#version 330 core

#ifdef NORMAL_MAP
out mat3 tangentSpace;
#else
out vec3 varNormal;
#endif

out vec2 varTexCoord;

// Matrices
uniform mat4 modelViewMatrix;
uniform mat4 MVP;
uniform mat4 viewMatrix;
uniform mat3 normalMatrix;

layout(location = 0)in vec3 inPosition;
layout(location = 1)in vec2 inTexCoord;
layout(location = 2)in vec3 inNormal;
#ifdef NORMAL_MAP
layout(location = 3)in vec3 inTangent;
layout(location = 4)in vec3 inBinormal;
#endif

void main(void)
{
#ifdef NORMAL_MAP
	tangentSpace = mat3(normalize(normalMatrix*inNormal),
						normalize(normalMatrix*inTangent),
						normalize(normalMatrix*inBinormal));
#else
	varNormal = normalize(normalMatrix*inNormal);
#endif

	varTexCoord = inTexCoord.xy;

	gl_Position = MVP * vec4(inPosition, 1.0);
}