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CPU/PGXP: Make validate a member function

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Stenzek 2024-08-20 21:09:12 +10:00
parent 491179a447
commit dadf388657
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2 changed files with 56 additions and 67 deletions
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1
src/core/cpu_core.h
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@ -63,6 +63,7 @@ struct PGXP_value
const u32 mask = (1u << comp);
flags = valid ? (flags | mask) : (flags & ~mask);
}
ALWAYS_INLINE void Validate(u32 psxval) { flags = (value == psxval) ? flags : 0; }
ALWAYS_INLINE bool HasValid(u32 comp) const { return ConvertToBoolUnchecked((flags >> comp) & 1); }
ALWAYS_INLINE float GetValidX(u32 psxval) const

122
src/core/cpu_pgxp.cpp
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@ -61,20 +61,16 @@ enum : u32
#define SET_LOWORD(val, loword) ((static_cast<u32>(val) & 0xFFFF0000u) | static_cast<u32>(static_cast<u16>(loword)))
#define SET_HIWORD(val, hiword) ((static_cast<u32>(val) & 0x0000FFFFu) | (static_cast<u32>(hiword) << 16))
static double f16Sign(double val);
static double f16Unsign(double val);
static double f16Overflow(double val);
static void CacheVertex(u32 value, const PGXP_value& vertex);
static PGXP_value* GetCachedVertex(u32 value);
static float TruncateVertexPosition(float p);
static bool IsWithinTolerance(float precise_x, float precise_y, int int_x, int int_y);
static void MakeValid(PGXP_value* pV, u32 psxV);
static void Validate(PGXP_value* pV, u32 psxV);
static double f16Sign(double in);
static double f16Unsign(double in);
static double f16Overflow(double in);
static PGXP_value& GetRdValue(Instruction instr);
static PGXP_value& GetRtValue(Instruction instr);
static PGXP_value& ValidateAndGetRtValue(Instruction instr, u32 rtVal);
@ -89,7 +85,7 @@ static PGXP_value& PushSXY();
static PGXP_value* GetPtr(u32 addr);
static const PGXP_value& ValidateAndLoadMem(u32 addr, u32 value);
static void ValidateAndLoadMem16(PGXP_value* dest, u32 addr, u32 value, bool sign);
static void ValidateAndLoadMem16(PGXP_value& dest, u32 addr, u32 value, bool sign);
static void CPU_MTC2(u32 reg, const PGXP_value& value, u32 val);
static void CPU_BITWISE(Instruction instr, u32 rdVal, u32 rsVal, u32 rtVal);
@ -193,37 +189,20 @@ void CPU::PGXP::Shutdown()
std::memset(g_state.pgxp_cop0, 0, sizeof(g_state.pgxp_cop0));
}
ALWAYS_INLINE_RELEASE void CPU::PGXP::MakeValid(PGXP_value* pV, u32 psxV)
ALWAYS_INLINE_RELEASE double CPU::PGXP::f16Sign(double val)
{
if ((pV->flags & VALID_XY) == VALID_XY)
return;
pV->x = static_cast<float>(static_cast<s16>(Truncate16(psxV)));
pV->y = static_cast<float>(static_cast<s16>(Truncate16(psxV >> 16)));
pV->z = 0.0f;
pV->flags = VALID_XY | VALID_TAINTED_Z;
pV->value = psxV;
}
ALWAYS_INLINE_RELEASE void CPU::PGXP::Validate(PGXP_value* pV, u32 psxV)
{
pV->flags = (pV->value == psxV) ? pV->flags : 0;
}
ALWAYS_INLINE_RELEASE double CPU::PGXP::f16Sign(double in)
{
const s32 s = static_cast<s32>(static_cast<s64>(in * (USHRT_MAX + 1)));
const s32 s = static_cast<s32>(static_cast<s64>(val * (USHRT_MAX + 1)));
return static_cast<double>(s) / static_cast<double>(USHRT_MAX + 1);
}
ALWAYS_INLINE_RELEASE double CPU::PGXP::f16Unsign(double in)
ALWAYS_INLINE_RELEASE double CPU::PGXP::f16Unsign(double val)
{
return (in >= 0) ? in : (in + (USHRT_MAX + 1));
return (val >= 0) ? val : (val + (USHRT_MAX + 1));
}
ALWAYS_INLINE_RELEASE double CPU::PGXP::f16Overflow(double in)
ALWAYS_INLINE_RELEASE double CPU::PGXP::f16Overflow(double val)
{
return static_cast<double>(static_cast<s64>(in) >> 16);
return static_cast<double>(static_cast<s64>(val) >> 16);
}
ALWAYS_INLINE CPU::PGXP_value& CPU::PGXP::GetRdValue(Instruction instr)
@ -239,14 +218,14 @@ ALWAYS_INLINE CPU::PGXP_value& CPU::PGXP::GetRtValue(Instruction instr)
ALWAYS_INLINE CPU::PGXP_value& CPU::PGXP::ValidateAndGetRtValue(Instruction instr, u32 rtVal)
{
PGXP_value& ret = g_state.pgxp_gpr[static_cast<u8>(instr.r.rt.GetValue())];
Validate(&ret, rtVal);
ret.Validate(rtVal);
return ret;
}
ALWAYS_INLINE CPU::PGXP_value& CPU::PGXP::ValidateAndGetRsValue(Instruction instr, u32 rsVal)
{
PGXP_value& ret = g_state.pgxp_gpr[static_cast<u8>(instr.r.rs.GetValue())];
Validate(&ret, rsVal);
ret.Validate(rsVal);
return ret;
}
@ -308,16 +287,16 @@ ALWAYS_INLINE_RELEASE const CPU::PGXP_value& CPU::PGXP::ValidateAndLoadMem(u32 a
if (!pMem) [[unlikely]]
return PGXP_value_invalid;
Validate(pMem, value);
pMem->Validate(value);
return *pMem;
}
ALWAYS_INLINE_RELEASE void CPU::PGXP::ValidateAndLoadMem16(PGXP_value* dest, u32 addr, u32 value, bool sign)
ALWAYS_INLINE_RELEASE void CPU::PGXP::ValidateAndLoadMem16(PGXP_value& dest, u32 addr, u32 value, bool sign)
{
PGXP_value* pMem = GetPtr(addr);
if (!pMem) [[unlikely]]
{
*dest = PGXP_value_invalid;
dest = PGXP_value_invalid;
return;
}
@ -330,28 +309,28 @@ ALWAYS_INLINE_RELEASE void CPU::PGXP::ValidateAndLoadMem16(PGXP_value* dest, u32
((Truncate16(pMem->value) == Truncate16(value)) ? pMem->flags : (pMem->flags & ~VALID_X));
// copy whole value
*dest = *pMem;
dest = *pMem;
// if high word then shift
if (hiword)
{
dest->x = dest->y;
dest->SetValid(COMP_X, dest->HasValid(COMP_Y));
dest.x = dest.y;
dest.SetValid(COMP_X, dest.HasValid(COMP_Y));
}
// only set y as valid if x is also valid.. don't want to make fake values
if (dest->HasValid(COMP_X))
if (dest.HasValid(COMP_X))
{
dest->y = (dest->x < 0) ? -1.0f * sign : 0.0f;
dest->SetValid(COMP_Y);
dest.y = (dest.x < 0) ? -1.0f * sign : 0.0f;
dest.SetValid(COMP_Y);
}
else
{
dest->y = 0.0f;
dest->SetValid(COMP_Y, false);
dest.y = 0.0f;
dest.SetValid(COMP_Y, false);
}
dest->value = value;
dest.value = value;
}
ALWAYS_INLINE_RELEASE void CPU::PGXP::WriteMem(u32 addr, const PGXP_value& value)
@ -496,11 +475,11 @@ void CPU::PGXP::GTE_RTPS(float x, float y, float z, u32 value)
int CPU::PGXP::GTE_NCLIP_valid(u32 sxy0, u32 sxy1, u32 sxy2)
{
PGXP_value& SXY0 = GetSXY0();
SXY0.Validate(sxy0);
PGXP_value& SXY1 = GetSXY1();
SXY1.Validate(sxy1);
PGXP_value& SXY2 = GetSXY2();
Validate(&SXY0, sxy0);
Validate(&SXY1, sxy1);
Validate(&SXY2, sxy2);
SXY2.Validate(sxy2);
// Don't use accurate clipping for game-constructed values, which don't have a valid Z.
return (((SXY0.flags & SXY1.flags & SXY2.flags & VALID_XYZ) == VALID_XYZ));
@ -562,7 +541,7 @@ void CPU::PGXP::CPU_MFC2(Instruction instr, u32 rdVal)
LOG_VALUES_1(CPU::GetGTERegisterName(idx), rdVal, &g_state.pgxp_gte[idx]);
PGXP_value& prdVal = g_state.pgxp_gte[idx];
Validate(&prdVal, rdVal);
prdVal.Validate(rdVal);
SetRtValue(instr, prdVal, rdVal);
}
@ -597,7 +576,7 @@ void CPU::PGXP::CPU_SWC2(Instruction instr, u32 addr, u32 rtVal)
LOG_VALUES_1(CPU::GetGTERegisterName(idx), rtVal, &prtVal);
std::fprintf(s_log, " addr=%08X", addr);
#endif
Validate(&prtVal, rtVal);
prtVal.Validate(rtVal);
WriteMem(addr, prtVal);
}
@ -697,14 +676,14 @@ void CPU::PGXP::CPU_LH(Instruction instr, u32 addr, u32 rtVal)
{
// Rt = Mem[Rs + Im] (sign extended)
LOG_VALUES_LOAD(addr, rtVal);
ValidateAndLoadMem16(&GetRtValue(instr), addr, rtVal, true);
ValidateAndLoadMem16(GetRtValue(instr), addr, rtVal, true);
}
void CPU::PGXP::CPU_LHU(Instruction instr, u32 addr, u32 rtVal)
{
// Rt = Mem[Rs + Im] (zero extended)
LOG_VALUES_LOAD(addr, rtVal);
ValidateAndLoadMem16(&GetRtValue(instr), addr, rtVal, false);
ValidateAndLoadMem16(GetRtValue(instr), addr, rtVal, false);
}
void CPU::PGXP::CPU_SB(Instruction instr, u32 addr, u32 rtVal)
@ -741,8 +720,9 @@ void CPU::PGXP::CPU_MOVE(u32 Rd, u32 Rs, u32 rsVal)
const Instruction instr = {0};
LOG_VALUES_C1(Rs, rsVal);
#endif
Validate(&g_state.pgxp_gpr[Rs], rsVal);
g_state.pgxp_gpr[Rd] = g_state.pgxp_gpr[Rs];
PGXP_value& prsVal = g_state.pgxp_gpr[Rs];
prsVal.Validate(rsVal);
g_state.pgxp_gpr[Rd] = prsVal;
}
void CPU::PGXP::CPU_ADDI(Instruction instr, u32 rsVal)
@ -1153,7 +1133,7 @@ void CPU::PGXP::CPU_MULT(Instruction instr, u32 rsVal, u32 rtVal)
// Split values into outputs
const double lx = xx;
const double ly = f16Overflow(xx) + (xy + yx);
const double hx = f16Overflow(ly)+ yy;
const double hx = f16Overflow(ly) + yy;
const double hy = f16Overflow(hx);
ploVal.x = static_cast<float>(f16Sign(lx));
@ -1282,8 +1262,10 @@ void CPU::PGXP::CPU_DIVU(Instruction instr, u32 rsVal, u32 rtVal)
// Z/valid is the same
phiVal = ploVal;
const double vs = f16Unsign(prsVal.GetValidX(rsVal)) + f16Unsign(prsVal.GetValidY(rsVal)) * static_cast<double>(1 << 16);
const double vt = f16Unsign(prtVal.GetValidX(rtVal)) + f16Unsign(prtVal.GetValidY(rtVal)) * static_cast<double>(1 << 16);
const double vs =
f16Unsign(prsVal.GetValidX(rsVal)) + f16Unsign(prsVal.GetValidY(rsVal)) * static_cast<double>(1 << 16);
const double vt =
f16Unsign(prtVal.GetValidX(rtVal)) + f16Unsign(prtVal.GetValidY(rtVal)) * static_cast<double>(1 << 16);
const double lo = vs / vt;
ploVal.y = static_cast<float>(f16Sign(f16Overflow(lo)));
@ -1417,20 +1399,26 @@ ALWAYS_INLINE_RELEASE void CPU::PGXP::CPU_SRx(Instruction instr, u32 rtVal, u32
y = y / static_cast<double>(1 << sh);
PGXP_value& prdVal = GetRdValue(instr);
prdVal = prtVal;
prdVal.x = static_cast<float>(f16Sign(x));
prdVal.y = static_cast<float>(f16Sign(y));
prdVal.value = rdVal;
prdVal.flags |= VALID_TAINTED_Z;
// Use low precision/rounded values when we're not shifting an entire component,
// and it's not originally from a 3D value. Too many false positives in P2/etc.
// What we probably should do is not set the valid flag on non-3D values to begin
// with, only letting them become valid when used in another expression.
if (sign && !is_variable && !(prdVal.flags & VALID_Z) && sh < 16)
if (sign && !is_variable && !(prtVal.flags & VALID_Z) && sh < 16)
{
prdVal.flags = 0;
MakeValid(&prdVal, rdVal);
prdVal.x = static_cast<float>(LOWORD_S16(rdVal));
prdVal.y = static_cast<float>(HIWORD_S16(rdVal));
prdVal.z = 0.0f;
prdVal.value = rdVal;
prdVal.flags = VALID_XY | VALID_TAINTED_Z;
}
else
{
prdVal.x = static_cast<float>(f16Sign(x));
prdVal.y = static_cast<float>(f16Sign(y));
prdVal.z = prtVal.z;
prdVal.value = rdVal;
prdVal.flags = prtVal.flags | VALID_TAINTED_Z;
}
}
@ -1478,7 +1466,7 @@ void CPU::PGXP::CPU_MFC0(Instruction instr, u32 rdVal)
LOG_VALUES_1(TinyString::from_format("cop0_{}", idx).c_str(), rdVal, &prdVal);
// CPU[Rt] = CP0[Rd]
Validate(&prdVal, rdVal);
prdVal.Validate(rdVal);
PGXP_value& prtVal = GetRtValue(instr);
prtVal = prdVal;
prtVal.value = rdVal;