OgrePlatformInformation.h
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00001 /*
00002 -----------------------------------------------------------------------------
00003 This source file is part of OGRE
00004     (Object-oriented Graphics Rendering Engine)
00005 For the latest info, see http://www.ogre3d.org/
00006 
00007 Copyright (c) 2000-2011 Torus Knot Software Ltd
00008 
00009 Permission is hereby granted, free of charge, to any person obtaining a copy
00010 of this software and associated documentation files (the "Software"), to deal
00011 in the Software without restriction, including without limitation the rights
00012 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00013 copies of the Software, and to permit persons to whom the Software is
00014 furnished to do so, subject to the following conditions:
00015 
00016 The above copyright notice and this permission notice shall be included in
00017 all copies or substantial portions of the Software.
00018 
00019 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00020 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00021 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00022 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00023 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00024 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00025 THE SOFTWARE.
00026 -----------------------------------------------------------------------------
00027 */
00028 #ifndef __PlatformInformation_H__
00029 #define __PlatformInformation_H__
00030 
00031 #include "OgrePrerequisites.h"
00032 
00033 namespace Ogre {
00034 //
00035 // TODO: Puts following macros into OgrePlatform.h?
00036 //
00037 
00038 /* Initial CPU stuff to set.
00039 */
00040 #define OGRE_CPU_UNKNOWN    0
00041 #define OGRE_CPU_X86        1
00042 #define OGRE_CPU_PPC        2
00043 #define OGRE_CPU_ARM        3
00044 
00045 /* Find CPU type
00046 */
00047 #if (defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))) || \
00048     (defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)))
00049 #   define OGRE_CPU OGRE_CPU_X86
00050 
00051 #elif OGRE_PLATFORM == OGRE_PLATFORM_APPLE && defined(__BIG_ENDIAN__)
00052 #   define OGRE_CPU OGRE_CPU_PPC
00053 #elif OGRE_PLATFORM == OGRE_PLATFORM_APPLE
00054 #   define OGRE_CPU OGRE_CPU_X86
00055 #elif OGRE_PLATFORM == OGRE_PLATFORM_IPHONE && (defined(__i386__) || defined(__x86_64__))
00056 #   define OGRE_CPU OGRE_CPU_X86
00057 #elif defined(__arm__)
00058 #   define OGRE_CPU OGRE_CPU_ARM
00059 #else
00060 #   define OGRE_CPU OGRE_CPU_UNKNOWN
00061 #endif
00062 
00063 /* Find how to declare aligned variable.
00064 */
00065 #if OGRE_COMPILER == OGRE_COMPILER_MSVC
00066 #   define OGRE_ALIGNED_DECL(type, var, alignment)  __declspec(align(alignment)) type var
00067 
00068 #elif OGRE_COMPILER == OGRE_COMPILER_GNUC
00069 #   define OGRE_ALIGNED_DECL(type, var, alignment)  type var __attribute__((__aligned__(alignment)))
00070 
00071 #else
00072 #   define OGRE_ALIGNED_DECL(type, var, alignment)  type var
00073 #endif
00074 
00077 #if OGRE_CPU == OGRE_CPU_X86
00078 #   define OGRE_SIMD_ALIGNMENT  16
00079 
00080 #else
00081 #   define OGRE_SIMD_ALIGNMENT  16
00082 #endif
00083 
00084 /* Declare variable aligned to SIMD alignment.
00085 */
00086 #define OGRE_SIMD_ALIGNED_DECL(type, var)   OGRE_ALIGNED_DECL(type, var, OGRE_SIMD_ALIGNMENT)
00087 
00088 /* Define whether or not Ogre compiled with SSE supports.
00089 */
00090 #if OGRE_DOUBLE_PRECISION == 0 && OGRE_CPU == OGRE_CPU_X86 && OGRE_COMPILER == OGRE_COMPILER_MSVC
00091 #   define __OGRE_HAVE_SSE  1
00092 #elif OGRE_DOUBLE_PRECISION == 0 && OGRE_CPU == OGRE_CPU_X86 && OGRE_COMPILER == OGRE_COMPILER_GNUC && OGRE_PLATFORM != OGRE_PLATFORM_APPLE_IOS
00093 #   define __OGRE_HAVE_SSE  1
00094 #endif
00095 
00096 /* Define whether or not Ogre compiled with VFP supports.
00097  */
00098 #if OGRE_DOUBLE_PRECISION == 0 && OGRE_CPU == OGRE_CPU_ARM && OGRE_COMPILER == OGRE_COMPILER_GNUC && defined(__ARM_ARCH_6K__) && defined(__VFP_FP__)
00099 #   define __OGRE_HAVE_VFP  1
00100 #endif
00101 
00102 /* Define whether or not Ogre compiled with NEON supports.
00103  */
00104 #if OGRE_DOUBLE_PRECISION == 0 && OGRE_CPU == OGRE_CPU_ARM && OGRE_COMPILER == OGRE_COMPILER_GNUC && defined(__ARM_ARCH_7A__) && defined(__ARM_NEON__)
00105 #   define __OGRE_HAVE_NEON  1
00106 #endif
00107 
00108 #ifndef __OGRE_HAVE_SSE
00109 #   define __OGRE_HAVE_SSE  0
00110 #endif
00111 
00112 #ifndef __OGRE_HAVE_VFP
00113 #   define __OGRE_HAVE_VFP  0
00114 #endif
00115 
00116 #ifndef __OGRE_HAVE_NEON
00117 #   define __OGRE_HAVE_NEON  0
00118 #endif
00119     
00141     class _OgreExport PlatformInformation
00142     {
00143     public:
00144 
00146         enum CpuFeatures
00147         {
00148 #if OGRE_CPU == OGRE_CPU_X86
00149             CPU_FEATURE_SSE         = 1 << 0,
00150             CPU_FEATURE_SSE2        = 1 << 1,
00151             CPU_FEATURE_SSE3        = 1 << 2,
00152             CPU_FEATURE_MMX         = 1 << 3,
00153             CPU_FEATURE_MMXEXT      = 1 << 4,
00154             CPU_FEATURE_3DNOW       = 1 << 5,
00155             CPU_FEATURE_3DNOWEXT    = 1 << 6,
00156             CPU_FEATURE_CMOV        = 1 << 7,
00157             CPU_FEATURE_TSC         = 1 << 8,
00158             CPU_FEATURE_FPU         = 1 << 9,
00159             CPU_FEATURE_PRO         = 1 << 10,
00160             CPU_FEATURE_HTT         = 1 << 11,
00161 #elif OGRE_CPU == OGRE_CPU_ARM
00162             CPU_FEATURE_VFP         = 1 << 12,
00163             CPU_FEATURE_NEON        = 1 << 13,
00164 #endif
00165 
00166             CPU_FEATURE_NONE        = 0
00167         };
00168 
00174         static const String& getCpuIdentifier(void);
00175 
00181         static uint getCpuFeatures(void);
00182 
00188         static bool hasCpuFeature(CpuFeatures feature);
00189 
00190 
00192         static void log(Log* pLog);
00193 
00194     };
00198 }
00199 
00200 #endif  // __PlatformInformation_H__

Copyright © 2008 Torus Knot Software Ltd
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Last modified Sat Jan 14 2012 18:40:43