From d81deeb775bf5c67c0e612bedb2bb09021ee5ff6 Mon Sep 17 00:00:00 2001
From: Maufeat <sahyno1996@gmail.com>
Date: Fri, 1 Aug 2025 12:25:57 +0200
Subject: [PATCH] Revert "[shader_recompiler/Maxwell] Unstub ISBERD completely
 (#160)"

This reverts commit 3f12ae1e6eddc9848074a5a6b9b1bf01ab2a6957.
---
 .../impl/internal_stage_buffer_entry_read.cpp | 51 ++-----------------
 1 file changed, 4 insertions(+), 47 deletions(-)

diff --git a/src/shader_recompiler/frontend/maxwell/translate/impl/internal_stage_buffer_entry_read.cpp b/src/shader_recompiler/frontend/maxwell/translate/impl/internal_stage_buffer_entry_read.cpp
index d71c65069b..59ca4b15a3 100644
--- a/src/shader_recompiler/frontend/maxwell/translate/impl/internal_stage_buffer_entry_read.cpp
+++ b/src/shader_recompiler/frontend/maxwell/translate/impl/internal_stage_buffer_entry_read.cpp
@@ -1,6 +1,3 @@
-// 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
 
@@ -40,56 +37,16 @@ void TranslatorVisitor::ISBERD(u64 insn) {
     } const isberd{insn};
 
     if (isberd.skew != 0) {
-        IR::U32 current_lane_id{ir.LaneId()};
-        IR::U32 result{ir.IAdd(X(isberd.src_reg), current_lane_id)};
-        X(isberd.dest_reg, result);
+        throw NotImplementedException("SKEW");
     }
     if (isberd.o != 0) {
-        IR::U32 address{};
-        IR::F32 result{};
-        if (isberd.src_reg_num == 0xFF) {
-            address = ir.Imm32(isberd.imm);
-            result = ir.GetAttributeIndexed(address);
-        } else {
-            IR::U32 offset = ir.Imm32(isberd.imm);
-            address = ir.IAdd(X(isberd.src_reg), offset);
-            result = ir.GetAttributeIndexed(address);
-        }
-        X(isberd.dest_reg, ir.BitCast<IR::U32>(result));
+        throw NotImplementedException("O");
     }
     if (isberd.mode != Mode::Default) {
-        IR::F32 result{};
-        IR::U32 index{};
-        if (isberd.src_reg_num == 0xFF) {
-            index = ir.Imm32(isberd.imm);
-        } else {
-            index = ir.IAdd(X(isberd.src_reg), ir.Imm32(isberd.imm));
-        }
-
-        switch (static_cast<u64>(isberd.mode.Value())) {
-        case static_cast<u64>(Mode::Patch):
-            result = ir.GetPatch(index.Patch());
-            break;
-        case static_cast<u64>(Mode::Prim):
-            result = ir.GetAttribute(index.Attribute());
-            break;
-        case static_cast<u64>(Mode::Attr):
-            result = ir.GetAttributeIndexed(index);
-            break;
-        }
-        X(isberd.dest_reg, ir.BitCast<IR::U32>(result));
+        throw NotImplementedException("Mode {}", isberd.mode.Value());
     }
     if (isberd.shift != Shift::Default) {
-        IR::U32 result{};
-        switch (static_cast<u64>(isberd.shift.Value())) {
-        case static_cast<u64>(Shift::U16):
-            result = ir.ShiftLeftLogical(result, static_cast<IR::U32>(ir.Imm16(1)));
-            break;
-        case static_cast<u64>(Shift::B32):
-            result = ir.ShiftLeftLogical(result, ir.Imm32(1));
-            break;
-        }
-        X(isberd.dest_reg, result);
+        throw NotImplementedException("Shift {}", isberd.shift.Value());
     }
     //LOG_DEBUG(Shader, "(STUBBED) called {}", insn);
     if (isberd.src_reg_num == 0xFF) {