tree 1c269bbf5b54ddff42766e032a634735aa02ec29
parent b8f0828da77a1e43d4f0ccfee86b4bd6f0fed331
author Bill Hollings <bill.hollings@brenwill.com> 1652208715 -0400
committer Bill Hollings <bill.hollings@brenwill.com> 1652208715 -0400

Fix error on some Apple GPU's where a vkCmdTimestampQuery() after a
renderpass was writing timestamp before renderpass activity was complete.

MVKCommandBuffer tracks whether it contains a stage-based timestamp command,
and MVKCommandEncoder updates the timestamp command fence when ending any
Metal command encoder on such a MVKCommandBuffer.

MVKCommandEncoder reorder member variables to avoid layout gaps (unrelated).
MVKCommandBuffer update _commandCount even for single-use immediate command
encoding (unrelated).