NewFShader.fragmentshader

#version 330 core
in vec2 UV;
in vec3 Eye_Direction;
in vec3 LightDirection_eyespace;
in vec3 Eye_Direction_tangentspace;
in vec3 LightDirection_tangentspace;
in vec3 interpolatedColor;
in vec4 world_position;
in vec3 Normal_eyespace;
in vec3 Tangent_eyespace;
in vec3 Tangent_modelspace;


uniform vec4 LightLocation_world_space;

uniform sampler2D textureMap_diffuse;
uniform sampler2D textureMap_specular;
uniform sampler2D textureMap_normal;

uniform mat4 VP;
uniform mat4 M;
uniform mat4 V;

// Ouput data
out vec3 color;



void main()
{
    vec3 E = normalize(Eye_Direction_tangentspace);
    vec2 texOffset = UV;
    vec4 bumpPoint = texture2D(textureMap_specular,texOffset);
    float height = 1.0;

    float step = height/60;
    vec2 delta = vec2(E.x, E.y)*0.045/ (-E.z * 60);

    while(bumpPoint.r < height)
    {
        height-=step;
        texOffset += delta;
        bumpPoint = texture2D(textureMap_specular,texOffset);
    }




    vec4 texColorD=texture2D(textureMap_diffuse,texOffset);
    vec4 texColorS=texture2D(textureMap_specular,texOffset);
    vec4 texColorN=texture2D(textureMap_normal,texOffset);
    vec3 LightColor = vec3(0.6,0.6,0.6);
	float LightPower = 30.0f;

    vec3 MaterialDiffuseColor = texColorD.rgb;
	vec3 MaterialAmbientColor = vec3(0,0,0.1) * MaterialDiffuseColor;
	vec3 MaterialSpecularColor = texColorS.rgb;

	float distance = length( LightLocation_world_space - world_position );

    vec3 n = normalize( texColorN.rgb*2.0-1.0) ;
    //vec3 n = normalize( Normal_eyespace) ;

	vec3 l = normalize( LightDirection_tangentspace );

	float cosTheta = clamp( dot( n,l ), 0,1 );






    vec3 R = normalize(reflect(-l,n));
    float cosAlpha = clamp( dot( E,R ), 0,1 );





    color = MaterialAmbientColor +
            MaterialDiffuseColor * LightColor * LightPower * cosTheta / (distance*distance) +
			MaterialSpecularColor * LightColor * LightPower * texColorS.rgb * pow(cosAlpha,5) / (distance*distance);

   //color= vec3(texOffset.x,texOffset.y,1.0);




}