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Integrate the voffset shuffle in ReadVector

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This commit is contained in:
Henrik Rydgård 2023-10-05 18:52:50 +02:00
parent 5b14cb61a7
commit e852771480
2 changed files with 8 additions and 7 deletions
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2
Core/MIPS/MIPS.cpp
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@ -122,7 +122,7 @@ MIPSState::MIPSState() {
// * 4x4 Matrices are contiguous in RAM, making them, too, fast-loadable in NEON
// Disadvantages:
// * Extra indirection, can be confusing and slower (interpreter only)
// * Extra indirection, can be confusing and slower (interpreter only, however we can often skip the table by rerranging formulas)
// * Flushing and reloading row registers is now slower
int i = 0;

13
Core/MIPS/MIPSVFPUUtils.cpp
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@ -175,16 +175,17 @@ void ReadVector(float *rd, VectorSize size, int reg) {
default: length = 0; break;
}
int transpose = (reg >> 5) & 1;
const int mtx = reg & (7 << 2);
const int mtx = ((reg << 2) & 0x70);
const int col = reg & 3;
// NOTE: We now skip the voffset lookups.
if (transpose) {
const int base = mtx + col * 32;
for (int i = 0; i < length; i++)
rd[i] = V(base + ((row+i)&3));
} else {
const int base = mtx + col;
for (int i = 0; i < length; i++)
rd[i] = V(base + ((row+i)&3)*32);
rd[i] = currentMIPS->v[base + ((row+i)&3) * 4];
} else {
const int base = mtx + col * 4;
for (int i = 0; i < length; i++)
rd[i] = currentMIPS->v[base + ((row+i)&3)];
}
}