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OgrePlatformInformation.h - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\ogre\include\OgrePlatformInformation.h
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/* ----------------------------------------------------------------------------- This source file is part of OGRE (Object-oriented Graphics Rendering Engine) For the latest info, see http://www.ogre3d.org/ Copyright (c) 2000-2006 Torus Knot Software Ltd Also see acknowledgements in Readme.html This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA, or go to http://www.gnu.org/copyleft/lesser.txt. You may alternatively use this source under the terms of a specific version of the OGRE Unrestricted License provided you have obtained such a license from Torus Knot Software Ltd. ----------------------------------------------------------------------------- */ #ifndef __PlatformInformation_H__ #define __PlatformInformation_H__ #include "OgrePrerequisites.h" namespace Ogre { // // TODO: Puts following macros into OgrePlatform.h? // /* Initial CPU stuff to set. */ #define OGRE_CPU_UNKNOWN 0 #define OGRE_CPU_X86 1 #define OGRE_CPU_PPC 2 /* Find CPU type */ #if (defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))) || \ (defined(__GNUC__) && (defined(__i386__) /*|| defined(__x86_64__)*/)) # define OGRE_CPU OGRE_CPU_X86 #elif OGRE_PLATFORM == OGRE_PLATFORM_APPLE && defined(__BIG_ENDIAN__) # define OGRE_CPU OGRE_CPU_PPC #elif OGRE_PLATFORM == OGRE_PLATFORM_APPLE # define OGRE_CPU OGRE_CPU_X86 #else # define OGRE_CPU OGRE_CPU_UNKNOWN #endif /* Find how to declare aligned variable. */ #if OGRE_COMPILER == OGRE_COMPILER_MSVC # define OGRE_ALIGNED_DECL(type, var, alignment) __declspec(align(alignment)) type var #elif OGRE_COMPILER == OGRE_COMPILER_GNUC # define OGRE_ALIGNED_DECL(type, var, alignment) type var __attribute__((__aligned__(alignment))) #else # define OGRE_ALIGNED_DECL(type, var, alignment) type var #endif /** Find perfect alignment (should supports SIMD alignment if SIMD available) */ #if OGRE_CPU == OGRE_CPU_X86 # define OGRE_SIMD_ALIGNMENT 16 #else # define OGRE_SIMD_ALIGNMENT 16 #endif /* Declare variable aligned to SIMD alignment. */ #define OGRE_SIMD_ALIGNED_DECL(type, var) OGRE_ALIGNED_DECL(type, var, OGRE_SIMD_ALIGNMENT) /* Define whether or not Ogre compiled with SSE supports. */ #if OGRE_DOUBLE_PRECISION == 0 && OGRE_CPU == OGRE_CPU_X86 && OGRE_COMPILER == OGRE_COMPILER_MSVC # define __OGRE_HAVE_SSE 1 #elif OGRE_DOUBLE_PRECISION == 0 && OGRE_CPU == OGRE_CPU_X86 && OGRE_COMPILER == OGRE_COMPILER_GNUC # define __OGRE_HAVE_SSE 1 #endif #ifndef __OGRE_HAVE_SSE # define __OGRE_HAVE_SSE 0 #endif /** Class which provides the run-time platform information Ogre runs on. @remarks Ogre is designed to be platform-independent, but there some platform and run-time environment specific optimised functions are built-in for maximise performance, and those special optimised routines are need to determine run-time environment for select variant executing path. @par This class manages that provides a couple of functions to determine platform information of the run-time environment. @note This class is supposed to use by advanced user only. */ class _OgreExport PlatformInformation { public: /// Enum describing the different CPU features we want to check for, platform-dependent enum CpuFeatures { #if OGRE_CPU == OGRE_CPU_X86 CPU_FEATURE_SSE = 1 << 0, CPU_FEATURE_SSE2 = 1 << 1, CPU_FEATURE_SSE3 = 1 << 2, CPU_FEATURE_MMX = 1 << 3, CPU_FEATURE_MMXEXT = 1 << 4, CPU_FEATURE_3DNOW = 1 << 5, CPU_FEATURE_3DNOWEXT = 1 << 6, CPU_FEATURE_CMOV = 1 << 7, CPU_FEATURE_TSC = 1 << 8, CPU_FEATURE_FPU = 1 << 9, CPU_FEATURE_PRO = 1 << 10, CPU_FEATURE_HTT = 1 << 11, #endif CPU_FEATURE_NONE = 0 }; /** Gets a string of the CPU identifier. @note Actual detecting are performs in the first time call to this function, and then all future calls with return internal cached value. */ static const String& getCpuIdentifier(void); /** Gets a or-masked of enum CpuFeatures that are supported by the CPU. @note Actual detecting are performs in the first time call to this function, and then all future calls with return internal cached value. */ static uint getCpuFeatures(void); /** Gets whether a specific feature is supported by the CPU. @note Actual detecting are performs in the first time call to this function, and then all future calls with return internal cached value. */ static bool hasCpuFeature(CpuFeatures feature); /** Write the CPU information to the passed in Log */ static void log(Log* pLog); }; } #endif // __PlatformInformation_H__
OgrePlatformInformation.h
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