WIP

CMakeLists.txt

@@ -1,11 +1,13 @@
 cmake_minimum_required(VERSION 3.15 FATAL_ERROR)
-
+#set(CMAKE_FIND_DEBUG_MODE 1)
 project(guc VERSION 0.5)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
+set(CMAKE_MODULE_PATH "${CMAKE_PROJECT_DIR}/cmake")
+
 # Find USD - only non-monolithic builds have been tested.
 find_package(pxr CONFIG REQUIRED)
 
@@ -14,9 +16,15 @@ find_package(pxr CONFIG REQUIRED)
 find_package(MaterialX 1.38.6 REQUIRED HINTS ${pxr_DIR})
 
 # We need to open PNG and JPEG files in order to read the number of channels
-# for shading node creation. OIIO should be provided by the USD installation.
+# for shading node creation. OIIO can be provided by the USD installation,
+# otherwise we fall back to stb_image.
 find_package(OpenImageIO HINTS ${pxr_DIR})
 
+# Draco CMake config file is broken in this version, rely on Find* script.
+# TODO: set Draco_DIR / ROOT instead of pxr_DIR
+#find_package(XDraco)# HINTS ${pxr_DIR})
+include(cmake/FindXDraco.cmake)
+
 option(GUC_BUILD_EXECUTABLE "Build the guc executable." ON)
 option(GUC_BUILD_USDGLTF "Build the Sdf file format plugin." OFF)
 

src/libguc/CMakeLists.txt

@@ -62,6 +62,16 @@ else()
   list(APPEND LIBGUC_SHARED_LIBRARIES $<BUILD_INTERFACE:stb_image>)
 endif()
 
+if(draco_FOUND)
+  list(APPEND LIBGUC_DEFINES "GUC_USE_DRACO")
+  if(NOT TARGET usd_ms)
+    list(APPEND LIBGUC_SHARED_LIBRARIES ${DRACO_LIBRARIES})
+  endif()
+# TODO: how are headers included? --> need target
+else()
+  message(FATAL_ERROR "Draco NOT FOUND :(")
+endif()
+
 #
 # libguc
 #
@@ -77,6 +87,7 @@ target_link_libraries(libguc PRIVATE ${LIBGUC_SHARED_LIBRARIES})
 target_include_directories(libguc
   PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
   PUBLIC $<INSTALL_INTERFACE:include>
+${DRACO_INCLUDE_DIRS}
 )
 
 set_target_properties(