WIP: gaussian splatting

Author: pablode

src/libguc/CMakeLists.txt

@@ -41,7 +41,7 @@ set(LIBGUC_DEFINES
 if(TARGET usd_ms)
   set(LIBGUC_USD_LIBS usd_ms)
 else()
-  set(LIBGUC_USD_LIBS usd usdGeom usdLux usdShade usdUtils usdMtlx usdUI)
+  set(LIBGUC_USD_LIBS usd usdGeom usdLux usdVol usdShade usdUtils usdMtlx usdUI)
 endif()
 
 set(LIBGUC_SHARED_LIBRARIES

src/libguc/src/cgltf_util.cpp

@@ -52,6 +52,7 @@ namespace detail
 #ifdef GUC_USE_DRACO
            strcmp(name, GLTF_KHR_DRACO_MESH_COMPRESSION_EXTENSION_NAME) == 0 ||
 #endif
+           strcmp(name, guc::GLTF_KHR_GAUSSIAN_SPLATTING_EXTENSION_NAME) == 0 ||
            strcmp(name, "KHR_lights_punctual") == 0 ||
            strcmp(name, "KHR_materials_clearcoat") == 0 ||
            strcmp(name, "KHR_materials_emissive_strength") == 0 ||
@@ -121,7 +122,8 @@ namespace detail
 
   void releaseFile(const cgltf_memory_options* memory_options,
                    const cgltf_file_options* file_options,
-                   void* data)
+                   void* data,
+                   [[maybe_unused]] cgltf_size size)
   {
     auto bufferPtr = (const char*) data;
     auto bufferHolder = (BufferHolder*) file_options->user_data;
@@ -500,12 +502,12 @@ namespace guc
 
       if (meshoptCompressionRequired)
       {
-        TF_RUNTIME_ERROR(errStr, guc::cgltf_error_string(result));
+        TF_RUNTIME_ERROR(errStr, cgltf_error_string(result));
         free_gltf(*data);
         return false;
       }
 
-      TF_WARN(errStr, guc::cgltf_error_string(result));
+      TF_WARN(errStr, cgltf_error_string(result));
     }
 
 #ifdef GUC_USE_DRACO

src/libguc/src/cgltf_util.h

@@ -20,6 +20,8 @@
 
 namespace guc
 {
+  constexpr static const char* GLTF_KHR_GAUSSIAN_SPLATTING_EXTENSION_NAME = "KHR_gaussian_splatting";
+
   bool load_gltf(const char* gltfPath, cgltf_data** data, bool validate);
 
   void free_gltf(cgltf_data* data);