Multiple Consumers

In some cases, the output of a single producer must be sent to multiple consumers. This means that during initialization, the requirements from all of the consumers must be gathered, and sync objects from all of the consumers must be mapped into the producer.

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During streaming, the system must track each buffer's state with regards to all the consumers and wait for fences from all of them to complete before the producer can reuse it. This can be further complicated if one consumer requires FIFO behavior and another requires mailbox. They might return buffers in different orders.

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