yes

modules/wallpaper-engine/shaders/brushpreview.vert

@@ -0,0 +1,12 @@
+
+attribute vec3 a_Position;
+attribute vec2 a_TexCoord;
+
+uniform mat4 g_ModelViewProjectionMatrix;
+
+varying vec2 g_TexCoord;
+
+void main() {
+	gl_Position = mul(vec4(a_Position, 1.0), g_ModelViewProjectionMatrix);
+	g_TexCoord = a_TexCoord;
+}