yes

modules/wallpaper-engine/shaders/flat.vert

@@ -0,0 +1,16 @@
+
+uniform mat4 g_ModelViewProjectionMatrix;
+
+attribute vec3 a_Position;
+attribute vec4 a_Color;
+
+#ifdef VERTEXCOLOR
+varying vec4 v_Color;
+#endif
+
+void main() {
+	gl_Position = mul(vec4(a_Position, 1.0), g_ModelViewProjectionMatrix);
+#ifdef VERTEXCOLOR
+	v_Color = a_Color.rgba;
+#endif
+}