1 files changed, 21 insertions, 0 deletions
diff --git a/src/mbgl/shader/outlinepattern.vertex.glsl b/src/mbgl/shader/outlinepattern.vertex.glsl
new file mode 100644
index 0000000000..e31b77b560
--- /dev/null
+++ b/src/mbgl/shader/outlinepattern.vertex.glsl
@@ -0,0 +1,21 @@
+uniform vec2 u_patternscale_a;
+uniform vec2 u_patternscale_b;
+uniform vec2 u_offset_a;
+uniform vec2 u_offset_b;
+
+attribute vec2 a_pos;
+
+uniform mat4 u_matrix;
+uniform vec2 u_world;
+
+varying vec2 v_pos_a;
+varying vec2 v_pos_b;
+varying vec2 v_pos;
+
+
+void main() {
+    gl_Position = u_matrix * vec4(a_pos, 0, 1);
+    v_pos_a = u_patternscale_a * a_pos + u_offset_a;
+    v_pos_b = u_patternscale_b * a_pos + u_offset_b;
+    v_pos = (gl_Position.xy/gl_Position.w + 1.0) / 2.0 * u_world;
+}