#version 300 es
layout(location = 0) in vec3 aPos;
layout(location = 2) in vec4 aInstRot;
layout(location = 3) in vec3 aInstPos;
layout(location = 4) in vec3 aInstScale;
#include "_graphics_uniforms.glsl"
uniform int u_cascade;
vec3 quatRotate(vec4 q, vec3 v) {
    return v + 2.0 * cross(q.xyz, cross(q.xyz, v) + q.w * v);
}
void main() {
    vec3 world = quatRotate(aInstRot, aPos * aInstScale) + aInstPos;
    gl_Position = u_lightVP[u_cascade] * vec4(world, 1.0);
}