# HG changeset patch
# User Michael Pavone <pavone@retrodev.com>
# Date 1503558136 25200
# Node ID 7da675d0c5129c28759d770cdb6c468c2b853fc5
# Parent  e2bd03ed3190d057036e0f311554e96d6f2cdef8
Small fix submitted by Anaël Seghezzi to his subtle crt shader

diff -r e2bd03ed3190 -r 7da675d0c512 shaders/crt.f.glsl
--- a/shaders/crt.f.glsl	Wed Aug 23 21:18:17 2017 -0700
+++ b/shaders/crt.f.glsl	Thu Aug 24 00:02:16 2017 -0700
@@ -50,8 +50,8 @@
 	vec2 texco = monitorcoord * vec2(width/1024.0, height/-1024.0) + vec2(width/1024.0, height/1024.0);
 
 	// mask
-	float maskx = 1.0 - pow(monitorcoord.x, 200.0);
-	float masky = 1.0 - pow(-monitorcoord.y, 200.0);
+	float maskx = 1.0 - pow(abs(monitorcoord.x), 200.0);
+	float masky = 1.0 - pow(abs(-monitorcoord.y), 200.0);
 	float mask = clamp(maskx * masky, 0.0, 1.0);
 
 	// sharp texcoord