Add glm_perspective_rh_zo function + tests

This commit adds the RH/ZO perspective function. It does so in the new
file `cam_rh_zo.h` and further refactors the LH variant into new file
`cam_lh_zo.h`. This creates some churn in the tests and configuration
files as new test files were added as well, and all these changes found
their way into the build files.

Tests passing on Linux.

include/cglm/cam.h

@@ -248,39 +248,6 @@ glm_perspective(float fovy, float aspect, float nearZ, float farZ, mat4 dest) {
   dest[3][2] = 2.0f * nearZ * farZ * fn;
 }
 
-/*!
- * @brief set up perspective projection matrix with a left-hand coordinate
- * system (suitable for DirectX, Metal and Vulkan) and a clip-space with
- * depth values from zero to one.
- *
- * @param[in]  fovy    field of view angle
- * @param[in]  aspect  aspect ratio ( width / height )
- * @param[in]  nearVal near clipping plane
- * @param[in]  farVal  far clipping planes
- * @param[out] dest    result matrix
- */
-CGLM_INLINE
-void
-glm_perspective_lh_zo(float fovy,
-                      float aspect,
-                      float nearVal,
-                      float farVal,
-                      mat4  dest) {
-  /* Impl follows glm::perspectiveLH_ZO in glm/ext/matrix_clip_space.inl */
-  float f, fn;
-
-  glm_mat4_zero(dest);
-
-  f  = 1.0f / tanf(fovy * 0.5f);
-  fn = 1.0f / (farVal - nearVal);
-
-  dest[0][0] = f / aspect;
-  dest[1][1] = f;
-  dest[2][2] = farVal * fn;
-  dest[2][3] = 1.0f;
-  dest[3][2] = -(farVal * nearVal * fn);
-}
-
 /*!
  * @brief extend perspective projection matrix's far distance
  *

include/cglm/cam_lh_zo.h

@@ -0,0 +1,57 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+/*
+ Functions:
+   CGLM_INLINE void  glm_perspective_lh_zo(float fovy,
+                                           float aspect,
+                                           float nearVal,
+                                           float farVal,
+                                           mat4  dest)
+ */
+
+#ifndef cglm_cam_lh_zo_h
+#define cglm_cam_lh_zo_h
+
+#include "common.h"
+#include "plane.h"
+
+
+/*!
+ * @brief set up perspective projection matrix with a left-hand coordinate
+ * system (suitable, apparently, for DirectX and Metal) and a clip-space with
+ * depth values from zero to one.
+ *
+ * @param[in]  fovy    field of view angle
+ * @param[in]  aspect  aspect ratio ( width / height )
+ * @param[in]  nearVal near clipping plane
+ * @param[in]  farVal  far clipping planes
+ * @param[out] dest    result matrix
+ */
+CGLM_INLINE
+void
+glm_perspective_lh_zo(float fovy,
+                      float aspect,
+                      float nearVal,
+                      float farVal,
+                      mat4  dest) {
+  /* Impl follows glm::perspectiveLH_ZO in glm/ext/matrix_clip_space.inl */
+  float fl, fn;
+
+  glm_mat4_zero(dest);
+
+  fl = 1.0f / tanf(fovy * 0.5f);
+  fn = 1.0f / (farVal - nearVal);
+
+  dest[0][0] = fl / aspect;
+  dest[1][1] = fl;
+  dest[2][2] = farVal * fn;
+  dest[2][3] = 1.0f;
+  dest[3][2] = -(farVal * nearVal * fn);
+}
+
+#endif /*cglm_cam_lh_zo_h*/

include/cglm/cam_rh_zo.h

@@ -0,0 +1,58 @@
+/*
+ * Copyright (c), Recep Aslantas.
+ *
+ * MIT License (MIT), http://opensource.org/licenses/MIT
+ * Full license can be found in the LICENSE file
+ */
+
+/*
+ Functions:
+   CGLM_INLINE void  glm_perspective_rh_zo(float fovy,
+                                           float aspect,
+                                           float nearVal,
+                                           float farVal,
+                                           mat4  dest)
+ */
+
+#ifndef cglm_cam_rh_zo_h
+#define cglm_cam_rh_zo_h
+
+#include "common.h"
+#include "plane.h"
+
+/*!
+ * @brief set up perspective projection matrix with a right-hand coordinate
+ * system (suitable for Vulkan) and a clip-space with depth values from zero
+ * to one.
+ *
+ * https://github.com/godlikepanos/anki-3d-engine/blob/317cb379ff3a7b09f9034f49c7bdab0f96a1c0b3/AnKi/Math/Mat.h#L1254
+ *
+ * @param[in]  fovy    field of view angle
+ * @param[in]  aspect  aspect ratio ( width / height )
+ * @param[in]  nearVal near clipping plane
+ * @param[in]  farVal  far clipping planes
+ * @param[out] dest    result matrix
+ */
+CGLM_INLINE
+void
+glm_perspective_rh_zo(float fovy,
+                      float aspect,
+                      float nearVal,
+                      float farVal,
+                      mat4  dest) {
+  /* Impl follows glm::perspectiveRH_ZO in glm/ext/matrix_clip_space.inl */
+  float fl, fn;
+
+  glm_mat4_zero(dest);
+
+  fl = 1.0f / tanf(fovy * 0.5f);
+  fn = 1.0f / (farVal - nearVal);
+
+  dest[0][0] = fl / aspect;
+  dest[1][1] = fl;
+  dest[2][2] = -farVal * fn;
+  dest[2][3] = -1.0f;
+  dest[3][2] = -farVal * nearVal * fn;
+}
+
+#endif /*cglm_cam_lh_zo_h*/

include/cglm/cglm.h

@@ -17,6 +17,8 @@
 #include "mat2.h"
 #include "affine.h"
 #include "cam.h"
+#include "cam_lh_zo.h"
+#include "cam_rh_zo.h"
 #include "frustum.h"
 #include "quat.h"
 #include "euler.h"