Add chams

- Hook IVModelRender::DrawModelExecute (VEngineModel016 slot 19) and force
  models/debug/debugwhite for NPC models, identified by
  ModelRenderInfo_t::entity_index.
- Two passes: MATERIAL_VAR_IGNOREZ through walls, then normal depth, with
  IMaterial::ColorModulate for the configured colour; restore the shared
  material's flag/colour afterwards.
- Material lookup via the IMaterialSystem list, FindMaterial fallback.
- New Chams feature/card with Through walls and colour; [chams] config.
- Remove the temporary ammo/projectile/fuse diagnostics.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/gui.cpp b/src/gui.cpp
index 2f832a2..a38f537 100644
--- a/src/gui.cpp
+++ b/src/gui.cpp
@@ -423,6 +423,13 @@ static void build_cards() {
   add_toggle(proj, "Blast radius",
              "Draw the projectile's damage radius on the ground.", &g_proj_radius);
 
+  int chams = add_card(2, &g_chams, "Chams",
+                       "Flat-colour NPC models.", true);
+  add_toggle(chams, "Through walls",
+             "Draw a second pass with the depth test disabled.",
+             &g_chams_walls);
+  add_color(chams, "Colour", "Chams colour.", g_chams_rgb);
+
   int view = add_card(2, nullptr, "Camera / display",
                       "Camera FOV, viewmodel FOV and HDR brightness.", true);
   add_slider(view, "Camera FOV",