//---------------------------------------------------------------------------

//

//  File: Plasma.frag

//

//  Abstract: GLSL Plasma fragment shader

//           

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//---------------------------------------------------------------------------

uniform sampler1D palette;

uniform sampler2D pattern;

uniform float offset;

varying float LightIntensity;

void main()

{

    vec4 color;

    color = texture2D(pattern, gl_TexCoord[0].st);

    color = texture1D(palette, (color.r+offset));

    color.a = 1.0;

    color = color * LightIntensity;

    color = clamp(color, 0.0, 1.0);

    gl_FragColor = color;

}