varying highp vec2 UV;
varying highp vec3 position_wrld;
varying highp vec3 normal_cmr;
varying highp vec3 eyeDirection_cmr;
varying highp vec3 lightDirection_cmr;
uniform highp vec3 lightPosition_wrld;
uniform highp vec3 color_mdl;
void main() {
        highp vec3 lightColor = vec3(1.0, 1.0, 1.0);
        highp float lightPower = 10.0;
        highp vec3 materialAmbientColor = vec3(0.5, 0.5, 0.5) * color_mdl;
        //highp vec3 materialDiffuseColor = vec3(0.1, 0.1, 0.1) * color_mdl;
        highp vec3 materialSpecularColor = vec3(0.3, 0.3, 0.3) * color_mdl;
	highp float distance = length(lightPosition_wrld - position_wrld);
	highp vec3 n = normalize(normal_cmr);
	highp vec3 l = normalize(lightDirection_cmr);
        highp float cosTheta = dot(n, l);
        if (cosTheta < 0.0) { cosTheta = 0.0; }
        if (cosTheta > 1.0) { cosTheta = 1.0; }
        highp vec3 E = normalize(eyeDirection_cmr);
	highp vec3 R = reflect(-l, n);
        highp float cosAlpha = dot(E, R);
        if (cosAlpha < 0.0) { cosAlpha = 0.0; }
        if (cosAlpha > 1.0) { cosAlpha = 1.0; }
        gl_FragColor.rgb =
		materialAmbientColor +
                //materialDiffuseColor * lightColor * lightPower * cosTheta / (distance * distance) +
                materialSpecularColor * lightColor * lightPower * (cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha) / (distance * distance);
    gl_FragColor.a = 1.0;
}