mirror of
https://github.com/nillerusr/source-engine.git
synced 2024-12-23 06:36:54 +00:00
322 lines
10 KiB
C++
322 lines
10 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
|
|
//
|
|
// Purpose:
|
|
//
|
|
//===========================================================================//
|
|
|
|
#include "tier0/platform.h"
|
|
#include "tier0/progressbar.h"
|
|
#include "bitmap/float_bm.h"
|
|
#include "mathlib/mathlib.h"
|
|
#include "tier2/tier2.h"
|
|
#include "tier0/memdbgon.h"
|
|
#include "mathlib/ssemath.h"
|
|
|
|
#ifdef _X360
|
|
#include "xbox/xbox_console.h"
|
|
#endif
|
|
|
|
|
|
|
|
#define PROBLEM_SIZE 1000
|
|
#define N_ITERS 100000
|
|
//#define RECORD_OUTPUT
|
|
|
|
|
|
static FourVectors g_XYZ[PROBLEM_SIZE];
|
|
static fltx4 g_CreationTime[PROBLEM_SIZE];
|
|
|
|
|
|
|
|
bool SIMDTest()
|
|
{
|
|
const Vector StartPnt(0,0,0);
|
|
const Vector MidP(0,0,100);
|
|
const Vector EndPnt(100,0,50);
|
|
|
|
// This app doesn't go through regular engine init, so init FPU/VPU math behaviour here:
|
|
SetupFPUControlWord();
|
|
TestVPUFlags();
|
|
|
|
// Initialize g_XYZ[] and g_CreationTime[]
|
|
SeedRandSIMD(1987301);
|
|
for (int i = 0;i < PROBLEM_SIZE;i++)
|
|
{
|
|
float fourStartTimes[4];
|
|
Vector fourPoints[4];
|
|
Vector offset;
|
|
for (int j = 0;j < 4;j++)
|
|
{
|
|
float t = (j + 4 * i) / (4.0f * (PROBLEM_SIZE - 1));
|
|
fourStartTimes[j] = t;
|
|
fourPoints[j] = StartPnt + t*( EndPnt - StartPnt );
|
|
offset.Random( -10.0f, +10.0f );
|
|
fourPoints[j] += offset;
|
|
}
|
|
g_XYZ[i].LoadAndSwizzle( fourPoints[0], fourPoints[1], fourPoints[2], fourPoints[3] );
|
|
g_CreationTime[i] = LoadUnalignedSIMD( fourStartTimes );
|
|
}
|
|
|
|
#ifdef RECORD_OUTPUT
|
|
char outputBuffer[1024];
|
|
Q_snprintf( outputBuffer, sizeof( outputBuffer ), "float testOutput[%d][4][3] = {\n", N_ITERS );
|
|
Warning(outputBuffer);
|
|
#endif // RECORD_OUTPUT
|
|
|
|
double STime=Plat_FloatTime();
|
|
bool bChangedSomething = false;
|
|
for(int i=0;i<N_ITERS;i++)
|
|
{
|
|
float t=i*(1.0/N_ITERS);
|
|
FourVectors * __restrict pXYZ = g_XYZ;
|
|
|
|
fltx4 * __restrict pCreationTime = g_CreationTime;
|
|
|
|
fltx4 CurTime = ReplicateX4( t );
|
|
fltx4 TimeScale = ReplicateX4( 1.0/(max(0.001, 1.0 ) ) );
|
|
|
|
// calculate radius spline
|
|
bool bConstantRadius = true;
|
|
fltx4 Rad0=ReplicateX4(2.0);
|
|
fltx4 Radm=Rad0;
|
|
fltx4 Rad1=Rad0;
|
|
|
|
fltx4 RadmMinusRad0=SubSIMD( Radm, Rad0);
|
|
fltx4 Rad1MinusRadm=SubSIMD( Rad1, Radm);
|
|
|
|
fltx4 SIMDMinDist=ReplicateX4( 2.0 );
|
|
fltx4 SIMDMinDist2=ReplicateX4( 2.0*2.0 );
|
|
|
|
fltx4 SIMDMaxDist=MaxSIMD( Rad0, MaxSIMD( Radm, Rad1 ) );
|
|
fltx4 SIMDMaxDist2=MulSIMD( SIMDMaxDist, SIMDMaxDist);
|
|
|
|
|
|
FourVectors StartP;
|
|
StartP.DuplicateVector( StartPnt );
|
|
|
|
FourVectors MiddleP;
|
|
MiddleP.DuplicateVector( MidP );
|
|
|
|
// form delta terms needed for quadratic bezier
|
|
FourVectors Delta0;
|
|
Delta0.DuplicateVector( MidP-StartPnt );
|
|
|
|
FourVectors Delta1;
|
|
Delta1.DuplicateVector( EndPnt-MidP );
|
|
int nLoopCtr = PROBLEM_SIZE;
|
|
do
|
|
{
|
|
fltx4 TScale=MinSIMD(
|
|
Four_Ones,
|
|
MulSIMD( TimeScale, SubSIMD( CurTime, *pCreationTime ) ) );
|
|
|
|
// bezier(a,b,c,t)=lerp( lerp(a,b,t),lerp(b,c,t),t)
|
|
FourVectors L0 = Delta0;
|
|
L0 *= TScale;
|
|
L0 += StartP;
|
|
|
|
FourVectors L1= Delta1;
|
|
L1 *= TScale;
|
|
L1 += MiddleP;
|
|
|
|
FourVectors Center = L1;
|
|
Center -= L0;
|
|
Center *= TScale;
|
|
Center += L0;
|
|
|
|
FourVectors pts_original = *(pXYZ);
|
|
FourVectors pts = pts_original;
|
|
pts -= Center;
|
|
|
|
// calculate radius at the point. !!speed!! - use special case for constant radius
|
|
|
|
fltx4 dist_squared= pts * pts;
|
|
fltx4 TooFarMask = CmpGtSIMD( dist_squared, SIMDMaxDist2 );
|
|
if ( ( !bConstantRadius) && ( ! IsAnyNegative( TooFarMask ) ) )
|
|
{
|
|
// need to calculate and adjust for true radius =- we've only trivially rejected note
|
|
// voodoo here - we update simdmaxdist for true radius, but not max dist^2, since
|
|
// that's used only for the trivial reject case, which we've already done
|
|
fltx4 R0=AddSIMD( Rad0, MulSIMD( RadmMinusRad0, TScale ) );
|
|
fltx4 R1=AddSIMD( Radm, MulSIMD( Rad1MinusRadm, TScale ) );
|
|
SIMDMaxDist = AddSIMD( R0, MulSIMD( SubSIMD( R1, R0 ), TScale) );
|
|
|
|
// now that we know the true radius, update our mask
|
|
TooFarMask = CmpGtSIMD( dist_squared, MulSIMD( SIMDMaxDist, SIMDMaxDist ) );
|
|
}
|
|
|
|
fltx4 TooCloseMask = CmpLtSIMD( dist_squared, SIMDMinDist2 );
|
|
fltx4 NeedAdjust = OrSIMD( TooFarMask, TooCloseMask );
|
|
if ( IsAnyNegative( NeedAdjust ) ) // any out of bounds?
|
|
{
|
|
// change squared distance into approximate rsqr root
|
|
fltx4 guess=ReciprocalSqrtEstSIMD(dist_squared);
|
|
// newton iteration for 1/sqrt(x) : y(n+1)=1/2 (y(n)*(3-x*y(n)^2));
|
|
guess=MulSIMD(guess,SubSIMD(Four_Threes,MulSIMD(dist_squared,MulSIMD(guess,guess))));
|
|
guess=MulSIMD(Four_PointFives,guess);
|
|
pts *= guess;
|
|
|
|
FourVectors clamp_far=pts;
|
|
clamp_far *= SIMDMaxDist;
|
|
clamp_far += Center;
|
|
FourVectors clamp_near=pts;
|
|
clamp_near *= SIMDMinDist;
|
|
clamp_near += Center;
|
|
pts.x = MaskedAssign( TooCloseMask, clamp_near.x, MaskedAssign( TooFarMask, clamp_far.x, pts_original.x ));
|
|
pts.y = MaskedAssign( TooCloseMask, clamp_near.y, MaskedAssign( TooFarMask, clamp_far.y, pts_original.y ));
|
|
pts.z = MaskedAssign( TooCloseMask, clamp_near.z, MaskedAssign( TooFarMask, clamp_far.z, pts_original.z ));
|
|
*(pXYZ) = pts;
|
|
bChangedSomething = true;
|
|
}
|
|
|
|
#ifdef RECORD_OUTPUT
|
|
if (nLoopCtr == 257)
|
|
{
|
|
Q_snprintf( outputBuffer, sizeof( outputBuffer ), "/*%04d:*/ { {%+14e,%+14e,%+14e}, {%+14e,%+14e,%+14e}, {%+14e,%+14e,%+14e}, {%+14e,%+14e,%+14e} },\n", i,
|
|
pXYZ->X(0), pXYZ->Y(0), pXYZ->Z(0),
|
|
pXYZ->X(1), pXYZ->Y(1), pXYZ->Z(1),
|
|
pXYZ->X(2), pXYZ->Y(2), pXYZ->Z(2),
|
|
pXYZ->X(3), pXYZ->Y(3), pXYZ->Z(3));
|
|
Warning(outputBuffer);
|
|
}
|
|
#endif // RECORD_OUTPUT
|
|
|
|
++pXYZ;
|
|
++pCreationTime;
|
|
} while ( --nLoopCtr );
|
|
}
|
|
double ETime=Plat_FloatTime()-STime;
|
|
|
|
#ifdef RECORD_OUTPUT
|
|
Q_snprintf( outputBuffer, sizeof( outputBuffer ), " };\n" );
|
|
Warning(outputBuffer);
|
|
#endif // RECORD_OUTPUT
|
|
|
|
printf("elapsed time=%f p/s=%f\n",ETime, (4.0*PROBLEM_SIZE*N_ITERS)/ETime );
|
|
return bChangedSomething;
|
|
}
|
|
|
|
|
|
#ifdef _X360
|
|
|
|
__declspec(passinreg) struct float4
|
|
{
|
|
operator __vector4 () const { return vmx; }
|
|
__vector4 vmx;
|
|
};
|
|
|
|
void OctoberXDKCompilerIssueTestCode( const fltx4 & val, fltx4 * out )
|
|
{
|
|
// UNDONE: This code demonstrates serious 360 compiler issues. XBox Developer Support has been contacted.
|
|
// The assembly contains tons of useless instructions (vector stores and supporting integer math), even in the
|
|
// below code - no use of pointers or static constants, no wrapper layers on top of the vector intrinsics.
|
|
// If/when the compiler issue is resolved, other known issues are:
|
|
// - pass vector params by const reference
|
|
// - avoid putting __vector4 in a union or an array
|
|
// - avoid default constructors, return constructed objects directly ("return VecClass(__vector4Val);")
|
|
|
|
#define DECL_ASS( _var_, _val_ ) fltx4 _var_ = _val_
|
|
//#define DECL_ASS( _var_, _val_ ) float4 _var_; _var_.vmx = _val_
|
|
//#define DECL_ASS( _var_, _val_ ) float4 _var_( _val_ )
|
|
|
|
DECL_ASS( resultx, Four_Zeros ); DECL_ASS( resulty, Four_Zeros ); DECL_ASS( resultz, Four_Zeros );
|
|
|
|
DECL_ASS( CurTime, __vmulfp( val, Four_PointFives ) );
|
|
DECL_ASS( TimeScale, val );
|
|
//fltx4 *pCreationTime = g_CreationTime;
|
|
DECL_ASS( Delta0x, val ); DECL_ASS( Delta0y, val ); DECL_ASS( Delta0z, val );
|
|
DECL_ASS( Delta1x, __vaddfp(Delta0x, Delta0x) ); DECL_ASS( Delta1y, __vaddfp(Delta0y, Delta0y) ); DECL_ASS( Delta1z, __vaddfp(Delta0z, Delta0z) );
|
|
DECL_ASS( StartPx, __vaddfp(Delta0x, Delta0x) ); DECL_ASS( StartPy, __vaddfp(Delta0y, Delta0y) ); DECL_ASS( StartPz, __vaddfp(Delta0z, Delta0z) );
|
|
DECL_ASS( MiddlePx, __vaddfp(StartPx, StartPx) ); DECL_ASS( MiddlePy, __vaddfp(StartPy, StartPy) ); DECL_ASS( MiddlePz, __vaddfp(StartPz, StartPz) );
|
|
for (int i = 0;i < 1000;i++)
|
|
{
|
|
DECL_ASS( TScale, __vsubfp( CurTime, resultx ) );//*pCreationTime );
|
|
TScale = __vmulfp( TScale, TimeScale );
|
|
TScale = __vminfp( TScale, resulty );//Four_Ones );
|
|
|
|
//resultx = __vaddfp( resultx, TScale );
|
|
//resulty = __vaddfp( resulty, TScale );
|
|
//resultz = __vaddfp( resultz, TScale );
|
|
|
|
DECL_ASS( L0x, Delta0x ); DECL_ASS( L0y, Delta0y ); DECL_ASS( L0z, Delta0z );
|
|
L0x = __vmulfp(L0x,TScale); L0y = __vmulfp(L0y,TScale); L0z = __vmulfp(L0z,TScale);
|
|
L0x = __vaddfp(StartPx,L0x); L0y = __vaddfp(StartPy,L0y); L0z = __vaddfp(StartPz,L0z);
|
|
|
|
DECL_ASS( L1x, Delta1x ); DECL_ASS( L1y, Delta1y ); DECL_ASS( L1z, Delta1z );
|
|
L1x = __vmulfp(L1x,TScale); L1y = __vmulfp(L1y,TScale); L1z = __vmulfp(L1z,TScale);
|
|
L1x = __vaddfp(MiddlePx,L1x); L1y = __vaddfp(MiddlePy,L1y); L1z = __vaddfp(MiddlePz,L1z);
|
|
|
|
L0x = __vaddfp(L0x,L1x); L0y = __vaddfp(L0y,L1y); L0z = __vaddfp(L0z,L1z);
|
|
|
|
resultx = __vaddfp( resultx, L0x );
|
|
resulty = __vaddfp( resulty, L0y );
|
|
resultz = __vaddfp( resultz, L0z );
|
|
|
|
//pCreationTime++;
|
|
}
|
|
|
|
out[0] = resultx;
|
|
out[1] = resulty;
|
|
out[2] = resultz;
|
|
}
|
|
|
|
#else // _X360
|
|
|
|
void
|
|
SSEClassTest( const fltx4 & val, fltx4 & out )
|
|
{
|
|
fltx4 result = Four_Zeros;
|
|
for (int i = 0;i < N_ITERS;i++)
|
|
{
|
|
result = SubSIMD( val, result );
|
|
result = MulSIMD( val, result );
|
|
result = AddSIMD( val, result );
|
|
result = MinSIMD( val, result );
|
|
}
|
|
FourVectors result4; result4.x = result; result4.y = result; result4.z = result;
|
|
for (int i = 0;i < N_ITERS;i++)
|
|
{
|
|
result4 *= result4;
|
|
result4 += result4;
|
|
result4 *= result4;
|
|
result4 += result4;
|
|
}
|
|
result = result4*result4;
|
|
out = result;
|
|
}
|
|
|
|
#endif // !_X360
|
|
|
|
|
|
int main(int argc,char **argv)
|
|
{
|
|
#ifndef _X360
|
|
|
|
// UNDONE: InitCommandLineProgram needs fixing for 360 (if we want to make lots of new 360 executables)
|
|
InitCommandLineProgram( argc, argv );
|
|
|
|
// This function is useful for inspecting compiler output
|
|
fltx4 result;
|
|
SSEClassTest( Four_PointFives, result );
|
|
printf("(%f,%f,%f,%f)\n", SubFloat( result, 0 ), SubFloat( result, 1 ), SubFloat( result, 2 ), SubFloat( result, 3 ) );
|
|
|
|
#else // _X360
|
|
|
|
// Wait for VXConsole, so that all debug output goes there
|
|
XBX_InitConsoleMonitor(true);
|
|
|
|
// This function is useful for inspecting compiler output
|
|
FourVectors result;
|
|
OctoberXDKCompilerIssueTestCode( Four_PointFives, (fltx4 *)&result );
|
|
printf("(%f,%f,%f,%f)\n", result.X(0), result.X(1), result.X(2), result.X(3));
|
|
printf("(%f,%f,%f,%f)\n", result.Y(0), result.Y(1), result.Y(2), result.Y(3));
|
|
printf("(%f,%f,%f,%f)\n", result.Z(0), result.Z(1), result.Z(2), result.Z(3));
|
|
|
|
#endif // _X360
|
|
|
|
// Run the perf. test
|
|
SIMDTest();
|
|
|
|
return 0;
|
|
}
|