Cleanup: spelling in comments

intern/cycles/kernel/data_template.h

@@ -36,7 +36,7 @@ KERNEL_STRUCT_MEMBER(background, int, map_res_x)
 KERNEL_STRUCT_MEMBER(background, int, map_res_y)
 /* Multiple importance sampling. */
 KERNEL_STRUCT_MEMBER(background, int, use_mis)
-/* Lightgroup. */
+/* Light-group. */
 KERNEL_STRUCT_MEMBER(background, int, lightgroup)
 /* Light Index. */
 KERNEL_STRUCT_MEMBER(background, int, light_index)

intern/cycles/kernel/geom/object.h

@@ -288,7 +288,7 @@ ccl_device_inline float object_pass_id(KernelGlobals kg, int object)
   return kernel_data_fetch(objects, object).pass_id;
 }
 
-/* Lightgroup of lamp */
+/* Light-group of lamp. */
 
 ccl_device_inline int lamp_lightgroup(KernelGlobals kg, int lamp)
 {
@@ -298,7 +298,7 @@ ccl_device_inline int lamp_lightgroup(KernelGlobals kg, int lamp)
   return kernel_data_fetch(lights, lamp).lightgroup;
 }
 
-/* Lightgroup of object */
+/* Light-group of object. */
 
 ccl_device_inline int object_lightgroup(KernelGlobals kg, int object)
 {

intern/cycles/kernel/integrator/shade_surface.h

@@ -221,7 +221,7 @@ integrate_direct_light_shadow_init_common(KernelGlobals kg,
         state, path, bounce);
   }
 
-  /* Write Lightgroup, +1 as lightgroup is int but we need to encode into a uint8_t. */
+  /* Write Light-group, +1 as light-group is int but we need to encode into a uint8_t. */
   INTEGRATOR_STATE_WRITE(shadow_state, shadow_path, lightgroup) = light_group;
 
 #ifdef __PATH_GUIDING__

intern/cycles/kernel/integrator/shade_volume.h

@@ -879,7 +879,7 @@ ccl_device_forceinline void integrate_volume_direct_light(
       state, path, transmission_bounce);
   INTEGRATOR_STATE_WRITE(shadow_state, shadow_path, throughput) = throughput_phase;
 
-  /* Write Lightgroup, +1 as lightgroup is int but we need to encode into a uint8_t. */
+  /* Write Light-group, +1 as light-group is int but we need to encode into a uint8_t. */
   INTEGRATOR_STATE_WRITE(
       shadow_state, shadow_path, lightgroup) = (ls.type != LIGHT_BACKGROUND) ?
                                                    ls.group + 1 :

source/blender/blenlib/BLI_math_base.h

@@ -113,7 +113,7 @@ MINLINE float scalenorm(float a, float b, float x);
  */
 MINLINE double scalenormd(double a, double b, double x);
 
-/* NOTE: Compilers will upcast all types smaller than int to int when performing arithmetic
+/* NOTE: Compilers will up-cast all types smaller than int to int when performing arithmetic
  * operation. */
 
 MINLINE int square_s(short a);

source/blender/blenloader/intern/readfile.cc

@@ -2675,11 +2675,11 @@ static void direct_link_library(FileData *fd, Library *lib, Main *main)
   Main *newmain;
 
   /* Make sure we have full path in lib->filepath_abs */
-  /* Note that since existing libs are searched by their absolute path, this has to be generated
+  /* NOTE: Since existing libraries are searched by their absolute path, this has to be generated
    * before the lookup below. Otherwise, in case the stored absolute filepath is not 'correct' (may
    * be empty, or have been stored in a different 'relative path context'), the comparison below
    * will always fail, leading to creating duplicates IDs of a same library. */
-  /* TODO: May be worth checking whether conparison below could use `lib->filepath` instead? */
+  /* TODO: May be worth checking whether comparison below could use `lib->filepath` instead? */
   STRNCPY(lib->filepath_abs, lib->filepath);
   BLI_path_abs(lib->filepath_abs, fd->relabase);
   BLI_path_normalize(lib->filepath_abs);

source/blender/editors/sculpt_paint/curves_sculpt_comb.cc

@@ -44,10 +44,10 @@
 
 /**
  * The code below uses a prefix naming convention to indicate the coordinate space:
- * cu: Local space of the curves object that is being edited.
- * su: Local space of the surface object.
- * wo: World space.
- * re: 2D coordinates within the region.
+ * `cu`: Local space of the curves object that is being edited.
+ * `su`: Local space of the surface object.
+ * `wo`: World space.
+ * `re`: 2D coordinates within the region.
  */
 
 namespace blender::ed::sculpt_paint {

source/blender/makesdna/DNA_object_types.h

@@ -503,7 +503,7 @@ typedef struct Object {
 
   ObjectLineArt lineart;
 
-  /** Lightgroup membership information. */
+  /** Light-group membership information. */
   struct LightgroupMembership *lightgroup;
 
   /** Light linking information. */

source/blender/makesdna/DNA_screen_types.h

@@ -180,8 +180,8 @@ typedef struct Panel {
  * There are 16 defines because the expansion data is typically stored in a short.
  *
  * \note Expansion for instanced panels is stored in depth first order. For example, the value of
- * UI_SUBPANEL_DATA_EXPAND_2 correspond to mean the expansion of the second subpanel or the first
- * subpanel's first subpanel.
+ * UI_SUBPANEL_DATA_EXPAND_2 correspond to mean the expansion of the second sub-panel or the first
+ * sub-panel's first sub-panel.
  */
 typedef enum uiPanelDataExpansion {
   UI_PANEL_DATA_EXPAND_ROOT = (1 << 0),

source/blender/makesdna/DNA_sequence_types.h

@@ -164,7 +164,7 @@ typedef struct Sequence {
   int len;
   /**
    * Start frame of contents of strip in absolute frame coordinates.
-   * For metastrips start of first strip startdisp.
+   * For meta-strips start of first strip startdisp.
    */
   float start;
   /**

source/blender/makesdna/DNA_world_types.h

@@ -73,7 +73,7 @@ typedef struct World {
   /* nodes */
   struct bNodeTree *nodetree;
 
-  /* Lightgroup membership information. */
+  /** Light-group membership information. */
   struct LightgroupMembership *lightgroup;
 
   /** Runtime. */

source/blender/windowmanager/intern/wm_window.c

@@ -1398,7 +1398,7 @@ static bool ghost_event_proc(GHOST_EventHandle evt, GHOST_TUserDataPtr C_void_pt
             WM_event_add_notifier(C, NC_WINDOW | NA_EDITED, NULL);
 
 #if defined(__APPLE__) || defined(WIN32)
-            /* OSX and Win32 don't return to the mainloop while resize */
+            /* MACOS and WIN32 don't return to the main-loop while resize. */
             wm_window_timer(C);
             wm_event_do_handlers(C);
             wm_event_do_notifiers(C);