#version 130

out vec3 src_normal, normal;//, et;
out vec4 pos, col;
out float fogCoord, fs_gid;

uniform bool acc_fog;
uniform vec2 dt;
uniform vec3 eye;

void main(void) {
	normal = (gl_NormalMatrix * gl_Normal);

	pos.xyz = vec3(gl_ModelViewMatrix * gl_Vertex);
	col = gl_Color;
	if (acc_fog) {
		fogCoord = (gl_Fog.end - length(pos.xyz) * 0.85) / (gl_Fog.end - gl_Fog.start);
		fogCoord = 1. - clamp(fogCoord, 0., 1.);
	}
	gl_TexCoord[0] = gl_MultiTexCoord0;
	gl_TexCoord[1] = gl_MultiTexCoord1;
	gl_Position = ftransform();
	src_normal = normalize(/*gl_NormalMatrix * */vec3(pos.xy * dt * 2., 0));
	//pos = gl_Position;

	//vec3 v = normalize(-pos.xyz);         // vector to the eye

	/*vec3 t = gl_NormalMatrix * vec3(1., 0., 0.);
	vec3 b = gl_NormalMatrix * vec3(0., 1., 0.);
	et = vec3(dot(v, t), dot(v, b), dot(v, normal));*/

	//vec3 t = normalize(gl_NormalMatrix * vec3(gl_MultiTexCoord0.yx, 1));
	//vec3 b = cross(normal, t);

	/*mat3 tbnMatrix = mat3(t.x, b.x, normal.x,
						t.y, b.y, normal.y,
						t.z, b.z, normal.z);
	et = tbnMatrix * v;*/


	pos.w = gl_Position.w;
}