yes

modules/wallpaper-engine/shaders/downsample_quarter.vert

@@ -0,0 +1,15 @@
+
+attribute vec3 a_Position;
+attribute vec2 a_TexCoord;
+
+uniform vec2 g_TexelSize;
+
+varying vec2 v_TexCoord[4];
+
+void main() {
+	gl_Position = vec4(a_Position, 1.0);
+	v_TexCoord[0] = a_TexCoord - g_TexelSize * 2;
+	v_TexCoord[1] = a_TexCoord + g_TexelSize * 2;
+	v_TexCoord[2] = a_TexCoord + vec2(-g_TexelSize.x, g_TexelSize.y) * 2;
+	v_TexCoord[3] = a_TexCoord + vec2(g_TexelSize.x, -g_TexelSize.y) * 2;
+}