The article reverse-engineers Apple's undocumented lossy compression format used in A15 and M2 GPUs, which achieves 1:2 compression for GPU textures. By exploiting Metal heap aliasing, the author inspects raw compressed bytes to understand the format's implementation. The analysis provides valuable insights for developers optimizing GPU memory in Metal applications.
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Metal Lossy Compression Format
Engineer reverse-engineers Apple's undocumented GPU texture compression (1:2 ratio on A15/M2) via Metal heap aliasing, unlocking practical optimization insights for developers.
Saturday, April 25, 2026 12:00 PM UTC2 MIN READSOURCE: LobstersBY sys://pipeline
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