A DISPATCH_INDIRECT read on the GPU took its group counts unchecked. A count
buffer that a skipped producer never wrote (PPSA08427: 0xffffffff left by
skipped depth-plane passes) launched up to 2^32 groups and kept the GPU busy
until the title hung. The CPU path already refuses counts above
maxComputeWorkGroupCount.
- Recorder::RecordDispatchArguments copies the three counts from the import
into a 12-byte indirect buffer with a one-thread kernel
(DispatchArguments.comp), all three 0 when one exceeds the device limit, as
RecordMeshArguments does for mesh indirect records.
- VulkanDevice records the dispatch from that buffer; without the kernel the
import is read directly, as before.
- agc_driver_indirect_dispatch_limit: 0xffffffff groups run nothing, one group
still runs.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Q8tinbP1MUpUaDsbNWnGnu
