#version 430 core

float AMBIENT = 0.1;

uniform vec3 color;
uniform vec3 lightPos;
uniform sampler2D colorTexture;
uniform sampler2D clouds;

in vec3 vecNormal;
in vec3 worldPos;
in vec2 fragTexCoord;

out vec4 outColor;

void main()
{
	vec4 textureColor = texture2D(colorTexture, fragTexCoord);
	vec4 cloudsColor = texture2D(clouds, fragTexCoord);
	vec3 texcolor = mix(textureColor.rgb, vec3(0.0), cloudsColor.r);

	vec3 lightDir = normalize(lightPos-worldPos);
	vec3 normal = normalize(vecNormal);
	float diffuse=max(0.0, dot(normal,lightDir));

	outColor = vec4(texcolor * min(1, AMBIENT + diffuse), 1.0);
}