1 files changed, 10 insertions, 0 deletions
diff --git a/src/mbgl/shader/circle.fragment.glsl b/src/mbgl/shader/circle.fragment.glsl
new file mode 100644
index 0000000000..7267bf81e3
--- /dev/null
+++ b/src/mbgl/shader/circle.fragment.glsl
@@ -0,0 +1,10 @@
+uniform vec4 u_color;
+uniform float u_blur;
+uniform float u_size;
+
+varying vec2 v_extrude;
+
+void main() {
+    float t = smoothstep(1.0 - u_blur, 1.0, length(v_extrude));
+    gl_FragColor = u_color * (1.0 - t);
+}