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Split TevStageIndirect::mid into matrix_index and matrix_id

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This commit is contained in:
Pokechu22
2021-04-10 17:41:06 -07:00
parent 1d628d087b
commit c3668e179c
5 changed files with 78 additions and 41 deletions
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26
Source/Core/VideoBackends/Software/Tev.cpp
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@ -485,20 +485,16 @@ void Tev::Indirect(unsigned int stageNum, s32 s, s32 t)
// matrix multiply - results might overflow, but we don't care since we only use the lower 24 bits
// of the result.
const int indmtxid = indirect.mid & 3;
if (indmtxid)
if (indirect.matrix_index != IndMtxIndex::Off)
{
const IND_MTX& indmtx = bpmem.indmtx[indmtxid - 1];
const int scale =
((u32)indmtx.col0.s0 << 0) | ((u32)indmtx.col1.s1 << 2) | ((u32)indmtx.col2.s2 << 4);
const IND_MTX& indmtx = bpmem.indmtx[static_cast<u32>(indirect.matrix_index.Value()) - 1];
int shift;
const int shift = 17 - indmtx.GetScale();
switch (indirect.mid & 12)
switch (indirect.matrix_id)
{
case 0:
case IndMtxId::Indirect:
// matrix values are S0.10, output format is S17.7, so divide by 8
shift = (17 - scale);
indtevtrans[0] = (indmtx.col0.ma * indcoord[0] + indmtx.col1.mc * indcoord[1] +
indmtx.col2.me * indcoord[2]) >>
3;
@ -506,25 +502,29 @@ void Tev::Indirect(unsigned int stageNum, s32 s, s32 t)
indmtx.col2.mf * indcoord[2]) >>
3;
break;
case 4: // s matrix
case IndMtxId::S:
// s is S17.7, matrix elements are divided by 256, output is S17.7, so divide by 256. - TODO:
// Maybe, since s is actually stored as S24, we should divide by 256*64?
shift = (17 - scale);
indtevtrans[0] = s * indcoord[0] / 256;
indtevtrans[1] = t * indcoord[0] / 256;
break;
case 8: // t matrix
shift = (17 - scale);
case IndMtxId::T:
indtevtrans[0] = s * indcoord[1] / 256;
indtevtrans[1] = t * indcoord[1] / 256;
break;
default:
PanicAlertFmt("Invalid indirect matrix ID {}", indirect.matrix_id);
return;
}
indtevtrans[0] = shift >= 0 ? indtevtrans[0] >> shift : indtevtrans[0] << -shift;
indtevtrans[1] = shift >= 0 ? indtevtrans[1] >> shift : indtevtrans[1] << -shift;
}
else
{
// If matrix_index is Off (0), matrix_id should be Indirect (0)
ASSERT(indirect.matrix_id == IndMtxId::Indirect);
}
if (indirect.fb_addprev)
{