mirror of
https://github.com/DrBeef/Raze.git
synced 2024-11-15 17:01:51 +00:00
243 lines
7.9 KiB
C++
243 lines
7.9 KiB
C++
// "Build Engine & Tools" Copyright (c) 1993-1997 Ken Silverman
|
|
// Ken Silverman's official web site: "http://www.advsys.net/ken"
|
|
// See the included license file "BUILDLIC.TXT" for license info.
|
|
//
|
|
// This file has been modified from Ken Silverman's original release
|
|
// by Jonathon Fowler (jf@jonof.id.au)
|
|
// by the EDuke32 team (development@voidpoint.com)
|
|
|
|
#ifndef pragmas_h_
|
|
#define pragmas_h_
|
|
|
|
|
|
#define EDUKE32_GENERATE_PRAGMAS \
|
|
EDUKE32_SCALER_PRAGMA(1) EDUKE32_SCALER_PRAGMA(2) EDUKE32_SCALER_PRAGMA(3) EDUKE32_SCALER_PRAGMA(4) \
|
|
EDUKE32_SCALER_PRAGMA(5) EDUKE32_SCALER_PRAGMA(6) EDUKE32_SCALER_PRAGMA(7) EDUKE32_SCALER_PRAGMA(8) \
|
|
EDUKE32_SCALER_PRAGMA(9) EDUKE32_SCALER_PRAGMA(10) EDUKE32_SCALER_PRAGMA(11) EDUKE32_SCALER_PRAGMA(12) \
|
|
EDUKE32_SCALER_PRAGMA(13) EDUKE32_SCALER_PRAGMA(14) EDUKE32_SCALER_PRAGMA(15) EDUKE32_SCALER_PRAGMA(16) \
|
|
EDUKE32_SCALER_PRAGMA(17) EDUKE32_SCALER_PRAGMA(18) EDUKE32_SCALER_PRAGMA(19) EDUKE32_SCALER_PRAGMA(20) \
|
|
EDUKE32_SCALER_PRAGMA(21) EDUKE32_SCALER_PRAGMA(22) EDUKE32_SCALER_PRAGMA(23) EDUKE32_SCALER_PRAGMA(24) \
|
|
EDUKE32_SCALER_PRAGMA(25) EDUKE32_SCALER_PRAGMA(26) EDUKE32_SCALER_PRAGMA(27) EDUKE32_SCALER_PRAGMA(28) \
|
|
EDUKE32_SCALER_PRAGMA(29) EDUKE32_SCALER_PRAGMA(30) EDUKE32_SCALER_PRAGMA(31)
|
|
|
|
extern int32_t reciptable[2048], fpuasm;
|
|
|
|
// break the C version of divscale out from the others
|
|
// because asm version overflows in drawmapview()
|
|
|
|
#define qw(x) ((int64_t)(x)) // quadword cast
|
|
#define dw(x) ((int32_t)(x)) // doubleword cast
|
|
#define wo(x) ((int16_t)(x)) // word cast
|
|
#define by(x) ((uint8_t)(x)) // byte cast
|
|
|
|
#define DIVTABLESIZE 16384
|
|
|
|
extern libdivide::libdivide_s64_t divtable64[DIVTABLESIZE];
|
|
extern libdivide::libdivide_s32_t divtable32[DIVTABLESIZE];
|
|
extern void initdivtables(void);
|
|
|
|
static inline uint32_t divideu32(uint32_t const n, uint32_t const d)
|
|
{
|
|
static libdivide::libdivide_u32_t udiv;
|
|
static uint32_t lastd;
|
|
|
|
if (d == lastd)
|
|
goto skip;
|
|
|
|
udiv = libdivide::libdivide_u32_gen((lastd = d));
|
|
skip:
|
|
return libdivide::libdivide_u32_do(n, &udiv);
|
|
}
|
|
|
|
static inline int64_t tabledivide64(int64_t const n, int64_t const d)
|
|
{
|
|
static libdivide::libdivide_s64_t sdiv;
|
|
static int32_t lastd;
|
|
auto const dptr = ((unsigned)d < DIVTABLESIZE) ? &divtable64[d] : &sdiv;
|
|
|
|
if (d == lastd || dptr != &sdiv)
|
|
goto skip;
|
|
|
|
sdiv = libdivide::libdivide_s64_gen((lastd = d));
|
|
skip:
|
|
return libdivide::libdivide_s64_do(n, dptr);
|
|
}
|
|
|
|
static inline int32_t tabledivide32(int32_t const n, int32_t const d)
|
|
{
|
|
static libdivide::libdivide_s32_t sdiv;
|
|
static int32_t lastd;
|
|
auto const dptr = ((unsigned)d < DIVTABLESIZE) ? &divtable32[d] : &sdiv;
|
|
|
|
if (d == lastd || dptr != &sdiv)
|
|
goto skip;
|
|
|
|
sdiv = libdivide::libdivide_s32_gen((lastd = d));
|
|
skip:
|
|
return libdivide::libdivide_s32_do(n, dptr);
|
|
}
|
|
|
|
extern uint32_t divideu32_noinline(uint32_t n, uint32_t d);
|
|
extern int32_t tabledivide32_noinline(int32_t n, int32_t d);
|
|
extern int64_t tabledivide64_noinline(int64_t n, int64_t d);
|
|
|
|
|
|
static inline int32_t divscale(int32_t eax, int32_t ebx, int32_t ecx) { return dw(tabledivide64(qw(eax) << by(ecx), ebx)); }
|
|
|
|
static inline int64_t divscale64(int64_t eax, int64_t ebx, int64_t ecx) { return tabledivide64(eax << ecx, ebx); }
|
|
|
|
#define EDUKE32_SCALER_PRAGMA(a) \
|
|
static FORCE_INLINE int32_t divscale##a(int32_t eax, int32_t ebx) { return divscale(eax, ebx, a); }
|
|
EDUKE32_GENERATE_PRAGMAS EDUKE32_SCALER_PRAGMA(32)
|
|
#undef EDUKE32_SCALER_PRAGMA
|
|
|
|
static inline int32_t scale(int32_t eax, int32_t edx, int32_t ecx)
|
|
{
|
|
return dw(tabledivide64(qw(eax) * edx, ecx));
|
|
}
|
|
|
|
static FORCE_INLINE int32_t scaleadd(int32_t eax, int32_t edx, int32_t addend, int32_t ecx)
|
|
{
|
|
return dw(tabledivide64(qw(eax) * edx + addend, ecx));
|
|
}
|
|
|
|
static inline int32_t roundscale(int32_t eax, int32_t edx, int32_t ecx)
|
|
{
|
|
return scaleadd(eax, edx, ecx / 2, ecx);
|
|
}
|
|
|
|
|
|
//
|
|
// Generic C
|
|
//
|
|
|
|
#ifndef pragmas_have_mulscale
|
|
|
|
#define EDUKE32_SCALER_PRAGMA(a) \
|
|
static FORCE_INLINE CONSTEXPR int32_t mulscale##a(int32_t eax, int32_t edx) { return dw((qw(eax) * edx) >> by(a)); } \
|
|
static FORCE_INLINE CONSTEXPR int32_t dmulscale##a(int32_t eax, int32_t edx, int32_t esi, int32_t edi) \
|
|
{ \
|
|
return dw(((qw(eax) * edx) + (qw(esi) * edi)) >> by(a)); \
|
|
} \
|
|
static FORCE_INLINE CONSTEXPR int32_t tmulscale##a(int32_t eax, int32_t edx, int32_t ebx, int32_t ecx, int32_t esi, int32_t edi) \
|
|
{ \
|
|
return dw(((qw(eax) * edx) + (qw(ebx) * ecx) + (qw(esi) * edi)) >> by(a)); \
|
|
}
|
|
|
|
EDUKE32_GENERATE_PRAGMAS EDUKE32_SCALER_PRAGMA(32)
|
|
|
|
#undef EDUKE32_SCALER_PRAGMA
|
|
|
|
#endif
|
|
|
|
|
|
template <typename T>
|
|
static FORCE_INLINE void swapptr(T * const a, T * const b)
|
|
{
|
|
T const t = *a;
|
|
*a = *b;
|
|
*b = t;
|
|
}
|
|
|
|
#ifndef pragmas_have_swaps
|
|
#define swapchar swapptr
|
|
#define swapshort swapptr
|
|
#define swaplong swapptr
|
|
#define swapfloat swapptr
|
|
#define swapdouble swapptr
|
|
#define swap64bit swapptr
|
|
|
|
static FORCE_INLINE void swapchar2(void *a, void *b, int32_t s)
|
|
{
|
|
swapchar((char *)a, (char *)b);
|
|
swapchar((char *)a + 1, (char *)b + s);
|
|
}
|
|
#endif
|
|
|
|
static FORCE_INLINE CONSTEXPR char readpixel(void *s) { return *(char *)s; }
|
|
|
|
|
|
#ifndef pragmas_have_klabs
|
|
#if 0
|
|
static FORCE_INLINE int32_t klabs(int32_t const a)
|
|
{
|
|
uint32_t const m = a >> (sizeof(uint32_t) * CHAR_BIT - 1);
|
|
return (a ^ m) - m;
|
|
}
|
|
#else
|
|
#define klabs(x) abs(x)
|
|
#endif
|
|
#endif
|
|
#ifndef pragmas_have_ksgn
|
|
static FORCE_INLINE CONSTEXPR int ksgn(int32_t a) { return (a > 0) - (a < 0); }
|
|
#endif
|
|
|
|
#ifndef pragmas_have_mulscale
|
|
static FORCE_INLINE CONSTEXPR int32_t mulscale(int32_t eax, int32_t edx, int32_t ecx) { return dw((qw(eax) * edx) >> by(ecx)); }
|
|
static FORCE_INLINE CONSTEXPR int32_t dmulscale(int32_t eax, int32_t edx, int32_t esi, int32_t edi, int32_t ecx)
|
|
{
|
|
return dw(((qw(eax) * edx) + (qw(esi) * edi)) >> by(ecx));
|
|
}
|
|
#endif
|
|
|
|
#ifndef pragmas_have_qinterpolatedown16
|
|
void qinterpolatedown16(intptr_t bufptr, int32_t num, int32_t val, int32_t add);
|
|
void qinterpolatedown16short(intptr_t bufptr, int32_t num, int32_t val, int32_t add);
|
|
#endif
|
|
|
|
#ifndef pragmas_have_clearbuf
|
|
void clearbuf(void *d, int32_t c, int32_t a);
|
|
#endif
|
|
#ifndef pragmas_have_copybuf
|
|
void copybuf(const void *s, void *d, int32_t c);
|
|
#endif
|
|
#ifndef pragmas_have_swaps
|
|
void swapbuf4(void *a, void *b, int32_t c);
|
|
#endif
|
|
|
|
#ifndef pragmas_have_clearbufbyte
|
|
void clearbufbyte(void *D, int32_t c, int32_t a);
|
|
#endif
|
|
#ifndef pragmas_have_copybufbyte
|
|
void copybufbyte(const void *S, void *D, int32_t c);
|
|
#endif
|
|
#ifndef pragmas_have_copybufreverse
|
|
void copybufreverse(const void *S, void *D, int32_t c);
|
|
#endif
|
|
|
|
#ifndef pragmas_have_krecipasm
|
|
static inline int32_t krecipasm(int32_t i)
|
|
{
|
|
// Ken did this
|
|
union { int32_t i; float f; } x;
|
|
x.f = (float)i;
|
|
i = x.i;
|
|
return ((reciptable[(i >> 12) & 2047] >> (((i - 0x3f800000) >> 23) & 31)) ^ (i >> 31));
|
|
}
|
|
#endif
|
|
|
|
#undef qw
|
|
#undef dw
|
|
#undef wo
|
|
#undef by
|
|
|
|
static inline void swapbufreverse(void *s, void *d, int32_t c)
|
|
{
|
|
uint8_t *src = (uint8_t *)s, *dst = (uint8_t *)d;
|
|
Bassert(c >= 4);
|
|
|
|
do
|
|
{
|
|
swapchar(dst, src);
|
|
swapchar(dst + 1, src - 1);
|
|
swapchar(dst + 2, src - 2);
|
|
swapchar(dst + 3, src - 3);
|
|
dst += 4, src -= 4;
|
|
} while ((c -= 4) > 4);
|
|
|
|
while (c--)
|
|
swapchar(dst++, src--);
|
|
}
|
|
|
|
|
|
#endif // pragmas_h_
|