Cleanup: spelling in comments

source/blender/blenkernel/intern/dynamicpaint.c

@@ -6142,7 +6142,7 @@ static bool dynamicPaint_generateBakeData(DynamicPaintSurface *surface,
 
   /* generate surface space partitioning grid */
   surfaceGenerateGrid(surface);
-  /* calculate current frame adjacency point distances and global dirs */
+  /* Calculate current frame adjacency point distances and global directions. */
   dynamicPaint_prepareAdjacencyData(surface, false);
 
   /* Copy current frame vertices to check against in next frame */

source/blender/blenlib/BLI_fileops.h

@@ -149,10 +149,10 @@ eFileAttributes BLI_file_attributes(const char *path);
  * \{ */
 
 /**
- * Scans the contents of the directory named *dirname, and allocates and fills in an
- * array of entries describing them in *filelist.
+ * Scans the contents of the directory named `dir`, and allocates and fills in an
+ * array of entries describing them in `r_filelist`.
  *
- * \return The length of filelist array.
+ * \return The length of `r_filelist` array.
  */
 unsigned int BLI_filelist_dir_contents(const char *dir, struct direntry **r_filelist);
 /**

source/blender/blenlib/intern/path_util.c

@@ -629,7 +629,7 @@ bool BLI_path_parent_dir(char *path)
   BLI_path_normalize(NULL, tmp); /* does all the work of normalizing the path for us */
 
   if (!BLI_path_extension_check(tmp, parent_dir)) {
-    strcpy(path, tmp); /* We assume pardir is always shorter... */
+    strcpy(path, tmp); /* We assume the parent directory is always shorter. */
     return true;
   }
 

source/blender/blenloader/intern/readfile.c

@@ -161,14 +161,14 @@
  * which keeps large arrays in memory from data-blocks we may not even use.
  *
  * \note This is disabled when using compression,
- * while zlib supports seek it's unusable slow, see: T61880.
+ * while ZLIB supports seek it's unusably slow, see: T61880.
  */
 #define USE_BHEAD_READ_ON_DEMAND
 
-/* use GHash for BHead name-based lookups (speeds up linking) */
+/** Use #GHash for #BHead name-based lookups (speeds up linking). */
 #define USE_GHASH_BHEAD
 
-/* Use GHash for restoring pointers by name */
+/** Use #GHash for restoring pointers by name. */
 #define USE_GHASH_RESTORE_POINTER
 
 static CLG_LogRef LOG = {"blo.readfile"};
@@ -194,8 +194,10 @@ typedef struct BHeadN {
 
 #define BHEADN_FROM_BHEAD(bh) ((BHeadN *)POINTER_OFFSET(bh, -(int)offsetof(BHeadN, bhead)))
 
-/* We could change this in the future, for now it's simplest if only data is delayed
- * because ID names are used in lookup tables. */
+/**
+ * We could change this in the future, for now it's simplest if only data is delayed
+ * because ID names are used in lookup tables.
+ */
 #define BHEAD_USE_READ_ON_DEMAND(bhead) ((bhead)->code == DATA)
 
 void BLO_reportf_wrap(BlendFileReadReport *reports, eReportType type, const char *format, ...)

source/blender/bmesh/tools/bmesh_bevel.c

@@ -1859,7 +1859,7 @@ static void move_weld_profile_planes(BevVert *bv, BoundVert *bndv1, BoundVert *b
   float l1 = normalize_v3(no);
 
   /* "no" is new normal projection plane, but don't move if it is coplanar with both of the
-   * projection dirs. */
+   * projection directions. */
   float no2[3], no3[3];
   cross_v3_v3v3(no2, d1, bndv1->profile.proj_dir);
   float l2 = normalize_v3(no2);

source/blender/editors/space_file/filesel.c

@@ -1125,8 +1125,8 @@ int file_select_match(struct SpaceFile *sfile, const char *pattern, char *matche
    */
   for (int i = 0; i < n; i++) {
     FileDirEntry *file = filelist_file(sfile->files, i);
-    /* Do not check whether file is a file or dir here! Causes T44243
-     * (we do accept dirs at this stage). */
+    /* Do not check whether file is a file or dir here! Causes: T44243
+     * (we do accept directories at this stage). */
     if (fnmatch(pattern, file->relpath, 0) == 0) {
       filelist_entry_select_set(sfile->files, file, FILE_SEL_ADD, FILE_SEL_SELECTED, CHECK_ALL);
       if (!match) {

source/blender/editors/space_outliner/outliner_dragdrop.cc

@@ -1358,7 +1358,7 @@ static TreeElement *outliner_item_drag_element_find(SpaceOutliner *space_outline
                                                     ARegion *region,
                                                     const wmEvent *event)
 {
-  /* NOTE: using EVT_TWEAK_ events to trigger dragging is fine,
+  /* NOTE: using click-drag events to trigger dragging is fine,
    * it sends coordinates from where dragging was started */
   const float my = UI_view2d_region_to_view_y(&region->v2d, event->mval[1]);
   return outliner_find_item_at_y(space_outliner, &space_outliner->tree, my);

source/blender/imbuf/IMB_thumbs.h

@@ -71,7 +71,7 @@ void IMB_thumb_delete(const char *path, ThumbSize size);
 struct ImBuf *IMB_thumb_manage(const char *path, ThumbSize size, ThumbSource source);
 
 /**
- * Create the necessary dirs to store the thumbnails.
+ * Create the necessary directories to store the thumbnails.
  */
 void IMB_thumb_makedirs(void);
 

source/blender/io/collada/DocumentImporter.cpp

@@ -396,8 +396,7 @@ Object *DocumentImporter::create_instance_node(Object *source_ob,
     anim_importer.read_node_transform(instance_node, obn);
     /* if we also have a source_node (always ;), take its
      * transformation matrix and apply it to the newly instantiated
-     * object to account for node hierarchy transforms in
-     * .dae */
+     * object to account for node hierarchy transforms in `.dae`. */
     if (source_node) {
       COLLADABU::Math::Matrix4 mat4 = source_node->getTransformationMatrix();
       COLLADABU::Math::Matrix4 bmat4 =

source/blender/io/collada/SceneExporter.cpp

@@ -189,7 +189,7 @@ void SceneExporter::writeNode(Object *ob)
               "blender", con_tag, "lin_error", con->lin_error);
 
           /* not ideal: add the target object name as another parameter.
-           * No real mapping in the .dae
+           * No real mapping in the `.dae`.
            * Need support for multiple target objects also. */
           const bConstraintTypeInfo *cti = BKE_constraint_typeinfo_get(con);
           ListBase targets = {nullptr, nullptr};

source/blender/render/intern/texture_procedural.c

@@ -102,10 +102,10 @@ static int blend(const Tex *tex, const float texvec[3], TexResult *texres)
     y = texvec[1];
   }
 
-  if (tex->stype == TEX_LIN) { /* lin */
+  if (tex->stype == TEX_LIN) { /* Linear. */
     texres->tin = (1.0f + x) / 2.0f;
   }
-  else if (tex->stype == TEX_QUAD) { /* quad */
+  else if (tex->stype == TEX_QUAD) { /* Quadratic. */
     texres->tin = (1.0f + x) / 2.0f;
     if (texres->tin < 0.0f) {
       texres->tin = 0.0f;
@@ -114,7 +114,7 @@ static int blend(const Tex *tex, const float texvec[3], TexResult *texres)
       texres->tin *= texres->tin;
     }
   }
-  else if (tex->stype == TEX_EASE) { /* ease */
+  else if (tex->stype == TEX_EASE) { /* Ease. */
     texres->tin = (1.0f + x) / 2.0f;
     if (texres->tin <= 0.0f) {
       texres->tin = 0.0f;
@@ -127,10 +127,10 @@ static int blend(const Tex *tex, const float texvec[3], TexResult *texres)
       texres->tin = (3.0f * t - 2.0f * t * texres->tin);
     }
   }
-  else if (tex->stype == TEX_DIAG) { /* diag */
+  else if (tex->stype == TEX_DIAG) { /* Diagonal. */
     texres->tin = (2.0f + x + y) / 4.0f;
   }
-  else if (tex->stype == TEX_RAD) { /* radial */
+  else if (tex->stype == TEX_RAD) { /* Radial. */
     texres->tin = (atan2f(y, x) / (float)(2 * M_PI) + 0.5f);
   }
   else { /* sphere TEX_SPHERE */
@@ -139,7 +139,7 @@ static int blend(const Tex *tex, const float texvec[3], TexResult *texres)
       texres->tin = 0.0f;
     }
     if (tex->stype == TEX_HALO) {
-      texres->tin *= texres->tin; /* halo */
+      texres->tin *= texres->tin; /* Halo. */
     }
   }