Apple contribution for OSX SSE and iOS NEON optimizations unit tests, thanks to Jordan Hubbard, Ian Ollmann and Hristo Hristov.
For OSX: cd build ./premake_osx xcode4 for iOS: cd build ./ios_build.sh ./ios_run.sh Also integrated the branches/StackAllocation to make it easier to multi-thread collision detection in the near future. It avoids changing the btCollisionObject while performing collision detection. As this is a large patch, some stuff might be temporarily broken, I'll keep an eye out on issues.
This commit is contained in:
erwin.coumans
194
Test/Source/Tests/Test_v3rotate.cpp
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194
Test/Source/Tests/Test_v3rotate.cpp
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//
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// Test_v3rotate.cpp
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// BulletTest
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//
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// Copyright (c) 2011 Apple Inc.
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//
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#include "LinearMath/btScalar.h"
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#if defined (BT_USE_SSE_IN_API) || defined (BT_USE_NEON)
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#include "Test_v3rotate.h"
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#include "vector.h"
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#include "Utils.h"
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#include "main.h"
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#include <math.h>
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#include <string.h>
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#include <LinearMath/btVector3.h>
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// reference code for testing purposes
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static inline
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btVector3& v3rotate_ref(
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btVector3& v0,
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btVector3& v1,
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const btScalar& s);
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#define LOOPCOUNT 2048
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#define NUM_CYCLES 1000
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int Test_v3rotate(void)
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{
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btVector3 v1, v2;
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float s;
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float x,y,z,w;
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// Init the data
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x = RANDF_01;
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y = RANDF_01;
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z = RANDF_01;
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w = BT_NAN; // w channel NaN
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v1.setValue(x,y,z);
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v1.setW(w);
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x = RANDF_01;
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y = RANDF_01;
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z = RANDF_01;
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v2.setValue(x,y,z);
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v2.setW(w);
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s = RANDF_01 * (float) SIMD_PI;
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btVector3 correct_res, test_res;
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{
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float vNaN = BT_NAN;
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correct_res.setValue(vNaN, vNaN, vNaN);
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test_res.setValue(vNaN, vNaN, vNaN);
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test_res = v1.rotate(v2, s);
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correct_res = v3rotate_ref(v1, v2, s);
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if( fabs(correct_res.m_floats[0] - test_res.m_floats[0]) +
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fabs(correct_res.m_floats[1] - test_res.m_floats[1]) +
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fabs(correct_res.m_floats[2] - test_res.m_floats[2]) > FLT_EPSILON * 4)
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{
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vlog( "Error - v3rotate result error! "
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"\ncorrect = (%10.4f, %10.4f, %10.4f) "
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"\ntested = (%10.4f, %10.4f, %10.4f) \n",
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correct_res.m_floats[0], correct_res.m_floats[1], correct_res.m_floats[2],
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test_res.m_floats[0], test_res.m_floats[1], test_res.m_floats[2]);
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return 1;
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}
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}
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#define DATA_SIZE LOOPCOUNT
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btVector3 vec3_arr0[DATA_SIZE];
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btVector3 vec3_arr1[DATA_SIZE];
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btScalar s_arr[DATA_SIZE];
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uint64_t scalarTime;
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uint64_t vectorTime;
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size_t j, k;
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{
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uint64_t startTime, bestTime, currentTime;
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bestTime = -1LL;
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scalarTime = 0;
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for (j = 0; j < NUM_CYCLES; j++)
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{
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for( k = 0; k < DATA_SIZE; k++ )
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{
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x = RANDF_01;
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y = RANDF_01;
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z = RANDF_01;
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vec3_arr0[k].setValue(x,y,z);
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vec3_arr0[k].setW(w);
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x = RANDF_01;
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y = RANDF_01;
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z = RANDF_01;
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vec3_arr1[k].setValue(x,y,z);
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vec3_arr1[k].setW(w);
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s_arr[k] = RANDF_01 * (float)SIMD_PI;
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}
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startTime = ReadTicks();
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for( k = 0; k < LOOPCOUNT; k++ )
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{
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vec3_arr0[k] = v3rotate_ref(vec3_arr0[k], vec3_arr1[k], s_arr[k]);
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}
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currentTime = ReadTicks() - startTime;
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scalarTime += currentTime;
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if( currentTime < bestTime )
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bestTime = currentTime;
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}
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if( 0 == gReportAverageTimes )
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scalarTime = bestTime;
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else
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scalarTime /= NUM_CYCLES;
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}
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{
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uint64_t startTime, bestTime, currentTime;
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bestTime = -1LL;
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vectorTime = 0;
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for (j = 0; j < NUM_CYCLES; j++)
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{
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for( k = 0; k < DATA_SIZE; k++ )
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{
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x = RANDF_01;
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y = RANDF_01;
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z = RANDF_01;
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vec3_arr0[k].setValue(x,y,z);
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vec3_arr0[k].setW(w);
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x = RANDF_01;
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y = RANDF_01;
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z = RANDF_01;
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vec3_arr1[k].setValue(x,y,z);
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vec3_arr1[k].setW(w);
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s_arr[k] = RANDF_01 * (float)SIMD_PI;
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}
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startTime = ReadTicks();
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for( k = 0; k < LOOPCOUNT; k++ )
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{
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vec3_arr0[k ] = vec3_arr0[k ].rotate(vec3_arr1[k ], s_arr[k]);
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}
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currentTime = ReadTicks() - startTime;
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vectorTime += currentTime;
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if( currentTime < bestTime )
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bestTime = currentTime;
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}
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if( 0 == gReportAverageTimes )
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vectorTime = bestTime;
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else
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vectorTime /= NUM_CYCLES;
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}
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vlog( "Timing:\n" );
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vlog( " \t scalar\t vector\n" );
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vlog( " \t%10.4f\t%10.4f\n", TicksToCycles( scalarTime ) / LOOPCOUNT,
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TicksToCycles( vectorTime ) / LOOPCOUNT );
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return 0;
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}
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static inline
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btVector3&
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v3rotate_ref(
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btVector3& v0,
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btVector3& wAxis,
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const btScalar& _angle)
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{
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btVector3 o = wAxis * wAxis.dot( v0 );
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btVector3 _x = v0 - o;
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btVector3 _y;
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_y = wAxis.cross( v0 );
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v0 = o + _x * cosf( _angle ) + _y * sinf( _angle );
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return v0;
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}
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#endif //BT_USE_SSE
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