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shader: Reimplement GetCbufU64 as GetCbufU32x2

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It may generate better code on some compilers and it's easier to handle.
This commit is contained in:
ReinUsesLisp 2021-04-04 02:31:09 -03:00 • committed by ameerj
parent 5b3c6d59c2
commit 3f594dd86b
9 changed files with 21 additions and 22 deletions
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12
src/shader_recompiler/frontend/maxwell/translate/impl/load_constant.cpp
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@ -30,25 +30,25 @@ void TranslatorVisitor::LDC(u64 insn) {
const auto [index, offset]{Slot(ir, ldc.mode, imm_index, reg, imm)};
switch (ldc.size) {
case Size::U8:
X(ldc.dest_reg, ir.GetCbuf(index, offset, 8, false));
X(ldc.dest_reg, IR::U32{ir.GetCbuf(index, offset, 8, false)});
break;
case Size::S8:
X(ldc.dest_reg, ir.GetCbuf(index, offset, 8, true));
X(ldc.dest_reg, IR::U32{ir.GetCbuf(index, offset, 8, true)});
break;
case Size::U16:
X(ldc.dest_reg, ir.GetCbuf(index, offset, 16, false));
X(ldc.dest_reg, IR::U32{ir.GetCbuf(index, offset, 16, false)});
break;
case Size::S16:
X(ldc.dest_reg, ir.GetCbuf(index, offset, 16, true));
X(ldc.dest_reg, IR::U32{ir.GetCbuf(index, offset, 16, true)});
break;
case Size::B32:
X(ldc.dest_reg, ir.GetCbuf(index, offset, 32, false));
X(ldc.dest_reg, IR::U32{ir.GetCbuf(index, offset, 32, false)});
break;
case Size::B64: {
if (!IR::IsAligned(ldc.dest_reg, 2)) {
throw NotImplementedException("Unaligned destination register");
}
const IR::Value vector{ir.UnpackUint2x32(ir.GetCbuf(index, offset, 64, false))};
const IR::Value vector{ir.GetCbuf(index, offset, 64, false)};
for (int i = 0; i < 2; ++i) {
X(ldc.dest_reg + i, IR::U32{ir.CompositeExtract(vector, i)});
}