#version 330 core
layout(location=0) in vec3 aPosition;
layout(location=1) in vec3 aNormal;
layout(location=2) in vec3 aDirection;
uniform vec3 uChunkPosition;
uniform vec3 uBodyOrigin;
uniform float uRadius;
uniform mat4 uViewProjection;
uniform mat4 uBodyToWorld;
uniform float uFar;
uniform vec3 uMaterialAnchor;
out vec3 vMaterial;
out vec3 vBody;
out vec3 vDirection;
out vec3 vNormal;
out vec3 vWorld;
out float vFragDepth;
void main() {
    vWorld=uChunkPosition+mat3(uBodyToWorld)*aPosition;
    vMaterial=aPosition+uMaterialAnchor;
    vBody=uBodyOrigin+aPosition/uRadius;
    vDirection=aDirection; vNormal=aNormal;
    vec4 clip=uViewProjection*vec4(vWorld,1);
    vFragDepth=clip.w+1.0;
    gl_Position=clip;
    gl_Position.z=(2.0*log2(max(.0001,vFragDepth))/log2(uFar+1.0)-1.0)*clip.w;
}