source/blender/draw/modes/shaders/paint_vert_frag.glsl


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flat in vec4 finalColor;
out vec4 fragColor;

#define VERTEX_SELECTED (1 << 0)
#define VERTEX_HIDE     (1 << 4)

void main()
{
	vec2 centered = gl_PointCoord - vec2(0.5);
	float dist_squared = dot(centered, centered);
	const float rad_squared = 0.25;
	const vec4 colSel = vec4(1.0, 1.0, 1.0, 1.0);
	const vec4 colUnsel = vec4(0.0, 0.0, 0.0, 1.0);

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

	fragColor = finalColor;
}