CUDA

CMakeLists.txt

@@ -6,12 +6,16 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
+option(SZILASSI_ENABLE_CUDA "Build the FP32 CUDA global-search backend" ON)
+
 set(EIGEN_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/external/eigen-3.4.0" CACHE PATH "Eigen include root")
 if(NOT EXISTS "${EIGEN_ROOT}/Eigen/Dense")
     message(FATAL_ERROR "Eigen not found at ${EIGEN_ROOT}. Download Eigen 3.4.0 into external/eigen-3.4.0 or pass -DEIGEN_ROOT=...")
 endif()
 
 add_library(neighborly_core
+    src/Checkpoint/GlobalCheckpoint.cpp
+    src/Checkpoint/GlobalCheckpoint.h
     src/NeighborlyCore/plane.h
     src/NeighborlyCore/precise_geometry.h
     src/NeighborlyCore/util.cpp
@@ -21,9 +25,33 @@ add_library(neighborly_core
     projects/Szilassi/solver.h
 )
 
+include(CheckLanguage)
+if(SZILASSI_ENABLE_CUDA)
+    check_language(CUDA)
+endif()
+
+if(SZILASSI_ENABLE_CUDA AND CMAKE_CUDA_COMPILER)
+    enable_language(CUDA)
+    add_library(neighborly_cuda src/CudaSearch/cuda_search.cu)
+    set_target_properties(neighborly_cuda PROPERTIES
+        CUDA_ARCHITECTURES "89-real;120-real;120-virtual"
+        CUDA_STANDARD 17
+        CUDA_STANDARD_REQUIRED ON
+    )
+    target_compile_definitions(neighborly_cuda PUBLIC SZILASSI_HAS_CUDA=1)
+else()
+    add_library(neighborly_cuda src/CudaSearch/cuda_search_stub.cpp)
+    message(STATUS "CUDA Toolkit not found: building a diagnostic stub backend")
+endif()
+
+target_include_directories(neighborly_cuda PUBLIC
+    "${CMAKE_CURRENT_SOURCE_DIR}/src/CudaSearch"
+)
+
 target_include_directories(neighborly_core
     PUBLIC
         "${CMAKE_CURRENT_SOURCE_DIR}/src/NeighborlyCore"
+        "${CMAKE_CURRENT_SOURCE_DIR}/src/Checkpoint"
         "${CMAKE_CURRENT_SOURCE_DIR}/projects/Szilassi"
         "${EIGEN_ROOT}"
 )
@@ -36,7 +64,7 @@ else()
 endif()
 
 add_executable(neighborly_main projects/Szilassi/main.cpp)
-target_link_libraries(neighborly_main PRIVATE neighborly_core)
+target_link_libraries(neighborly_main PRIVATE neighborly_core neighborly_cuda)
 
 add_executable(verify_cpp projects/VerifyCpp/verify_cpp.cpp)
 target_link_libraries(verify_cpp PRIVATE neighborly_core)
@@ -44,5 +72,6 @@ target_link_libraries(verify_cpp PRIVATE neighborly_core)
 add_executable(polyhedron_gui WIN32 projects/PolyhedronGui/launcher_gui.cpp)
 if(MSVC)
     target_compile_definitions(polyhedron_gui PRIVATE UNICODE _UNICODE NOMINMAX)
+    target_compile_options(polyhedron_gui PRIVATE /utf-8)
     target_link_libraries(polyhedron_gui PRIVATE shell32)
 endif()