#version 330 core
// Dynamic ribbon trail vertex shader. Timestamp is used by the fragment shader
// to fade recent path segments from red toward brown as they age.
layout (location = 0) in vec3 aPos;
layout (location = 1) in float aTimestamp;

out float TrailTimestamp;

uniform mat4 model;
uniform mat4 view;
uniform mat4 projection;

void main()
{
    TrailTimestamp = aTimestamp;

    gl_Position = projection * view * model * vec4(aPos, 1.0);
}