#version 120
const int nLightCount = 2;
attribute vec4 in_vertex;
attribute vec3 in_normal;
attribute vec4 in_color;
attribute vec2 in_uv;
attribute vec4 in_uv2;
uniform vec4 wsRot;

varying float vertMask;
varying vec3 npos;
varying vec3 normal;
varying vec2 uv, uv2;
varying vec3 light[nLightCount];
varying vec4 pos;

vec3 wsAllign(vec3 x){
    return x + 2.0 * cross(wsRot.xyz, cross(wsRot.xyz, x) + wsRot.w * x);
}

vec3 toLinear(vec3 x) {
    return pow(x, vec3(2.2));
}
 
void main()
{
    pos = gl_ModelViewMatrix * in_vertex;
   
    // convert view, normal and light vectors to world space and quaternion correct for model rotation
    mat3 tcamrot = transpose(mat3x3(gl_ModelViewMatrix));
    npos = (wsAllign(normalize(tcamrot * -pos.xyz)));
   
    // special view vector to correct just for cubemap reflections
    normal = (tcamrot * (gl_NormalMatrix * wsAllign(normalize(in_normal))));
    for (int i = 0; i < nLightCount; i++) {
        light[i] = wsAllign(normalize((tcamrot * (((gl_LightSource[i].position)).xyz - pos.xyz))));
    }
   
	vertMask = in_color.r;
	uv = in_uv;
	uv.y = 1.0 - uv.y;
	
	uv2 = in_uv2.xy;
	uv2.y = 1.0 - uv2.y;

	gl_Position = gl_ProjectionMatrix * pos;
}