Normal Map Vertex Shader

normalmap.vert

#version 400
layout (location = 0) in vec3 attribPosition;
layout (location = 1) in vec3 attribNormal;
layout (location = 2) in vec2 attribTexCoord;
layout (location = 3) in vec3 attribTangent;
layout (location = 3) in vec3 attribBinormal;

uniform mat4 mvp;
uniform mat4 mvm;
uniform mat3 nm;
uniform vec3 lightPos_World;

out vec2 vUvs;
out vec3 lightPos_Eye;
out vec3 vertexPos_Eye;
out vec3 normalDir_Eye;
out vec3 normalDir_World;
out mat3 tbnMatrix;

void main()
{
	vUvs = attribTexCoord;
	normalDir_World = attribNormal;
	normalDir_Eye = (nm * attribNormal);
	vec3 t = nm * attribTangent;
	vec3 n = nm * attribNormal;
	vec3 b = nm * cross(n,t);

	mat3 tbnMatrix = mat3(t.x, b.x, n.x,
                          t.y, b.y, n.y,
                          t.z, b.z, n.z);

	vertexPos_Eye = (mvm * vec4(attribPosition,1.0)).xyz;
	lightPos_Eye = (mvm * vec4(lightPos_World,1.0)).xyz;

	gl_Position = mvp * vec4(attribPosition,1.0);
	
}