sphere dots shader

gistfile1.txt

#version 120
#define PI (3.1415926536)
#define TWO_PI (6.2831853072)

uniform sampler2DRect bumpmap;
uniform float elapsedTime;
varying vec2  TexCoord;
varying vec3 normal;
varying vec3 pos;

void main(void) {
    vec4 color = texture2DRect(bumpmap, TexCoord);
    float t = mod(elapsedTime/160, 80.)+5.;
    float d = mod(dot(pos, normal)*1., t) / t;
    float a = sin(d * TWO_PI) * 0.5+0.5;
    
    if (a > 0.5){
        gl_FragColor = vec4(color.xyz, 1);
    }
    else{
//        d = mod(pos.y*1.0, t) / t;
//        a = sin(d * TWO_PI) * 0.5 + 0.5;
//        if (a > 0.5){
//            gl_FragColor = vec4(color.xyz, 1);
//        }
//        else{
//            d = mod(pos.z*1.0, t) / t;
//            a = sin(d * TWO_PI) * 0.5 + 0.5;
//            if (a > 0.5){
//                gl_FragColor = vec4(color.xyz, 1);
//            }
//            else{
                gl_FragColor = vec4(0,0,0, 1);
            }
//        }
//    }
    
}
#version 120

uniform sampler2DRect bumpmap;
varying vec2  TexCoord;
varying vec3 normal;
varying vec3 pos;
void main(void) {
    // get the texture coordinates
    TexCoord = gl_MultiTexCoord0.xy;
    normal = gl_Normal;
    // get the position of the vertex relative to the modelViewProjectionMatrix
    vec4 position = gl_ModelViewProjectionMatrix * gl_Vertex;
    vec4 modifiedPosition = position;
    pos = gl_Vertex.xyz;
    // we need to scale up the values we get from the texture
    
    
    // here we get the red channel value from the texture
    // to use it as vertical displacement
    vec4 c = texture2DRect(bumpmap, TexCoord);
    float df = (c.x + c.y + c.z);
    float scale  = 125;//*sin(df);
    
    modifiedPosition.xyz+=normal*df*scale;
    //modifiedPosition.z+=normal.z*df*scale;

    
    // this is the resulting vertex position
    gl_Position = modifiedPosition;
}