diff --git a/manimlib/shaders/quadratic_bezier_fill/frag.glsl b/manimlib/shaders/quadratic_bezier_fill/frag.glsl
index fee4aec1..e5341459 100644
--- a/manimlib/shaders/quadratic_bezier_fill/frag.glsl
+++ b/manimlib/shaders/quadratic_bezier_fill/frag.glsl
@@ -10,7 +10,9 @@ in float is_linear;
 
 out vec4 frag_color;
 
-float sdf(float x0, float y0){
+float sdf(){
+    float x0 = uv_coords.x;
+    float y0 = uv_coords.y;
     if(bool(is_linear)) return abs(y0);
 
     float Fxy = y0 - x0 * x0;
@@ -24,6 +26,5 @@ void main() {
     if (color.a == 0) discard;
     frag_color = color;
     if (bool(fill_all)) return;
-    float dist = sdf(uv_coords.x, uv_coords.y);
-    frag_color.a *= smoothstep(1, 0, dist / uv_anti_alias_width);
+    frag_color.a *= smoothstep(1, 0, sdf() / uv_anti_alias_width);
 }