8 files changed, 53 insertions, 1 deletions

diff --git a/src/shader_recompiler/frontend/ir/basic_block.cpp b/src/shader_recompiler/frontend/ir/basic_block.cpp
index 7c08b25ce..974efa4a0 100644
--- a/src/shader_recompiler/frontend/ir/basic_block.cpp
+++ b/src/shader_recompiler/frontend/ir/basic_block.cpp
@@ -22,6 +22,11 @@ void Block::AppendNewInst(Opcode op, std::initializer_list<Value> args) {
     PrependNewInst(end(), op, args);
 }
 
+Block::iterator Block::PrependNewInst(iterator insertion_point, const Inst& base_inst) {
+    Inst* const inst{inst_pool->Create(base_inst)};
+    return instructions.insert(insertion_point, *inst);
+}
+
 Block::iterator Block::PrependNewInst(iterator insertion_point, Opcode op,
                                       std::initializer_list<Value> args, u32 flags) {
     Inst* const inst{inst_pool->Create(op, flags)};
diff --git a/src/shader_recompiler/frontend/ir/basic_block.h b/src/shader_recompiler/frontend/ir/basic_block.h
index 9ce1ed07e..fbfe98266 100644
--- a/src/shader_recompiler/frontend/ir/basic_block.h
+++ b/src/shader_recompiler/frontend/ir/basic_block.h
@@ -40,6 +40,9 @@ public:
     /// Appends a new instruction to the end of this basic block.
     void AppendNewInst(Opcode op, std::initializer_list<Value> args);
 
+    /// Prepends a copy of an instruction to this basic block before the insertion point.
+    iterator PrependNewInst(iterator insertion_point, const Inst& base_inst);
+
     /// Prepends a new instruction to this basic block before the insertion point.
     iterator PrependNewInst(iterator insertion_point, Opcode op,
                             std::initializer_list<Value> args = {}, u32 flags = 0);
diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.cpp b/src/shader_recompiler/frontend/ir/ir_emitter.cpp
index 13159a68d..356f889ac 100644
--- a/src/shader_recompiler/frontend/ir/ir_emitter.cpp
+++ b/src/shader_recompiler/frontend/ir/ir_emitter.cpp
@@ -375,6 +375,10 @@ F32 IREmitter::YDirection() {
     return Inst<F32>(Opcode::YDirection);
 }
 
+F32 IREmitter::ResolutionDownFactor() {
+    return Inst<F32>(Opcode::ResolutionDownFactor);
+}
+
 U32 IREmitter::LaneId() {
     return Inst<U32>(Opcode::LaneId);
 }
@@ -1141,6 +1145,10 @@ U32 IREmitter::IMul(const U32& a, const U32& b) {
     return Inst<U32>(Opcode::IMul32, a, b);
 }
 
+U32 IREmitter::IDiv(const U32& a, const U32& b, bool is_signed) {
+    return Inst<U32>(is_signed ? Opcode::SDiv32 : Opcode::UDiv32, a, b);
+}
+
 U32U64 IREmitter::INeg(const U32U64& value) {
     switch (value.Type()) {
     case Type::U32:
@@ -1938,6 +1946,14 @@ Value IREmitter::ImageAtomicExchange(const Value& handle, const Value& coords, c
     return Inst(op, Flags{info}, handle, coords, value);
 }
 
+U1 IREmitter::IsTextureScaled(const U32& index) {
+    return Inst<U1>(Opcode::IsTextureScaled, index);
+}
+
+U1 IREmitter::IsImageScaled(const U32& index) {
+    return Inst<U1>(Opcode::IsImageScaled, index);
+}
+
 U1 IREmitter::VoteAll(const U1& value) {
     return Inst<U1>(Opcode::VoteAll, value);
 }
diff --git a/src/shader_recompiler/frontend/ir/ir_emitter.h b/src/shader_recompiler/frontend/ir/ir_emitter.h
index 1b89ca5a0..13eefa88b 100644
--- a/src/shader_recompiler/frontend/ir/ir_emitter.h
+++ b/src/shader_recompiler/frontend/ir/ir_emitter.h
@@ -102,6 +102,8 @@ public:
     [[nodiscard]] U1 IsHelperInvocation();
     [[nodiscard]] F32 YDirection();
 
+    [[nodiscard]] F32 ResolutionDownFactor();
+
     [[nodiscard]] U32 LaneId();
 
     [[nodiscard]] U32 LoadGlobalU8(const U64& address);
@@ -207,6 +209,7 @@ public:
     [[nodiscard]] U32U64 IAdd(const U32U64& a, const U32U64& b);
     [[nodiscard]] U32U64 ISub(const U32U64& a, const U32U64& b);
     [[nodiscard]] U32 IMul(const U32& a, const U32& b);
+    [[nodiscard]] U32 IDiv(const U32& a, const U32& b, bool is_signed = false);
     [[nodiscard]] U32U64 INeg(const U32U64& value);
     [[nodiscard]] U32 IAbs(const U32& value);
     [[nodiscard]] U32U64 ShiftLeftLogical(const U32U64& base, const U32& shift);
@@ -356,6 +359,10 @@ public:
                                        TextureInstInfo info);
     [[nodiscard]] Value ImageAtomicExchange(const Value& handle, const Value& coords,
                                             const Value& value, TextureInstInfo info);
+
+    [[nodiscard]] U1 IsTextureScaled(const U32& index);
+    [[nodiscard]] U1 IsImageScaled(const U32& index);
+
     [[nodiscard]] U1 VoteAll(const U1& value);
     [[nodiscard]] U1 VoteAny(const U1& value);
     [[nodiscard]] U1 VoteEqual(const U1& value);
diff --git a/src/shader_recompiler/frontend/ir/microinstruction.cpp b/src/shader_recompiler/frontend/ir/microinstruction.cpp
index 30b470bdd..97e2bf6af 100644
--- a/src/shader_recompiler/frontend/ir/microinstruction.cpp
+++ b/src/shader_recompiler/frontend/ir/microinstruction.cpp
@@ -47,6 +47,17 @@ Inst::Inst(IR::Opcode op_, u32 flags_) noexcept : op{op_}, flags{flags_} {
     }
 }
 
+Inst::Inst(const Inst& base) : op{base.op}, flags{base.flags} {
+    if (base.op == Opcode::Phi) {
+        throw NotImplementedException("Copying phi node");
+    }
+    std::construct_at(&args);
+    const size_t num_args{base.NumArgs()};
+    for (size_t index = 0; index < num_args; ++index) {
+        SetArg(index, base.Arg(index));
+    }
+}
+
 Inst::~Inst() {
     if (op == Opcode::Phi) {
         std::destroy_at(&phi_args);
diff --git a/src/shader_recompiler/frontend/ir/opcodes.inc b/src/shader_recompiler/frontend/ir/opcodes.inc
index d91098c80..6929919df 100644
--- a/src/shader_recompiler/frontend/ir/opcodes.inc
+++ b/src/shader_recompiler/frontend/ir/opcodes.inc
@@ -62,6 +62,7 @@ OPCODE(InvocationId,                                        U32,
 OPCODE(SampleId,                                            U32,                                                                                            )
 OPCODE(IsHelperInvocation,                                  U1,                                                                                             )
 OPCODE(YDirection,                                          F32,                                                                                            )
+OPCODE(ResolutionDownFactor,                                F32,                                                                                            )
 
 // Undefined
 OPCODE(UndefU1,                                             U1,                                                                                             )
@@ -286,6 +287,8 @@ OPCODE(IAdd64,                                              U64,            U64,
 OPCODE(ISub32,                                              U32,            U32,            U32,                                                            )
 OPCODE(ISub64,                                              U64,            U64,            U64,                                                            )
 OPCODE(IMul32,                                              U32,            U32,            U32,                                                            )
+OPCODE(SDiv32,                                              U32,            U32,            U32,                                                            )
+OPCODE(UDiv32,                                              U32,            U32,            U32,                                                            )
 OPCODE(INeg32,                                              U32,            U32,                                                                            )
 OPCODE(INeg64,                                              U64,            U64,                                                                            )
 OPCODE(IAbs32,                                              U32,            U32,                                                                            )
@@ -490,6 +493,9 @@ OPCODE(ImageGradient,                                       F32x4,          Opaq
 OPCODE(ImageRead,                                           U32x4,          Opaque,         Opaque,                                                         )
 OPCODE(ImageWrite,                                          Void,           Opaque,         Opaque,         U32x4,                                          )
 
+OPCODE(IsTextureScaled,                                     U1,             U32,                                                                            )
+OPCODE(IsImageScaled,                                       U1,             U32,                                                                            )
+
 // Atomic Image operations
 
 OPCODE(BindlessImageAtomicIAdd32,                           U32,            U32,            Opaque,            U32,                                         )
diff --git a/src/shader_recompiler/frontend/ir/value.h b/src/shader_recompiler/frontend/ir/value.h
index 6c9ef6bdd..947579852 100644
--- a/src/shader_recompiler/frontend/ir/value.h
+++ b/src/shader_recompiler/frontend/ir/value.h
@@ -116,10 +116,10 @@ public:
 class Inst : public boost::intrusive::list_base_hook<> {
 public:
     explicit Inst(IR::Opcode op_, u32 flags_) noexcept;
+    explicit Inst(const Inst& base);
     ~Inst();
 
     Inst& operator=(const Inst&) = delete;
-    Inst(const Inst&) = delete;
 
     Inst& operator=(Inst&&) = delete;
     Inst(Inst&&) = delete;
diff --git a/src/shader_recompiler/frontend/maxwell/translate_program.cpp b/src/shader_recompiler/frontend/maxwell/translate_program.cpp
index 2fc542f0e..267ebe4af 100644
--- a/src/shader_recompiler/frontend/maxwell/translate_program.cpp
+++ b/src/shader_recompiler/frontend/maxwell/translate_program.cpp
@@ -179,6 +179,10 @@ IR::Program TranslateProgram(ObjectPool<IR::Inst>& inst_pool, ObjectPool<IR::Blo
     Optimization::TexturePass(env, program);
 
     Optimization::ConstantPropagationPass(program);
+
+    if (Settings::values.resolution_info.active) {
+        Optimization::RescalingPass(program);
+    }
     Optimization::DeadCodeEliminationPass(program);
     if (Settings::values.renderer_debug) {
         Optimization::VerificationPass(program);