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graphics: implement RDNA2 alignbyte shader opcode

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nmzik committed 2026-08-18 03:53:42 +02:00
1 parent 30d57bed06
commit 13e87a8e58
9 files changed
+54
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src/graphics/shader/recompiler/frontend/translate/Integer.cpp
+13
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@@ -568,6 +568,19 @@ bool Translator::TranslateExtendedInteger(const IR::Instruction& inst) {
result = ir.BitwiseOr(lo_part, hi_part);
break;
}
case IR::Opcode::AlignByteU32: {
const auto hi = ReadU32(inst.src[0]);
const auto lo = ReadU32(inst.src[1]);
const auto byte_offset = mask(ReadU32(inst.src[2]), 31u);
const auto bit_offset = ir.ShiftLeftLogical(byte_offset, imm(3));
const auto concatenated = ir.PackUint2x32(lo, hi);
const auto shifted = IR::U64(ir.Emit(IR::ValueOpcode::ShiftRightLogical64,
{concatenated, mask(bit_offset, 63u)}));
const auto in_range =
IR::U1(ir.Emit(IR::ValueOpcode::ULessThan32, {byte_offset, imm(8)}));
result = ir.Select(in_range, UnpackU64(shifted)[0], imm(0));
break;
}
case IR::Opcode::ShiftLeftAddU32:
result =
ir.IAdd(ir.ShiftLeftLogical(ReadU32(inst.src[0]), mask(ReadU32(inst.src[1]), 31u)),