Cleanup: spelling in comments

intern/cycles/kernel/bvh/util.h

@@ -37,7 +37,7 @@ ccl_device_forceinline float intersection_t_offset(const float t)
    * always return smallest normalized value. If a denormalized zero is returned
    * it will cause false-positive intersection detection with a distance of 0.
    *
-   * The check relies on the fact that comparison of de-normal values with zero
+   * The check relies on the fact that comparison of denormal values with zero
    * returns true. */
   if (t == 0.0f) {
     /* The exact bit value of this should be 0x1p-126, but hex floating point values notation is

intern/cycles/kernel/device/metal/compat.h

@@ -131,7 +131,7 @@ void kernel_gpu_##name::run(thread MetalKernelContext& context, \
 #else
 
 /* On macOS versions before 14.x, builtin constants (e.g. metal_global_id) must
- * be accessed through attributed entrypoint parameters. */
+ * be accessed through attributed entry-point parameters. */
 
 #define ccl_gpu_kernel_signature(name, ...) \
 struct kernel_gpu_##name \

source/blender/animrig/intern/fcurve.cc

@@ -255,7 +255,7 @@ int insert_vert_fcurve(
   beztr.back = 1.70158f;
 
   /* "elastic" easing - Values here were hand-optimized for a default duration of
-   *                    ~10 frames (typical mograph motion length) */
+   *                    ~10 frames (typical motion-graph motion length). */
   beztr.amplitude = 0.8f;
   beztr.period = 4.1f;
 

source/blender/blenlib/BLI_math_base.hh

@@ -192,18 +192,18 @@ template<typename T> inline T safe_acos(const T &a)
   return math::acos((a));
 }
 
-/* Faster/approximate version of acosf. Max error 4.51803e-5 (0.00258 degrees).*/
+/** Faster/approximate version of `acosf`. Max error 4.51803e-5 (0.00258 degrees). */
 inline float safe_acos_approx(float x)
 {
   const float f = fabsf(x);
-  /* clamp and crush denormals. */
+  /* Clamp and crush denormals. */
   const float m = (f < 1.0f) ? 1.0f - (1.0f - f) : 1.0f;
   /* Based on http://www.pouet.net/topic.php?which=9132&page=2
    * 85% accurate (ULP 0)
-   * Examined 2130706434 values of acos:
-   *   15.2000597 avg ULP diff, 4492 max ULP, 4.51803e-05 max error // without "denormal crush"
-   * Examined 2130706434 values of acos:
-   *   15.2007108 avg ULP diff, 4492 max ULP, 4.51803e-05 max error // with "denormal crush"
+   * Examined 2130706434 values of `acos`:
+   *   15.2000597 avg ULP diff, 4492 max ULP, 4.51803e-05 max error // without "denormal crush".
+   * Examined 2130706434 values of `acos`:
+   *   15.2007108 avg ULP diff, 4492 max ULP, 4.51803e-05 max error // with "denormal crush".
    */
   const float a = sqrtf(1.0f - m) *
                   (1.5707963267f + m * (-0.213300989f + m * (0.077980478f + m * -0.02164095f)));

source/blender/blenlib/intern/math_geom.cc

@@ -3336,18 +3336,16 @@ static bool point_in_slice(const float p[3],
                            const float l1[3],
                            const float l2[3])
 {
-  /*
-   * what is a slice ?
-   * some maths:
+  /* What is a slice?
+   * Some math:
    * a line including (l1, l2) and a point not on the line
    * define a subset of R3 delimited by planes parallel to the line and orthogonal
    * to the (point --> line) distance vector, one plane on the line one on the point,
    * the room inside usually is rather small compared to R3 though still infinite
    * useful for restricting (speeding up) searches
-   * e.g. all points of triangular prism are within the intersection of 3 'slices'
-   * another trivial case : cube
-   * but see a 'spat' which is a deformed cube with paired parallel planes needs only 3 slices too
-   */
+   * e.g. all points of triangular prism are within the intersection of 3 "slices"
+   * Another trivial case is a cube, but see a "spat" which is a deformed cube
+   * with paired parallel planes needs only 3 slices too. */
   float h, rp[3], cp[3], q[3];
 
   closest_to_line_v3(cp, v1, l1, l2);

source/blender/compositor/intern/COM_FullFrameExecutionModel.cc

@@ -249,7 +249,7 @@ void FullFrameExecutionModel::get_output_render_area(NodeOperation *output_op, r
     /* Get border with normalized coordinates. */
     const rctf *norm_border = has_viewer_border ? border_.viewer_border : border_.render_border;
 
-    /* Return de-normalized border within canvas. */
+    /* Return denormalized border within canvas. */
     const int w = output_op->get_width();
     const int h = output_op->get_height();
     r_area.xmin = canvas.xmin + norm_border->xmin * w;

source/blender/gpu/metal/mtl_framebuffer.mm

@@ -78,7 +78,7 @@ MTLFrameBuffer::~MTLFrameBuffer()
     }
   }
 
-  /* Free colour attachment descriptors. */
+  /* Free color attachment descriptors. */
   for (int i = 0; i < GPU_FB_MAX_COLOR_ATTACHMENT; i++) {
     if (colour_attachment_descriptors_[i] != nil) {
       [colour_attachment_descriptors_[i] release];
@@ -717,7 +717,7 @@ void MTLFrameBuffer::update_attachments(bool /*update_viewport*/)
       case GPU_FB_COLOR_ATTACHMENT5: {
         int color_slot_ind = type - GPU_FB_COLOR_ATTACHMENT0;
         if (attach.tex) {
-          /* If we already had a colour attachment, preserve load/clear-state parameters,
+          /* If we already had a color attachment, preserve load/clear-state parameters,
            * but remove existing and add new attachment. */
           if (this->has_attachment_at_slot(color_slot_ind)) {
             MTLAttachment color_attachment_prev = this->get_color_attachment(color_slot_ind);
@@ -1696,7 +1696,7 @@ MTLRenderPassDescriptor *MTLFrameBuffer::bake_render_pass_descriptor(bool load_c
                                                             atIndexedSubscript:attachment_ind];
       }
       else {
-        /* Disable colour attachment. */
+        /* Disable color attachment. */
         [framebuffer_descriptor_[descriptor_config].colorAttachments setObject:nil
                                                             atIndexedSubscript:attachment_ind];
       }

source/blender/sequencer/intern/effects.cc

@@ -3257,8 +3257,8 @@ void SEQ_effect_text_font_load(TextVars *data, const bool do_id_user)
        * This code can be called from non-main thread, e.g. when copying sequences as part of
        * depsgraph CoW copy of the evaluated scene. Just skip font loading in that case, BLF code
        * is not thread-safe, and if this happens from threaded context, it almost certainly means
-       * that a previous atempt to load the font already failed, e.g. because font filepath is
-       * invalid. Propoer fix would likely be to not attempt to reload a failed-to-load font every
+       * that a previous attempt to load the font already failed, e.g. because font file-path is
+       * invalid. Proposer fix would likely be to not attempt to reload a failed-to-load font every
        * time. */
       BLI_path_abs(filepath, ID_BLEND_PATH_FROM_GLOBAL(&vfont->id));
 

source/blender/windowmanager/intern/wm_operators.cc

@@ -1474,8 +1474,8 @@ static uiBlock *wm_block_dialog_create(bContext *C, ARegion *region, void *user_
   UI_block_flag_disable(block, UI_BLOCK_LOOP);
   UI_block_theme_style_set(block, UI_BLOCK_THEME_STYLE_REGULAR);
 
-  /* intentionally don't use 'UI_BLOCK_MOVEMOUSE_QUIT', some dialogues have many items
-   * where quitting by accident is very annoying */
+  /* Intentionally don't use #UI_BLOCK_MOVEMOUSE_QUIT, some dialogs have many items
+   * where quitting by accident is very annoying. */
   UI_block_flag_enable(block, UI_BLOCK_KEEP_OPEN | UI_BLOCK_NUMSELECT);
 
   uiLayout *layout = UI_block_layout(

source/blender/windowmanager/intern/wm_playanim.cc

@@ -2145,7 +2145,7 @@ static bool wm_main_playanim_intern(int argc, const char **argv, PlayArgs *args_
   BLF_exit();
 
   /* NOTE: Must happen before GPU Context destruction as GPU resources are released via
-   * Colour Management module. */
+   * Color Management module. */
   IMB_exit();
 
   if (ps.ghost_data.gpu_context) {

tools/check_source/check_spelling_config.py

@@ -107,7 +107,9 @@ dict_custom = {
     "denoised",
     "denoiser",
     "denoising",
+    "denormal",
     "denormalized",
+    "denormals",
     "dereference",
     "dereferenced",
     "dereferences",