Draw the three VDB display palettes as 256-color bars along the bottom of the
GL render window, updated every frame straight from the VDB storage -- a live
view (like the Division output) instead of static snapshots. This matters
because pal0 (secondary) animates and the earlier file dumps caught pal0/pal2
at their SVGAZeroPalette init (all black); live, pal2 is actually a rich
4-region color map (green/blue/red/gray-purple, 64 entries each) and pal1 the
red/green/olive status palette. Toggle with VPX_VDBSTRIP=0.
Also: VDB_PALDUMP now keeps the most-lit snapshot per group (max non-black
bytes) so file dumps no longer capture the zero-init. VDBPalette storage moved
above the render thread so rt_draw can read it.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
CydandClaude Opus 4.8
68e595c5a2
