fix: WebGPU memory alignment and aesthetic pass

[ford442]

Fixed the WebGPU uniform buffer layout mismatch causing rendering artifacts by adjusting memory writing offsets in src/webgpu/viewUniforms.ts and src/webgpu/viewMaterials.ts to properly align the mapping with the FragmentUniforms struct in pbrBlocks.ts. Addressed shader function signature mismatch applyMaterialParticleInteraction. Removed duplicate properties in effects.ts. Properly configure the block texture inside the imageSampled theme instantiation logic and adjusted the fragment shader to use correct base alpha mapping.

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PR created automatically by Jules for task 17774929731782567112 started by @ford442

Summary by CodeRabbit

• New Features

  • Enhanced block rendering with richer materials, including glass, metal, subsurface, clearcoat, hologram, lava, and glow effects.
  • Added improved texture-based material masking and more detailed lighting, shadows, and environmental effects.
  • Added stronger visual feedback for hard drops.

• Bug Fixes

  • Improved reliability of hard-drop effect triggering.
  • Refined visual effect timing for smoother saturation transitions.

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Review details

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: ef5a0e25-9710-458a-9d82-b78e7fe45de0

📥 Commits

Reviewing files that changed from the base of the PR and between cc14ac6 and f84aee4.

📒 Files selected for processing (5)

• index.ts
• src/game.ts
• src/webgpu/effects.ts
• src/webgpu/shaders/pbrBlocks.ts
• src/webgpu/viewMaterials.ts

📝 Walkthrough

Walkthrough

The change expands block PBR shader generation and material uniform wiring, configures authored block textures, updates saturation decay, and synchronizes hard-drop effect flags on both synchronous and asynchronous paths.

Changes

Block rendering and effects

Layer / File(s)	Summary
Runtime effect and texture inputs index.ts, src/game.ts, src/webgpu/effects.ts	Texture configuration and metal thresholds are initialized, hard drops set the instance effect flag, and saturation decay uses rational attenuation.
Shader and uniform contract src/webgpu/shaders/pbrBlocks.ts, src/webgpu/viewMaterials.ts	Local PBR helpers and shader builders replace re-exports, while fragment uniform writes use the expanded material layout.
Fragment material rendering src/webgpu/shaders/pbrBlocks.ts	The fragment shader adds authored-mask handling, ghost and hologram paths, PBR material branches, particle interactions, lighting overlays, board effects, dissolve glow, and premultiplied output.

Estimated code review effort: 4 (Complex) | ~60 minutes

Sequence Diagram(s)

sequenceDiagram
  participant Game
  participant updateMaterialUniforms
  participant PBRBlockShaders
  participant GPUResources
  Game->>Game: Set effectFlag on hard drop
  updateMaterialUniforms->>PBRBlockShaders: Write material-type and fragment uniforms
  GPUResources->>PBRBlockShaders: Provide texture and dissolve-field data
  PBRBlockShaders-->>GPUResources: Produce shaded premultiplied block output

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Possibly related PRs

• ford442/Tetris_WebGPU#301: Overlaps the PBR shader and CPU-to-shader uniform layout changes.
• ford442/Tetris_WebGPU#383: Also updates hard-drop paths to set the instance effect flag.
• ford442/Tetris_WebGPU#292: Updates the block texture metal and glass classification thresholds.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix-webgpu-memory-alignment-17774929731782567112

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