feat(render): double-single fills for the face3d pipeline

Table / PolyfaceMesh / greek-text / mleader-background fills go through
the face3d pipeline; their vertices were single f32 and quantized at UTM
scale. WireModel now carries a fill_tris_low residual (filled by the
tessellate Lines path), Face3DVertex gains position_low (location 3), and
face3d.wgsl reconstructs the eye-relative position from the pair. 3DFACE
quads built from key_vertices use a zero residual (no low source).

Co-Authored-By: Claude Opus 4.7 <[email protected]>

src/modules/annotate/aligned_dim.rs

@@ -108,6 +108,7 @@ impl CadCommand for AlignedDimensionCommand {
             plinegen: true,
             vp_scissor: None,
             fill_tris: vec![],
+            fill_tris_low: Vec::new(),
         })
     }
 }
@@ -149,6 +150,7 @@ fn preview_aligned(p1: Vec3, p2: Vec3, dim_pt: Vec3) -> WireModel {
         plinegen: true,
         vp_scissor: None,
         fill_tris: vec![],
+        fill_tris_low: Vec::new(),
     }
 }
 

src/modules/annotate/angular_dim.rs

@@ -140,6 +140,7 @@ fn preview_wire(points: Vec<Vec3>) -> WireModel {
         plinegen: true,
         vp_scissor: None,
         fill_tris: vec![],
+        fill_tris_low: Vec::new(),
     }
 }
 

src/modules/annotate/diameter_dim.rs

@@ -111,6 +111,7 @@ fn preview_line(a: Vec3, b: Vec3) -> WireModel {
         plinegen: true,
         vp_scissor: None,
         fill_tris: vec![],
+        fill_tris_low: Vec::new(),
     }
 }
 

src/modules/annotate/dim_baseline.rs

@@ -169,6 +169,7 @@ impl CadCommand for DimBaselineCommand {
             plinegen: true,
             vp_scissor: None,
             fill_tris: vec![],
+            fill_tris_low: Vec::new(),
         })
     }
 }

src/modules/annotate/dim_continue.rs

@@ -149,6 +149,7 @@ impl CadCommand for DimContinueCommand {
             plinegen: true,
             vp_scissor: None,
             fill_tris: vec![],
+            fill_tris_low: Vec::new(),
         })
     }
 }

src/modules/annotate/dimjogline.rs

@@ -106,6 +106,7 @@ impl CadCommand for DimJogLineCommand {
             plinegen: true,
             vp_scissor: None,
             fill_tris: vec![],
+            fill_tris_low: Vec::new(),
         })
     }
 }

src/modules/annotate/dimtedit.rs

@@ -120,6 +120,7 @@ impl CadCommand for DimTeditCommand {
             plinegen: true,
             vp_scissor: None,
             fill_tris: vec![],
+            fill_tris_low: Vec::new(),
         })
     }
 

src/modules/annotate/leader_cmd.rs

@@ -179,6 +179,7 @@ fn preview_wire(pts: &[Vec3]) -> WireModel {
         plinegen: true,
         vp_scissor: None,
         fill_tris: vec![],
+        fill_tris_low: Vec::new(),
     }
 }
 

src/modules/annotate/linear_dim.rs

@@ -147,6 +147,7 @@ fn preview_wire(points: Vec<Vec3>) -> WireModel {
         plinegen: true,
         vp_scissor: None,
         fill_tris: vec![],
+        fill_tris_low: Vec::new(),
     }
 }
 

src/modules/annotate/mleader_cmd.rs

@@ -165,6 +165,7 @@ fn preview_wire(pts: &[Vec3]) -> WireModel {
         plinegen: true,
         vp_scissor: None,
         fill_tris: vec![],
+        fill_tris_low: Vec::new(),
     }
 }
 

src/modules/annotate/mleader_edit.rs

@@ -472,6 +472,7 @@ fn preview_wire(pts: &[Vec3]) -> WireModel {
         plinegen: true,
         vp_scissor: None,
         fill_tris: vec![],
+        fill_tris_low: Vec::new(),
     }
 }
 

src/modules/annotate/qdim.rs

@@ -104,6 +104,7 @@ impl CadCommand for QdimCommand {
             plinegen: true,
             vp_scissor: None,
             fill_tris: vec![],
+            fill_tris_low: Vec::new(),
         })
     }
 }

src/modules/annotate/radius_dim.rs

@@ -116,6 +116,7 @@ fn preview_wire(points: Vec<Vec3>) -> WireModel {
         plinegen: true,
         vp_scissor: None,
         fill_tris: vec![],
+        fill_tris_low: Vec::new(),
     }
 }
 

src/modules/annotate/table_cmd.rs

@@ -164,6 +164,7 @@ impl CadCommand for TableCommand {
                 plinegen: true,
                 vp_scissor: None,
                 fill_tris: vec![],
+                fill_tris_low: Vec::new(),
             })
         } else {
             None

src/modules/annotate/tolerance_cmd.rs

@@ -106,6 +106,7 @@ impl CadCommand for ToleranceCommand {
             plinegen: true,
             vp_scissor: None,
             fill_tris: vec![],
+            fill_tris_low: Vec::new(),
         })
     }
 }