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//
// Fragment shader for drawing procedural stripes
//
// Author: OGLSL implementation by Ian Nurse
//
// Copyright (C) 2002-2004 LightWork Design Ltd.
// www.lightworkdesign.com
//
// See LightworkDesign-License.txt for license information
//
uniform vec3 StripeColor;
uniform vec3 BackColor;
uniform float Width;
uniform float Fuzz;
uniform float Scale;
varying vec3 DiffuseColor;
varying vec3 SpecularColor;
void main(void)
{
float scaled_t = fract(gl_TexCoord[0].t * Scale);
float frac1 = clamp(scaled_t / Fuzz, 0.0, 1.0);
float frac2 = clamp((scaled_t - Width) / Fuzz, 0.0, 1.0);
frac1 = frac1 * (1.0 - frac2);
frac1 = frac1 * frac1 * (3.0 - (2.0 * frac1));
vec3 finalColor = mix(BackColor, StripeColor, frac1);
finalColor = finalColor * DiffuseColor + SpecularColor;
gl_FragColor = vec4 (finalColor, 1.0);
}
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