Interactive Mandelbrot viewer with Qt and OpenGL.
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#version 330 core
layout (location = 0) in vec2 pos;
uniform vec2 origin;
uniform vec2 size;
out vec2 complexPos;
void main(){
vec2 offset = (pos + 1) / 2 * size;
offset.y *= -1;
complexPos = origin + offset;
gl_Position = vec4(pos.xy, 0.0, 1.);
}