[freezy]

Bound GPU BC7 encoding submissions and guard padded blocks to prevent Linux GPU hangs during table texture optimization. Preserve texture cache identities across graphics changes and support compatible cached variants.

Validation: coordinated Linux standalone build succeeded; 31 Unity EditMode tests passed. Cold and warm T2 loading completed without an Intel GPU timeout; warm cache loading took 2.1 seconds.

Part of the coordinated fix/urp-player-gpu-cache changes across the engine, player, URP/HDRP adapters, PinMAME, and URP player project.

Coordinated PRs:

• VisualPinball.Engine
• VisualPinball.Engine.Player
• VisualPinball.Unity.Urp
• VisualPinball.Unity.Hdrp
• VisualPinball.Engine.PinMAME
• VisualPinball.Engine.Player.Urp

[greptile-apps]

Confidence Score: 5/5

[Medium impact] The PR appears safe to merge; the remaining request for focused cache tests is non-blocking.

Summary

The PR bounds BC7 work sent to the GPU and keeps cooked textures tied to their source content and cook settings.

• Texture cooks send bounded GPU batches and safely handle padded blocks.
• Texture caches follow texture inputs and cook settings.
• Runtime collider imports use the player's material setup.
• Shared graphics settings now name FSR 1 and STP upscalers.

Diagram

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[Read material sources] --> B{Version 5 cache matches content and settings?}
    B -->|Yes| C[Upload cached textures]
    B -->|No| D[Decode source textures]
    D --> E[Encode bounded BC7 batches]
    E --> F[Finish GPU readbacks]
    F --> G[Upload cooked textures]
    G --> H[Write version 5 cache in background]
    E -->|Failure| I[Use source textures]

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_{Reviews (2) · Last reviewed commit: "Drop legacy texture cache formats and de..." · Reviewed by Greptile}