/*
* Copyright (c) 2008-2023 Jonathan Schleifer <js@nil.im>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
#import "OFMatrix4x4.h"
#import "OFString.h"
#import "OFSystemInfo.h"
#import "OFOnce.h"
static const float identityValues[4][4] = {
{ 1, 0, 0, 0 },
{ 0, 1, 0, 0 },
{ 0, 0, 1, 0 },
{ 0, 0, 0, 1 }
};
@implementation OFMatrix4x4
#if defined(OF_AMD64) || defined(OF_X86)
# ifndef __clang__
# pragma GCC push_options
# pragma GCC target("3dnow")
# endif
static void
multiplyWithMatrix_enhanced3DNow(OFMatrix4x4 *self, SEL _cmd,
OFMatrix4x4 *matrix)
{
float result[4][4];
for (uint_fast8_t i = 0; i < 4; i++) {
for (uint_fast8_t j = 0; j < 4; j++) {
__asm__ (
"movd (%2), %%mm0\n\t"
"punpckldq 16(%2), %%mm0\n\t"
"pfmul (%1), %%mm0\n\t"
"movd 32(%2), %%mm1\n\t"
"punpckldq 48(%2), %%mm1\n\t"
"pfmul 8(%1), %%mm1\n\t"
"pfadd %%mm1, %%mm0\n\t"
"pswapd %%mm0, %%mm1\n\t"
"pfadd %%mm1, %%mm0\n\t"
"movd %%mm0, %0"
:: "m"(result[i][j]), "r"(&matrix->_values[i][0]),
"r"(&self->_values[0][j])
: "mm0", "mm1", "memory"
);
}
}
__asm__ ("femms");
memcpy(self->_values, result, sizeof(result));
}
static void
multiplyWithMatrix_3DNow(OFMatrix4x4 *self, SEL _cmd, OFMatrix4x4 *matrix)
{
float result[4][4];
for (uint_fast8_t i = 0; i < 4; i++) {
for (uint_fast8_t j = 0; j < 4; j++) {
__asm__ (
"movd (%2), %%mm0\n\t"
"punpckldq 16(%2), %%mm0\n\t"
"pfmul (%1), %%mm0\n\t"
"movd 32(%2), %%mm1\n\t"
"punpckldq 48(%2), %%mm1\n\t"
"pfmul 8(%1), %%mm1\n\t"
"pfadd %%mm1, %%mm0\n\t"
"movq %%mm0, %%mm1\n\t"
"psrlq $32, %%mm1\n\t"
"pfadd %%mm1, %%mm0\n\t"
"movd %%mm0, %0"
:: "m"(result[i][j]), "r"(&matrix->_values[i][0]),
"r"(&self->_values[0][j])
: "mm0", "mm1", "memory"
);
}
}
__asm__ ("femms");
memcpy(self->_values, result, sizeof(result));
}
static OFVector4D
transformedVector_enhanced3DNow(OFMatrix4x4 *self, SEL _cmd, OFVector4D vector)
{
OFVector4D result;
__asm__ (
"movq (%2), %%mm0\n\t"
"movq 8(%2), %%mm1\n"
"\n\t"
"movq %%mm0, %%mm2\n\t"
"movq %%mm1, %%mm3\n\t"
"pfmul (%1), %%mm2\n\t"
"pfmul 8(%1), %%mm3\n\t"
"pfadd %%mm3, %%mm2\n\t"
"pswapd %%mm2, %%mm3\n\t"
"pfadd %%mm3, %%mm2\n"
"\n\t"
"movq %%mm0, %%mm3\n\t"
"movq %%mm1, %%mm4\n\t"
"pfmul 16(%1), %%mm3\n\t"
"pfmul 24(%1), %%mm4\n\t"
"pfadd %%mm4, %%mm3\n\t"
"pswapd %%mm3, %%mm4\n\t"
"pfadd %%mm4, %%mm3\n"
"\n\t"
"punpckldq %%mm3, %%mm2\n\t"
"movq %%mm2, (%0)\n"
"\n\t"
"movq %%mm0, %%mm2\n\t"
"movq %%mm1, %%mm3\n\t"
"pfmul 32(%1), %%mm2\n\t"
"pfmul 40(%1), %%mm3\n\t"
"pfadd %%mm3, %%mm2\n\t"
"pswapd %%mm2, %%mm3\n\t"
"pfadd %%mm3, %%mm2\n"
"\n\t"
"pfmul 48(%1), %%mm0\n\t"
"pfmul 56(%1), %%mm1\n\t"
"pfadd %%mm1, %%mm0\n\t"
"pswapd %%mm0, %%mm1\n\t"
"pfadd %%mm1, %%mm0\n"
"\n\t"
"punpckldq %%mm0, %%mm2\n\t"
"movq %%mm2, 8(%0)\n"
"\n\t"
"femms"
:: "r"(&result), "r"(&self->_values), "r"(&vector)
: "mm0", "mm1", "mm2", "mm3", "mm4", "memory"
);
return result;
}
static OFVector4D
transformedVector_3DNow(OFMatrix4x4 *self, SEL _cmd, OFVector4D vector)
{
OFVector4D result;
__asm__ (
"movq (%2), %%mm0\n\t"
"movq 8(%2), %%mm1\n"
"\n\t"
"movq %%mm0, %%mm2\n\t"
"movq %%mm1, %%mm3\n\t"
"pfmul (%1), %%mm2\n\t"
"pfmul 8(%1), %%mm3\n\t"
"pfadd %%mm3, %%mm2\n\t"
"movq %%mm2, %%mm3\n\t"
"psrlq $32, %%mm3\n\t"
"pfadd %%mm3, %%mm2\n"
"\n\t"
"movq %%mm0, %%mm3\n\t"
"movq %%mm1, %%mm4\n\t"
"pfmul 16(%1), %%mm3\n\t"
"pfmul 24(%1), %%mm4\n\t"
"pfadd %%mm4, %%mm3\n\t"
"movq %%mm3, %%mm4\n\t"
"psrlq $32, %%mm4\n\t"
"pfadd %%mm4, %%mm3\n"
"\n\t"
"punpckldq %%mm3, %%mm2\n\t"
"movq %%mm2, (%0)\n"
"\n\t"
"movq %%mm0, %%mm2\n\t"
"movq %%mm1, %%mm3\n\t"
"pfmul 32(%1), %%mm2\n\t"
"pfmul 40(%1), %%mm3\n\t"
"pfadd %%mm3, %%mm2\n\t"
"movq %%mm2, %%mm3\n\t"
"psrlq $32, %%mm3\n\t"
"pfadd %%mm3, %%mm2\n"
"\n\t"
"pfmul 48(%1), %%mm0\n\t"
"pfmul 56(%1), %%mm1\n\t"
"pfadd %%mm1, %%mm0\n\t"
"movq %%mm0, %%mm1\n\t"
"psrlq $32, %%mm1\n\t"
"pfadd %%mm1, %%mm0\n"
"\n\t"
"punpckldq %%mm0, %%mm2\n\t"
"movq %%mm2, 8(%0)\n"
"\n\t"
"femms"
:: "r"(&result), "r"(&self->_values), "r"(&vector)
: "mm0", "mm1", "mm2", "mm3", "mm4", "memory"
);
return result;
}
# ifndef __clang__
# pragma GCC pop_options
# endif
+ (void)initialize
{
const char *typeEncoding;
if (self != [OFMatrix4x4 class])
return;
# define REPLACE(selector, func) \
typeEncoding = method_getTypeEncoding( \
class_getInstanceMethod(self, selector)); \
class_replaceMethod(self, selector, (IMP)func, typeEncoding);
if ([OFSystemInfo supportsEnhanced3DNow]) {
REPLACE(@selector(multiplyWithMatrix:),
multiplyWithMatrix_enhanced3DNow)
REPLACE(@selector(transformedVector:),
transformedVector_enhanced3DNow)
} else if ([OFSystemInfo supports3DNow]) {
REPLACE(@selector(multiplyWithMatrix:),
multiplyWithMatrix_3DNow)
REPLACE(@selector(transformedVector:), transformedVector_3DNow)
}
# undef REPLACE
}
#endif
+ (OFMatrix4x4 *)identityMatrix
{
return [[[OFMatrix4x4 alloc]
initWithValues: identityValues] autorelease];
}
+ (instancetype)matrixWithValues: (const float [4][4])values
{
return [[[self alloc] initWithValues: values] autorelease];
}
- (instancetype)init
{
OF_INVALID_INIT_METHOD
}
- (instancetype)initWithValues: (const float [4][4])values
{
self = [super init];
memcpy(_values, values, sizeof(_values));
return self;
}
- (float (*)[4])values
{
return _values;
}
- (instancetype)copy
{
return [[OFMatrix4x4 alloc]
initWithValues: (const float (*)[4])_values];
}
- (bool)isEqual: (OFMatrix4x4 *)matrix
{
if (![matrix isKindOfClass: [OFMatrix4x4 class]])
return false;
return (memcmp(_values, matrix->_values, sizeof(_values)) == 0);
}
- (unsigned long)hash
{
unsigned long hash;
OFHashInit(&hash);
for (uint_fast8_t i = 0; i < 4; i++)
for (uint_fast8_t j = 0; j < 4; j++)
OFHashAddHash(&hash, OFFloatToRawUInt32(_values[i][j]));
OFHashFinalize(&hash);
return hash;
}
- (void)multiplyWithMatrix: (OFMatrix4x4 *)matrix
{
float result[4][4];
for (uint_fast8_t i = 0; i < 4; i++)
for (uint_fast8_t j = 0; j < 4; j++)
result[i][j] =
matrix->_values[i][0] * _values[0][j] +
matrix->_values[i][1] * _values[1][j] +
matrix->_values[i][2] * _values[2][j] +
matrix->_values[i][3] * _values[3][j];
memcpy(_values, result, sizeof(result));
}
- (void)translateWithVector: (OFVector3D)vector
{
OFMatrix4x4 *translation = [[OFMatrix4x4 alloc] initWithValues:
(const float [4][4]){
{ 1, 0, 0, vector.x },
{ 0, 1, 0, vector.y },
{ 0, 0, 1, vector.z },
{ 0, 0, 0, 1 }
}];
[self multiplyWithMatrix: translation];
[translation release];
}
- (void)scaleWithVector: (OFVector3D)vector
{
OFMatrix4x4 *scale = [[OFMatrix4x4 alloc] initWithValues:
(const float [4][4]){
{ vector.x, 0, 0, 0 },
{ 0, vector.y, 0, 0 },
{ 0, 0, vector.z, 0 },
{ 0, 0, 0, 1 }
}];
[self multiplyWithMatrix: scale];
[scale release];
}
- (OFVector4D)transformedVector: (OFVector4D)vector
{
return OFMakeVector4D(
_values[0][0] * vector.x + _values[0][1] * vector.y +
_values[0][2] * vector.z + _values[0][3] * vector.w,
_values[1][0] * vector.x + _values[1][1] * vector.y +
_values[1][2] * vector.z + _values[1][3] * vector.w,
_values[2][0] * vector.x + _values[2][1] * vector.y +
_values[2][2] * vector.z + _values[2][3] * vector.w,
_values[3][0] * vector.x + _values[3][1] * vector.y +
_values[3][2] * vector.z + _values[3][3] * vector.w);
}
- (OFString *)description
{
return [OFString stringWithFormat:
@"<OFMatrix4x4: {\n"
@"\t%g %g %g %g\n"
@"\t%g %g %g %g\n"
@"\t%g %g %g %g\n"
@"\t%g %g %g %g\n"
@"}>",
_values[0][0], _values[0][1], _values[0][2], _values[0][3],
_values[1][0], _values[1][1], _values[1][2], _values[1][3],
_values[2][0], _values[2][1], _values[2][2], _values[2][3],
_values[3][0], _values[3][1], _values[3][2], _values[3][3]];
}
@end