Missile/jet trail position history is a fixed guest-address ring, so its
vertex fetch constants never change and the command processor's
vertex_buffer_states_ address cache skipped RequestRange forever, the GPU
copy of the trail history froze at zero (trails invisible) while CPU memory was
correct.
Register a physical-memory invalidation callback that flags when the CPU writes
watched GPU-visible memory, and drop the cached vertex-buffer states at the next
draw so the ring's pages get re-uploaded. Also notify those callbacks from the
access-violation page-recovery path (xmemory), since a recovered page becomes
read-write and would otherwise never fault again to report the write. Gated by
ac6_fix_trails (default ON).
Suspend the FPS unlock while a demo-manager Exec (DD sub_82184460 / EM sub_821856F8) ticks, so the frame-locked IngameCinematics Sequencer plays at native ~30fps instead of double speed. Adds ac6_cutscene_clamp CVar (default on).
D3D12 previously assumed native point-list + geometry-shader expansion; that path can drop or rasterize points incorrectly (invisible missile trails). Default to the shared triangle-strip VS expansion path with an init-time CVar override.
Vulkan: default vulkan_force_expand_point_sprites_in_vs to true for the same behavior on non-D3D12 hosts.
Made-with: Cursor
Add a native SDL3 audio driver for non-Windows hosts and gate WASAPI to Windows-only builds, so Linux builds no longer depend on Windows headers while keeping runtime telemetry and queue behavior intact.
Made-with: Cursor
Dipshet