eo/shaders/vs_basic.sc

$input a_position, a_texcoord0
$output v_texcoord0

uniform vec4 u_position;
uniform vec4 u_rotation;
uniform vec4 u_scale;

#include <bgfx_shader.sh>

void main() {
  vec4 scale = mul(u_scale, vec4(a_position, 1.0f));
  vec4 view = mul(u_view, scale);
  vec4 pos = view + u_position;

  gl_Position = mul(u_proj, pos);
  v_texcoord0 = a_texcoord0; 
}