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Bump version to 0.5.0.
[mandelwow.git]
/
mandelwow.frag
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#version 140
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precision highp float;
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in vec2 c;
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in vec2 z;
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out vec4 f_color;
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void main() {
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float zx = z.x;
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float zy = z.y;
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int maxiter = 64;
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int iter = maxiter;
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while (iter > 0) {
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float zx2 = zx * zx;
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float zy2 = zy * zy;
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if (zx2 * zy2 > 4.0) {
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float index = float(iter) / float(maxiter);
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f_color = vec4(index, 0.1, 0.5 - index / 2, 0.8 - index);
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return;
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}
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zy = zx * zy * 2.0 + c.y;
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zx = zx2 - zy2 + c.x;
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iter -= 1;
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}
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f_color = vec4((sin(z.y) + 1.0) / 2,
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(sin(c.y) + 1.0) / 2,
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(sin(c.x) + 1.0) / 2,
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1.0);
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}