1 files changed, 28 insertions, 1 deletions
diff --git a/chickadee/graphics/shapes.scm b/chickadee/graphics/shapes.scm
index 79a73b6..e5d985c 100644
--- a/chickadee/graphics/shapes.scm
+++ b/chickadee/graphics/shapes.scm
@@ -165,7 +165,7 @@ void main(void) {
 "
               "
 #ifdef GLSL120
-attribute vec2 fragTex;
+varying vec2 fragTex;
 #else
 in vec2 fragTex;
 #endif
@@ -196,6 +196,32 @@ void main (void) {
     }
     dy = abs(v);
 
+#ifdef GLSL120
+    // none
+    if (cap == 0) {
+      d = infinity;
+    }
+    // butt
+    else if (cap == 1) {
+      d = max(dx + w / 2 - 2 * r, dy);
+    }
+    // square
+    else if (cap ==  2) {
+      d = max(dx, dy);
+    }
+    // round
+    else if (cap == 3) {
+      d = sqrt(dx * dx + dy * dy);
+    }
+    // triangle out
+    else if (cap == 4) {
+      d = dx + dy;
+    }
+    // triangle in
+    else if (cap == 5) {
+      d = max(dy, w / 2 - r + dx - dy);
+    }
+#else
     switch (cap) {
     // none
     case 0:
@@ -222,6 +248,7 @@ void main (void) {
       d = max(dy, w / 2 - r + dx - dy);
       break;
     }
+#endif
   } else {
     d = abs(v);
   }