Jonah Williams a4b4cae1a8 [Impeller] Create a drawable backed TextureMTL. (flutter/engine#48049) ...

Allow creating a TextureMTL instance that is backend by a CAMetalLayer, which only acquires the drawable (and texture) lazily.

I split TextureMTL into two subclasses, one that has the standard wrapping behavior of a MTLTexture, and the other that holds a drawable. This is part of the foundational work for "removing drawable acquisition latency", as we need to delay aquisition of the drawable texture to a worker thread.

The drawable backed texture is only used in tests for now.

Part of https://github.com/flutter/flutter/issues/138490

2023-11-16 17:50:18 +00:00

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src/flutter

[Impeller] Create a drawable backed TextureMTL. (flutter/engine#48049)

2023-11-16 17:50:18 +00:00