#version 330 core

uniform vec3 u_campos;

uniform float u_time;

in vec3 v_position;
in vec3 v_normal;
in vec2 v_texcoord;

in vec4 v_projected_normal;

flat in int v_id;

layout (location=0) out vec4 v_output;

uniform sampler2D u_texture;

float get_fog_factor(float d)
{
	const float FogMax = 10.0;
	const float FogMin = 0.0;

	if (d >= FogMax) return 1.0;
	if (d <= FogMin) return 0.0;

	return 1 - (FogMax - d) / (FogMax - FogMin);
}

void main()
{

	//float time = sin((u_time + float(v_id % 1) * 4.0) / 32.0) * 0.4;
	float time = sin((u_time + (v_position.x - v_position.z) * 4.0) / 24.0) * 0.2;

	vec4 tex2 = texture(u_texture, v_texcoord);
	
	v_output = vec4(tex2.xyz + (float(time) / 1000.0), 0.5);
}