Chams: make Fullbright a white-hot additive glow

Fullbright was additive with the chosen colour lifted only 25% toward white,
which on a dark scene looked almost identical to Solid/Flat. Force white for
the Fullbright colour so the additive pass reads as a distinctly brighter,
white-hot glow; the faint translucent base still gives it a silhouette on
bright backgrounds.

1 files changed, 2 insertions, 1 deletions

diff --git a/CONTEXT.md b/CONTEXT.md
index 1bb0a6a..bfb0d8e 100644
--- a/CONTEXT.md
+++ b/CONTEXT.md
@@ -304,7 +304,8 @@ vocabulary / decisions.
   `$color`) and material flags:
   0 Flat (solid + FLAT), 1 Wireframe (`debug/debugwireframe`), 2 Additive
   (+ ADDITIVE), 3 Solid, 4 White (colour forced white), 5 Fullbright
-  (ADDITIVE|SELFILLUM with the colour lifted toward white), 6 Glow outline
+  (ADDITIVE|SELFILLUM, colour forced white so it reads as a white-hot glow
+  instead of matching Solid), 6 Glow outline
   (solid plus a `debug/debugwireframe` contour pass drawn with ZNEARER
   (1 << 10) and a brightened colour so the base cannot bury it).
   `vgui/white` is vertex-colour based and has no `$model`/`$basetexture`, so it