# --- T2-COPYRIGHT-NOTE-BEGIN ---
# T2 SDE: package/*/diligent-engine/no-build-third-party.patch
# Copyright (C) 2024 The T2 SDE Project
# 
# This Copyright note is generated by scripts/Create-CopyPatch,
# more information can be found in the files COPYING and README.
# 
# This patch file is dual-licensed. It is available under the license the
# patched project is licensed under, as long as it is an OpenSource license
# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
# of the GNU General Public License version 2 as used by the T2 SDE.
# --- T2-COPYRIGHT-NOTE-END ---

diff --git a/DiligentTools/ThirdParty/CMakeLists.txt b/DiligentTools/ThirdParty/CMakeLists.txt
index 3526783..8a1eb14 100644
--- a/DiligentTools/ThirdParty/CMakeLists.txt
+++ b/DiligentTools/ThirdParty/CMakeLists.txt
@@ -1,5 +1,10 @@
 cmake_minimum_required (VERSION 3.6)
 
+find_package(PNG REQUIRED GLOBAL)
+find_package(TIFF REQUIRED GLOBAL)
+find_package(JPEG REQUIRED GLOBAL)
+find_package(ZLIB REQUIRED GLOBAL)
+
 set(LICENSE_INSTALL_PATH "Licenses/ThirdParty/${DILIGENT_TOOLS_DIR}")
 
 # Helper interface library to disable -Werror for the third-party libs
@@ -11,55 +16,6 @@ elseif (CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR
     target_compile_options(NO_WERROR INTERFACE -Wno-error)
 endif()
 
-
-if (NOT TARGET JPEG::JPEG)
-    add_subdirectory(libjpeg-9e)
-    install(FILES libjpeg-9e/README DESTINATION ${LICENSE_INSTALL_PATH} RENAME libjpeg-readme.txt)
-    list(APPEND THIRD_PARTY_TARGETS LibJpeg)
-endif()
-
-if (NOT TARGET TIFF::TIFF)
-    add_subdirectory(libtiff)
-    install(FILES libtiff/COPYRIGHT DESTINATION ${LICENSE_INSTALL_PATH} RENAME libtiff-copyright.txt)
-    list(APPEND THIRD_PARTY_TARGETS LibTiff)
-    if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-        target_compile_options(LibTiff PRIVATE -Wno-shorten-64-to-32)
-    endif()
-endif()
-
-if (NOT TARGET ZLIB::ZLIB)
-    include(zlib.cmake)
-    install(FILES zlib/README DESTINATION ${LICENSE_INSTALL_PATH} RENAME zlib-readme.txt)
-    list(APPEND THIRD_PARTY_TARGETS ZLib)
-    if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-        target_compile_options(ZLib PRIVATE -Wno-shorten-64-to-32)
-    endif()
-endif()
-
-if (NOT TARGET PNG::PNG)
-    set(PNG_BUILD_ZLIB ON CACHE BOOL "Use find_package(zlib) to find ZLib location")
-    set(PNG_SHARED OFF CACHE BOOL "Build shared version of libpng")
-    set(PNG_TOOLS OFF CACHE BOOL "Build libpng tools")
-    set(PNG_TESTS OFF CACHE BOOL "Build libpng tests")
-    set(SKIP_INSTALL_ALL ON)
-    set(PNG_FRAMEWORK OFF)
-    if(PLATFORM_TVOS)
-        # libpng does not support tvOS, but it does support iOS, so we can use the iOS target
-        set(IOS TRUE)
-    endif()
-    add_subdirectory(libpng)
-    set_target_properties(png_static PROPERTIES POSITION_INDEPENDENT_CODE ON)
-    set_directory_root_folder(libpng DiligentTools/ThirdParty/png)
-    install(FILES libpng/LICENSE DESTINATION ${LICENSE_INSTALL_PATH} RENAME lpng-license.txt)
-    add_library(PNG::PNG ALIAS png_static)
-    list(APPEND THIRD_PARTY_TARGETS png_static)
-
-    if (PLATFORM_EMSCRIPTEN)
-        set_targets_emscripten_properties(png_static)
-    endif()
-endif()
-
-
 if (NOT DILIGENT_ARGS_DIR)
     set(DILIGENT_ARGS_DIR "${CMAKE_CURRENT_SOURCE_DIR}/args" CACHE PATH "args source directory")
 endif()
@@ -75,15 +31,7 @@ endif()
 install(FILES tinygltf/LICENSE DESTINATION ${LICENSE_INSTALL_PATH} RENAME tinygltf-license.txt)
 install(FILES imGuIZMO.quat/license.txt DESTINATION ${LICENSE_INSTALL_PATH} RENAME imGuIZMO.quat-license.txt)
 install(FILES stb/LICENSE DESTINATION "${LICENSE_INSTALL_PATH}" RENAME stb-license.txt)
-install(FILES json/LICENSE.MIT DESTINATION ${LICENSE_INSTALL_PATH} RENAME json-license.txt)
-
-
 add_library(Diligent-JSON INTERFACE)
-target_include_directories(Diligent-JSON INTERFACE json/single_include/nlohmann)
-# WARNING: JSON_DIAGNOSTICS must be consistently defined for all inclusions of json.hpp,
-#          or there will be hard-to-diagnose run-time crashes.
-#          It is required by RenderStatePackager even in release builds.
-target_compile_definitions(Diligent-JSON INTERFACE JSON_DIAGNOSTICS=1)
 
 
 if (NOT DILIGENT_DEAR_IMGUI_PATH)