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Diffstat (limited to 'indra/llmath/llv4math.h')
| -rw-r--r-- | indra/llmath/llv4math.h | 141 |
1 files changed, 0 insertions, 141 deletions
diff --git a/indra/llmath/llv4math.h b/indra/llmath/llv4math.h deleted file mode 100644 index 5f403ba526..0000000000 --- a/indra/llmath/llv4math.h +++ /dev/null @@ -1,141 +0,0 @@ -/** - * @file llv4math.h - * @brief LLV4* class header file - vector processor enabled math - * - * $LicenseInfo:firstyear=2007&license=viewerlgpl$ - * Second Life Viewer Source Code - * Copyright (C) 2010, Linden Research, Inc. - * - * This library 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; - * version 2.1 of the License only. - * - * This library 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 library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA - * $/LicenseInfo$ - */ - -#ifndef LL_LLV4MATH_H -#define LL_LLV4MATH_H - -// *NOTE: We do not support SSE acceleration on Windows builds. -// Our minimum specification for the viewer includes 1 GHz Athlon processors, -// which covers the Athlon Thunderbird series that does not support SSE. -// -// Our header files include statements like this -// const F32 HAVOK_TIMESTEP = 1.f / 45.f; -// This creates "globals" that are included in each .obj file. If a single -// .cpp file has SSE code generation turned on (eg, llviewerjointmesh_sse.cpp) -// these globals will be initialized using SSE instructions. This causes SL -// to crash before main() on processors without SSE. Untangling all these -// headers/variables is too much work for the small performance gains of -// vectorization. -// -// Therefore we only support vectorization on builds where the everything is -// built with SSE or Altivec. See https://jira.secondlife.com/browse/VWR-1610 -// and https://jira.lindenlab.com/browse/SL-47720 for details. -// -// Sorry the code is such a mess. JC - -//----------------------------------------------------------------------------- -//----------------------------------------------------------------------------- -// LLV4MATH - GNUC -//----------------------------------------------------------------------------- -//----------------------------------------------------------------------------- - -#if LL_GNUC && __GNUC__ >= 4 && __SSE__ - -#define LL_VECTORIZE 1 - -#if LL_DARWIN - -#include <Accelerate/Accelerate.h> -#include <xmmintrin.h> -typedef vFloat V4F32; - -#else - -#include <xmmintrin.h> -typedef float V4F32 __attribute__((vector_size(16))); - -#endif - -#endif -#if LL_GNUC - -#define LL_LLV4MATH_ALIGN_PREFIX -#define LL_LLV4MATH_ALIGN_POSTFIX __attribute__((aligned(16))) - -#endif - -//----------------------------------------------------------------------------- -//----------------------------------------------------------------------------- -// LLV4MATH - MSVC -//----------------------------------------------------------------------------- -//----------------------------------------------------------------------------- - -// Only vectorize if the entire Windows build uses SSE. -// _M_IX86_FP is set when SSE code generation is turned on, and I have -// confirmed this in VS2003, VS2003 SP1, and VS2005. JC -#if LL_MSVC && _M_IX86_FP - -#define LL_VECTORIZE 1 - -#include <xmmintrin.h> - -typedef __m128 V4F32; - -#endif -#if LL_MSVC - -#define LL_LLV4MATH_ALIGN_PREFIX __declspec(align(16)) -#define LL_LLV4MATH_ALIGN_POSTFIX - -#endif - -//----------------------------------------------------------------------------- -//----------------------------------------------------------------------------- -// LLV4MATH - default - no vectorization -//----------------------------------------------------------------------------- -//----------------------------------------------------------------------------- - -#if !LL_VECTORIZE - -#define LL_VECTORIZE 0 - -struct V4F32 { F32 __pad__[4]; }; - -inline F32 llv4lerp(F32 a, F32 b, F32 w) { return ( b - a ) * w + a; } - -#endif - -#ifndef LL_LLV4MATH_ALIGN_PREFIX -# define LL_LLV4MATH_ALIGN_PREFIX -#endif -#ifndef LL_LLV4MATH_ALIGN_POSTFIX -# define LL_LLV4MATH_ALIGN_POSTFIX -#endif - -//----------------------------------------------------------------------------- -//----------------------------------------------------------------------------- -// LLV4MATH -//----------------------------------------------------------------------------- -//----------------------------------------------------------------------------- - - -#define LLV4_NUM_AXIS 4 - -class LLV4Vector3; -class LLV4Matrix3; -class LLV4Matrix4; - -#endif |