varying highp vec3 position_wrld;
varying highp vec3 normal_cmr;
varying highp vec3 eyeDirection_cmr;
varying highp vec3 lightDirection_cmr;
varying highp vec2 coords_mdl;
uniform highp vec3 lightPosition_wrld;
uniform highp vec3 color_mdl;
uniform highp float lightStrength;
uniform highp float ambientStrength;
void main() {
        highp vec3 materialDiffuseColor = vec3(coords_mdl.y * color_mdl.x, coords_mdl.y * color_mdl.y, coords_mdl.y * color_mdl.z);
        highp vec3 materialAmbientColor = vec3(ambientStrength, ambientStrength, ambientStrength) * materialDiffuseColor;
        highp vec3 materialSpecularColor = vec3(1.0, 1.0, 1.0);
        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 = //color_mdl + color_mdl * vec3(cosTheta * cosTheta) / (distance * distance) + vec3(cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha) / (distance * distance);
                materialAmbientColor +
                materialDiffuseColor * lightStrength * (cosTheta * cosTheta) / (distance * distance) +
                materialSpecularColor * lightStrength * (cosAlpha * cosAlpha * cosAlpha * cosAlpha * cosAlpha) / (distance * distance);
}