From a7fc2311a10a032cab0c8d290f5f878d6f40d98f Mon Sep 17 00:00:00 2001
From: langolierz <langolierz@gmail.com>
Date: Sun, 8 Jul 2018 15:58:45 +1200
Subject: [PATCH] Create example_shader.shader

---
 dotfiles/example_shader.shader | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 dotfiles/example_shader.shader

diff --git a/dotfiles/example_shader.shader b/dotfiles/example_shader.shader
new file mode 100644
index 0000000..3334020
--- /dev/null
+++ b/dotfiles/example_shader.shader
@@ -0,0 +1,23 @@
+// copied from http://glslsandbox.com/e#47821.0
+#ifdef GL_ES
+precision mediump float;
+#endif
+
+#extension GL_OES_standard_derivatives : enable
+
+uniform float u_time;
+uniform vec2 u_mouse;
+uniform vec2 u_resolution;
+
+void main( void ) {
+
+	vec2 position = ( gl_FragCoord.xy / u_resolution.xy ) + u_mouse / 4.0;
+
+	float color = 0.0;
+	color += sin( position.x * cos( u_time / 15.0 ) * 80.0 ) + cos( position.y * cos( u_time / 15.0 ) * 10.0 );
+	color += sin( position.y * sin( u_time / 10.0 ) * 40.0 ) + cos( position.x * sin( u_time / 25.0 ) * 40.0 );
+	color += sin( position.x * sin( u_time / 5.0 ) * 10.0 ) + sin( position.y * sin( u_time / 35.0 ) * 80.0 );
+	color *= sin( u_time / 10.0 ) * 0.8;
+
+	gl_FragColor = vec4( vec3( color, color * 0.5, sin( color + u_time / 3.0 ) * 0.75 ), 1.0 );
+}