#include "vertex_standard.glsl"

uniform mat4 uPv;
uniform mat4x3 uMdl;
uniform vec4 uDepthBounds;

out vec4 aUv;
out vec3 aCo;
out float aDepth;

void main()
{
   vec3 world_pos = uMdl * vec4( a_co, 1.0 );
   gl_Position = uPv * vec4(world_pos,1.0);

   vec2 depth_coords = (world_pos.xz-uDepthBounds.xy)*uDepthBounds.zw;
   aUv = vec4(world_pos.xz*0.01,depth_coords);
   aCo = world_pos;

   aDepth = gl_Position.z;
}