[opencsg] Add new port (#5481)

* Add opencsg package

* Make opencsg static only

* Add patch for illegal character, fix line endings

ports/opencsg/CMakeLists.txt

@@ -0,0 +1,46 @@
+cmake_minimum_required (VERSION 3.4)
+project (opencsg)
+
+set(HEADERS
+  include/opencsg.h
+)
+
+set(SRCS
+	src/area.cpp
+	src/batch.cpp
+	src/context.cpp
+	src/channelManager.cpp
+	src/frameBufferObject.cpp
+	src/frameBufferObjectExt.cpp
+	src/occlusionQuery.cpp
+	src/opencsgRender.cpp
+	src/openglHelper.cpp
+	src/primitive.cpp
+	src/primitiveHelper.cpp
+	src/renderGoldfeather.cpp
+	src/renderSCS.cpp
+	src/scissorMemo.cpp
+	src/settings.cpp
+	src/stencilManager.cpp
+	src/pBufferTexture.cpp
+	RenderTexture/RenderTexture.cpp
+)
+
+
+add_library(opencsg ${SRCS} ${HEADERS})
+
+include_directories(src include RenderTexture ".")
+find_package(GLEW REQUIRED)
+include_directories(${GLEW_INCLUDE_DIRS})
+target_link_libraries(opencsg PRIVATE GLEW::GLEW)
+
+install(
+  TARGETS opencsg
+  RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+  LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+)
+
+if(NOT DISABLE_INSTALL_HEADERS)
+	install(FILES ${HEADERS} DESTINATION include/opencsg)
+endif()

ports/opencsg/CONTROL

@@ -0,0 +1,4 @@
+Source: opencsg
+Version: 1.4.2
+Build-Depends: glew
+Description: OpenCSG is a library that does image-based CSG rendering using OpenGL. OpenCSG is written in C++ and supports most modern graphics hardware using Microsoft Windows or the Linux operating system.

ports/opencsg/illegal_char.patch

@@ -0,0 +1,13 @@
+diff --git a/include/opencsg.h b/include/opencsg.h
+index d753a0e..b482c40 100644
+--- a/include/opencsg.h
++++ b/include/opencsg.h
+@@ -156,7 +156,7 @@ namespace OpenCSG {
+     /// The DepthComplexityAlgorithm specifies the strategy for profiting
+     /// from depth complexity when performing the CSG rendering.
+     ///   - NoDepthComplexitySampling: Does not employ the depth complexity.
+-    ///                  This essentially makes the algorithm O(n²), but with
++    ///                  This essentially makes the algorithm O(n²), but with
+     ///                  low constant costs.
+     ///   - DepthComplexitySampling: Calculates the depth complexity k using
+     ///                  the stencil buffer. This makes algorithm O(n*k), but

ports/opencsg/portfile.cmake

@@ -0,0 +1,39 @@
+# Common Ambient Variables:
+#   CURRENT_BUILDTREES_DIR    = ${VCPKG_ROOT_DIR}\buildtrees\${PORT}
+#   CURRENT_PACKAGES_DIR      = ${VCPKG_ROOT_DIR}\packages\${PORT}_${TARGET_TRIPLET}
+#   CURRENT_PORT_DIR          = ${VCPKG_ROOT_DIR}\ports\${PORT}
+#   PORT                      = current port name (zlib, etc)
+#   TARGET_TRIPLET            = current triplet (x86-windows, x64-windows-static, etc)
+#   VCPKG_CRT_LINKAGE         = C runtime linkage type (static, dynamic)
+#   VCPKG_LIBRARY_LINKAGE     = target library linkage type (static, dynamic)
+#   VCPKG_ROOT_DIR            = <C:\path\to\current\vcpkg>
+#   VCPKG_TARGET_ARCHITECTURE = target architecture (x64, x86, arm)
+#
+
+include(vcpkg_common_functions)
+
+vcpkg_check_linkage(ONLY_STATIC_LIBRARY)
+
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO floriankirsch/OpenCSG
+    REF "opencsg-1-4-2-release"
+    SHA512 df117a1b7153a95332d236918d1547b0afe6f3ead46af2733c5feee6e25cec984b21affc41fd8320a45be9292bd3b32e21ed8bb3d08371ddd657f659b9bb932a
+    HEAD_REF master
+    PATCHES illegal_char.patch
+)
+
+file(COPY ${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt DESTINATION ${SOURCE_PATH})
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    PREFER_NINJA
+    OPTIONS -DUNICODE=1 -D_UNICODE=1
+    # OPTIONS_RELEASE -DOPTIMIZE=1
+    OPTIONS_DEBUG -DDISABLE_INSTALL_HEADERS=ON
+)
+
+vcpkg_install_cmake()
+
+# Handle copyright
+file(INSTALL ${SOURCE_PATH}/license.txt DESTINATION ${CURRENT_PACKAGES_DIR}/share/opencsg RENAME copyright)