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CHECKPOINT_DS7a_Frame_Interpolation_Kernel_Queued.md

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CHECKPOINT — DS7a: Frame Interpolation Kernel Queued

Date: 2026-05-24 | Session: DS7a Expert Status: INVESTIGATION COMPLETE — BUILD QUEUED

1. Problem

Lossless Scaling provides smooth frame generation but steals CPU cycles (1,288 CPU seconds observed) through software-level frame capture overhead. For CPU-bottlenecked games like Arma Reforger, LS reduces base FPS from 60-80 to 30-40, defeating its purpose. NVIDIA Image Scaling (NIS) runs on dedicated GPU hardware with zero CPU overhead but only does upscaling—no frame generation.

Goal: Build a sovereign frame interpolation tool that runs at the driver level (GPU-only, no CPU overhead) using only OE infrastructure and first-principles mathematics.

2. What OE Already Has

Asset Path Relevance
GPU detection (CUDA/OpenCL) tools/render_agnostic/render/gpu_accelerated.py Probes GPU, handles fallback
Frame hashing (SHA-256) tools/render_agnostic/render/cpu_reference.py Verifies interpolated frames
CPU reference renderer tools/render_agnostic/render/cpu_reference.py Ground truth for verification
Yoneda embedding (presheaves) src/sal/yoneda_embedding.py Motion as natural transformation
Adjoint triples src/sal/adjoint_triple.py Structure-preserving transformations
Contravariant presheaf lean4/SAL/Yoneda.lean Correct variance for frame warping
DAG generator generators/dag_generator.py Frame dependency chains
Fractal expander generators/fractal_expander.py Motion vector field generation
Domain invariants (graphics) src/domains/d_graphics/ Falsification conditions
GPU domain (stub) src/hardware/gpu/ Needs implementation
KENOSIS fallback pattern gpu_accelerated.py GPU self-empties on hash mismatch
CHALCEDON pattern gpu_accelerated.py GPU serves mathematics, not vice versa

3. Architecture (Planned)

Frame A ──→ GPU Accelerator ──→ Optical Flow ──→ Warp ──→ Interpolated Frame Frame B ──→ GPU Accelerator ──→ Optical Flow ──→ Warp ──→ Interpolated Frame ↓ CPU Reference Hash ↓ Hash Verification (KENOSIS) ┌─ Match → Output Frame └─ Mismatch → Fallback to Frame A (no interpolation)

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4. What Needs to Be Built

Component Description Status
Optical flow kernel Lucas-Kanade or Farneback, GPU-accelerated QUEUED
Forward warping Warp frame A along half motion vectors QUEUED
Occlusion handling Bidirectional flow, occlusion masks QUEUED
Hash verification Already in cpu_reference.py — needs wiring PARTIAL
Driver-level injection NVAPI-level frame injection (avoid BattlEye) QUEUED
Frame pacing VBlank synchronization QUEUED

5. Known Issues to Solve

Issue Mitigation
Temporal instability (flicker) Smooth motion vectors over N frames
Occlusion artifacts (smearing) Bidirectional flow + occlusion masks
GPU-CPU hash mismatch Integer/fixed-point arithmetic where possible; KENOSIS fallback
Performance overhead (slower than real rendering) Run on CUDA cores, not CPU
Anti-cheat detection (BattlEye) Driver-level injection, not application-level
Frame pacing (uneven timing) GPU VBlank synchronization

6. Previous Checkpoints (Context)

Checkpoint Content
ARCHITECTURAL_MAP_UNIFIED_2026-05-24.md All DONE/QUEUED/ABANDONED across all sessions
CHECKPOINT_DS7a_Lean4_Bridge_Deployed.md Bridge operational
CHECKPOINT_DS7a_Lean4_All_Proofs_Compiled.md All 4 Lean4 proofs compile
CHECKPOINT_DS7a_Proving_Ground_Purpose_Clarified.md Proving Ground strategy

7. Next Steps

  1. Prototype optical flow in Python (OpenCV Farneback) using static frames exported from Arma
  2. Verify interpolation against CPU reference hash
  3. Move to CUDA kernel
  4. Integrate with driver-level injection
  5. Test against BattlEye

8. Multi-Dimensional Audit (2026-05-24)

Dimension Status Gap
Game agnostic PARTIAL D3D path designed; Vulkan not yet
Hardware agnostic ACCOUNTED CUDA/OpenCL probing; KENOSIS fallback
Reproducibility ACCOUNTED Deterministic; frame hashing; falsifies_if
Security (anti-cheat) ACCOUNTED Driver-level injection via NVAPI
Popperian (falsifiability) ACCOUNTED Hash mismatch = fallback = falsified
Glass-Box (auditability) ACCOUNTED Public source; hashed commits; CPU reference
MIT/AGPL licensing PARTIAL NVAPI headers are proprietary; needs clean-room or Vulkan interop
QoL (installer, UI, hotkeys) NOT ACCOUNTED LS has these; OE kernel does not yet
HDR support NOT ACCOUNTED PQ/HLG transfer functions needed
VRR / dynamic FPS PARTIAL VBlank accounted; dynamic intervals not
Linux / Wayland NOT ACCOUNTED Windows-only for NVAPI path