attribute vec3 vertexPosition;
attribute vec3 vertexNormal;
attribute vec2 vertexTexCoord;

varying vec3 worldPosition;
varying vec3 worldNormal;
varying vec2 texCoord;

uniform mat4 modelMatrix;
uniform mat3 modelNormalMatrix;
uniform mat4 mvp;

uniform vec2 texCoordScale;
uniform vec2 texCoordBias;

void main()
{
    texCoord = vertexTexCoord * texCoordScale + texCoordBias;
    worldNormal = normalize(modelNormalMatrix * vertexNormal);
    worldPosition = vec3(modelMatrix * vec4(vertexPosition, 1.0));

    gl_Position = mvp * vec4(vertexPosition, 1.0);
}