Chams: tint through $color/$color2 and log the chosen material

ColorModulate alone left the forced material white. Also set the shader's
$color and $color2 vars (IMaterialVar SetVecValue 3-float) and restore them to
white after the draw. Log which fallback material was selected.

1 files changed, 9 insertions, 4 deletions

diff --git a/CONTEXT.md b/CONTEXT.md
index 1fe24a0..60a5a91 100644
--- a/CONTEXT.md
+++ b/CONTEXT.md
@@ -287,11 +287,16 @@ vocabulary / decisions.
 - Uses `IVModelRender::ForcedMaterialOverride` (slot 1) with
   `models/debug/debugwhite` and draws twice: first with
   `MATERIAL_VAR_IGNOREZ` (1 << 15) set through `IMaterial::SetMaterialVarFlag`
-  (slot 29) for the through-wall pass, then without it. `IMaterial::
-  ColorModulate` (slot 28) applies the configured colour. The shared material's
-  flag and colour are restored to (false, white) after the draw.
+  (slot 29) for the through-wall pass, then without it. Colour is applied via
+  `IMaterial::ColorModulate` (slot 28) **and** the shader's `$color`/`$color2`
+  vars (IMaterialVar slot 11, SetVecValue 3-float slot 11), because some forced
+  materials ignore ColorModulate. The shared material's flag and colour are
+  restored to (false, white) after the draw.
 - Material lookup walks the `IMaterialSystem` list (`world_find_material`), with
-  `FindMaterial` (slot 71) as the fallback for a not-yet-resident material.
+  `FindMaterial` (slot 71) as the fallback. Candidates, in order:
+  `models/debug/debugwhite{2,3}`, `vgui/white`,
+  `debug/debugtranslucentsinglecolor`, `debug/debugwireframevertexcolorignorez`.
+  The chosen material name is logged.
 - Feature is off by default; `[chams] active/bind/walls/r/g/b`, with a
   "Through walls" toggle and colour picker in the Visuals card.
 - This is a flat material override, not stencil outlines; depth handling is