New lightmapper

-Added LocalVector (needed it)
-Added stb_rect_pack (It's pretty cool, we could probably use it for other stuff too)
-Fixes and changes all around the place
-Added library for 128 bits fixed point (required for Delaunay3D)

thirdparty/oidn/common/platform.cpp

@@ -0,0 +1,114 @@
+// ======================================================================== //
+// Copyright 2009-2019 Intel Corporation                                    //
+//                                                                          //
+// Licensed under the Apache License, Version 2.0 (the "License");          //
+// you may not use this file except in compliance with the License.         //
+// You may obtain a copy of the License at                                  //
+//                                                                          //
+//     http://www.apache.org/licenses/LICENSE-2.0                           //
+//                                                                          //
+// Unless required by applicable law or agreed to in writing, software      //
+// distributed under the License is distributed on an "AS IS" BASIS,        //
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. //
+// See the License for the specific language governing permissions and      //
+// limitations under the License.                                           //
+// ======================================================================== //
+
+#include "platform.h"
+
+namespace oidn {
+
+  // ----------------------------------------------------------------------------
+  // Common functions
+  // ----------------------------------------------------------------------------
+
+  void* alignedMalloc(size_t size, size_t alignment)
+  {
+    if (size == 0)
+      return nullptr;
+
+    assert((alignment & (alignment-1)) == 0);
+    void* ptr = _mm_malloc(size, alignment);
+
+    if (ptr == nullptr)
+      throw std::bad_alloc();
+
+    return ptr;
+  }
+
+  void alignedFree(void* ptr)
+  {
+    if (ptr)
+      _mm_free(ptr);
+  }
+
+  // ----------------------------------------------------------------------------
+  // System information
+  // ----------------------------------------------------------------------------
+
+  std::string getPlatformName()
+  {
+    std::string name;
+
+  #if defined(__linux__)
+    name = "Linux";
+  #elif defined(__FreeBSD__)
+    name = "FreeBSD";
+  #elif defined(__CYGWIN__)
+    name = "Cygwin";
+  #elif defined(_WIN32)
+    name = "Windows";
+  #elif defined(__APPLE__)
+    name = "macOS";
+  #elif defined(__unix__)
+    name = "Unix";
+  #else
+    return "Unknown";
+  #endif
+
+  #if defined(__x86_64__) || defined(_M_X64) || defined(__ia64__) || defined(__aarch64__)
+    name += " (64-bit)";
+  #else
+    name += " (32-bit)";
+  #endif
+
+    return name;
+  }
+
+  std::string getCompilerName()
+  {
+  #if defined(__INTEL_COMPILER)
+    int mayor = __INTEL_COMPILER / 100 % 100;
+    int minor = __INTEL_COMPILER % 100;
+    std::string version = "Intel Compiler ";
+    version += toString(mayor);
+    version += "." + toString(minor);
+  #if defined(__INTEL_COMPILER_UPDATE)
+    version += "." + toString(__INTEL_COMPILER_UPDATE);
+  #endif
+    return version;
+  #elif defined(__clang__)
+    return "Clang " __clang_version__;
+  #elif defined(__GNUC__)
+    return "GCC " __VERSION__;
+  #elif defined(_MSC_VER)
+    std::string version = toString(_MSC_FULL_VER);
+    version.insert(4, ".");
+    version.insert(9, ".");
+    version.insert(2, ".");
+    return "Visual C++ Compiler " + version;
+  #else
+    return "Unknown";
+  #endif
+  }
+
+  std::string getBuildName()
+  {
+  #if defined(NDEBUG)
+    return "Release";
+  #else
+    return "Debug";
+  #endif
+  }
+
+} // namespace oidn