dont use I macro defined in standard

docs/source/vec2.rst

@@ -397,16 +397,16 @@ Functions documentation
       | *[in]*  **src**  pointer to an array of floats
       | *[out]* **dest** destination vector
 
-.. c:function:: void glm_vec2_reflect(vec2 I, vec2 N, vec2 dest) 
+.. c:function:: void glm_vec2_reflect(vec2 v, vec2 n, vec2 dest)
 
     Reflection vector using an incident ray and a surface normal
 
     Parameters:
-      | *[in]*  **I**     incident vector
+      | *[in]*  **v**     incident vector
-      | *[in]*  **N**     *❗️ normalized ❗️* normal vector
+      | *[in]*  **n**     *❗️ normalized ❗️* normal vector
       | *[out]* **dest**  destination: reflection result
 
-.. c:function:: bool glm_vec2_refract(vec2 I, vec2 N, float eta, vec2 dest)
+.. c:function:: bool glm_vec2_refract(vec2 v, vec2 n, float eta, vec2 dest)
 
     Computes refraction vector for an incident vector and a surface normal.
    
@@ -415,8 +415,8 @@ Functions documentation
     Otherwise, computes refraction vector, stores it in dest, and returns true.
 
     Parameters:
-      | *[in]*  **I**     *❗️ normalized ❗️* incident vector
+      | *[in]*  **v**     *❗️ normalized ❗️* incident vector
-      | *[in]*  **N**     *❗️ normalized ❗️* normal vector
+      | *[in]*  **n**     *❗️ normalized ❗️* normal vector
       | *[in]*  **eta**   ratio of indices of refraction (incident/transmitted)
       | *[out]* **dest**  refraction vector if refraction occurs; zero vector otherwise
 

docs/source/vec3.rst

@@ -516,26 +516,26 @@ Functions documentation
       | *[in]*  **src**  pointer to an array of floats
       | *[out]* **dest** destination vector
 
-.. c:function:: void glm_vec3_faceforward(vec3 N, vec3 I, vec3 Nref, vec3 dest)
+.. c:function:: void glm_vec3_faceforward(vec3 n, vec3 v, vec3 nref, vec3 dest)
 
     A vector pointing in the same direction as another
 
     Parameters:
-      | *[in]*  **N**     vector to orient
+      | *[in]*  **n**     vector to orient
-      | *[in]*  **I**     incident vector
+      | *[in]*  **v**     incident vector
-      | *[in]*  **Nref**  reference vector
+      | *[in]*  **nref**  reference vector
       | *[out]* **dest**  destination: oriented vector, pointing away from the surface.
 
-.. c:function:: void glm_vec3_reflect(vec3 I, vec3 N, vec3 dest) 
+.. c:function:: void glm_vec3_reflect(vec3 v, vec3 n, vec3 dest)
 
     Reflection vector using an incident ray and a surface normal
 
     Parameters:
-      | *[in]*  **I**     incident vector
+      | *[in]*  **v**     incident vector
-      | *[in]*  **N**     *❗️ normalized ❗️* normal vector
+      | *[in]*  **n**     *❗️ normalized ❗️* normal vector
       | *[out]* **dest**  destination: reflection result
 
-.. c:function:: bool glm_vec3_refract(vec3 I, vec3 N, float eta, vec3 dest)
+.. c:function:: bool glm_vec3_refract(vec3 v, vec3 n, float eta, vec3 dest)
 
     
     Computes refraction vector for an incident vector and a surface normal.
@@ -545,10 +545,10 @@ Functions documentation
     Otherwise, computes refraction vector, stores it in dest, and returns true.
 
     Parameters:
-      | *[in]*  **I**     *❗️ normalized ❗️* incident vector
+      | *[in]*  **v**     *❗️ normalized ❗️* incident vector
-      | *[in]*  **N**     *❗️ normalized ❗️* normal vector
+      | *[in]*  **n**     *❗️ normalized ❗️* normal vector
       | *[in]*  **eta**   ratio of indices of refraction (incident/transmitted)
       | *[out]* **dest**  refraction vector if refraction occurs; zero vector otherwise
 
     Returns:
-      returns true if refraction occurs; false if total internal reflection occurs.
+      returns true if refraction occurs; false if total internal reflection occurs.

docs/source/vec4.rst

@@ -427,16 +427,16 @@ Functions documentation
       | *[in]*  **src**  pointer to an array of floats
       | *[out]* **dest** destination vector
 
-.. c:function:: bool glm_vec4_reflect(vec4 I, vec4 N, vec4 dest) 
+.. c:function:: bool glm_vec4_reflect(vec4 v, vec4 n, vec4 dest)
 
     Reflection vector using an incident ray and a surface normal
 
     Parameters:
-      | *[in]*  **I**     incident vector
+      | *[in]*  **v**     incident vector
-      | *[in]*  **N**     *❗️ normalized ❗️* normal vector
+      | *[in]*  **n**     *❗️ normalized ❗️* normal vector
       | *[out]* **dest**  destination: reflection result
 
-.. c:function:: bool glm_vec4_refract(vec4 I, vec4 N, float eta, vec4 dest)
+.. c:function:: bool glm_vec4_refract(vec4 v, vec4 n, float eta, vec4 dest)
 
     computes refraction vector for an incident vector and a surface normal.
    
@@ -449,10 +449,10 @@ Functions documentation
     the 'w' component should manually adjust 'dest' after calling this function.
 
     Parameters:
-      | *[in]*  **I**     *❗️ normalized ❗️* incident vector
+      | *[in]*  **v**     *❗️ normalized ❗️* incident vector
-      | *[in]*  **N**     *❗️ normalized ❗️* normal vector
+      | *[in]*  **n**     *❗️ normalized ❗️* normal vector
       | *[in]*  **eta**   ratio of indices of refraction (incident/transmitted)
       | *[out]* **dest**  refraction vector if refraction occurs; zero vector otherwise
 
     Returns:
-      returns true if refraction occurs; false if total internal reflection occurs.
+      returns true if refraction occurs; false if total internal reflection occurs.

include/cglm/call/vec2.h

@@ -199,11 +199,11 @@ glmc_vec2_make(const float * __restrict src, vec2 dest);
 
 CGLM_EXPORT
 void
-glmc_vec2_reflect(vec2 I, vec2 N, vec2 dest);
+glmc_vec2_reflect(vec2 v, vec2 n, vec2 dest);
 
 CGLM_EXPORT
 bool
-glmc_vec2_refract(vec2 I, vec2 N, float eta, vec2 dest);
+glmc_vec2_refract(vec2 v, vec2 n, float eta, vec2 dest);
 
 #ifdef __cplusplus
 }

include/cglm/call/vec3.h

@@ -336,15 +336,15 @@ glmc_vec3_make(const float * __restrict src, vec3 dest);
 
 CGLM_EXPORT
 void
-glmc_vec3_faceforward(vec3 N, vec3 I, vec3 Nref, vec3 dest);
+glmc_vec3_faceforward(vec3 n, vec3 v, vec3 nref, vec3 dest);
 
 CGLM_EXPORT
 void
-glmc_vec3_reflect(vec3 I, vec3 N, vec3 dest);
+glmc_vec3_reflect(vec3 v, vec3 n, vec3 dest);
 
 CGLM_EXPORT
 bool
-glmc_vec3_refract(vec3 I, vec3 N, float eta, vec3 dest);
+glmc_vec3_refract(vec3 v, vec3 n, float eta, vec3 dest);
 
 #ifdef __cplusplus
 }

include/cglm/call/vec4.h

@@ -313,11 +313,11 @@ glmc_vec4_make(const float * __restrict src, vec4 dest);
 
 CGLM_EXPORT
 void
-glmc_vec4_reflect(vec4 I, vec4 N, vec4 dest);
+glmc_vec4_reflect(vec4 v, vec4 n, vec4 dest);
 
 CGLM_EXPORT
 bool
-glmc_vec4_refract(vec4 I, vec4 N, float eta, vec4 dest);
+glmc_vec4_refract(vec4 v, vec4 n, float eta, vec4 dest);
 
 #ifdef __cplusplus
 }

include/cglm/struct/vec2.h

@@ -54,8 +54,8 @@
    CGLM_INLINE vec2s glms_vec2_clamp(vec2s v, float minVal, float maxVal)
    CGLM_INLINE vec2s glms_vec2_lerp(vec2s from, vec2s to, float t)
    CGLM_INLINE vec2s glms_vec2_make(float * restrict src)
-   CGLM_INLINE vec2s glms_vec2_reflect(vec2s I, vec2s N)
+   CGLM_INLINE vec2s glms_vec2_reflect(vec2s v, vec2s n)
-   CGLM_INLINE bool  glms_vec2_refract(vec2s I, vec2s N, float eta, vec2s *dest)
+   CGLM_INLINE bool  glms_vec2_refract(vec2s v, vec2s n, float eta, vec2s *dest)
  */
 
 #ifndef cglms_vec2s_h
@@ -702,9 +702,9 @@ glms_vec2_(make)(const float * __restrict src) {
  */
 CGLM_INLINE
 vec2s
-glms_vec2_(reflect)(vec2s I, vec2s N) {
+glms_vec2_(reflect)(vec2s v, vec2s n) {
   vec2s dest;
-  glm_vec2_reflect(I.raw, N.raw, dest.raw);
+  glm_vec2_reflect(v.raw, n.raw, dest.raw);
   return dest;
 }
 
@@ -715,8 +715,8 @@ glms_vec2_(reflect)(vec2s I, vec2s N) {
  * occurs (angle too great given eta), dest is set to zero and returns false.
  * Otherwise, computes refraction vector, stores it in dest, and returns true.
  *
- * @param[in]  I    normalized incident vector
+ * @param[in]  v    normalized incident vector
- * @param[in]  N    normalized normal vector
+ * @param[in]  n    normalized normal vector
  * @param[in]  eta  ratio of indices of refraction (incident/transmitted)
  * @param[out] dest refraction vector if refraction occurs; zero vector otherwise
  *
@@ -724,8 +724,8 @@ glms_vec2_(reflect)(vec2s I, vec2s N) {
  */
 CGLM_INLINE
 bool
-glms_vec2_(refract)(vec2s I, vec2s N, float eta, vec2s * __restrict dest) {
+glms_vec2_(refract)(vec2s v, vec2s n, float eta, vec2s * __restrict dest) {
-  return glm_vec2_refract(I.raw, N.raw, eta, dest->raw);
+  return glm_vec2_refract(v.raw, n.raw, eta, dest->raw);
 }
 
 #endif /* cglms_vec2s_h */

include/cglm/struct/vec3.h

@@ -76,9 +76,9 @@
    CGLM_INLINE vec3s glms_vec3_smoothinterpc(vec3s from, vec3s to, float t);
    CGLM_INLINE vec3s glms_vec3_swizzle(vec3s v, int mask);
    CGLM_INLINE vec3s glms_vec3_make(float * restrict src);
-   CGLM_INLINE vec3s glms_vec3_faceforward(vec3s N, vec3s I, vec3s Nref);
+   CGLM_INLINE vec3s glms_vec3_faceforward(vec3s n, vec3s v, vec3s nref);
-   CGLM_INLINE vec3s glms_vec3_reflect(vec3s I, vec3s N);
+   CGLM_INLINE vec3s glms_vec3_reflect(vec3s v, vec3s n);
-   CGLM_INLINE bool  glms_vec3_refract(vec3s I, vec3s N, float eta, vec3s *dest)
+   CGLM_INLINE bool  glms_vec3_refract(vec3s v, vec3s n, float eta, vec3s *dest)
 
  Convenient:
    CGLM_INLINE vec3s glms_cross(vec3s a, vec3s b);
@@ -1113,9 +1113,9 @@ glms_vec3_(faceforward)(vec3s N, vec3s I, vec3s Nref) {
  */
 CGLM_INLINE
 vec3s
-glms_vec3_(reflect)(vec3s I, vec3s N) {
+glms_vec3_(reflect)(vec3s v, vec3s n) {
   vec3s dest;
-  glm_vec3_reflect(I.raw, N.raw, dest.raw);
+  glm_vec3_reflect(v.raw, n.raw, dest.raw);
   return dest;
 }
 

include/cglm/struct/vec4.h

@@ -67,8 +67,8 @@
    CGLM_INLINE vec4s glms_vec4_cubic(float s);
    CGLM_INLINE vec4s glms_vec4_swizzle(vec4s v, int mask);
    CGLM_INLINE vec4s glms_vec4_make(float * restrict src);
-   CGLM_INLINE vec4s glms_vec4_reflect(vec4s I, vec4s N);
+   CGLM_INLINE vec4s glms_vec4_reflect(vec4s v, vec4s n);
-   CGLM_INLINE bool  glms_vec4_refract(vec4s I, vec4s N, float eta, vec4s *dest)
+   CGLM_INLINE bool  glms_vec4_refract(vec4s v, vec4s n, float eta, vec4s *dest)
  */
 
 #ifndef cglms_vec4s_h
@@ -932,15 +932,15 @@ glms_vec4_(make)(const float * __restrict src) {
 /*!
  * @brief reflection vector using an incident ray and a surface normal
  *
- * @param[in]  I    incident vector
+ * @param[in]  v    incident vector
- * @param[in]  N    normalized normal vector
+ * @param[in]  n    normalized normal vector
  * @returns reflection result
  */
 CGLM_INLINE
 vec4s
-glms_vec4_(reflect)(vec4s I, vec4s N) {
+glms_vec4_(reflect)(vec4s v, vec4s n) {
   vec4s dest;
-  glm_vec4_reflect(I.raw, N.raw, dest.raw);
+  glm_vec4_reflect(v.raw, n.raw, dest.raw);
   return dest;
 }
 
@@ -955,8 +955,8 @@ glms_vec4_(reflect)(vec4s I, vec4s N) {
  * incident vector 'I' in the output 'dest', users requiring the preservation of
  * the 'w' component should manually adjust 'dest' after calling this function.
  *
- * @param[in]  I    normalized incident vector
+ * @param[in]  v    normalized incident vector
- * @param[in]  N    normalized normal vector
+ * @param[in]  n    normalized normal vector
  * @param[in]  eta  ratio of indices of refraction (incident/transmitted)
  * @param[out] dest refraction vector if refraction occurs; zero vector otherwise
  *
@@ -964,8 +964,8 @@ glms_vec4_(reflect)(vec4s I, vec4s N) {
  */
 CGLM_INLINE
 bool
-glms_vec4_(refract)(vec4s I, vec4s N, float eta, vec4s * __restrict dest) {
+glms_vec4_(refract)(vec4s v, vec4s n, float eta, vec4s * __restrict dest) {
-  return glm_vec4_refract(I.raw, N.raw, eta, dest->raw);
+  return glm_vec4_refract(v.raw, n.raw, eta, dest->raw);
 }
 
 #endif /* cglms_vec4s_h */

include/cglm/vec2.h

@@ -55,8 +55,8 @@
    CGLM_INLINE void  glm_vec2_clamp(vec2 v, float minVal, float maxVal)
    CGLM_INLINE void  glm_vec2_lerp(vec2 from, vec2 to, float t, vec2 dest)
    CGLM_INLINE void  glm_vec2_make(float * restrict src, vec2 dest)
-   CGLM_INLINE void  glm_vec2_reflect(vec2 I, vec2 N, vec2 dest)
+   CGLM_INLINE void  glm_vec2_reflect(vec2 v, vec2 n, vec2 dest)
-   CGLM_INLINE void  glm_vec2_refract(vec2 I, vec2 N, float eta, vec2 dest)
+   CGLM_INLINE void  glm_vec2_refract(vec2 v, vec2 n, float eta, vec2 dest)
  */
 
 #ifndef cglm_vec2_h
@@ -716,16 +716,16 @@ glm_vec2_make(const float * __restrict src, vec2 dest) {
 /*!
  * @brief reflection vector using an incident ray and a surface normal
  *
- * @param[in]  I    incident vector
+ * @param[in]  v    incident vector
- * @param[in]  N    normalized normal vector
+ * @param[in]  n    normalized normal vector
  * @param[out] dest destination vector for the reflection result
  */
 CGLM_INLINE
 void
-glm_vec2_reflect(vec2 I, vec2 N, vec2 dest) {
+glm_vec2_reflect(vec2 v, vec2 n, vec2 dest) {
   vec2 temp;
-  glm_vec2_scale(N, 2.0f * glm_vec2_dot(I, N), temp);
+  glm_vec2_scale(n, 2.0f * glm_vec2_dot(v, n), temp);
-  glm_vec2_sub(I, temp, dest);
+  glm_vec2_sub(v, temp, dest);
 }
 
 /*!
@@ -735,8 +735,8 @@ glm_vec2_reflect(vec2 I, vec2 N, vec2 dest) {
  * occurs (angle too great given eta), dest is set to zero and returns false.
  * Otherwise, computes refraction vector, stores it in dest, and returns true.
  *
- * @param[in]  I    normalized incident vector
+ * @param[in]  v    normalized incident vector
- * @param[in]  N    normalized normal vector
+ * @param[in]  n    normalized normal vector
  * @param[in]  eta  ratio of indices of refraction (incident/transmitted)
  * @param[out] dest refraction vector if refraction occurs; zero vector otherwise
  *
@@ -744,10 +744,10 @@ glm_vec2_reflect(vec2 I, vec2 N, vec2 dest) {
  */
 CGLM_INLINE
 bool
-glm_vec2_refract(vec2 I, vec2 N, float eta, vec2 dest) {
+glm_vec2_refract(vec2 v, vec2 v, float eta, vec2 dest) {
   float ndi, eni, k;
 
-  ndi = glm_vec2_dot(N, I);
+  ndi = glm_vec2_dot(n, v);
   eni = eta * ndi;
   k   = 1.0f + eta * eta - eni * eni;
 
@@ -756,8 +756,8 @@ glm_vec2_refract(vec2 I, vec2 N, float eta, vec2 dest) {
     return false;
   }
 
-  glm_vec2_scale(I, eta, dest);
+  glm_vec2_scale(v, eta, dest);
-  glm_vec2_mulsubs(N, eni + sqrtf(k), dest);
+  glm_vec2_mulsubs(n, eni + sqrtf(k), dest);
   return true;
 }
 

include/cglm/vec3.h

@@ -80,9 +80,9 @@
    CGLM_INLINE void  glm_vec3_smoothinterpc(vec3 from, vec3 to, float t, vec3 dest);
    CGLM_INLINE void  glm_vec3_swizzle(vec3 v, int mask, vec3 dest);
    CGLM_INLINE void  glm_vec3_make(float * restrict src, vec3 dest);
-   CGLM_INLINE void  glm_vec3_faceforward(vec3 N, vec3 I, vec3 Nref, vec3 dest);
+   CGLM_INLINE void  glm_vec3_faceforward(vec3 n, vec3 v, vec3 nref, vec3 dest);
-   CGLM_INLINE void  glm_vec3_reflect(vec3 I, vec3 N, vec3 dest);
+   CGLM_INLINE void  glm_vec3_reflect(vec3 v, vec3 n, vec3 dest);
-   CGLM_INLINE void  glm_vec3_refract(vec3 I, vec3 N, float eta, vec3 dest);
+   CGLM_INLINE void  glm_vec3_refract(vec3 v, vec3 n, float eta, vec3 dest);
 
  Convenient:
    CGLM_INLINE void  glm_cross(vec3 a, vec3 b, vec3 d);
@@ -1210,36 +1210,36 @@ glm_vec3_make(const float * __restrict src, vec3 dest) {
  *
  * orients a vector to point away from a surface as defined by its normal
  *
- * @param[in] N      vector to orient
+ * @param[in] n      vector to orient
- * @param[in] I      incident vector
+ * @param[in] v      incident vector
- * @param[in] Nref   reference vector
+ * @param[in] nref   reference vector
  * @param[out] dest  oriented vector, pointing away from the surface
  */
 CGLM_INLINE
 void
-glm_vec3_faceforward(vec3 N, vec3 I, vec3 Nref, vec3 dest) {
+glm_vec3_faceforward(vec3 n, vec3 v, vec3 nref, vec3 dest) {
-  if (glm_vec3_dot(I, Nref) < 0.0f) {
+  if (glm_vec3_dot(v, nref) < 0.0f) {
     /* N is facing away from I */
-    glm_vec3_copy(N, dest);
+    glm_vec3_copy(n, dest);
   } else {
     /* N is facing towards I, negate it */
-    glm_vec3_negate_to(N, dest);
+    glm_vec3_negate_to(n, dest);
   }
 }
 
 /*!
  * @brief reflection vector using an incident ray and a surface normal
  *
- * @param[in]  I    incident vector
+ * @param[in]  v    incident vector
- * @param[in]  N    normalized normal vector
+ * @param[in]  n    normalized normal vector
  * @param[out] dest reflection result
  */
 CGLM_INLINE
 void
-glm_vec3_reflect(vec3 I, vec3 N, vec3 dest) {
+glm_vec3_reflect(vec3 v, vec3 n, vec3 dest) {
   vec3 temp;
-  glm_vec3_scale(N, 2.0f * glm_vec3_dot(I, N), temp);
+  glm_vec3_scale(n, 2.0f * glm_vec3_dot(v, n), temp);
-  glm_vec3_sub(I, temp, dest);
+  glm_vec3_sub(v, temp, dest);
 }
 
 /*!
@@ -1249,8 +1249,8 @@ glm_vec3_reflect(vec3 I, vec3 N, vec3 dest) {
  * occurs (angle too great given eta), dest is set to zero and returns false.
  * Otherwise, computes refraction vector, stores it in dest, and returns true.
  *
- * @param[in]  I    normalized incident vector
+ * @param[in]  v    normalized incident vector
- * @param[in]  N    normalized normal vector
+ * @param[in]  n    normalized normal vector
  * @param[in]  eta  ratio of indices of refraction (incident/transmitted)
  * @param[out] dest refraction vector if refraction occurs; zero vector otherwise
  *
@@ -1258,10 +1258,10 @@ glm_vec3_reflect(vec3 I, vec3 N, vec3 dest) {
  */
 CGLM_INLINE
 bool
-glm_vec3_refract(vec3 I, vec3 N, float eta, vec3 dest) {
+glm_vec3_refract(vec3 v, vec3 n, float eta, vec3 dest) {
   float ndi, eni, k;
 
-  ndi = glm_vec3_dot(N, I);
+  ndi = glm_vec3_dot(n, v);
   eni = eta * ndi;
   k   = 1.0f + eta * eta - eni * eni;
 
@@ -1270,8 +1270,8 @@ glm_vec3_refract(vec3 I, vec3 N, float eta, vec3 dest) {
     return false;
   }
 
-  glm_vec3_scale(I, eta, dest);
+  glm_vec3_scale(v, eta, dest);
-  glm_vec3_mulsubs(N, eni + sqrtf(k), dest);
+  glm_vec3_mulsubs(n, eni + sqrtf(k), dest);
   return true;
 }
 

include/cglm/vec4.h

@@ -65,8 +65,8 @@
    CGLM_INLINE void  glm_vec4_smoothinterpc(vec4 from, vec4 to, float t, vec4 dest);
    CGLM_INLINE void  glm_vec4_swizzle(vec4 v, int mask, vec4 dest);
    CGLM_INLINE void  glm_vec4_make(float * restrict src, vec4 dest);
-   CGLM_INLINE void  glm_vec4_reflect(vec4 I, vec4 N, vec4 dest);
+   CGLM_INLINE void  glm_vec4_reflect(vec4 v, vec4 n, vec4 dest);
-   CGLM_INLINE void  glm_vec4_refract(vec4 I, vec4 N, float eta, vec4 dest);
+   CGLM_INLINE void  glm_vec4_refract(vec4 v, vec4 n, float eta, vec4 dest);
 
  DEPRECATED:
    glm_vec4_dup
@@ -1309,20 +1309,20 @@ glm_vec4_make(const float * __restrict src, vec4 dest) {
 /*!
  * @brief reflection vector using an incident ray and a surface normal
  *
- * @param[in]  I    incident vector
+ * @param[in]  v    incident vector
- * @param[in]  N    normalized normal vector
+ * @param[in]  n    normalized normal vector
  * @param[out] dest destination vector for the reflection result
  */
 CGLM_INLINE
 void
-glm_vec4_reflect(vec4 I, vec4 N, vec4 dest) {
+glm_vec4_reflect(vec4 v, vec4 n, vec4 dest) {
   vec4 temp;
 
   /* TODO: direct simd touch */
-  glm_vec4_scale(N, 2.0f * glm_vec4_dot(I, N), temp);
+  glm_vec4_scale(n, 2.0f * glm_vec4_dot(v, n), temp);
-  glm_vec4_sub(I, temp, dest);
+  glm_vec4_sub(v, temp, dest);
 
-  dest[3] = I[3];
+  dest[3] = v[3];
 }
 
 /*!
@@ -1336,8 +1336,8 @@ glm_vec4_reflect(vec4 I, vec4 N, vec4 dest) {
  * incident vector 'I' in the output 'dest', users requiring the preservation of
  * the 'w' component should manually adjust 'dest' after calling this function.
  *
- * @param[in]  I    normalized incident vector
+ * @param[in]  v    normalized incident vector
- * @param[in]  N    normalized normal vector
+ * @param[in]  n    normalized normal vector
  * @param[in]  eta  ratio of indices of refraction (incident/transmitted)
  * @param[out] dest refraction vector if refraction occurs; zero vector otherwise
  *
@@ -1345,10 +1345,10 @@ glm_vec4_reflect(vec4 I, vec4 N, vec4 dest) {
  */
 CGLM_INLINE
 bool
-glm_vec4_refract(vec4 I, vec4 N, float eta, vec4 dest) {
+glm_vec4_refract(vec4 v, vec4 n, float eta, vec4 dest) {
   float ndi, eni, k;
 
-  ndi = glm_vec4_dot(N, I);
+  ndi = glm_vec4_dot(n, v);
   eni = eta * ndi;
   k   = 1.0f + eta * eta - eni * eni;
 
@@ -1357,7 +1357,7 @@ glm_vec4_refract(vec4 I, vec4 N, float eta, vec4 dest) {
     return false;
   }
 
-  glm_vec4_scale(I, eta, dest);
+  glm_vec4_scale(v, eta, dest);
   glm_vec4_mulsubs(N, eni + sqrtf(k), dest);
   return true;
 }

src/vec2.c

@@ -305,12 +305,12 @@ glmc_vec2_make(const float * __restrict src, vec2 dest) {
 
 CGLM_EXPORT
 void
-glmc_vec2_reflect(vec2 I, vec2 N, vec2 dest) {
+glmc_vec2_reflect(vec2 v, vec2 n, vec2 dest) {
-  glm_vec2_reflect(I, N, dest);
+  glm_vec2_reflect(v, n, dest);
 }
 
 CGLM_EXPORT
 bool
-glmc_vec2_refract(vec2 I, vec2 N, float eta, vec2 dest) {
+glmc_vec2_refract(vec2 v, vec2 n, float eta, vec2 dest) {
-  return glm_vec2_refract(I, N, eta, dest);
+  return glm_vec2_refract(v, n, eta, dest);
 }

src/vec3.c

@@ -462,18 +462,18 @@ glmc_vec3_make(const float * __restrict src, vec3 dest) {
 
 CGLM_EXPORT
 void
-glmc_vec3_faceforward(vec3 N, vec3 I, vec3 Nref, vec3 dest) {
+glmc_vec3_faceforward(vec3 n, vec3 v, vec3 nref, vec3 dest) {
-  glm_vec3_faceforward(N, I, Nref, dest);
+  glm_vec3_faceforward(n, v, nref, dest);
 }
 
 CGLM_EXPORT
 void
-glmc_vec3_reflect(vec3 I, vec3 N, vec3 dest) {
+glmc_vec3_reflect(vec3 v, vec3 n, vec3 dest) {
-  glm_vec3_reflect(I, N, dest);
+  glm_vec3_reflect(v, n, dest);
 }
 
 CGLM_EXPORT
 bool
-glmc_vec3_refract(vec3 I, vec3 N, float eta, vec3 dest) {
+glmc_vec3_refract(vec3 v, vec3 n, float eta, vec3 dest) {
-  return glm_vec3_refract(I, N, eta, dest);
+  return glm_vec3_refract(v, n, eta, dest);
 }

src/vec4.c

@@ -426,12 +426,12 @@ glmc_vec4_make(const float * __restrict src, vec4 dest) {
 
 CGLM_EXPORT
 void
-glmc_vec4_reflect(vec4 I, vec4 N, vec4 dest) {
+glmc_vec4_reflect(vec4 v, vec4 n, vec4 dest) {
-  glm_vec4_reflect(I, N, dest);
+  glm_vec4_reflect(v, n, dest);
 }
 
 CGLM_EXPORT
 bool
-glmc_vec4_refract(vec4 I, vec4 N, float eta, vec4 dest) {
+glmc_vec4_refract(vec4 v, vec4 n, float eta, vec4 dest) {
-  return glm_vec4_refract(I, N, eta, dest);
+  return glm_vec4_refract(v, n, eta, dest);
 }