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30 lines
601 B
30 lines
601 B
#version 330 core
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out vec4 pixColor;
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uniform int iterationCount;
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in vec2 complexPos;
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vec2 mul(in vec2 a, in vec2 b) {
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return vec2(a.x * b.x - a.y * b.y, a.y * b.x + a.x * b.y);
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}
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vec3 getColor(in float value){
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vec3 red = vec3(0.5, 0, 0);
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vec3 blue = vec3(0, 0, 0.5);
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return value * red + (1 - value) * blue;
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}
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void main(){
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vec2 z;
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float stepsNeeded = 0;
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while (stepsNeeded < iterationCount && length(z) < 2){
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z = mul(z, z) + complexPos;
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++stepsNeeded;
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}
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float value = stepsNeeded / iterationCount;
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pixColor = vec4(getColor(value), 1);
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}
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