#version 430 core

layout(location = 0) in vec3 vertexPosition;
layout(location = 1) in vec3 vertexNormal;
layout(location = 2) in vec2 vertexTexCoord;
layout(location = 3) in vec3 vertexTangent;
layout(location = 4) in vec3 vertexBitangent;

uniform mat4 transformation;
uniform mat4 modelMatrix;
uniform sampler2D colorTexture;
uniform float height;

out vec3 vecNormal;
out vec3 worldPos;
out vec2 vecTex;

void main()
{
	worldPos = (modelMatrix* vec4(vertexPosition,1)).xyz;
	vecNormal = (modelMatrix* vec4(vertexNormal,0)).xyz;
	vecTex = vertexTexCoord;
	vecTex.y = 1.0 - vecTex.y;
	vec4 filters = texture2D(colorTexture, vecTex);
	float offsetr = filters.r;
	float offsetg = filters.g;
	float offsetb = filters.b;
	float offset = (offsetr+offsetg+offsetb)/20*height;
	vec3 inc = vec3(offset, offset, offset);
	vec3 inc2 = inc * vertexNormal;
	gl_Position = transformation * vec4(vertexPosition + inc2, 1.0);
}