--- a/shaders/extra_window.v.glsl	Wed Apr 17 20:50:24 2024 -0700
+++ b/shaders/extra_window.v.glsl	Wed Apr 17 21:54:44 2024 -0700
@@ -1,10 +1,11 @@
 
 attribute vec2 pos;
+attribute vec2 uv;
 varying mediump vec2 texcoord;
 uniform mediump float width, height;
 
 void main()
 {
 	gl_Position = vec4(pos, 0.0, 1.0);
-	texcoord = sign(pos) * vec2(0.5 * width, -0.5 * height) + vec2(0.5 * width, 0.5 * height);
+	texcoord = uv;
 }