mirror of
https://github.com/hrydgard/ppsspp.git
synced 2024-12-13 16:45:46 +00:00
aba026f7e9
PR #16984 added more accurate versions of these functions, but they require large lookup tables stored in assets/. If these files are missing, PPSSPP would simply crash, which isn't good. We should probably try to warn the user somehow that these files are missing, though...
236 lines
6.5 KiB
C
236 lines
6.5 KiB
C
// Copyright (c) 2012- PPSSPP Project.
|
|
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, version 2.0 or later versions.
|
|
|
|
// This program 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 General Public License 2.0 for more details.
|
|
|
|
// A copy of the GPL 2.0 should have been included with the program.
|
|
// If not, see http://www.gnu.org/licenses/
|
|
|
|
// Official git repository and contact information can be found at
|
|
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
|
|
|
|
#pragma once
|
|
#include <cmath>
|
|
|
|
#include "Common/CommonTypes.h"
|
|
#include "Core/MIPS/MIPS.h"
|
|
|
|
#define _VD (op & 0x7F)
|
|
#define _VS ((op>>8) & 0x7F)
|
|
#define _VT ((op>>16) & 0x7F)
|
|
|
|
inline int Xpose(int v) {
|
|
return v^0x20;
|
|
}
|
|
|
|
// Half of PI, or 90 degrees.
|
|
#ifndef M_PI_2
|
|
#define M_PI_2 1.57079632679489661923
|
|
#endif
|
|
|
|
// The VFPU uses weird angles where 4.0 represents a full circle. This makes it possible to return
|
|
// exact 1.0/-1.0 values at certain angles.
|
|
//
|
|
// The current code attempts to match VFPU sin/cos exactly.
|
|
// Possibly affected games:
|
|
// Final Fantasy III (#2921 )
|
|
// Hitman Reborn 2 (#12900)
|
|
// Cho Aniki Zero (#13705)
|
|
// Hajime no Ippo (#13671)
|
|
// Dissidia Duodecim Final Fantasy (#6710 )
|
|
//
|
|
// Messing around with the modulo functions? try https://www.desmos.com/calculator.
|
|
|
|
extern float vfpu_sin(float);
|
|
extern float vfpu_cos(float);
|
|
extern void vfpu_sincos(float, float&, float&);
|
|
|
|
extern float vfpu_asin(float);
|
|
|
|
inline float vfpu_clamp(float v, float min, float max) {
|
|
// Note: NAN is preserved, and -0.0 becomes +0.0 if min=+0.0.
|
|
return v >= max ? max : (v <= min ? min : v);
|
|
}
|
|
|
|
float vfpu_dot(const float a[4], const float b[4]);
|
|
float vfpu_sqrt(float a);
|
|
float vfpu_rsqrt(float a);
|
|
|
|
extern float vfpu_exp2(float);
|
|
extern float vfpu_rexp2(float);
|
|
extern float vfpu_log2(float);
|
|
extern float vfpu_rcp(float);
|
|
|
|
inline uint32_t get_uexp(uint32_t x) {
|
|
return (x >> 23) & 0xFF;
|
|
}
|
|
|
|
inline int32_t get_exp(uint32_t x) {
|
|
return get_uexp(x) - 127;
|
|
}
|
|
|
|
inline int32_t get_mant(uint32_t x) {
|
|
// Note: this returns the hidden 1.
|
|
return (x & 0x007FFFFF) | 0x00800000;
|
|
}
|
|
|
|
inline int32_t get_sign(uint32_t x) {
|
|
return x & 0x80000000;
|
|
}
|
|
|
|
#define VFPU_FLOAT16_EXP_MAX 0x1f
|
|
#define VFPU_SH_FLOAT16_SIGN 15
|
|
#define VFPU_MASK_FLOAT16_SIGN 0x1
|
|
#define VFPU_SH_FLOAT16_EXP 10
|
|
#define VFPU_MASK_FLOAT16_EXP 0x1f
|
|
#define VFPU_SH_FLOAT16_FRAC 0
|
|
#define VFPU_MASK_FLOAT16_FRAC 0x3ff
|
|
|
|
enum VectorSize {
|
|
V_Single = 1,
|
|
V_Pair = 2,
|
|
V_Triple = 3,
|
|
V_Quad = 4,
|
|
V_Invalid = -1,
|
|
};
|
|
|
|
enum MatrixSize {
|
|
M_1x1 = 1,
|
|
M_2x2 = 2,
|
|
M_3x3 = 3,
|
|
M_4x4 = 4,
|
|
M_Invalid = -1
|
|
};
|
|
|
|
inline u32 VFPU_SWIZZLE(int x, int y, int z, int w) {
|
|
return (x << 0) | (y << 2) | (z << 4) | (w << 6);
|
|
}
|
|
|
|
inline u32 VFPU_MASK(int x, int y, int z, int w) {
|
|
return (x << 0) | (y << 1) | (z << 2) | (w << 3);
|
|
}
|
|
|
|
inline u32 VFPU_ANY_SWIZZLE() {
|
|
return 0x000000FF;
|
|
}
|
|
|
|
inline u32 VFPU_ABS(int x, int y, int z, int w) {
|
|
return VFPU_MASK(x, y, z, w) << 8;
|
|
}
|
|
|
|
inline u32 VFPU_CONST(int x, int y, int z, int w) {
|
|
return VFPU_MASK(x, y, z, w) << 12;
|
|
}
|
|
|
|
inline u32 VFPU_NEGATE(int x, int y, int z, int w) {
|
|
return VFPU_MASK(x, y, z, w) << 16;
|
|
}
|
|
|
|
enum class VFPUConst {
|
|
NONE = -1,
|
|
ZERO,
|
|
ONE,
|
|
TWO,
|
|
HALF,
|
|
THREE,
|
|
THIRD,
|
|
FOURTH,
|
|
SIXTH,
|
|
};
|
|
|
|
inline u32 VFPU_MAKE_CONSTANTS(VFPUConst x, VFPUConst y, VFPUConst z, VFPUConst w) {
|
|
u32 result = 0;
|
|
if (x != VFPUConst::NONE) {
|
|
// This sets the constant flag and the swizzle/abs flags for the right constant.
|
|
result |= (((int)x & 3) << 0) | (((int)x & 4) << 6) | (1 << 12);
|
|
}
|
|
if (y != VFPUConst::NONE) {
|
|
result |= (((int)y & 3) << 2) | (((int)y & 4) << 7) | (1 << 13);
|
|
}
|
|
if (z != VFPUConst::NONE) {
|
|
result |= (((int)z & 3) << 4) | (((int)z & 4) << 8) | (1 << 14);
|
|
}
|
|
if (w != VFPUConst::NONE) {
|
|
result |= (((int)w & 3) << 6) | (((int)w & 4) << 9) | (1 << 15);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
u32 VFPURewritePrefix(int ctrl, u32 remove, u32 add);
|
|
|
|
void ReadMatrix(float *rd, MatrixSize size, int reg);
|
|
void WriteMatrix(const float *rs, MatrixSize size, int reg);
|
|
|
|
void WriteVector(const float *rs, VectorSize N, int reg);
|
|
void ReadVector(float *rd, VectorSize N, int reg);
|
|
|
|
void GetVectorRegs(u8 regs[4], VectorSize N, int vectorReg);
|
|
void GetMatrixRegs(u8 regs[16], MatrixSize N, int matrixReg);
|
|
|
|
// Translate between vector and matrix size. Possibly we should simply
|
|
// join the two enums, but the type safety is kind of nice.
|
|
VectorSize GetVectorSize(MatrixSize sz);
|
|
MatrixSize GetMatrixSize(VectorSize sz);
|
|
|
|
// Note that if matrix is a transposed matrix (E format), GetColumn will actually return rows,
|
|
// and vice versa.
|
|
int GetColumnName(int matrix, MatrixSize msize, int column, int offset);
|
|
int GetRowName(int matrix, MatrixSize msize, int row, int offset);
|
|
|
|
int GetMatrixName(int matrix, MatrixSize msize, int column, int row, bool transposed);
|
|
|
|
void GetMatrixColumns(int matrixReg, MatrixSize msize, u8 vecs[4]);
|
|
void GetMatrixRows(int matrixReg, MatrixSize msize, u8 vecs[4]);
|
|
|
|
enum MatrixOverlapType {
|
|
OVERLAP_NONE = 0,
|
|
OVERLAP_PARTIAL = 1,
|
|
OVERLAP_EQUAL = 2,
|
|
// Transposed too? (same space but transposed)
|
|
};
|
|
|
|
MatrixOverlapType GetMatrixOverlap(int m1, int m2, MatrixSize msize);
|
|
|
|
|
|
// Returns a number from 0-7, good for checking overlap for 4x4 matrices.
|
|
inline int GetMtx(int matrixReg) {
|
|
return (matrixReg >> 2) & 7;
|
|
}
|
|
|
|
VectorSize GetVecSizeSafe(MIPSOpcode op);
|
|
VectorSize GetVecSize(MIPSOpcode op);
|
|
MatrixSize GetMtxSizeSafe(MIPSOpcode op);
|
|
MatrixSize GetMtxSize(MIPSOpcode op);
|
|
VectorSize GetHalfVectorSizeSafe(VectorSize sz);
|
|
VectorSize GetHalfVectorSize(VectorSize sz);
|
|
VectorSize GetDoubleVectorSizeSafe(VectorSize sz);
|
|
VectorSize GetDoubleVectorSize(VectorSize sz);
|
|
VectorSize MatrixVectorSizeSafe(MatrixSize sz);
|
|
VectorSize MatrixVectorSize(MatrixSize sz);
|
|
int GetNumVectorElements(VectorSize sz);
|
|
int GetMatrixSideSafe(MatrixSize sz);
|
|
int GetMatrixSide(MatrixSize sz);
|
|
const char *GetVectorNotation(int reg, VectorSize size);
|
|
const char *GetMatrixNotation(int reg, MatrixSize size);
|
|
inline bool IsMatrixTransposed(int matrixReg) {
|
|
return (matrixReg >> 5) & 1;
|
|
}
|
|
inline bool IsVectorColumn(int vectorReg) {
|
|
return !((vectorReg >> 5) & 1);
|
|
}
|
|
inline int TransposeMatrixReg(int matrixReg) {
|
|
return matrixReg ^ 0x20;
|
|
}
|
|
int GetVectorOverlap(int reg1, VectorSize size1, int reg2, VectorSize size2);
|
|
|
|
bool GetVFPUCtrlMask(int reg, u32 *mask);
|
|
|
|
float Float16ToFloat32(unsigned short l);
|
|
void InitVFPU();
|