The primary signal is desiredSize on the controller. It can be positive (wants data), zero (at capacity), negative (over capacity), or null (closed). Producers are supposed to check this value and stop enqueueing when it's not positive. But there's nothing enforcing this: controller.enqueue() always succeeds, even when desiredSize is deeply negative.
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Your shaders compile with whatever stable toolchain you're already using.
Equal: Every domino half in this space must be the same number of pips.，这一点在PDF资料中也有详细论述
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