<?xml version="1.0" encoding="UTF-8"?>
<!--
Scanline Shader
edited by Commodus

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.


-->
<shader language="GLSL">
<vertex><![CDATA[
void main(void) {
gl_Position = ftransform();
gl_TexCoord[0] = gl_MultiTexCoord0;
}
]]></vertex>

<fragment><![CDATA[
uniform sampler2D rubyTexture;

void main(void) {
vec4 rgb = texture2D(rubyTexture, gl_TexCoord[0].xy);
vec4 intens ;
if (fract(gl_FragCoord.y * (0.5*4.0/4.0)) > 0.5)
intens = vec4(0);
else
intens = smoothstep(0.2,0.8,rgb) + normalize(vec4(rgb.xyz, 1.0));
float level = (4.0-gl_TexCoord[0].z) * 0.19;
gl_FragColor = intens * (0.6-level) + rgb * 1.1 ;
}
]]></fragment>
</shader>