Pages of Atlas

This release focuses on PBR correctness and NVIDIA shader compatibility when using high-resolution resource packs across multiple physical atlas pages. What's changed

Reworked PBR routing for multi-page terrain atlases
Reuses Iris's native normal and specular samplers for physical atlas page 0
Keeps Pages of Atlas-owned PBR companions only for overflow atlas pages
Preserves full-resolution normal and specular textures on overflow pages
Improved normal/specular alignment across physical atlas boundaries
Reduced unnecessary sampler usage in the Iris/Sodium terrain pipeline
Improved compatibility with NVIDIA GPUs that previously exhausted available texture units
Optimized neutral PBR page initialization
Batched PBR sprite texture uploads to reduce command submission overhead
Staged overflow PBR page construction during terrain rendering

Shader compatibility

Testing includes successful operation with:

Complementary
Complementary + Euphoria Patches
Bliss
Photon
Solas
Kappa 5.4 T6 test builds
Rethinking Voxels
BSL
AstraLex

Additional shader packs have also been tested successfully. Hardware validation

Testing has included both AMD and NVIDIA hardware.

NVIDIA validation included an RTX 3090 Ti running high-resolution Patrix textures with Iris, Sodium, LabPBR, and demanding shader packs including Rethinking Voxels. Notes

Pages of Atlas distributes Minecraft's block texture atlas across multiple physical GPU textures while preserving shader-facing terrain texture behavior.

Shader packs with unusual custom sampling implementations may still require compatibility work.