attribute vec3 aVertexPosition;
	attribute vec3 aNormal;
	attribute vec2 aTextureCoord;

	uniform mat4 uMVMatrix;
	uniform mat4 uPMatrix;
	uniform mat4 uOMatrix;
	
	varying vec2 vTextureCoord;
	varying vec3 vNormal;
	varying vec4 vPosition;

#if hasEnvSphereMap
#if hasNormalMap
	varying vec3 u;
#else
	varying vec2 vEnvTextureCoord;
#endif
#endif

#if lightDirectional
	uniform vec3 lDir;
	varying vec3 lightDir;
#endif

#if lightPoint
	uniform vec3 lPos;
	varying vec3 lightPos;
#endif

varying vec3 camPos;

	
#if hasBumpMap
	varying vec3 eyeVec; 
#endif

void main(void) 
{
	mat4 uMVOMatrix = uMVMatrix * uOMatrix;
	mat4 uMVPMatrix = uPMatrix * uMVMatrix;
	
	
	vPosition = uMVOMatrix * vec4(aVertexPosition, 1.0);

	camPos.xyz = -(uMVMatrix * vec4(0.0,0.0,0.0,1.0)).xyz;//-vPosition.xyz;
	
	gl_Position = uPMatrix * vPosition;
	
	vTextureCoord = aTextureCoord;

	vNormal = normalize((uMVOMatrix * vec4(aNormal,0.0)).xyz); 

#if lightDirectional
	lightDir = normalize((uMVMatrix * vec4(lDir,0.0)).xyz);
#endif

#if lightPoint
	lightPos = (uMVMatrix * vec4(lPos,1.0)).xyz;
#endif

#if hasEnvSphereMap
#if hasNormalMap
 	u = normalize( vPosition ).xyz;
 #else
	vec3 u = normalize( vec3(uMVMatrix * vec4(vPosition.xyz,1.0)) );
	vec3 r = reflect( vPosition.xyz - camPos, v_n );
	float m = 2.0 * sqrt( r.x*r.x + r.y*r.y + (r.z+1.0)*(r.z+1.0) );
	vEnvTextureCoord.s = r.x/m + 0.5;
	vEnvTextureCoord.t = r.y/m + 0.5;
#endif
#endif


#if hasBumpMap
	vec3 tangent;
	vec3 binormal;

	vec3 c1 = cross( aNormal, vec3(0.0, 0.0, 1.0) );
	vec3 c2 = cross( aNormal, vec3(0.0, 1.0, 0.0) );

	if( length(c1)>length(c2) )
	{
		tangent = c1;
	}
	else
	{
		tangent = c2;
	}

	tangent = normalize(tangent);

	binormal = cross(aNormal, tangent);
	binormal = normalize(binormal);

	mat3 TBNMatrix = mat3( (vec3 (uMVOMatrix * vec4 (tangent, 0.0))), (vec3 (uMVOMatrix * vec4 (binormal, 0.0))), (vec3 (uMVOMatrix * vec4 (aNormal, 0.0))));
	eyeVec = vec3(uMVOMatrix * vec4(aVertexPosition,1.0)) * TBNMatrix;
#endif
}