[shader_recompiler/Maxwell] Implement ISBERD skew operation

src/shader_recompiler/frontend/maxwell/translate/impl/internal_stage_buffer_entry_read.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -28,8 +31,8 @@ void TranslatorVisitor::ISBERD(u64 insn) {
         u64 raw;
         BitField<0, 8, IR::Reg> dest_reg;
         BitField<8, 8, IR::Reg> src_reg;
-        BitField<8, 8, u32> src_reg_num;
-        BitField<24, 8, u32> imm;
+        BitField<8, 8, u64> src_reg_num;
+        BitField<24, 8, u64> imm;
         BitField<31, 1, u64> skew;
         BitField<32, 1, u64> o;
         BitField<33, 2, Mode> mode;
@@ -37,7 +40,9 @@ void TranslatorVisitor::ISBERD(u64 insn) {
     } const isberd{insn};
 
     if (isberd.skew != 0) {
-        throw NotImplementedException("SKEW");
+        IR::U32 current_lane_id{ir.LaneId()};
+        IR::U32 result{ir.IAdd(X(isberd.src_reg), current_lane_id)};
+        X(isberd.dest_reg, result);
     }
     if (isberd.o != 0) {
         throw NotImplementedException("O");