fix MSVC warnings and Win32 build

- CMakeLists.txt: Skip libatomic linking on MSVC (atomics built into runtime)
- crate-reader.cc: Use std::transform with explicit cast to fix C4244 warning
- pprinter.cc: Remove duplicate to_string(DomeLight::TextureFormat) to fix LNK4006

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

CMakeLists.txt

@@ -1381,7 +1381,8 @@ foreach(TINYUSDZ_LIB_TARGET ${TINYUSDZ_LIBS})
 
   # On 32-bit systems, 64-bit atomic operations require libatomic
   # (Skip for emscripten as libatomic doesn't exist in wasm environment)
-  if (CMAKE_SIZEOF_VOID_P EQUAL 4 AND NOT EMSCRIPTEN)
+  # (Skip for MSVC as atomics are built into the runtime)
+  if (CMAKE_SIZEOF_VOID_P EQUAL 4 AND NOT EMSCRIPTEN AND NOT MSVC)
     target_link_libraries(${TINYUSDZ_LIB_TARGET} atomic)
   endif()
 

src/crate-reader.cc

@@ -1092,7 +1092,8 @@ bool CrateReader::ReadDoubleArrayTyped(bool is_compressed, TypedArray<double> *d
           _err += "Failed to read compressed ints in ReadDoubleArrayTyped.\n";
           return false;
         }
-        std::copy(ints.begin(), ints.end(), (*d)->data());
+        std::transform(ints.begin(), ints.end(), (*d)->data(),
+                       [](int64_t v) { return static_cast<double>(v); });
       } else if (code == 't') {
         uint32_t lutSize;
         if (!_sr->read4(&lutSize)) {

src/pprinter.cc

@@ -13,6 +13,7 @@
 #include "layer.hh"
 #include "str-util.hh"
 #include "tiny-format.hh"
+#include "usdLux.hh"
 #include "usdShade.hh"
 #include "usdMtlx.hh"
 #include "value-pprint.hh"
@@ -4649,30 +4650,7 @@ std::string to_string(const XformOp::OpType &op) {
 
 //std::string to_string(const tinyusdz::value::token &v) { return v.str(); }
 
-std::string to_string(const DomeLight::TextureFormat &texformat) {
-  std::string s = "[InvalidTextureFormat]";
-
-  switch (texformat) {
-    case DomeLight::TextureFormat::Automatic: {
-      s = "automatic";
-      break;
-    }
-    case DomeLight::TextureFormat::Latlong: {
-      s = "latlong";
-      break;
-    }
-    case DomeLight::TextureFormat::MirroredBall: {
-      s = "mirroedBall";
-      break;
-    }
-    case DomeLight::TextureFormat::Angular: {
-      s = "angular";
-      break;
-    }
-  }
-
-  return s;
-}
+// to_string(DomeLight::TextureFormat) is defined in usdLux.cc
 
 std::string dump_path(const Path &path) {
   std::stringstream ss;