- the weights go into the command buffer with vkCmdUpdateBuffer (recordContents); the host-visible staging
copies are gone, and the host copies are dropped once recorded
- an engine's own output image is created only for frames that do not write the caller's texture
(K, M, RR D/E, RR F), cleared on first use
- preset F: the tile slots share the arena with the network's regions, and the gather records' rows fill the
gaps between encoder 0's regions (rr.txt "s3", six words on enc0's block; D4R_ENGINE_RR_ARENA keeps the
old separate layout for arena dumps)
- the shim reserves the render size the feature was created with for the M/L Vulkan network instead of the
output size; a frame beyond it goes to a second, output-sized engine (1.1 GB less for M, 1.4 for L at
1280x720 -> 4K); replay_m gains D4R_M_CAPACITY
Every reference capture still byte-identical; through the shim the harness process peaks 159 MiB lower.
woutermans
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