attribute vec4 in_position;
attribute vec3 in_normal;
attribute vec2 in_uv;
attribute vec4 in_tangent;

varying vec3 npos;
varying vec3 normal, binormal, tangent;
varying vec2 uv;

void main()
{
	normal = normalize(gl_NormalMatrix * in_normal);
	tangent = normalize(gl_NormalMatrix * in_tangent.xyz);
	binormal = normalize(gl_NormalMatrix * cross(normal, in_tangent.xyz * in_tangent.w));
	
	vec4 pos = gl_ModelViewMatrix * in_position;
	npos = -pos.xyz;
	
	uv = in_uv;
	gl_Position = gl_ProjectionMatrix * pos;
}