source/blender/draw/engines/gpencil/shaders/gpencil_edit_point_frag.glsl


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in vec4 mColor;
in vec2 mTexCoord;
out vec4 fragColor;

void main()
{
  vec2 centered = mTexCoord - vec2(0.5);
  float dist_squared = dot(centered, centered);
  const float rad_squared = 0.25;

  // round point with jaggy edges
  if (dist_squared > rad_squared) {
    discard;
  }

  fragColor = mColor;
}