Initial FreeBSD support (#1214)

WickedEngine/CMakeLists.txt

@@ -139,7 +139,7 @@ if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
             target_compile_options(${TARGET_NAME} PUBLIC /arch:AVX)
         endif()
     endif()
-elseif ("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "x86_64" OR "${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "AMD64" OR "${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "x86" OR "${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "i386")
+elseif ("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "x86_64" OR "${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "AMD64" OR "${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "amd64" OR "${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "x86" OR "${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "i386")
     if (USE_AVX512)
         target_compile_options(${TARGET_NAME} PUBLIC -mavx512f -mavx512vl -mavx512dq -mavx2 -mbmi -mpopcnt -mlzcnt -mf16c)
     elseif (USE_AVX2)

WickedEngine/wiHelper.cpp

@@ -34,7 +34,13 @@
 #include <WinBase.h>
 #endif // _WIN32
 
-#ifdef PLATFORM_LINUX
+#if defined(__FREEBSD__)
+#include <kvm.h>
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/user.h>
+#pragma comment(lib,"kvm")
+#elif defined(PLATFORM_LINUX)
 #include <sys/sysinfo.h>
 #endif // PLATFORM_LINUX
 
@@ -1348,12 +1354,22 @@ namespace wi::helper
 
 	std::string GetExecutablePath()
 	{
-#ifdef _WIN32
+#if defined(_WIN32)
 		wchar_t wstr[1024] = {};
 		GetModuleFileName(NULL, wstr, arraysize(wstr));
 		char str[1024] = {};
 		StringConvert(wstr, str, arraysize(str));
 		return str;
+#elif defined(__FREEBSD__)
+		int name[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
+		char str[MAXPATHLEN] = {};
+		size_t length;
+		int error = sysctl(name, 4, str, &length, NULL, 0);
+		if (error < 0 || length <= 1) {
+			// sysctl failed
+			return std::string();
+		}
+		return std::string(str, length);
 #else
 		return std::filesystem::canonical("/proc/self/exe").string();
 #endif // _WIN32
@@ -1958,6 +1974,34 @@ namespace wi::helper
 		GetProcessMemoryInfo(GetCurrentProcess(), (PROCESS_MEMORY_COUNTERS*)&pmc, sizeof(pmc));
 		mem.process_physical = pmc.WorkingSetSize;
 		mem.process_virtual = pmc.PrivateUsage;
+#elif defined(__FREEBSD__)
+		static uint64_t phys_mem = 0;
+		static uint64_t swap_mem = 0;
+		size_t sysctl_buf_s;
+		int page_size = getpagesize();
+		if (phys_mem == 0)
+		{
+			int phys_mem_name[] = { CTL_HW, HW_PHYSMEM };
+			sysctl_buf_s = sizeof(phys_mem);
+			sysctl(phys_mem_name, 2, &phys_mem, &sysctl_buf_s, NULL, 0);
+			kvm_t *kvm;
+			if ((kvm = kvm_open(NULL, "/dev/null", "/dev/null", O_RDONLY, "GetMemoryUsage")) != NULL)
+			{
+				struct kvm_swap swap;
+				if (kvm_getswapinfo(kvm, &swap, 1, 0) == 0)
+					swap_mem = swap.ksw_total * page_size;
+				kvm_close(kvm);
+			}
+		}
+		mem.total_physical = phys_mem;
+		mem.total_virtual = swap_mem;
+		struct kinfo_proc kinfo;
+		int proc_name[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, getpid() };
+		sysctl_buf_s = sizeof(struct kinfo_proc);
+		if (sysctl(proc_name, 4, &kinfo, &sysctl_buf_s, NULL, 0) == 0)
+		{
+			mem.process_physical = kinfo.ki_rssize * page_size;
+		}
 #elif defined(PLATFORM_LINUX)
 		struct sysinfo info;
 		constexpr int PAGE_SIZE = 4096;

WickedEngine/wiJobSystem.cpp

@@ -14,6 +14,9 @@
 
 #ifdef PLATFORM_LINUX
 #include <pthread.h>
+#ifdef __FREEBSD__
+#include <pthread_np.h>
+#endif
 #include <sys/resource.h>
 #endif // PLATFORM_LINUX
 
@@ -198,7 +201,9 @@ namespace wi::jobsystem
 			{
 				std::thread& worker = res.threads.emplace_back([threadID, priority, &res] {
 
-#ifdef PLATFORM_LINUX
+#if defined(__FREEBSD__)
+// TODO: FreeBSD's setpriority is incompatible with the expected Linux non-standard behavior
+#elif defined(PLATFORM_LINUX)
 
 					// from the sched(2) manpage:
 					// In the current [Linux 2.6.23+] implementation, each unit of

WickedEngine/wiRenderPath3D_PathTracing.cpp

@@ -12,7 +12,9 @@
 #include "OpenImageDenoise/oidn.hpp"
 #if OIDN_VERSION_MAJOR >= 2
 #define OPEN_IMAGE_DENOISE
+#ifdef _WIN32
 #pragma comment(lib,"OpenImageDenoise.lib")
+#endif
 // Also provide the required DLL files from OpenImageDenoise release near the exe!
 #endif // OIDN_VERSION_MAJOR >= 2
 #endif // __has_include("OpenImageDenoise/oidn.hpp")

WickedEngine/wiScene_Components.cpp

@@ -18,7 +18,9 @@
 #include "OpenImageDenoise/oidn.hpp"
 #if OIDN_VERSION_MAJOR >= 2
 #define OPEN_IMAGE_DENOISE
+#ifdef _WIN32
 #pragma comment(lib,"OpenImageDenoise.lib")
+#endif
 // Also provide the required DLL files from OpenImageDenoise release near the exe!
 #endif // OIDN_VERSION_MAJOR >= 2
 #endif // __has_include("OpenImageDenoise/oidn.hpp")