message: oops.. fix a typo
diff: @@ -18,7 +18,7 @@ out vec2 v_Uv;
  void main() {
  v_Uv = a_Uv * a_Src.zw + a_Src.xy;
  - mat4 instance_transform = mat4(a_TCol1, a_TCol2, a_TCol1, a_TCol4);
  + mat4 instance_transform = mat4(a_TCol1, a_TCol2, a_TCol3, a_TCol4);
  vec4 position = instance_transform * vec4(a_Pos, 0.0, 1.0);
  gl_Position = u_MVP * position;
  