如何使用OpenGL在2D模式下渲染完美的线框矩形？

return pow(delta_e, (-1.0f * (x - t) * (x - t) / s));

vec2 uv = gl_FragCoord.xy / texture(texture, coordinate).xy;

float x = uv.x;

float y = uv.y;

float t = distance(vec2(x, y), vec2(0.0f, 0.0f)) / lineWidth;

float s = length(vec2(x, y)) / lineWidth;

float e = exp(delta_e * t);

float f = abs(sin(2.0f * PI * t));

float g = abs(cos(2.0f * PI * t));

float h = abs(sin(4.0f * PI * t));

float i = abs(cos(4.0f * PI * t));

float j = abs(sin(6.0f * PI * t));

float k = abs(cos(6.0f * PI * t));

float l = abs(sin(8.0f * PI * t));

float m = abs(cos(8.0f * PI * t));

float n = abs(sin(10.0f * PI * t));

float o = abs(cos(10.0f * PI * t));

float p = abs(sin(12.0f * PI * t));

float q = abs(cos(12.0f * PI * t));

float r = abs(sin(14.0f * PI * t));

float s = abs(cos(14.0f * PI * t));

float t2 = abs(sin(13.0f * PI * t));

float u = abs(cos(13.0f * PI * t));

float v = abs(sin(15.0f * PI * t));

float w = abs(cos(15.0f * PI * t));

float x = abs(sin(16.0f * PI * t));

float y = abs(cos(16.0f * PI * t));

float z = abs(sin(17.0f * PI * t));

float a = abs(cos(17.0f * PI * t));

float b = abs(sin(18.0f * PI * t));

float c = abs(cos(18.0f * PI * t));

float d =