diff --git a/math.d b/math.d
index f626cf2..a17f4e8 100644
--- a/math.d
+++ b/math.d
@@ -806,6 +806,22 @@ Perspective(f32 fov, f32 aspect, f32 near, f32 far)
 	return res;
 }
 
+void
+Ortho(Mat4* mat, f32 left, f32 bottom, f32 right, f32 top, f32 near, f32 far)
+{
+	MatZero(mat);
+	glm_ortho(left, right, bottom, top, near, far, mat.glm_mat.ptr);
+}
+
+Mat4
+Ortho(f32 left, f32 bottom, f32 right, f32 top, f32 near, f32 far)
+{
+	Mat4 mat;
+	MatZero(&mat);
+	glm_ortho(left, right, bottom, top, near, far, mat.glm_mat.ptr);
+	return mat;
+}
+
 pragma(inline): Vec3
 Rotate(Quat q, Vec3 vec)
 {