Cleanup: spelling in comments

46 files changed, 102 insertions, 102 deletions

diff --git a/intern/cycles/blender/blender_gpu_display.cpp b/intern/cycles/blender/blender_gpu_display.cpp
index a79232af71f..aa2a9c17a8a 100644
--- a/intern/cycles/blender/blender_gpu_display.cpp
+++ b/intern/cycles/blender/blender_gpu_display.cpp
@@ -338,9 +338,9 @@ bool BlenderGPUDisplay::do_update_begin(const GPUDisplayParams &params,
    * NOTE: Allocate the PBO for the the size which will fit the final render resolution (as in,
    * at a resolution divider 1. This was we don't need to recreate graphics interoperability
    * objects which are costly and which are tied to the specific underlying buffer size.
-   * The downside of this approach is that when graphics interopeability is not used we are sending
-   * too much data to GPU when resolution divider is not 1. */
-  /* TODO(sergey): Investigate whether keeping the PBO exact size of the texute makes non-interop
+   * The downside of this approach is that when graphics interoperability is not used we are
+   * sending too much data to GPU when resolution divider is not 1. */
+  /* TODO(sergey): Investigate whether keeping the PBO exact size of the texture makes non-interop
    * mode faster. */
   const int buffer_width = params.full_size.x;
   const int buffer_height = params.full_size.y;
diff --git a/intern/cycles/blender/blender_gpu_display.h b/intern/cycles/blender/blender_gpu_display.h
index b7eddf0afa7..1014c96cee4 100644
--- a/intern/cycles/blender/blender_gpu_display.h
+++ b/intern/cycles/blender/blender_gpu_display.h
@@ -134,7 +134,7 @@ class BlenderGPUDisplay : public GPUDisplay {
   /* Make sure texture is allocated and its initial configuration is performed. */
   bool gl_texture_resources_ensure();
 
-  /* Ensure all runtime GPU resources needefd for drawing are allocated.
+  /* Ensure all runtime GPU resources needed for drawing are allocated.
    * Returns true if all resources needed for drawing are available. */
   bool gl_draw_resources_ensure();
 
@@ -146,7 +146,7 @@ class BlenderGPUDisplay : public GPUDisplay {
    * NOTE: The texture needs to be bound. */
   void texture_update_if_needed();
 
-  /* Update vetrex buffer with new coordinates of vertex positions and texture coordinates.
+  /* Update vertex buffer with new coordinates of vertex positions and texture coordinates.
    * This buffer is used to render texture in the viewport.
    *
    * NOTE: The buffer needs to be bound. */
@@ -200,7 +200,7 @@ class BlenderGPUDisplay : public GPUDisplay {
   bool gl_draw_resource_creation_attempted_ = false;
   bool gl_draw_resources_created_ = false;
 
-  /* Vertex buffer which hold vertrices of a triangle fan which is textures with the texture
+  /* Vertex buffer which hold vertices of a triangle fan which is textures with the texture
    * holding the render result. */
   uint vertex_buffer_ = 0;
 
diff --git a/intern/cycles/device/cpu/kernel.cpp b/intern/cycles/device/cpu/kernel.cpp
index 0ab58ff8600..91282390e27 100644
--- a/intern/cycles/device/cpu/kernel.cpp
+++ b/intern/cycles/device/cpu/kernel.cpp
@@ -44,7 +44,7 @@ CPUKernels::CPUKernels()
       /* Shader evaluation. */
       REGISTER_KERNEL(shader_eval_displace),
       REGISTER_KERNEL(shader_eval_background),
-      /* Adaptive campling. */
+      /* Adaptive sampling. */
       REGISTER_KERNEL(adaptive_sampling_convergence_check),
       REGISTER_KERNEL(adaptive_sampling_filter_x),
       REGISTER_KERNEL(adaptive_sampling_filter_y),
diff --git a/intern/cycles/device/cuda/kernel.cpp b/intern/cycles/device/cuda/kernel.cpp
index 0ed20ddf8e6..a4a7bfabce0 100644
--- a/intern/cycles/device/cuda/kernel.cpp
+++ b/intern/cycles/device/cuda/kernel.cpp
@@ -28,7 +28,7 @@ void CUDADeviceKernels::load(CUDADevice *device)
   for (int i = 0; i < (int)DEVICE_KERNEL_NUM; i++) {
     CUDADeviceKernel &kernel = kernels_[i];
 
-    /* No megakernel used for GPU. */
+    /* No mega-kernel used for GPU. */
     if (i == DEVICE_KERNEL_INTEGRATOR_MEGAKERNEL) {
       continue;
     }
diff --git a/intern/cycles/device/device.h b/intern/cycles/device/device.h
index 02b6edb56d0..399d5eb91df 100644
--- a/intern/cycles/device/device.h
+++ b/intern/cycles/device/device.h
@@ -213,7 +213,7 @@ class Device {
    * The interoperability comes here by the meaning that the device is capable of computing result
    * directly into an OpenGL (or other graphics library) buffer. */
 
-  /* Check display si to be updated using graphics interoperability.
+  /* Check display is to be updated using graphics interoperability.
    * The interoperability can not be used is it is not supported by the device. But the device
    * might also force disable the interoperability if it detects that it will be slower than
    * copying pixels from the render buffer. */
diff --git a/intern/cycles/device/device_denoise.h b/intern/cycles/device/device_denoise.h
index 02ee63fb0ad..dfdc7cc87b3 100644
--- a/intern/cycles/device/device_denoise.h
+++ b/intern/cycles/device/device_denoise.h
@@ -68,7 +68,7 @@ class DenoiseParams : public Node {
   /* Viewport start sample. */
   int start_sample = 0;
 
-  /* Auxiliry passes. */
+  /* Auxiliary passes. */
   bool use_pass_albedo = true;
   bool use_pass_normal = true;
 
diff --git a/intern/cycles/device/optix/device_impl.cpp b/intern/cycles/device/optix/device_impl.cpp
index cd16b8c9f01..b54d423a183 100644
--- a/intern/cycles/device/optix/device_impl.cpp
+++ b/intern/cycles/device/optix/device_impl.cpp
@@ -571,7 +571,7 @@ class OptiXDevice::DenoiseContext {
     int pass_stride = -1;
   } guiding_params;
 
-  /* Number of input passes. Including the color and extra auxillary passes. */
+  /* Number of input passes. Including the color and extra auxiliary passes. */
   int num_input_passes = 0;
   bool use_pass_albedo = false;
   bool use_pass_normal = false;
@@ -956,7 +956,7 @@ bool OptiXDevice::denoise_run(DenoiseContext &context, const DenoisePass &pass)
   /* Denoise in-place of the noisy input in the render buffers. */
   output_layer = color_layer;
 
-  /* Finally run denonising. */
+  /* Finally run denoising. */
   OptixDenoiserParams params = {}; /* All parameters are disabled/zero. */
   OptixDenoiserLayer image_layers = {};
   image_layers.input = color_layer;
diff --git a/intern/cycles/device/optix/device_impl.h b/intern/cycles/device/optix/device_impl.h
index 742ae0f1bab..91ef52e0a5a 100644
--- a/intern/cycles/device/optix/device_impl.h
+++ b/intern/cycles/device/optix/device_impl.h
@@ -146,7 +146,7 @@ class OptiXDevice : public CUDADevice {
   /* Read guiding passes from the render buffers, preprocess them in a way which is expected by
    * OptiX and store in the guiding passes memory within the given context.
    *
-   * Pre=-processing of the guiding passes is to only hapopen once per context lifetime. DO not
+   * Pre=-processing of the guiding passes is to only happen once per context lifetime. DO not
    * preprocess them for every pass which is being denoised. */
   bool denoise_filter_guiding_preprocess(DenoiseContext &context);
 
diff --git a/intern/cycles/integrator/denoiser.h b/intern/cycles/integrator/denoiser.h
index 3101b45e31b..b02bcbeb046 100644
--- a/intern/cycles/integrator/denoiser.h
+++ b/intern/cycles/integrator/denoiser.h
@@ -33,7 +33,7 @@ class Progress;
 
 /* Implementation of a specific denoising algorithm.
  *
- * This class takes care of breaking down denosiing algorithm into a series of device calls or to
+ * This class takes care of breaking down denoising algorithm into a series of device calls or to
  * calls of an external API to denoise given input.
  *
  * TODO(sergey): Are we better with device or a queue here? */
@@ -53,7 +53,7 @@ class Denoiser {
   const DenoiseParams &get_params() const;
 
   /* Create devices and load kernels needed for denoising.
-   * The progress is used to communicate state when kenrels actually needs to be loaded.
+   * The progress is used to communicate state when kernels actually needs to be loaded.
    *
    * NOTE: The `progress` is an optional argument, can be nullptr. */
   virtual bool load_kernels(Progress *progress);
@@ -64,7 +64,7 @@ class Denoiser {
    * a lower resolution render into a bigger allocated buffer, which is used in viewport during
    * navigation and non-unit pixel size. Use that instead of render_buffers->params.
    *
-   * The buffer might be copming from a "foreign" device from what this denoise is created for.
+   * The buffer might be coming from a "foreign" device from what this denoise is created for.
    * This means that in general case the denoiser will make sure the input data is available on
    * the denoiser device, perform denoising, and put data back to the device where the buffer
    * came from.
@@ -95,8 +95,8 @@ class Denoiser {
    *   using OptiX denoiser and rendering on CPU.
    *
    * - No threading safety is ensured in this call. This means, that it is up to caller to ensure
-   *   that there is no threadingconflict between denoising task lazily initializing the device and
-   *   access to this device happen. */
+   *   that there is no threading-conflict between denoising task lazily initializing the device
+   *   and access to this device happen. */
   Device *get_denoiser_device() const;
 
   function<bool(void)> is_cancelled_cb;
diff --git a/intern/cycles/integrator/denoiser_device.cpp b/intern/cycles/integrator/denoiser_device.cpp
index 8088cfd7800..e8361c50f2f 100644
--- a/intern/cycles/integrator/denoiser_device.cpp
+++ b/intern/cycles/integrator/denoiser_device.cpp
@@ -77,7 +77,7 @@ bool DeviceDenoiser::denoise_buffer(const BufferParams &buffer_params,
     local_render_buffers.reset(buffer_params);
 
     /* NOTE: The local buffer is allocated for an exact size of the effective render size, while
-     * the input render buffer is allcoated for the lowest resolution divider possible. So it is
+     * the input render buffer is allocated for the lowest resolution divider possible. So it is
      * important to only copy actually needed part of the input buffer. */
     memcpy(local_render_buffers.buffer.data(),
            render_buffers->buffer.data(),
diff --git a/intern/cycles/integrator/denoiser_oidn.cpp b/intern/cycles/integrator/denoiser_oidn.cpp
index 1b5a012ec87..7fc2b2b1892 100644
--- a/intern/cycles/integrator/denoiser_oidn.cpp
+++ b/intern/cycles/integrator/denoiser_oidn.cpp
@@ -93,7 +93,7 @@ class OIDNPass {
    * Is required for albedo and normal passes. The color pass OIDN will perform auto-exposure, so
    * scaling is not needed for the color pass unless adaptive sampling is used.
    *
-   * NOTE: Do not scale the outout pass, as that requires to be a pointer in the original buffer.
+   * NOTE: Do not scale the output pass, as that requires to be a pointer in the original buffer.
    * All the scaling on the output needed for integration with adaptive sampling will happen
    * outside of generic pass handling. */
   bool need_scale = false;
@@ -479,7 +479,7 @@ class OIDNDenoiseContext {
     }
 
     if (num_samples_ == 1) {
-      /* If the avoid scaling if there is only one sample, to save up time (so we dont divide
+      /* If the avoid scaling if there is only one sample, to save up time (so we don't divide
        * buffer by 1). */
       return false;
     }
diff --git a/intern/cycles/integrator/path_trace.cpp b/intern/cycles/integrator/path_trace.cpp
index 6c02316ac2b..bc43747718d 100644
--- a/intern/cycles/integrator/path_trace.cpp
+++ b/intern/cycles/integrator/path_trace.cpp
@@ -177,7 +177,7 @@ void PathTrace::render(const RenderWork &render_work)
 
 void PathTrace::render_pipeline(RenderWork render_work)
 {
-  /* NOTE: Only check for "instant" cancel here. Ther user-requested cancel via progress is
+  /* NOTE: Only check for "instant" cancel here. The user-requested cancel via progress is
    * checked in Session and the work in the event of cancel is to be finished here. */
 
   render_scheduler_.set_need_schedule_cryptomatte(device_scene_->data.film.cryptomatte_passes !=
@@ -680,7 +680,7 @@ void PathTrace::write_tile_buffer(const RenderWork &render_work)
    *
    * Tiles are written to a file during rendering, and written to the software at the end
    * of rendering (wither when all tiles are finished, or when rendering was requested to be
-   * cancelled).
+   * canceled).
    *
    * Important thing is: tile should be written to the software via callback only once. */
   if (!has_multiple_tiles) {
@@ -913,7 +913,7 @@ void PathTrace::process_full_buffer_from_disk(string_view filename)
      *    ensure proper denoiser is used. */
     set_denoiser_params(denoise_params);
 
-    /* Number of samples doesn't matter too much, since the sampels count pass will be used. */
+    /* Number of samples doesn't matter too much, since the samples count pass will be used. */
     denoiser_->denoise_buffer(full_frame_buffers.params, &full_frame_buffers, 0, false);
 
     render_state_.has_denoised_result = true;
diff --git a/intern/cycles/integrator/path_trace.h b/intern/cycles/integrator/path_trace.h
index 78ca68c1198..fc7713e6df9 100644
--- a/intern/cycles/integrator/path_trace.h
+++ b/intern/cycles/integrator/path_trace.h
@@ -83,7 +83,7 @@ class PathTrace {
   void set_progress(Progress *progress);
 
   /* NOTE: This is a blocking call. Meaning, it will not return until given number of samples are
-   * rendered (or until rendering is requested to be cancelled). */
+   * rendered (or until rendering is requested to be canceled). */
   void render(const RenderWork &render_work);
 
   /* TODO(sergey): Decide whether denoiser is really a part of path tracer. Currently it is
@@ -110,7 +110,7 @@ class PathTrace {
   /* Cancel rendering process as soon as possible, without waiting for full tile to be sampled.
    * Used in cases like reset of render session.
    *
-   * This is a blockign call, which returns as soon as there is no running `render_samples()` call.
+   * This is a blocking call, which returns as soon as there is no running `render_samples()` call.
    */
   void cancel();
 
@@ -120,11 +120,11 @@ class PathTrace {
    * the data will be copied to the device of the given render buffers. */
   void copy_to_render_buffers(RenderBuffers *render_buffers);
 
-  /* Copy happens via CPU side buffer: data will be copied from the device of the given rendetr
+  /* Copy happens via CPU side buffer: data will be copied from the device of the given render
    * buffers and will be copied to all devices of the path trace. */
   void copy_from_render_buffers(RenderBuffers *render_buffers);
 
-  /* Copy render buffers of the big tile from the device to hsot.
+  /* Copy render buffers of the big tile from the device to host.
    * Return true if all copies are successful. */
   bool copy_render_tile_from_device();
 
@@ -172,10 +172,10 @@ class PathTrace {
    * Is called during path tracing to communicate work-in-progress state of the final buffer. */
   function<void(void)> tile_buffer_update_cb;
 
-  /* Callback which communicates final rendered buffer. Is called after pathtracing is done. */
+  /* Callback which communicates final rendered buffer. Is called after path-tracing is done. */
   function<void(void)> tile_buffer_write_cb;
 
-  /* Callback which initializes rendered buffer. Is called before pathtracing starts.
+  /* Callback which initializes rendered buffer. Is called before path-tracing starts.
    *
    * This is used for baking. */
   function<bool(void)> tile_buffer_read_cb;
@@ -189,7 +189,7 @@ class PathTrace {
 
  protected:
   /* Actual implementation of the rendering pipeline.
-   * Calls steps in order, checking for the cancel to be requested inbetween.
+   * Calls steps in order, checking for the cancel to be requested in between.
    *
    * Is separate from `render()` to simplify dealing with the early outputs and keeping
    * `render_cancel_` in the consistent state. */
@@ -283,7 +283,7 @@ class PathTrace {
      * affects both resolution and stride as visible by the integrator kernels. */
     int resolution_divider = 0;
 
-    /* Paramaters of the big tile with the current resolution divider applied. */
+    /* Parameters of the big tile with the current resolution divider applied. */
     BufferParams effective_big_tile_params;
 
     /* Denosier was run and there are denoised versions of the passes in the render buffers. */
diff --git a/intern/cycles/integrator/path_trace_work.h b/intern/cycles/integrator/path_trace_work.h
index 97b97f3d888..8c9c8811199 100644
--- a/intern/cycles/integrator/path_trace_work.h
+++ b/intern/cycles/integrator/path_trace_work.h
@@ -39,8 +39,8 @@ class PathTraceWork {
 
   /* Create path trace work which fits best the device.
    *
-   * The cancel request flag is used for a cheap check whether cancel is to berformed as soon as
-   * possible. This could be, for rexample, request to cancel rendering on camera navigation in
+   * The cancel request flag is used for a cheap check whether cancel is to be performed as soon as
+   * possible. This could be, for example, request to cancel rendering on camera navigation in
    * viewport. */
   static unique_ptr<PathTraceWork> create(Device *device,
                                           Film *film,
@@ -107,7 +107,7 @@ class PathTraceWork {
   /* Special version of the `copy_from_render_buffers()` which only copies denosied passes from the
    * given render buffers, leaving rest of the passes.
    *
-   * Same notes about device copying aplies to this call as well. */
+   * Same notes about device copying applies to this call as well. */
   void copy_from_denoised_render_buffers(const RenderBuffers *render_buffers);
 
   /* Copy render buffers to/from device using an appropriate device queue when needed so that
@@ -119,7 +119,7 @@ class PathTraceWork {
    * things are executed in order with the `render_samples()`. */
   virtual bool zero_render_buffers() = 0;
 
-  /* Access pixels rendered by this work and copy them to the coresponding location in the
+  /* Access pixels rendered by this work and copy them to the corresponding location in the
    * destination.
    *
    * NOTE: Does not perform copy of buffers from the device. Use `copy_render_tile_from_device()`
@@ -182,7 +182,7 @@ class PathTraceWork {
   unique_ptr<RenderBuffers> buffers_;
 
   /* Effective parameters of the full, big tile, and current work render buffer.
-   * The latter might be different from buffers_->params when there is a resolution divider
+   * The latter might be different from `buffers_->params` when there is a resolution divider
    * involved. */
   BufferParams effective_full_params_;
   BufferParams effective_big_tile_params_;
diff --git a/intern/cycles/integrator/path_trace_work_gpu.cpp b/intern/cycles/integrator/path_trace_work_gpu.cpp
index 10baf869aa6..135466becc6 100644
--- a/intern/cycles/integrator/path_trace_work_gpu.cpp
+++ b/intern/cycles/integrator/path_trace_work_gpu.cpp
@@ -498,7 +498,7 @@ void PathTraceWorkGPU::compact_states(const int num_active_paths)
 bool PathTraceWorkGPU::enqueue_work_tiles(bool &finished)
 {
   /* If there are existing paths wait them to go to intersect closest kernel, which will align the
-   * wavefront of the existing and newely added paths. */
+   * wavefront of the existing and newly added paths. */
   /* TODO: Check whether counting new intersection kernels here will have positive affect on the
    * performance. */
   const DeviceKernel kernel = get_most_queued_kernel();
@@ -508,7 +508,7 @@ bool PathTraceWorkGPU::enqueue_work_tiles(bool &finished)
 
   int num_active_paths = get_num_active_paths();
 
-  /* Don't schedule more work if cancelling. */
+  /* Don't schedule more work if canceling. */
   if (is_cancel_requested()) {
     if (num_active_paths == 0) {
       finished = true;
@@ -729,7 +729,7 @@ void PathTraceWorkGPU::copy_to_gpu_display_naive(GPUDisplay *gpu_display,
       gpu_display_rgba_half_.data_height != final_height) {
     gpu_display_rgba_half_.alloc(final_width, final_height);
     /* TODO(sergey): There should be a way to make sure device-side memory is allocated without
-     * transfering zeroes to the device. */
+     * transferring zeroes to the device. */
     queue_->zero_to_device(gpu_display_rgba_half_);
   }
 
diff --git a/intern/cycles/integrator/render_scheduler.cpp b/intern/cycles/integrator/render_scheduler.cpp
index 4eb1dd941f9..3e5b3417a6a 100644
--- a/intern/cycles/integrator/render_scheduler.cpp
+++ b/intern/cycles/integrator/render_scheduler.cpp
@@ -233,7 +233,7 @@ void RenderScheduler::render_work_reschedule_on_cancel(RenderWork &render_work)
 
   const bool has_rendered_samples = get_num_rendered_samples() != 0;
 
-  /* Reset all fields of the previous work, canelling things like adaptive sampling filtering and
+  /* Reset all fields of the previous work, canceling things like adaptive sampling filtering and
    * denoising.
    * However, need to preserve write requests, since those will not be possible to recover and
    * writes are only to happen once. */
@@ -246,7 +246,7 @@ void RenderScheduler::render_work_reschedule_on_cancel(RenderWork &render_work)
   render_work.full.write = full_write;
 
   /* Do not write tile if it has zero samples it it, treat it similarly to all other tiles which
-   * got cancelled. */
+   * got canceled. */
   if (!state_.tile_result_was_written && has_rendered_samples) {
     render_work.tile.write = true;
   }
@@ -817,7 +817,7 @@ int RenderScheduler::get_num_samples_to_path_trace() const
 
   int num_samples_to_render = min(num_samples_pot, max_num_samples_to_render);
 
-  /* When enough statistics is available and doing an offlien rendering prefer to keep device
+  /* When enough statistics is available and doing an offline rendering prefer to keep device
    * occupied. */
   if (state_.occupancy_num_samples && (background_ || headless_)) {
     /* Keep occupancy at about 0.5 (this is more of an empirical figure which seems to match scenes
@@ -874,7 +874,7 @@ int RenderScheduler::get_num_samples_during_navigation(int resolution_divider) c
 
   /* Always render 4 samples, even if scene is configured for less.
    * The idea here is to have enough information on the screen. Resolution divider of 2 allows us
-   * to have 4 time extra samples, so verall worst case timing is the same as the final resolution
+   * to have 4 time extra samples, so overall worst case timing is the same as the final resolution
    * at one sample. */
   return 4;
 }
diff --git a/intern/cycles/integrator/render_scheduler.h b/intern/cycles/integrator/render_scheduler.h
index 9c2d107e46d..b7b598fb10c 100644
--- a/intern/cycles/integrator/render_scheduler.h
+++ b/intern/cycles/integrator/render_scheduler.h
@@ -83,7 +83,7 @@ class RenderWork {
   } display;
 
   /* Re-balance multi-device scheduling after rendering this work.
-   * Note that the scheduler does not know anything abouce devices, so if there is only a single
+   * Note that the scheduler does not know anything about devices, so if there is only a single
    * device used, then it is up for the PathTracer to ignore the balancing. */
   bool rebalance = false;
 
@@ -203,7 +203,7 @@ class RenderScheduler {
    * extra work needs to be scheduled to denoise and write final result. */
   bool done() const;
 
-  /* Update scheduling state for a newely scheduled work.
+  /* Update scheduling state for a newly scheduled work.
    * Takes care of things like checking whether work was ever denoised, tile was written and states
    * like that. */
   void update_state_for_render_work(const RenderWork &render_work);
@@ -235,7 +235,7 @@ class RenderScheduler {
   double guess_display_update_interval_in_seconds_for_num_samples_no_limit(
       int num_rendered_samples) const;
 
-  /* Calculate number of samples which can be rendered within current desred update interval which
+  /* Calculate number of samples which can be rendered within current desired update interval which
    * is calculated by `guess_update_interval_in_seconds()`. */
   int calculate_num_samples_per_update() const;
 
@@ -250,11 +250,11 @@ class RenderScheduler {
   /* Whether adaptive sampling convergence check and filter is to happen. */
   bool work_need_adaptive_filter() const;
 
-  /* Calculate thretshold for adaptive sampling. */
+  /* Calculate threshold for adaptive sampling. */
   float work_adaptive_threshold() const;
 
   /* Check whether current work needs denoising.
-   * Denoising is not needed if the denoiser is not configured, or when denosiing is happening too
+   * Denoising is not needed if the denoiser is not configured, or when denoising is happening too
    * often.
    *
    * The delayed will be true when the denoiser is configured for use, but it was delayed for a
diff --git a/intern/cycles/integrator/shader_eval.cpp b/intern/cycles/integrator/shader_eval.cpp
index 465b4a8d4da..d35ff4cd03f 100644
--- a/intern/cycles/integrator/shader_eval.cpp
+++ b/intern/cycles/integrator/shader_eval.cpp
@@ -71,7 +71,7 @@ bool ShaderEval::eval(const ShaderEvalType type,
     success = (device->info.type == DEVICE_CPU) ? eval_cpu(device, type, input, output) :
                                                   eval_gpu(device, type, input, output);
 
-    /* Copy data back from device if not cancelled. */
+    /* Copy data back from device if not canceled. */
     if (success) {
       output.copy_from_device(0, 1, output.size());
       read_output(output);
diff --git a/intern/cycles/integrator/work_balancer.h b/intern/cycles/integrator/work_balancer.h
index 94e20ecf054..fc5e561845e 100644
--- a/intern/cycles/integrator/work_balancer.h
+++ b/intern/cycles/integrator/work_balancer.h
@@ -32,7 +32,7 @@ struct WorkBalanceInfo {
   double weight = 1.0;
 };
 
-/* Balance work for an initial render interation, before any statistics is known. */
+/* Balance work for an initial render integration, before any statistics is known. */
 void work_balance_do_initial(vector<WorkBalanceInfo> &work_balance_infos);
 
 /* Rebalance work after statistics has been accumulated.
diff --git a/intern/cycles/integrator/work_tile_scheduler.cpp b/intern/cycles/integrator/work_tile_scheduler.cpp
index 3fc99d5b74d..e6ada2f46ee 100644
--- a/intern/cycles/integrator/work_tile_scheduler.cpp
+++ b/intern/cycles/integrator/work_tile_scheduler.cpp
@@ -81,7 +81,7 @@ void WorkTileScheduler::reset_scheduler_state()
 bool WorkTileScheduler::get_work(KernelWorkTile *work_tile_, const int max_work_size)
 {
   /* Note that the `max_work_size` can be higher than the `max_num_path_states_`: this is because
-   * the path trace work can decice to use smaller tile sizes and greedily schedule multiple tiles,
+   * the path trace work can decide to use smaller tile sizes and greedily schedule multiple tiles,
    * improving overall device occupancy.
    * So the `max_num_path_states_` is a "scheduling unit", and the `max_work_size` is a "scheduling
    * limit". */
diff --git a/intern/cycles/integrator/work_tile_scheduler.h b/intern/cycles/integrator/work_tile_scheduler.h
index e4c8f701259..85f11b601c7 100644
--- a/intern/cycles/integrator/work_tile_scheduler.h
+++ b/intern/cycles/integrator/work_tile_scheduler.h
@@ -64,7 +64,7 @@ class WorkTileScheduler {
   /* dimensions of the currently rendering image in pixels. */
   int2 image_size_px_ = make_int2(0, 0);
 
-  /* Offset and stride of the buffer within which scheduing is happenning.
+  /* Offset and stride of the buffer within which scheduling is happening.
    * Will be passed over to the KernelWorkTile. */
   int offset_, stride_;
 
@@ -87,7 +87,7 @@ class WorkTileScheduler {
    * in the `get_work()`? */
   int total_tiles_num_ = 0;
 
-  /* In the case when the number of sam[les in the `tile_size_` is lower than samples_num_ denotes
+  /* In the case when the number of samples in the `tile_size_` is lower than samples_num_ denotes
    * how many tiles are to be "stacked" to cover the entire requested range of samples. */
   int num_tiles_per_sample_range_ = 0;
 
diff --git a/intern/cycles/kernel/closure/bssrdf.h b/intern/cycles/kernel/closure/bssrdf.h
index 0f9278bba89..e095314678a 100644
--- a/intern/cycles/kernel/closure/bssrdf.h
+++ b/intern/cycles/kernel/closure/bssrdf.h
@@ -76,7 +76,7 @@ ccl_device void bssrdf_setup_radius(Bssrdf *bssrdf, const ClosureType type, cons
     const float inv_eta = 1.0f / eta;
     const float F_dr = inv_eta * (-1.440f * inv_eta + 0.710f) + 0.668f + 0.0636f * eta;
     const float fourthirdA = (4.0f / 3.0f) * (1.0f + F_dr) /
-                             (1.0f - F_dr); /* From Jensen's Fdr ratio formula. */
+                             (1.0f - F_dr); /* From Jensen's `Fdr` ratio formula. */
 
     const float3 alpha_prime = make_float3(
         bssrdf_dipole_compute_alpha_prime(bssrdf->albedo.x, fourthirdA),
diff --git a/intern/cycles/kernel/device/cuda/compat.h b/intern/cycles/kernel/device/cuda/compat.h
index 665da43e1a1..3c85a8e7bd2 100644
--- a/intern/cycles/kernel/device/cuda/compat.h
+++ b/intern/cycles/kernel/device/cuda/compat.h
@@ -80,7 +80,7 @@ typedef unsigned long long uint64_t;
 #define ccl_gpu_global_id_x() (ccl_gpu_block_idx_x * ccl_gpu_block_dim_x + ccl_gpu_thread_idx_x)
 #define ccl_gpu_global_size_x() (ccl_gpu_grid_dim_x * ccl_gpu_block_dim_x)
 
-/* GPU warp synchronizaton */
+/* GPU warp synchronization. */
 
 #define ccl_gpu_syncthreads() __syncthreads()
 #define ccl_gpu_ballot(predicate) __ballot_sync(0xFFFFFFFF, predicate)
diff --git a/intern/cycles/kernel/device/optix/compat.h b/intern/cycles/kernel/device/optix/compat.h
index 4e255a135c6..fb9e094b535 100644
--- a/intern/cycles/kernel/device/optix/compat.h
+++ b/intern/cycles/kernel/device/optix/compat.h
@@ -81,7 +81,7 @@ typedef unsigned long long uint64_t;
 #define ccl_gpu_global_id_x() (ccl_gpu_block_idx_x * ccl_gpu_block_dim_x + ccl_gpu_thread_idx_x)
 #define ccl_gpu_global_size_x() (ccl_gpu_grid_dim_x * ccl_gpu_block_dim_x)
 
-/* GPU warp synchronizaton */
+/* GPU warp synchronization. */
 
 #define ccl_gpu_syncthreads() __syncthreads()
 #define ccl_gpu_ballot(predicate) __ballot_sync(0xFFFFFFFF, predicate)
diff --git a/intern/cycles/kernel/integrator/integrator_shade_volume.h b/intern/cycles/kernel/integrator/integrator_shade_volume.h
index 4a864b1e6ce..d44890f800e 100644
--- a/intern/cycles/kernel/integrator/integrator_shade_volume.h
+++ b/intern/cycles/kernel/integrator/integrator_shade_volume.h
@@ -30,7 +30,7 @@ CCL_NAMESPACE_BEGIN
 
 #ifdef __VOLUME__
 
-/* Events for probalistic scattering */
+/* Events for probabilistic scattering. */
 
 typedef enum VolumeIntegrateEvent {
   VOLUME_PATH_SCATTERED = 0,
@@ -228,8 +228,8 @@ ccl_device void volume_shadow_heterogeneous(INTEGRATOR_STATE_ARGS,
     /* compute attenuation over segment */
     sd->P = new_P;
     if (shadow_volume_shader_sample(INTEGRATOR_STATE_PASS, sd, &sigma_t)) {
-      /* Compute expf() only for every Nth step, to save some calculations
-       * because exp(a)*exp(b) = exp(a+b), also do a quick VOLUME_THROUGHPUT_EPSILON
+      /* Compute `expf()` only for every Nth step, to save some calculations
+       * because `exp(a)*exp(b) = exp(a+b)`, also do a quick #VOLUME_THROUGHPUT_EPSILON
        * check then. */
       sum += (-sigma_t * dt);
       if ((i & 0x07) == 0) { /* ToDo: Other interval? */
@@ -648,7 +648,7 @@ ccl_device_forceinline void volume_integrate_heterogeneous(
     }
   }
 
-  /* Write accumulated emisison. */
+  /* Write accumulated emission. */
   if (!is_zero(accum_emission)) {
     kernel_accum_emission(
         INTEGRATOR_STATE_PASS, result.indirect_throughput, accum_emission, render_buffer);
diff --git a/intern/cycles/kernel/integrator/integrator_state.h b/intern/cycles/kernel/integrator/integrator_state.h
index 8cef9cf31e2..094446be02c 100644
--- a/intern/cycles/kernel/integrator/integrator_state.h
+++ b/intern/cycles/kernel/integrator/integrator_state.h
@@ -44,7 +44,7 @@
  * INTEGRATOR_STATE_PASS_NULL: use to pass empty state to other functions.
  *
  * NOTE: if we end up with a device that passes no arguments, the leading comma will be a problem.
- * Can solve it with more macros if we encouter it, but rather ugly so postpone for now.
+ * Can solve it with more macros if we encounter it, but rather ugly so postpone for now.
  */
 
 #include "kernel/kernel_types.h"
@@ -129,7 +129,7 @@ typedef struct IntegratorStateGPU {
  *
  * Note that there is a special access function for the shadow catcher state. This access is to
  * happen from a kernel which operates on a "main" path. Attempt to use shadow catcher accessors
- * from a kernel which operates on a shadow catcher state will cause bad memory acces. */
+ * from a kernel which operates on a shadow catcher state will cause bad memory access. */
 
 #ifdef __KERNEL_CPU__
 
diff --git a/intern/cycles/kernel/kernel_adaptive_sampling.h b/intern/cycles/kernel/kernel_adaptive_sampling.h
index 2bee12f0473..7d71907effe 100644
--- a/intern/cycles/kernel/kernel_adaptive_sampling.h
+++ b/intern/cycles/kernel/kernel_adaptive_sampling.h
@@ -60,7 +60,7 @@ ccl_device bool kernel_adaptive_sampling_convergence_check(const KernelGlobals *
 
   const float4 A = kernel_read_pass_float4(buffer + kernel_data.film.pass_adaptive_aux_buffer);
   if (!reset && A.w != 0.0f) {
-    /* If the pixel was considered converged, its state will not change in this kernmel. Early
+    /* If the pixel was considered converged, its state will not change in this kernel. Early
      * output before doing any math.
      *
      * TODO(sergey): On a GPU it might be better to keep thread alive for better coherency? */
diff --git a/intern/cycles/kernel/kernel_film.h b/intern/cycles/kernel/kernel_film.h
index fa93f4830d1..715d764fb31 100644
--- a/intern/cycles/kernel/kernel_film.h
+++ b/intern/cycles/kernel/kernel_film.h
@@ -393,7 +393,7 @@ film_calculate_shadow_catcher(const KernelFilmConvert *ccl_restrict kfilm_conver
   ccl_global const float *in_catcher = buffer + kfilm_convert->pass_shadow_catcher;
 
   /* NOTE: It is possible that the Shadow Catcher pass is requested as an output without actual
-   * shadow catcher objects in the scene. In this case there will be no auxillary passes required
+   * shadow catcher objects in the scene. In this case there will be no auxiliary passes required
    * for the devision (to save up memory). So delay the asserts to this point so that the number of
    * samples check handles such configuration. */
   kernel_assert(kfilm_convert->pass_offset != PASS_UNUSED);
@@ -404,14 +404,14 @@ film_calculate_shadow_catcher(const KernelFilmConvert *ccl_restrict kfilm_conver
   ccl_global const float *in_matte = buffer + kfilm_convert->pass_shadow_catcher_matte;
 
   /* No scaling needed. The integration works in way that number of samples in the combined and
-   * shadow catcher passes are the same, and exposure is cancelled during the division. */
+   * shadow catcher passes are the same, and exposure is canceled during the division. */
   const float3 color_catcher = make_float3(in_catcher[0], in_catcher[1], in_catcher[2]);
   const float3 color_combined = make_float3(in_combined[0], in_combined[1], in_combined[2]);
   const float3 color_matte = make_float3(in_matte[0], in_matte[1], in_matte[2]);
 
   /* Need to ignore contribution of the matte object when doing division (otherwise there will be
    * artifacts caused by anti-aliasing). Since combined pass is used for adaptive sampling and need
-   * to contain matte objects, we subtrack matte objects contribution here. This is the same as if
+   * to contain matte objects, we subtract matte objects contribution here. This is the same as if
    * the matte objects were not accumulated to the combined pass. */
   const float3 combined_no_matte = color_combined - color_matte;
 
@@ -422,8 +422,8 @@ film_calculate_shadow_catcher(const KernelFilmConvert *ccl_restrict kfilm_conver
   const float alpha = film_transparency_to_alpha(transparency);
 
   /* Alpha-over on white using transparency of the combined pass. This allows to eliminate
-   * artifacts which are happenning on an edge of a shadow catcher when using transparent film.
-   * Note that we treat shadow catcher as straight alpha here because alpha got cancelled out
+   * artifacts which are happening on an edge of a shadow catcher when using transparent film.
+   * Note that we treat shadow catcher as straight alpha here because alpha got canceled out
    * during the division. */
   const float3 pixel = (1.0f - alpha) * one_float3() + alpha * shadow_catcher;
 
diff --git a/intern/cycles/kernel/kernel_random.h b/intern/cycles/kernel/kernel_random.h
index 41b7d76230a..240c92bf9d0 100644
--- a/intern/cycles/kernel/kernel_random.h
+++ b/intern/cycles/kernel/kernel_random.h
@@ -111,7 +111,7 @@ ccl_device_forceinline void path_rng_2D(
 }
 
 /**
- * 1D hash recomended from "Hash Functions for GPU Rendering" JCGT Vol. 9, No. 3, 2020
+ * 1D hash recommended from "Hash Functions for GPU Rendering" JCGT Vol. 9, No. 3, 2020
  * See https://www.shadertoy.com/view/4tXyWN and https://www.shadertoy.com/view/XlGcRh
  * http://www.jcgt.org/published/0009/03/02/paper.pdf
  */
@@ -124,7 +124,7 @@ ccl_device_inline uint hash_iqint1(uint n)
 }
 
 /**
- * 2D hash recomended from "Hash Functions for GPU Rendering" JCGT Vol. 9, No. 3, 2020
+ * 2D hash recommended from "Hash Functions for GPU Rendering" JCGT Vol. 9, No. 3, 2020
  * See https://www.shadertoy.com/view/4tXyWN and https://www.shadertoy.com/view/XlGcRh
  * http://www.jcgt.org/published/0009/03/02/paper.pdf
  */
diff --git a/intern/cycles/kernel/kernel_types.h b/intern/cycles/kernel/kernel_types.h
index 927e60e8729..66b7310ab65 100644
--- a/intern/cycles/kernel/kernel_types.h
+++ b/intern/cycles/kernel/kernel_types.h
@@ -380,7 +380,7 @@ typedef enum PassType {
    * pass contains number of samples which contributed to the color components of the pass.
    *
    * PASS_SHADOW_CATCHER_SAMPLE_COUNT contains number of samples for which the path split
-   * happenned.
+   * happened.
    *
    * PASS_SHADOW_CATCHER_MATTE contains pass which contains non-catcher objects. This pass is to be
    * alpha-overed onto the backdrop (after multiplication). */
diff --git a/intern/cycles/kernel/svm/svm_bevel.h b/intern/cycles/kernel/svm/svm_bevel.h
index aab089d19ea..9d7ce202d49 100644
--- a/intern/cycles/kernel/svm/svm_bevel.h
+++ b/intern/cycles/kernel/svm/svm_bevel.h
@@ -255,7 +255,7 @@ ccl_device float3 svm_bevel(INTEGRATOR_STATE_CONST_ARGS,
 
       /* Multiple importance sample between 3 axes, power heuristic
        * found to be slightly better than balance heuristic. pdf_N
-       * in the MIS weight and denominator cancelled out. */
+       * in the MIS weight and denominator canceled out. */
       float w = pdf_N / (sqr(pdf_N) + sqr(pdf_T) + sqr(pdf_B));
       if (isect.num_hits > LOCAL_MAX_HITS) {
         w *= isect.num_hits / (float)LOCAL_MAX_HITS;
diff --git a/intern/cycles/render/buffers.cpp b/intern/cycles/render/buffers.cpp
index 1cdae3af7f5..186699596ac 100644
--- a/intern/cycles/render/buffers.cpp
+++ b/intern/cycles/render/buffers.cpp
@@ -300,7 +300,7 @@ void render_buffers_host_copy_denoised(RenderBuffers *dst,
   DCHECK_EQ(dst_params.width, src_params.width);
   /* TODO(sergey): More sanity checks to avoid buffer overrun. */
 
-  /* Create a map of pass ofsets to be copied.
+  /* Create a map of pass offsets to be copied.
    * Assume offsets are different to allow copying passes between buffers with different set of
    * passes. */
 
diff --git a/intern/cycles/render/buffers.h b/intern/cycles/render/buffers.h
index c048234167d..a07e7289566 100644
--- a/intern/cycles/render/buffers.h
+++ b/intern/cycles/render/buffers.h
@@ -116,7 +116,7 @@ class BufferParams : public Node {
    *
    * When the scene passes are given, the buffer passes will be created from them and stored in
    * this params, and then params are updated for those passes.
-   * The `update_passes()` without parameters updates offsets and stries which are stored outside
+   * The `update_passes()` without parameters updates offsets and strides which are stored outside
    * of the passes. */
   void update_passes();
   void update_passes(const vector<Pass *> &scene_passes);
@@ -140,7 +140,7 @@ class BufferParams : public Node {
  protected:
   void reset_pass_offset();
 
-  /* Multipled by 2 to be able to store noisy and denoised pass types. */
+  /* Multiplied by 2 to be able to store noisy and denoised pass types. */
   static constexpr int kNumPassOffsets = PASS_NUM * 2;
 
   /* Indexed by an index derived from pass type and mode, indicates offset of the corresponding
@@ -171,7 +171,7 @@ class RenderBuffers {
 
 /* Copy denoised passes form source to destination.
  *
- * Buffer parameters are provided explicitly, allowing to copy pixelks between render buffers which
+ * Buffer parameters are provided explicitly, allowing to copy pixels between render buffers which
  * content corresponds to a render result at a non-unit resolution divider.
  *
  * `src_offset` allows to offset source pixel index which is used when a fraction of the source
diff --git a/intern/cycles/render/gpu_display.h b/intern/cycles/render/gpu_display.h
index cbe347895a1..a01348d28d5 100644
--- a/intern/cycles/render/gpu_display.h
+++ b/intern/cycles/render/gpu_display.h
@@ -117,7 +117,7 @@ class GPUDisplay {
    *
    * NOTE: The GPUDisplay should be marked for an update being in process with `update_begin()`.
    *
-   * NOTE: Texture buffer can not be mapped while graphics interopeability is active. This means
+   * NOTE: Texture buffer can not be mapped while graphics interoperability is active. This means
    * that `map_texture_buffer()` is not allowed between `graphics_interop_begin()` and
    * `graphics_interop_end()` calls.
    */
@@ -125,7 +125,7 @@ class GPUDisplay {
   /* Map pixels memory form texture to a buffer available for write from CPU. Width and height will
    * define a requested size of the texture to write to.
    * Upon success a non-null pointer is returned and the texture buffer is to be unmapped.
-   * If an error happens during mapping, or if mapoping is not supported by this GPU display a
+   * If an error happens during mapping, or if mapping is not supported by this GPU display a
    * null pointer is returned and the buffer is NOT to be unmapped.
    *
    * NOTE: Usually the implementation will rely on a GPU context of some sort, and the GPU context
@@ -149,7 +149,7 @@ class GPUDisplay {
    * device API. */
   DeviceGraphicsInteropDestination graphics_interop_get();
 
-  /* (De)activate GPU display for graphics interoperability outside of regular display udpate
+  /* (De)activate GPU display for graphics interoperability outside of regular display update
    * routines. */
   virtual void graphics_interop_activate();
   virtual void graphics_interop_deactivate();
@@ -206,8 +206,8 @@ class GPUDisplay {
   GPUDisplayParams params_;
 
   /* Mark texture as its content has been updated.
-   * Used from places which knows that the texture content has been brough up-to-date, so that the
-   * drawing knows whether it can be performed, and whether drawing happenned with an up-to-date
+   * Used from places which knows that the texture content has been brought up-to-date, so that the
+   * drawing knows whether it can be performed, and whether drawing happened with an up-to-date
    * texture state. */
   void mark_texture_updated();
 
diff --git a/intern/cycles/render/session.cpp b/intern/cycles/render/session.cpp
index 84407f8e6dd..c39232be2b0 100644
--- a/intern/cycles/render/session.cpp
+++ b/intern/cycles/render/session.cpp
@@ -116,7 +116,7 @@ Session::~Session()
   }
 #endif
 
-  /* Make sure path tracer is destroyed before the deviec. This is needed because destruction might
+  /* Make sure path tracer is destroyed before the device. This is needed because destruction might
    * need to access device for device memory free. */
   /* TODO(sergey): Convert device to be unique_ptr, and rely on C++ to destruct objects in the
    * pre-defined order. */
@@ -612,7 +612,7 @@ void Session::collect_statistics(RenderStats *render_stats)
 }
 
 /* --------------------------------------------------------------------
- * Tile and tile pixels aceess.
+ * Tile and tile pixels access.
  */
 
 bool Session::has_multiple_render_tiles() const
@@ -650,7 +650,7 @@ bool Session::copy_render_tile_from_device()
 bool Session::get_render_tile_pixels(const string &pass_name, int num_components, float *pixels)
 {
   /* NOTE: The code relies on a fact that session is fully update and no scene/buffer modification
-   * is happenning while this function runs. */
+   * is happening while this function runs. */
 
   const BufferParams &buffer_params = path_trace_->get_render_tile_params();
 
@@ -689,7 +689,7 @@ bool Session::set_render_tile_pixels(const string &pass_name,
                                      const float *pixels)
 {
   /* NOTE: The code relies on a fact that session is fully update and no scene/buffer modification
-   * is happenning while this function runs. */
+   * is happening while this function runs. */
 
   const BufferPass *pass = buffer_params_.find_pass(pass_name);
   if (!pass) {
diff --git a/intern/cycles/render/session.h b/intern/cycles/render/session.h
index 492cfdd1c09..5623604bfe8 100644
--- a/intern/cycles/render/session.h
+++ b/intern/cycles/render/session.h
@@ -120,7 +120,7 @@ class Session {
 
   /* Callback is invoked by tile manager whenever on-dist tiles storage file is closed after
    * writing. Allows an engine integration to keep track of those files without worry about
-   * transfering the information when it needs to re-create session during rendering. */
+   * transferring the information when it needs to re-create session during rendering. */
   function<void(string_view)> full_buffer_written_cb;
 
   explicit Session(const SessionParams &params, const SceneParams &scene_params);
@@ -128,7 +128,7 @@ class Session {
 
   void start();
 
-  /* When quick cancel is requested path tracing is cancelles as soon as possible, without waiting
+  /* When quick cancel is requested path tracing is cancels as soon as possible, without waiting
    * for the buffer to be uniformly sampled. */
   void cancel(bool quick = false);
 
@@ -154,7 +154,7 @@ class Session {
   void collect_statistics(RenderStats *stats);
 
   /* --------------------------------------------------------------------
-   * Tile and tile pixels aceess.
+   * Tile and tile pixels access.
    */
 
   bool has_multiple_render_tiles() const;
diff --git a/intern/cycles/render/tile.cpp b/intern/cycles/render/tile.cpp
index eed75cc2372..28910bffa7b 100644
--- a/intern/cycles/render/tile.cpp
+++ b/intern/cycles/render/tile.cpp
@@ -282,7 +282,7 @@ static bool buffer_params_from_image_spec_atttributes(BufferParams *buffer_param
 
 /* Configure image specification for the given buffer parameters and passes.
  *
- * Image channels will ber strictly ordered to match content of corresponding buffer, and the
+ * Image channels will be strictly ordered to match content of corresponding buffer, and the
  * metadata will be set so that the render buffers and passes can be reconstructed from it.
  *
  * If the tile size different from (0, 0) the image specification will be configured to use the
@@ -358,7 +358,7 @@ void TileManager::update(const BufferParams &params, const Scene *scene)
 
   buffer_params_ = params;
 
-  /* TODO(sergey): Proper Error handling, so that if configuration has failed we dont' attempt to
+  /* TODO(sergey): Proper Error handling, so that if configuration has failed we don't attempt to
    * write to a partially configured file. */
   configure_image_spec_from_buffer(&write_state_.image_spec, buffer_params_, tile_size_);
 
diff --git a/intern/cycles/render/tile.h b/intern/cycles/render/tile.h
index 124d0b3652c..71b9e966278 100644
--- a/intern/cycles/render/tile.h
+++ b/intern/cycles/render/tile.h
@@ -94,7 +94,7 @@ class TileManager {
    * The file will be considered final, all handles to it will be closed. */
   void finish_write_tiles();
 
-  /* Check whether any tile ahs been written to disk. */
+  /* Check whether any tile has been written to disk. */
   inline bool has_written_tiles() const
   {
     return write_state_.num_tiles_written != 0;
diff --git a/source/blender/blenkernel/intern/geometry_component_instances.cc b/source/blender/blenkernel/intern/geometry_component_instances.cc
index 4c10f5398b7..9479d012cb8 100644
--- a/source/blender/blenkernel/intern/geometry_component_instances.cc
+++ b/source/blender/blenkernel/intern/geometry_component_instances.cc
@@ -154,8 +154,8 @@ void InstancesComponent::ensure_geometry_instances()
 
 /**
  * With write access to the instances component, the data in the instanced geometry sets can be
- * changed. This is a function on the component rather than each reference to ensure const
- * correct-ness for that reason.
+ * changed. This is a function on the component rather than each reference to ensure `const`
+ * correctness for that reason.
  */
 GeometrySet &InstancesComponent::geometry_set_from_reference(const int reference_index)
 {
diff --git a/source/blender/blenkernel/intern/gpencil_geom.cc b/source/blender/blenkernel/intern/gpencil_geom.cc
index d7c906be18e..976b26a1f3a 100644
--- a/source/blender/blenkernel/intern/gpencil_geom.cc
+++ b/source/blender/blenkernel/intern/gpencil_geom.cc
@@ -600,7 +600,7 @@ static bool BKE_gpencil_stroke_extra_points(bGPDstroke *gps,
  * \param dist: Length of the added section.
  * \param overshoot_fac: Relative length of the curve which is used to determine the extension.
  * \param mode: Affect to Start, End or Both extremes (0->Both, 1->Start, 2->End)
- * \param follow_curvature: True for appproximating curvature of given overshoot.
+ * \param follow_curvature: True for approximating curvature of given overshoot.
  * \param extra_point_count: When follow_curvature is true, use this amount of extra points
  */
 bool BKE_gpencil_stroke_stretch(bGPDstroke *gps,
diff --git a/source/blender/blenkernel/intern/mesh_convert.cc b/source/blender/blenkernel/intern/mesh_convert.cc
index 07dc6db05aa..467f7d4543e 100644
--- a/source/blender/blenkernel/intern/mesh_convert.cc
+++ b/source/blender/blenkernel/intern/mesh_convert.cc
@@ -1118,7 +1118,7 @@ static Mesh *mesh_new_from_mball_object(Object *object)
    * balls and all evaluated child meta balls (since polygonization is only stored in the mother
    * ball).
    *
-   * We create empty mesh so scripters don't run into None objects. */
+   * Create empty mesh so script-authors don't run into None objects. */
   if (!DEG_is_evaluated_object(object) || object->runtime.curve_cache == nullptr ||
       BLI_listbase_is_empty(&object->runtime.curve_cache->disp)) {
     return (Mesh *)BKE_id_new_nomain(ID_ME, ((ID *)object->data)->name + 2);
diff --git a/source/blender/editors/space_file/filesel.c b/source/blender/editors/space_file/filesel.c
index 11b06d2b414..f7bdb4326a5 100644
--- a/source/blender/editors/space_file/filesel.c
+++ b/source/blender/editors/space_file/filesel.c
@@ -1271,7 +1271,7 @@ void file_params_rename_end(wmWindowManager *wm,
   /* Ensure smooth-scroll timer is active, even if not needed, because that way rename state is
    * handled properly. */
   file_params_invoke_rename_postscroll(wm, win, sfile);
-  /* Also always activate the rename file, even if renaming was cancelled. */
+  /* Also always activate the rename file, even if renaming was canceled. */
   file_params_renamefile_activate(sfile, params);
 }
 
diff --git a/source/blender/editors/space_sequencer/sequencer_draw.c b/source/blender/editors/space_sequencer/sequencer_draw.c
index 6f10a0f6c9e..53f1c35776c 100644
--- a/source/blender/editors/space_sequencer/sequencer_draw.c
+++ b/source/blender/editors/space_sequencer/sequencer_draw.c
@@ -1757,7 +1757,7 @@ static void draw_seq_strip_thumbnail(View2D *v2d,
     }
     /* Store recently rendered frames, so they can be reused when zooming. */
     else if (!sequencer_thumbnail_v2d_is_navigating(C)) {
-      /* Clear images in frame range occupied bynew thumbnail. */
+      /* Clear images in frame range occupied by new thumbnail. */
       last_displayed_thumbnails_list_cleanup(
           last_displayed_thumbnails, thumb_x_start, thumb_x_end);
       /* Insert new thumbnail frame to list. */
diff --git a/source/blender/gpencil_modifiers/intern/MOD_gpencillength.c b/source/blender/gpencil_modifiers/intern/MOD_gpencillength.c
index e4a48925bf0..80b60547e92 100644
--- a/source/blender/gpencil_modifiers/intern/MOD_gpencillength.c
+++ b/source/blender/gpencil_modifiers/intern/MOD_gpencillength.c
@@ -140,8 +140,8 @@ static void applyLength(LengthGpencilModifierData *lmd, bGPdata *gpd, bGPDstroke
   /* HACK: The second #overshoot_fac needs to be adjusted because it is not
    * done in the same stretch call, because it can have a different length.
    * The adjustment needs to be stable when
-   * ceil(overshoot_fac*(gps->totpoints - 2)) is used in stretch and never
-   * produce a result highter than totpoints - 2. */
+   * `ceil(overshoot_fac*(gps->totpoints - 2))` is used in stretch and never
+   * produce a result higher than `totpoints - 2`. */
   const float second_overshoot_fac = lmd->overshoot_fac * (totpoints - 2) /
                                      ((float)gps->totpoints - 2) *
                                      (1.0f - 0.1f / (totpoints - 1.0f));
diff --git a/source/blender/nodes/geometry/nodes/node_geo_curve_sample.cc b/source/blender/nodes/geometry/nodes/node_geo_curve_sample.cc
index 245394d3057..ac0cd510ffa 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_curve_sample.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_curve_sample.cc
@@ -155,7 +155,7 @@ class SampleCurveFunction : public fn::MultiFunction {
       spline_indices[i] = std::max(index, 0);
     }
 
-    /* Storing lookups in an array is unecessary but will simplify custom attribute transfer. */
+    /* Storing lookups in an array is unnecessary but will simplify custom attribute transfer. */
     Array<Spline::LookupResult> lookups(mask.min_array_size());
     for (const int i : mask) {
       const float length_in_spline = lengths[i] - spline_lengths_[spline_indices[i]];
diff --git a/source/blender/windowmanager/intern/wm_dragdrop.c b/source/blender/windowmanager/intern/wm_dragdrop.c
index b6a04251ffb..6585349c83c 100644
--- a/source/blender/windowmanager/intern/wm_dragdrop.c
+++ b/source/blender/windowmanager/intern/wm_dragdrop.c
@@ -428,7 +428,7 @@ ID *WM_drag_get_local_ID_or_import_from_asset(const wmDrag *drag, int idcode)
 }
 
 /**
- * \brief Free asset ID imported for cancelled drop.
+ * \brief Free asset ID imported for canceled drop.
  *
  * If the asset was imported (linked/appended) using #WM_drag_get_local_ID_or_import_from_asset()`
  * (typically via a #wmDropBox.copy() callback), we want the ID to be removed again if the drop