uniform sampler2D tex;
uniform float smoothness;
uniform float height;
uniform vec2 pix_sz;

varying vec2 local_pt;

void main()
{
	const vec3 color = vec3(0.2, 0.4, 1.0);

	vec2 uv = gl_TexCoord[0].st;
	float dist = texture2D(tex, uv).a;

	float glyph = smoothstep(0.5 - smoothness, 0.5 + smoothness, dist);

	gl_FragColor.rgb = color * ((dist - 0.5 - smoothness) * 45.0);
	gl_FragColor.a = glyph;
}