uniform mat4 g_WorldViewProjectionMatrix;
uniform mat4 g_WorldViewMatrix;
attribute vec3 inPosition;
attribute vec3 inNormal;

//out
varying vec2 texCoord1;

vec2 getTexCoord(vec3 normal, vec3 position){
    vec2 tileUV = vec2(dot(normal.zxy, position),
                   dot(normal.yzx, position));
    vec2 tileOffset = vec2(0,0);
    return tileOffset + (1.0/16.0) * fract(tileUV);
}
void main() {
    // Vertex transformation
    vec4 local = g_WorldViewProjectionMatrix * vec4(inPosition,1.0);
    gl_Position = local;

    texCoord1 = getTexCoord(inNormal,local.xyz);
}