ShuriZma
/
duckstation
mirror of https://github.com/stenzek/duckstation
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

CPU/PGXP: Inline valid flag updates

This commit is contained in:
Stenzek 2024-08-20 21:18:07 +10:00
parent d4d813f043
commit 2971b2f34c
No known key found for this signature in database
2 changed files with 11 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/core/cpu_core.h
View File

@ -58,14 +58,8 @@ struct PGXPValue
u32 value;
u32 flags;
ALWAYS_INLINE void SetValid(u32 comp, bool valid = true)
{
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
{
return (flags & 1) ? x : static_cast<float>(static_cast<s16>(psxval));

30
src/core/cpu_pgxp.cpp
View File

@ -37,13 +37,6 @@ enum : u32
PGXP_MEM_SCRATCH_OFFSET = Bus::RAM_8MB_SIZE / 4,
};
enum : u32
{
COMP_X,
COMP_Y,
COMP_Z,
};
enum : u32
{
VALID_X = (1u << 0),
@ -317,19 +310,19 @@ ALWAYS_INLINE_RELEASE void CPU::PGXP::ValidateAndLoadMem16(PGXPValue& dest, u32
if (hiword)
{
dest.x = dest.y;
dest.SetValid(COMP_X, dest.HasValid(COMP_Y));
dest.flags = (dest.flags & ~VALID_X) | ((dest.flags & VALID_Y) >> 1);
}
// only set y as valid if x is also valid.. don't want to make fake values
if (dest.HasValid(COMP_X))
if (dest.flags & VALID_X)
{
dest.y = (dest.x < 0) ? -1.0f * sign : 0.0f;
dest.SetValid(COMP_Y);
dest.flags |= VALID_Y;
}
else
{
dest.y = 0.0f;
dest.SetValid(COMP_Y, false);
dest.flags &= ~VALID_Y;
}
dest.value = value;
@ -356,23 +349,22 @@ ALWAYS_INLINE_RELEASE void CPU::PGXP::WriteMem16(u32 addr, const PGXPValue& valu
if (hiword)
{
dest->y = value.x;
dest->SetValid(COMP_Y, value.HasValid(COMP_X));
dest->flags = (dest->flags & ~VALID_Y) | ((value.flags & VALID_X) << 1);
dest->value = (dest->value & UINT32_C(0x0000FFFF)) | (value.value << 16);
}
else
{
dest->x = value.x;
dest->SetValid(COMP_X, value.HasValid(COMP_X));
dest->flags = (dest->flags & ~VALID_X) | (value.flags & VALID_X);
dest->value = (dest->value & UINT32_C(0xFFFF0000)) | (value.value & UINT32_C(0x0000FFFF));
}
// overwrite z/w if valid
// TODO: Check modified
if (value.HasValid(COMP_Z))
if (value.flags & VALID_Z)
{
dest->z = value.z;
dest->SetValid(COMP_Z);
dest->flags |= hiword ? VALID_HIGHZ : VALID_LOWZ;
dest->flags |= VALID_Z | (hiword ? VALID_HIGHZ : VALID_LOWZ);
}
else
{
@ -384,7 +376,7 @@ ALWAYS_INLINE_RELEASE void CPU::PGXP::WriteMem16(u32 addr, const PGXPValue& valu
ALWAYS_INLINE_RELEASE void CPU::PGXP::CopyZIfMissing(PGXPValue& dst, const PGXPValue& src)
{
dst.z = dst.HasValid(COMP_Z) ? dst.z : src.z;
dst.z = (dst.flags & VALID_Z) ? dst.z : src.z;
dst.flags |= (src.flags & VALID_Z);
}
@ -783,7 +775,7 @@ void CPU::PGXP::CPU_ANDI(Instruction instr, u32 rsVal)
{
// if 0 then x == 0
prtVal.x = 0.0f;
prtVal.SetValid(COMP_X);
prtVal.flags |= VALID_X;
}
break;
@ -798,7 +790,7 @@ void CPU::PGXP::CPU_ANDI(Instruction instr, u32 rsVal)
{
// otherwise x is low precision value
prtVal.x = static_cast<float>(LOWORD_S16(rtVal));
prtVal.SetValid(COMP_X);
prtVal.flags |= VALID_X;
}
break;
}