Minecraft's normal single-atlas path.

Fixed

Fixed item-frame and Sodium extended block-model rendering when a block texture resides on a secondary physical atlas page.
Fixed logical sprite lookup for Fabric Renderer API, Sodium, and Continuity while retaining physical page-zero state required by upload and PBR code.
Fixed page-local terrain sampling so implicit derivatives and mip selection remain correct after virtual-to-physical UV conversion.
Fixed Photon POM coordinate routing through the virtual atlas.
Fixed Solas compatibility for shader programs whose mid-texture-coordinate inputs differ from other Iris shader packs.

Compatibility

Validated on Minecraft 26.2 with high-resolution Patrix resource packs, Sodium, Iris, Continuity, Photon, Solas, and Complementary / Unbound. Requirements

Minecraft 26.2
Fabric Loader 0.19.3+
Fabric API 0.156.0+
Iris 1.11.2+
Sodium 0.9.1+