Cleanup: fix typos in comments and docs

Contributed by luzpaz.

Differential Revision: https://developer.blender.org/D10447

intern/cycles/blender/display_driver.cpp

@@ -334,7 +334,7 @@ bool BlenderDisplayDriver::update_begin(const Params &params,
 
   /* Update PBO dimensions if needed.
    *
-   * NOTE: Allocate the PBO for the the size which will fit the final render resolution (as in,
+   * NOTE: Allocate the PBO for 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 interoperability is not used we are

intern/cycles/bvh/node.cpp

@@ -153,7 +153,7 @@ void BVHNode::update_time()
 namespace {
 
 struct DumpTraversalContext {
-  /* Descriptor of wile where writing is happening. */
+  /* Descriptor of while where writing is happening. */
   FILE *stream;
   /* Unique identifier of the node current. */
   int id;

intern/cycles/bvh/node.h

@@ -178,7 +178,7 @@ class InnerNode : public BVHNode {
     reset_unused_children();
   }
 
-  /* NOTE: This function is only used during binary BVH builder, and it
+  /* NOTE: This function is only used during binary BVH builder, and it's
    * supposed to be configured to have 2 children which will be filled-in in a
    * bit. But this is important to have children reset to NULL. */
   explicit InnerNode(const BoundBox &bounds) : BVHNode(bounds), num_children_(0)

intern/cycles/cmake/macros.cmake

@@ -88,7 +88,7 @@ endmacro()
 
 function(cycles_link_directories)
   if(APPLE)
-    # APPLE plaform uses full paths for linking libraries, and avoids link_directories.
+    # APPLE platform uses full paths for linking libraries, and avoids link_directories.
     return()
   endif()
 

intern/cycles/doc/license/readme.txt

@@ -3,7 +3,7 @@ This program uses code from various sources, the default license is Apache 2.0
 for all code, with the following exceptions.
 
 Modified BSD License
-* Code adapated from Open Shading Language
+* Code adapted from Open Shading Language
 * Sobol direction vectors
 * Matrix inversion code from OpenEXR
 * MD5 Hash code

intern/cycles/integrator/path_trace_display.h

@@ -76,7 +76,7 @@ class PathTraceDisplay {
 
   /* Copy buffer of rendered pixels of a given size into a given position of the texture.
    *
-   * This function does not acquire a lock. The reason for this is is to allow use of this function
+   * This function does not acquire a lock. The reason for this is to allow use of this function
    * for partial updates from different devices. In this case the caller will acquire the lock
    * once, update all the slices and release
    * the lock once. This will ensure that draw() will never use partially updated texture. */

intern/cycles/kernel/CMakeLists.txt

@@ -712,7 +712,7 @@ if(WITH_COMPILER_ASAN)
     string(APPEND CMAKE_CXX_FLAGS_RELWITHDEBINFO " -fno-sanitize=all")
     string(APPEND CMAKE_CXX_FLAGS_DEBUG " -fno-sanitize=vptr")
   elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
-    # With OSL, Cycles disables rtti in some modules, wich then breaks at linking
+    # With OSL, Cycles disables rtti in some modules, which then breaks at linking
     # when trying to use vptr sanitizer (included into 'undefined' general option).
     string(APPEND CMAKE_CXX_FLAGS_RELWITHDEBINFO " -fno-sanitize=vptr")
     string(APPEND CMAKE_CXX_FLAGS_DEBUG " -fno-sanitize=vptr")

intern/cycles/kernel/device/optix/kernel.cu

@@ -46,7 +46,7 @@ template<typename T> ccl_device_forceinline T *get_payload_ptr_2()
 ccl_device_forceinline int get_object_id()
 {
 #ifdef __OBJECT_MOTION__
-  /* Always get the the instance ID from the TLAS
+  /* Always get the instance ID from the TLAS
    * There might be a motion transform node between TLAS and BLAS which does not have one. */
   return optixGetInstanceIdFromHandle(optixGetTransformListHandle(0));
 #else

intern/cycles/kernel/osl/CMakeLists.txt

@@ -55,7 +55,7 @@ if(APPLE)
   # Disable allocation warning on macOS prior to 10.14: the OSLRenderServices
   # contains member which is 64 bytes aligned (cache inside of OIIO's
   # unordered_map_concurrent). This is not something what the SDK supportsm, but
-  # since we take care of allocations ourselves is is OK to ignore the
+  # since we take care of allocations ourselves is OK to ignore the
   # diagnostic message.
   string(APPEND CMAKE_CXX_FLAGS " -faligned-allocation")
 endif()

intern/cycles/util/ies.cpp

@@ -23,10 +23,10 @@
 
 CCL_NAMESPACE_BEGIN
 
-// NOTE: For some reason gcc-7.2 does not instantiate this versio of allocator
-// gere (used in IESTextParser). Works fine for gcc-6, gcc-7.3 and gcc-8.
+// NOTE: For some reason gcc-7.2 does not instantiate this version of the
+// allocator here (used in IESTextParser). Works fine for gcc-6, gcc-7.3 and gcc-8.
 //
-// TODO(sergey): Get to the root of this issue, or confirm this i a compiler
+// TODO(sergey): Get to the root of this issue, or confirm this is a compiler
 // issue.
 template class GuardedAllocator<char>;
 

intern/cycles/util/path.cpp

@@ -541,7 +541,7 @@ static string path_make_compatible(const string &path)
   if ((path.size() >= 3) && (path[0] == DIR_SEP) && (path[1] == DIR_SEP)) {
     result = path_cleanup_unc(result);
   }
-  /* Make sure volume-only path ends up wit ha directory separator. */
+  /* Make sure volume-only path ends up wit a directory separator. */
   if (result.size() == 2 && result[1] == ':') {
     result += DIR_SEP;
   }

intern/cycles/util/ssef.h

@@ -906,7 +906,7 @@ __forceinline void store4f_nt(void *ptr, const ssef &v)
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-/// Euclidian Space Operators
+/// Euclidean Space Operators
 ////////////////////////////////////////////////////////////////////////////////
 
 __forceinline float dot(const ssef &a, const ssef &b)

intern/sky/include/sky_model.h

@@ -133,7 +133,7 @@ function which generates skydome states for different solar emission spectra
 and solar radii: 'arhosekskymodelstate_alienworld_alloc_init()'.
 
 See the notes about the "Alien World" functionality provided further down for a
-discussion of the usefulness and limits of that second initalisation function.
+discussion of the usefulness and limits of that second initialisation function.
 Sky model states that have been initialized with either function behave in a
 completely identical fashion during use and cleanup.
 
@@ -368,7 +368,7 @@ SKY_ArHosekSkyModelState *SKY_arhosekskymodelstate_alloc_init(const double solar
     with a sun of a surface temperature given in 'kelvin'. The parameter
     'solar_intensity' controls the overall brightness of the sky, relative
     to the solar irradiance on Earth. A value of 1.0 yields a sky dome that
-    is, on average over the wavelenghts covered in the model (!), as bright
+    is, on average over the wavelengths covered in the model (!), as bright
     as the terrestrial sky in radiometric terms.
 
     Which means that the solar radius has to be adjusted, since the