diff --git a/include/cglm/struct/cam.h b/include/cglm/struct/cam.h
index d3c35b0..2a92af7 100644
--- a/include/cglm/struct/cam.h
+++ b/include/cglm/struct/cam.h
@@ -322,20 +322,24 @@ glms_perspective_default(float aspect) {
  *        this makes very easy to resize proj matrix when window /viewport
  *        reized
  *
+ * NOTE: if you dodn't want to create new matrix then use array api on struct.raw
+ *       like glms_perspective_resize(proj.raw, aspect) to avoid create new mat4
+ *       each time
+ *
  * @param[in, out] proj   perspective projection matrix
  * @param[in]      aspect aspect ratio ( width / height )
  */
 CGLM_INLINE
-void
+mat4s
 glms_perspective_resize(mat4s proj, float aspect) {
 #if CGLM_CONFIG_CLIP_CONTROL == CGLM_CLIP_CONTROL_LH_ZO
-  glms_perspective_resize_lh_zo(proj, aspect);
+  return glms_perspective_resize_lh_zo(proj, aspect);
 #elif CGLM_CONFIG_CLIP_CONTROL == CGLM_CLIP_CONTROL_LH_NO
-  glms_perspective_resize_lh_no(proj, aspect);
+  return glms_perspective_resize_lh_no(proj, aspect);
 #elif CGLM_CONFIG_CLIP_CONTROL == CGLM_CLIP_CONTROL_RH_ZO
-  glms_perspective_resize_rh_zo(proj, aspect);
+  return glms_perspective_resize_rh_zo(proj, aspect);
 #elif CGLM_CONFIG_CLIP_CONTROL == CGLM_CLIP_CONTROL_RH_NO
-  glms_perspective_resize_rh_no(proj, aspect);
+  return glms_perspective_resize_rh_no(proj, aspect);
 #endif
 }
 
diff --git a/include/cglm/struct/clipspace/persp_lh_no.h b/include/cglm/struct/clipspace/persp_lh_no.h
index 42d325d..1c1bb68 100644
--- a/include/cglm/struct/clipspace/persp_lh_no.h
+++ b/include/cglm/struct/clipspace/persp_lh_no.h
@@ -127,13 +127,20 @@ glms_perspective_default_lh_no(float aspect) {
  *        reized with a left-hand coordinate system and a
  *        clip-space of [-1, 1].
  *
+ * NOTE: if you dodn't want to create new matrix then use array api on struct.raw
+ *       like glm_perspective_resize_lh_no(proj.raw, aspect) to avoid create new mat4
+ *       each time
+ *       
  * @param[in, out] proj   perspective projection matrix
  * @param[in]      aspect aspect ratio ( width / height )
  */
 CGLM_INLINE
-void
+mat4s
 glms_perspective_resize_lh_no(mat4s proj, float aspect) {
-  glm_perspective_resize_lh_no(aspect, proj.raw);
+  mat4s dest;
+  dest = proj;
+  glm_perspective_resize_lh_no(aspect, dest.raw);
+  return dest;
 }
 
 /*!
diff --git a/include/cglm/struct/clipspace/persp_lh_zo.h b/include/cglm/struct/clipspace/persp_lh_zo.h
index 488a1e4..230301f 100644
--- a/include/cglm/struct/clipspace/persp_lh_zo.h
+++ b/include/cglm/struct/clipspace/persp_lh_zo.h
@@ -127,13 +127,20 @@ glms_perspective_default_lh_zo(float aspect) {
  *        reized with a left-hand coordinate system and a
  *        clip-space of [0, 1].
  *
+ * NOTE: if you dodn't want to create new matrix then use array api on struct.raw
+ *       like glms_perspective_resize_lh_zo(proj.raw, aspect) to avoid create new mat4
+ *       each time
+ *       
  * @param[in, out] proj   perspective projection matrix
  * @param[in]      aspect aspect ratio ( width / height )
  */
 CGLM_INLINE
-void
+mat4s
 glms_perspective_resize_lh_zo(mat4s proj, float aspect) {
-  glm_perspective_resize_lh_zo(aspect, proj.raw);
+  mat4s dest;
+  dest = proj;
+  glm_perspective_resize_lh_zo(aspect, dest.raw);
+  return dest;
 }
 
 /*!
diff --git a/include/cglm/struct/clipspace/persp_rh_no.h b/include/cglm/struct/clipspace/persp_rh_no.h
index 942b677..7170e9a 100644
--- a/include/cglm/struct/clipspace/persp_rh_no.h
+++ b/include/cglm/struct/clipspace/persp_rh_no.h
@@ -127,13 +127,20 @@ glms_perspective_default_rh_no(float aspect) {
  *        reized with a right-hand coordinate system and a
  *        clip-space of [-1, 1].
  *
+ * NOTE: if you dodn't want to create new matrix then use array api on struct.raw
+ *       like glm_perspective_resize_rh_no(proj.raw, aspect) to avoid create new mat4
+ *       each time
+ *       
  * @param[in, out] proj   perspective projection matrix
  * @param[in]      aspect aspect ratio ( width / height )
  */
 CGLM_INLINE
-void
+mat4s
 glms_perspective_resize_rh_no(mat4s proj, float aspect) {
-  glm_perspective_resize_rh_no(aspect, proj.raw);
+  mat4s dest;
+  dest = proj;
+  glm_perspective_resize_rh_no(aspect, dest.raw);
+  return dest;
 }
 
 /*!
diff --git a/include/cglm/struct/clipspace/persp_rh_zo.h b/include/cglm/struct/clipspace/persp_rh_zo.h
index a00d9d7..ff4d8de 100644
--- a/include/cglm/struct/clipspace/persp_rh_zo.h
+++ b/include/cglm/struct/clipspace/persp_rh_zo.h
@@ -127,13 +127,20 @@ glms_perspective_default_rh_zo(float aspect) {
  *        reized with a right-hand coordinate system and a
  *        clip-space of [0, 1].
  *
+ * NOTE: if you dodn't want to create new matrix then use array api on struct.raw
+ *       like glm_perspective_resize_rh_zo(proj.raw, aspect) to avoid create new mat4
+ *       each time
+ *       
  * @param[in, out] proj   perspective projection matrix
  * @param[in]      aspect aspect ratio ( width / height )
  */
 CGLM_INLINE
-void
+mat4s
 glms_perspective_resize_rh_zo(mat4s proj, float aspect) {
-  glm_perspective_resize_rh_zo(aspect, proj.raw);
+  mat4s dest;
+  dest = proj;
+  glm_perspective_resize_rh_zo(aspect, dest.raw);
+  return dest;
 }
 
 /*!