#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 vec3 lightPos;
uniform vec3 cameraPos;

out vec3 vecNormal;
out vec3 worldPos;
out vec2 vecTex;
out vec3 viewDir;   // Dodane deklaracje
out vec3 lightDir;  // Dodane deklaracje
out vec3 viewDirTS;      // Dodane deklaracje
out vec3 lightDirTS; 
mat3 TBN;

void main()
{
	vec3 normal = normalize(mat3(modelMatrix) * vertexNormal);
	vec3 tangent = (modelMatrix * vec4(vertexTangent, 0.0)).xyz;
	vec3 bitangent = (modelMatrix * vec4(vertexBitangent, 0.0)).xyz;
	TBN =  transpose(mat3(tangent, bitangent, normal));

    vec3 viewDir = normalize(cameraPos - (modelMatrix * vec4(vertexPosition, 1)).xyz);
    vec3 lightDir = normalize(lightPos - (modelMatrix * vec4(vertexPosition, 1)).xyz);

	viewDirTS = TBN * viewDir;
    lightDirTS = TBN * lightDir;

	//worldPos = (modelMatrix* vec4(vertexPosition,1)).xyz;
	//vecNormal = (modelMatrix* vec4(vertexNormal,0)).xyz;

	vecTex = vertexTexCoord;
	vecTex.y = 1.0 - vecTex.y;
	gl_Position = transformation * vec4(vertexPosition, 1.0);


}