Adds -Explode: the pentapus cockpit instruments (radar + 5 mono MFDs, the VDB
video-splitter decode) render on the SECONDARY monitor while the reconstructed
i860+GPU 3D renderer stays the main out-the-window view on the primary. The
window rects auto-fit to whatever the non-primary display is (detected via
System.Windows.Forms.Screen, so it survives a monitor rearrange), scaled to
~0.6 and offset into that display's virtual-desktop region; the DOSBox SVGA
screen parks clear of the cluster.
The cockpit windows live in vpxlog's rt_main thread, which only starts under
VPX_RENDER=1 -- the same flag whose DOSBox-thread scene-graph decode previously
stalled wire delivery (fixed earlier by removing it). Feared this would bite
again; MEASURED and it does NOT: with VPX_EXPLODE + VPX_NOMAIN the heavy main-
window 3D render (rt_draw, gated on the main window existing) is skipped, so
rt_main only does the cheap per-tick MFD/radar blits and the DOSBox thread keeps
up. Live-verified: all 6 cockpit windows placed on the secondary (DISPLAY1),
renderer on the primary, wire advancing normally to cmd 23k+ (no command-8
stall), frames flowing.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
CydandClaude Opus 4.8
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