Stabilize 3DGS D3D12 phase 3 and sort key setup

MVS/3DGS-D3D12/CMakeLists.txt

@@ -5,6 +5,8 @@ project(XC3DGSD3D12MVS LANGUAGES CXX)
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
+find_program(XC_DXC_EXECUTABLE NAMES dxc)
+
 get_filename_component(XCENGINE_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/../.." ABSOLUTE)
 set(XCENGINE_BUILD_DIR "${XCENGINE_ROOT}/build")
 set(XCENGINE_INCLUDE_DIR "${XCENGINE_ROOT}/engine/include")
@@ -30,6 +32,21 @@ add_executable(xc_3dgs_d3d12_mvs
     src/GaussianPlyLoader.cpp
     include/XC3DGSD3D12/App.h
     include/XC3DGSD3D12/GaussianPlyLoader.h
+    shaders/PreparedSplatView.hlsli
+    shaders/PrepareGaussiansCS.hlsl
+    shaders/BuildSortKeysCS.hlsl
+    shaders/DebugPointsVS.hlsl
+    shaders/DebugPointsPS.hlsl
+)
+
+set_source_files_properties(
+    shaders/PreparedSplatView.hlsli
+    shaders/PrepareGaussiansCS.hlsl
+    shaders/BuildSortKeysCS.hlsl
+    shaders/DebugPointsVS.hlsl
+    shaders/DebugPointsPS.hlsl
+    PROPERTIES
+        HEADER_FILE_ONLY TRUE
 )
 
 target_include_directories(xc_3dgs_d3d12_mvs PRIVATE
@@ -69,3 +86,19 @@ add_custom_command(TARGET xc_3dgs_d3d12_mvs POST_BUILD
         "${CMAKE_CURRENT_SOURCE_DIR}/room.ply"
         "$<TARGET_FILE_DIR:xc_3dgs_d3d12_mvs>/room.ply"
 )
+
+add_custom_command(TARGET xc_3dgs_d3d12_mvs POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -E copy_directory
+        "${CMAKE_CURRENT_SOURCE_DIR}/shaders"
+        "$<TARGET_FILE_DIR:xc_3dgs_d3d12_mvs>/shaders"
+)
+
+if(XC_DXC_EXECUTABLE)
+    add_custom_command(TARGET xc_3dgs_d3d12_mvs POST_BUILD
+        COMMAND "${XC_DXC_EXECUTABLE}"
+            -T cs_6_6
+            -E MainCS
+            -Fo "$<TARGET_FILE_DIR:xc_3dgs_d3d12_mvs>/shaders/BuildSortKeysCS.dxil"
+            "${CMAKE_CURRENT_SOURCE_DIR}/shaders/BuildSortKeysCS.hlsl"
+    )
+endif()