49 lines
791 B
GLSL
49 lines
791 B
GLSL
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// ----- Vertex Shader -----
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#version 410 core
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layout(location = 0) in vec3 position;
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uniform mat4 projection;
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uniform mat4 model;
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void main(){
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gl_Position = projection * model * vec4(position,1);
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}
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// ----- Fragment Shader -----
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#version 410 core
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uniform vec2 resolution;
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uniform float time;
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out vec3 color;
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#define ACCURACY 1000
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#define LIMIT 1000
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vec2 cmult(vec2 z1,vec2 z2){
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return(vec2(z1.x*z2.x-z1.y*z2.y,z1.x*z2.y+z1.y*z2.x));
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}
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vec2 IsDiverging(vec2 coord){
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vec2 z=vec2(coord.x,coord.y);
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int i;
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for(i=0;i<ACCURACY;i++){
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z=cmult(z,z)+vec2(-0.3,0.5);
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if(length(z) > LIMIT)
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break;
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}
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return(z);
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}
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void main()
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{
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vec2 coord=gl_FragCoord.xy/resolution.xy;
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coord-=0.5;
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coord/=(time/10);
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float d=length(IsDiverging(coord));
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color=vec3(LIMIT/(d*2),0,0);
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}
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