#version 330

// Input vertex attributes
in vec3 vertexPosition;
in vec2 vertexTexCoord;
in vec3 vertexNormal;
in vec4 vertexColor;

// Input uniform values
uniform mat4 mvp;
uniform mat4 matModel;

// Output vertex attributes (to fragment shader)
out vec3 fragPosition;
out vec2 fragTexCoord;
out vec4 fragColor;
out vec3 fragNormal;

void main()
{
        // Calculate fragment position in world space
        fragPosition = vec3(matModel * vec4(vertexPosition, 1.0));
        fragTexCoord = vertexTexCoord;
        fragColor = vertexColor;
        fragNormal = normalize(vec3(matModel * vec4(vertexNormal, 0.0)));
        // 1. Get the base color of the object
        // Calculate final vertex position
        gl_Position = mvp * vec4(vertexPosition, 1.0);
}