Cleanup: spelling in comments

intern/cycles/kernel/closure/bsdf_microfacet.h

@@ -423,7 +423,7 @@ ccl_device_inline float bsdf_aniso_lambda(float alpha_x, float alpha_y, float3 V
   return bsdf_lambda_from_sqr_alpha_tan_n<m_type>(sqr_alpha_tan_n);
 }
 
-/* Monodirectional shadowing-masking term. */
+/* Mono-directional shadowing-masking term. */
 template<MicrofacetType m_type> ccl_device_inline float bsdf_G(float alpha2, float cos_N)
 {
   return 1.0f / (1.0f + bsdf_lambda<m_type>(alpha2, cos_N));

intern/cycles/kernel/closure/bsdf_principled_hair_huang.h

@@ -268,13 +268,13 @@ ccl_device_inline float3 sample_wh(
   return wh;
 }
 
-/* Check micronormal/mesonormal direct visiblity from direction `v`. */
+/* Check micronormal/mesonormal direct visibility from direction `v`. */
 ccl_device_inline bool microfacet_visible(const float3 v, const float3 m, const float3 h)
 {
   return (dot(v, h) > 0.0f && dot(v, m) > 0.0f);
 }
 
-/* Check micronormal/mesonormal direct visiblity from directions `wi` and `wo`. */
+/* Check micronormal/mesonormal direct visibility from directions `wi` and `wo`. */
 ccl_device_inline bool microfacet_visible(const float3 wi,
                                           const float3 wo,
                                           const float3 m,
@@ -502,7 +502,7 @@ ccl_device Spectrum bsdf_hair_huang_eval_residual(KernelGlobals kg,
         const float rcp_norm_wh2 = 1.0f / len(wh2);
         wh2 *= rcp_norm_wh2;
         const float cos_mh2 = dot(wmt, wh2);
-        if (cos_mh2 >= 0.0f) { /* Microfacet visiblity from macronormal. */
+        if (cos_mh2 >= 0.0f) { /* Microfacet visibility from macronormal. */
           const float cos_hi2 = dot(-wt, wh2);
           const float cos_ho2 = dot(-wo, wh2);
           const float cos_mo2 = dot(-wo, wmt);

source/blender/blenkernel/BKE_node_runtime.hh

@@ -253,8 +253,9 @@ class bNodeRuntime : NonCopyable, NonMovable {
   bNode *original = nullptr;
 
   /**
-   * XXX TODO
-   * Node totr size depends on the prvr size, which in turn is determined from preview size.
+   * XXX:
+   * TODO: `prvr` does not exist!
+   * Node totr size depends on the `prvr` size, which in turn is determined from preview size.
    * In earlier versions bNodePreview was stored directly in nodes, but since now there can be
    * multiple instances using different preview images it is possible that required node size
    * varies between instances. preview_xsize, preview_ysize defines a common reserved size for

source/blender/blenkernel/intern/movieclip.cc

@@ -2069,7 +2069,7 @@ void BKE_movieclip_free_gputexture(MovieClip *clip)
     MovieClip_RuntimeGPUTexture *tex = (MovieClip_RuntimeGPUTexture *)BLI_pophead(
         &clip->runtime.gputextures);
     for (int i = 0; i < TEXTARGET_COUNT; i++) {
-      /* free glsl image binding */
+      /* Free GLSL image binding. */
       if (tex->gputexture[i]) {
         GPU_texture_free(tex->gputexture[i]);
         tex->gputexture[i] = nullptr;

source/blender/blenkernel/intern/studiolight.cc

@@ -1074,7 +1074,7 @@ static float blinn_specular(const float L[3],
   return spec_light * (1.0 - w2) + spec_env * w2;
 }
 
-/* Keep in sync with the glsl shader function get_world_lighting() */
+/* Keep in sync with the GLSL shader function `get_world_lighting()`. */
 static void studiolight_lights_eval(StudioLight *sl, float color[3], const float normal[3])
 {
   float R[3], I[3] = {0.0f, 0.0f, 1.0f}, N[3] = {normal[0], normal[2], -normal[1]};

source/blender/blenloader/intern/versioning_290.cc

@@ -778,9 +778,9 @@ static void do_versions_291_fcurve_handles_limit(FCurve *fcu)
     }
 
     const float factor = time_delta / total_len;
-    /* Current keyframe's right handle: */
+    /* Current key-frame's right handle: */
     madd_v2_v2v2fl(bezt->vec[2], v1, delta1, -factor); /* vec[2] = v1 - factor * delta1 */
-    /* Next keyframe's left handle: */
+    /* Next key-frame's left handle: */
     madd_v2_v2v2fl(nextbezt->vec[0], v4, delta2, -factor); /* vec[0] = v4 - factor * delta2 */
   }
 }

source/blender/blenloader/intern/versioning_400.cc

@@ -82,7 +82,7 @@ void do_versions_after_linking_400(FileData *fd, Main *bmain)
       }
     }
 
-    /* XXX This was added many years ago (1c19940198) in 'lib_link` code of particles as a bugfix.
+    /* XXX This was added many years ago (1c19940198) in 'lib_link` code of particles as a bug-fix.
      * But this is actually versioning. Should be safe enough here. */
     LISTBASE_FOREACH (ParticleSettings *, part, &bmain->particles) {
       if (!part->effector_weights) {

source/blender/draw/intern/draw_shader_shared.h

@@ -173,7 +173,7 @@ enum eObjectInfoFlag {
 
 struct ObjectInfos {
 #if defined(GPU_SHADER) && !defined(DRAW_FINALIZE_SHADER)
-  /* TODO Rename to struct member for glsl too. */
+  /* TODO Rename to struct member for GLSL too. */
   float4 orco_mul_bias[2];
   float4 ob_color;
   float4 infos;

source/blender/editors/curve/editcurve.cc

@@ -3530,13 +3530,11 @@ static void subdividenurb(Object *obedit, View3D *v3d, int number_cuts)
     else if (nu->pntsv == 1) {
       BPoint *nextbp;
 
-      /*
-       * All flat lines (ie. co-planar), except flat Nurbs. Flat NURB curves
+      /* NOTE(@nzc): All flat lines (ie. co-planar), except flat Nurbs. Flat NURB curves
        * are handled together with the regular NURB plane division, as it
-       * should be. I split it off just now, let's see if it is
-       * stable... nzc 30-5-'00
-       */
-      /* count */
+       * should be. I split it off just now, let's see if it is stable. */
+
+      /* Count. */
       a = nu->pntsu;
       bp = nu->bp;
       while (a--) {
@@ -3596,7 +3594,7 @@ static void subdividenurb(Object *obedit, View3D *v3d, int number_cuts)
     else if (nu->type == CU_NURBS) {
       /* This is a very strange test ... */
       /**
-       * Subdivide NURB surfaces - nzc 30-5-'00 -
+       * NOTE(@nzc): Subdivide NURB surfaces
        *
        * Subdivision of a NURB curve can be effected by adding a
        * control point (insertion of a knot), or by raising the

source/blender/editors/include/ED_keyframes_keylist.hh

@@ -134,8 +134,10 @@ const ActKeyColumn *ED_keylist_find_any_between(const AnimKeylist *keylist,
 bool ED_keylist_is_empty(const AnimKeylist *keylist);
 const ListBase /* ActKeyColumn */ *ED_keylist_listbase(const AnimKeylist *keylist);
 bool ED_keylist_all_keys_frame_range(const AnimKeylist *keylist, Range2f *r_frame_range);
-/* Return the selected keyframe's range. If none are selected, return False and
- * do not affect the frame range. */
+/**
+ * Return the selected key-frame's range. If none are selected, return False and
+ * do not affect the frame range.
+ */
 bool ED_keylist_selected_keys_frame_range(const AnimKeylist *keylist, Range2f *r_frame_range);
 const ActKeyColumn *ED_keylist_array(const AnimKeylist *keylist);
 int64_t ED_keylist_array_len(const AnimKeylist *keylist);

source/blender/editors/render/render_preview.cc

@@ -115,7 +115,7 @@ struct ShaderPreview {
   ID *parent;
   MTex *slot;
 
-  /* datablocks with nodes need full copy during preview render, glsl uses it too */
+  /* Data-blocks with nodes need full copy during preview render, GLSL uses it too. */
   Material *matcopy;
   Tex *texcopy;
   Light *lampcopy;

source/blender/editors/screen/screen_ops.cc

@@ -899,7 +899,7 @@ static AZone *area_actionzone_refresh_xy(ScrArea *area, const int xy[2], const b
         }
       }
       else if (az->type == AZONE_REGION_SCROLL && az->region->visible) {
-        /* If the region is not visible we can ignore this scoller zone. */
+        /* If the region is not visible we can ignore this scroll-bar zone. */
         ARegion *region = az->region;
         View2D *v2d = &region->v2d;
         int scroll_flag = 0;
@@ -969,7 +969,7 @@ static AZone *area_actionzone_refresh_xy(ScrArea *area, const int xy[2], const b
         ED_area_tag_redraw_no_rebuild(area);
       }
       else if (az->type == AZONE_REGION_SCROLL && az->region->visible) {
-        /* If the region is not visible we can ignore this scoller zone. */
+        /* If the region is not visible we can ignore this scroll-bar zone. */
         if (az->direction == AZ_SCROLL_VERT) {
           az->alpha = az->region->v2d.alpha_vert = 0;
           area->flag &= ~AREA_FLAG_ACTIONZONES_UPDATE;

source/blender/editors/space_node/drawnode.cc

@@ -1710,8 +1710,8 @@ void node_link_bezier_points_evaluated(const bNodeLink &link,
 #define LINK_WIDTH (2.5f * UI_SCALE_FAC)
 #define ARROW_SIZE (7 * UI_SCALE_FAC)
 
-/* Reroute arrow shape and mute bar. These are expanded here and shrunk in the glsl code.
- * See: gpu_shader_2D_nodelink_vert.glsl */
+/* Reroute arrow shape and mute bar. These are expanded here and shrunk in the GLSL code.
+ * See: `gpu_shader_2D_nodelink_vert.glsl`. */
 static float arrow_verts[3][2] = {{-1.0f, 1.0f}, {0.0f, 0.0f}, {-1.0f, -1.0f}};
 static float arrow_expand_axis[3][2] = {{0.7071f, 0.7071f}, {M_SQRT2, 0.0f}, {0.7071f, -0.7071f}};
 static float mute_verts[3][2] = {{0.7071f, 1.0f}, {0.7071f, 0.0f}, {0.7071f, -1.0f}};

source/blender/editors/space_node/node_edit.cc

@@ -738,7 +738,7 @@ void ED_node_set_active(
     ED_node_tree_propagate_change(nullptr, bmain, ntree);
 
     if ((node->flag & NODE_ACTIVE_TEXTURE) && !was_active_texture) {
-      /* If active texture changed, free glsl materials. */
+      /* If active texture changed, free GLSL materials. */
       LISTBASE_FOREACH (Material *, ma, &bmain->materials) {
         if (ma->nodetree && ma->use_nodes && ntreeContainsTree(ma->nodetree, ntree)) {
           GPU_material_free(&ma->gpumaterial);

source/blender/geometry/intern/uv_parametrizer.cc

@@ -3854,7 +3854,7 @@ void uv_parametrizer_face_add(ParamHandle *phandle,
     }
     if (permute.size() != nverts) {
       const int pm = int(permute.size());
-      /* Add the remaining pm-gon. */
+      /* Add the remaining `pm-gon` data. */
       Array<ParamKey> vkeys_sub(pm);
       Array<const float *> co_sub(pm);
       Array<float *> uv_sub(pm);

source/blender/gpu/GPU_shader_shared.h

@@ -129,7 +129,7 @@ struct TestOutput {
   TestOutputRawData result;
   /** TestStatus. */
   uint status;
-  /** Line error in the glsl file. */
+  /** Line error in the GLSL file. */
   int line;
   /** TestType of expect and result. */
   uint type;

source/blender/io/collada/GeometryExporter.h

@@ -76,7 +76,7 @@ class GeometryExporter : COLLADASW::LibraryGeometries {
 
   std::string makeTexcoordSourceId(std::string &geom_id, int layer_index, bool is_single_layer);
 
-  /** Creates <source> for texcoords. */
+  /** Creates <source> for texture-coordinates. */
   void createTexcoordsSource(std::string geom_id, Mesh *me);
 
   /** Creates <source> for normals. */

source/blender/makesdna/DNA_view3d_types.h

@@ -40,7 +40,7 @@ typedef struct RegionView3D {
   float persmat[4][4];
   /** Inverse of persmat. */
   float persinv[4][4];
-  /** Offset/scale for camera glsl texcoords. */
+  /** Offset/scale for camera GLSL texture-coordinates. */
   float viewcamtexcofac[4];
 
   /** viewmat/persmat multiplied with object matrix, while drawing and selection. */

source/blender/python/intern/bpy_rna.h

@@ -122,8 +122,9 @@ typedef struct BPy_StructRNA {
 #endif /* !USE_PYRNA_STRUCT_REFERENCE */
 
 #ifdef PYRNA_FREE_SUPPORT
-  bool freeptr; /* needed in some cases if ptr.data is created on the fly, free when deallocing */
-#endif          /* PYRNA_FREE_SUPPORT */
+  /** Needed in some cases if ptr.data is created on the fly, free when deallocating. */
+  bool freeptr;
+#endif /* PYRNA_FREE_SUPPORT */
 } BPy_StructRNA;
 
 typedef struct {

tools/check_source/check_spelling_c_config.py

@@ -45,6 +45,7 @@ dict_custom = {
     "anisotropic",
     "anisotropy",
     "atomicity",
+    "attenuations",
     "bindless",
     "bitwise",
     "blocky",
@@ -148,6 +149,7 @@ dict_custom = {
     "imbricated",
     "impactful",
     "incrementation",
+    "inferencing",
     "initializer",
     "initializers",
     "inlining",
@@ -613,6 +615,14 @@ dict_custom = {
     "lossless",
     "lossy",
     "luma",
+    "macronormal",
+    "macronormals",
+    "mesonormal",
+    "mesonormals",
+    "microfacet",
+    "microfacets",
+    "micronormal",
+    "micronormals",
     "mipmap",
     "mipmapped",
     "mipmapping",