diff -r 0009b982bc7d -r e5544920377e src/2d.c
--- a/src/2d.c	Wed Jul 02 23:21:17 2025 +0200
+++ b/src/2d.c	Wed Jul 02 23:55:50 2025 +0200
@@ -179,7 +179,7 @@
     } else {
         rectangle->thickness = args.thickness;
     }
-    if (!args.filled && asc_col4_test_zero(args.border_color)) {
+    if (!args.filled && asc_memcmpz(&args.border_color, sizeof(args.border_color))) {
         // convenience fallback:
         // when we are drawing an outline but have no explicit border color,
         // use the active ink
@@ -188,7 +188,7 @@
 
     AscSceneNode *node = &rectangle->node;
     node->position.z = ASC_SCENE_2D_DEPTH_OFFSET;
-    node->scale = asc_vec3f_one;
+    node->scale = ASC_VEC3F_1;
     node->render_group = asc_context.ink.alpha < 255
                              ? ASC_RENDER_GROUP_2D_BLEND
                              : ASC_RENDER_GROUP_2D_OPAQUE;
@@ -333,7 +333,7 @@
     } else {
         ellipsis->thickness = args.thickness;
     }
-    if (!args.filled && asc_col4_test_zero(args.border_color)) {
+    if (!args.filled && asc_memcmpz(&args.border_color, sizeof(args.border_color))) {
         // convenience fallback:
         // when we are drawing an outline but have no explicit border color,
         // use the active ink
@@ -342,7 +342,7 @@
 
     AscSceneNode *node = &ellipsis->node;
     node->position.z = ASC_SCENE_2D_DEPTH_OFFSET;
-    node->scale = asc_vec3f_one;
+    node->scale = ASC_VEC3F_1;
     node->render_group = asc_context.ink.alpha < 255
                              ? ASC_RENDER_GROUP_2D_BLEND
                              : ASC_RENDER_GROUP_2D_OPAQUE;