Summary

• we were pass uniform arrays by reference, which WebGPU spec does not allow (Chrome is ok with it, Firefox correctly is rejecting this)
• Inlines the WGSL resolveCodebook function at all 3 call sites to fix Firefox WebGPU shader validation errors
• Firefox's naga WGSL compiler rejects ptr<uniform, ...> as a function parameter per the WGSL spec (only function, private, and workgroup address spaces are allowed for pointer parameters)
• Codebook uniform arrays are now accessed directly at each call site instead of being passed through a function

Files changed

• src/scene/shader-lib/wgsl/chunks/gsplat/frag/gsplatPacking.js — Removed resolveCodebook function
• src/scene/shader-lib/wgsl/chunks/gsplat/frag/gsplatSogReorder.js — Inlined codebook resolution for scales_codebook and sh0_codebook
• src/scene/shader-lib/wgsl/chunks/gsplat/frag/gsplatSogReorderSh.js — Inlined codebook resolution for shN_codebook

Test plan

• Verify SOG gaussian splat rendering works correctly on Chrome (WebGPU)
• Verify SOG gaussian splat rendering works correctly on Firefox (WebGPU)
• Verify no shader validation errors in Firefox console

Made with Cursor