[video_core] Skip fragment shaders with known issues on non-NVIDIA drivers (#4503)

- [x] I have read and followed the [Contribution Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/CONTRIBUTING.md#code-contributions).
- [x] I have read and followed the [AI Policy](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/AI.md)
- [x] I have read and followed the [Coding Guidelines](https://git.eden-emu.dev/eden-emu/eden/src/branch/master/docs/policies/Coding.md) to the best of my ability.

-------------------

Skip fragment shaders using a pattern that is not supported by non-NVIDIA drivers.

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/4503
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>

src/shader_recompiler/frontend/maxwell/translate_program.cpp

@@ -301,7 +301,7 @@ IR::Program TranslateProgram(ObjectPool<IR::Inst>& inst_pool, ObjectPool<IR::Blo
     Optimization::GlobalMemoryToStorageBufferPass(program, normalized_host_info);
     Optimization::TexturePass(env, program, normalized_host_info);
 
-    if (Settings::values.resolution_info.active || Settings::values.rescale_hack.GetValue()) {
+    if (Settings::values.resolution_info.active) {
         Optimization::RescalingPass(program);
     }
     Optimization::DeadCodeEliminationPass(program);

src/shader_recompiler/ir_opt/passes.h

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 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
 
@@ -28,6 +31,7 @@ void TexturePass(Environment& env, IR::Program& program, const HostTranslateInfo
 void LayerPass(IR::Program& program, const HostTranslateInfo& host_info);
 void VendorWorkaroundPass(IR::Program& program);
 void VerificationPass(const IR::Program& program);
+bool HasBrokenPattern(const IR::Program& program);
 
 // Dual Vertex
 void VertexATransformPass(IR::Program& program);

src/shader_recompiler/ir_opt/rescaling_pass.cpp

@@ -67,18 +67,11 @@ void VisitMark(IR::Block& block, IR::Inst& inst) {
         if (must_patch_outside) {
             const auto it{IR::Block::InstructionList::s_iterator_to(inst)};
             IR::IREmitter ir{block, it};
-            if (Settings::values.rescale_hack.GetValue()) {
-                const IR::F32 new_inst{&*block.PrependNewInst(it, inst)};
-                const IR::F32 up_factor{ir.FPRecip(ir.ResolutionDownFactor())};
-                const IR::Value converted{ir.FPMul(new_inst, up_factor)};
-                inst.ReplaceUsesWith(converted);
-            } else {
-                IR::Inst* const new_inst{&*block.PrependNewInst(it, inst)};
-                const IR::F32 new_bitcast{ir.ConvertUToF(32, 32, IR::Value{new_inst})};
-                const IR::F32 up_factor{ir.FPRecip(ir.ResolutionDownFactor())};
-                const IR::Value converted{ir.FPMul(new_bitcast, up_factor)};
-                inst.ReplaceUsesWith(converted);
-            }
+            IR::Inst* const new_inst{&*block.PrependNewInst(it, inst)};
+            const IR::F32 new_bitcast{ir.ConvertUToF(32, 32, IR::Value{new_inst})};
+            const IR::F32 up_factor{ir.FPRecip(ir.ResolutionDownFactor())};
+            const IR::Value converted{ir.FPMul(new_bitcast, up_factor)};
+            inst.ReplaceUsesWith(converted);
         }
         break;
     }

src/shader_recompiler/ir_opt/vendor_workaround_pass.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -76,4 +79,44 @@ void VendorWorkaroundPass(IR::Program& program) {
     }
 }
 
+bool HasBrokenPattern(const IR::Program& program) {
+    if (program.stage != Stage::Fragment) {
+        return false;
+    }
+    for (const IR::Block* block : program.post_order_blocks) {
+        for (const IR::Inst& inst : block->Instructions()) {
+            switch (inst.GetOpcode()) {
+            case IR::Opcode::ShuffleIndex:
+            case IR::Opcode::ShuffleUp:
+            case IR::Opcode::ShuffleDown:
+            case IR::Opcode::ShuffleButterfly:
+                break;
+            default:
+                continue;
+            }
+            const IR::Value shuffle_arg{inst.Arg(0)};
+            if (shuffle_arg.IsImmediate()) {
+                continue;
+            }
+            const IR::Inst* bitcast{shuffle_arg.InstRecursive()};
+            if (!bitcast || bitcast->GetOpcode() != IR::Opcode::BitCastU32F32) {
+                continue;
+            }
+            const IR::Value bitcast_arg{bitcast->Arg(0)};
+            if (bitcast_arg.IsImmediate()) {
+                continue;
+            }
+            const IR::Inst* attribute{bitcast_arg.InstRecursive()};
+            if (!attribute || attribute->GetOpcode() != IR::Opcode::GetAttribute) {
+                continue;
+            }
+            const IR::Attribute attr{attribute->Arg(0).Attribute()};
+            if (attr == IR::Attribute::PositionX || attr == IR::Attribute::PositionY) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
 } // namespace Shader::Optimization