From de2d5ecc29381fe1f3a0f9a02ffd876985acdc1f Mon Sep 17 00:00:00 2001
From: IndecisiveTurtle <47210458+raphaelthegreat@users.noreply.github.com>
Date: Tue, 30 Jul 2024 19:48:04 +0300
Subject: [PATCH] shader_recompiler: Port some dark souls things

---
 .../frontend/translate/scalar_alu.cpp         | 20 +++++++++++++++++++
 .../frontend/translate/translate.h            |  3 +++
 .../frontend/translate/vector_alu.cpp         |  6 ++++++
 3 files changed, 29 insertions(+)

diff --git a/src/shader_recompiler/frontend/translate/scalar_alu.cpp b/src/shader_recompiler/frontend/translate/scalar_alu.cpp
index b6dc967fb..795b148d6 100644
--- a/src/shader_recompiler/frontend/translate/scalar_alu.cpp
+++ b/src/shader_recompiler/frontend/translate/scalar_alu.cpp
@@ -88,6 +88,10 @@ void Translator::EmitScalarAlu(const GcnInst& inst) {
     case Opcode::S_SUB_U32:
     case Opcode::S_SUB_I32:
         return S_SUB_U32(inst);
+    case Opcode::S_MIN_U32:
+        return S_MIN_U32(inst);
+    case Opcode::S_MAX_U32:
+        return S_MAX_U32(inst);
     case Opcode::S_WQM_B64:
         break;
     default:
@@ -443,4 +447,20 @@ void Translator::S_ADDC_U32(const GcnInst& inst) {
     SetDst(inst.dst[0], ir.IAdd(ir.IAdd(src0, src1), ir.GetSccLo()));
 }
 
+void Translator::S_MAX_U32(const GcnInst& inst) {
+    const IR::U32 src0{GetSrc(inst.src[0])};
+    const IR::U32 src1{GetSrc(inst.src[1])};
+    const IR::U32 result = ir.UMax(src0, src1);
+    SetDst(inst.dst[0], result);
+    ir.SetScc(ir.IEqual(result, src0));
+}
+
+void Translator::S_MIN_U32(const GcnInst& inst) {
+    const IR::U32 src0{GetSrc(inst.src[0])};
+    const IR::U32 src1{GetSrc(inst.src[1])};
+    const IR::U32 result = ir.UMin(src0, src1);
+    SetDst(inst.dst[0], result);
+    ir.SetScc(ir.IEqual(result, src0));
+}
+
 } // namespace Shader::Gcn
diff --git a/src/shader_recompiler/frontend/translate/translate.h b/src/shader_recompiler/frontend/translate/translate.h
index f57040d53..87f376d29 100644
--- a/src/shader_recompiler/frontend/translate/translate.h
+++ b/src/shader_recompiler/frontend/translate/translate.h
@@ -25,6 +25,7 @@ enum class ConditionOp : u32 {
     LT,
     LE,
     TRU,
+    U,
 };
 
 enum class AtomicOp : u32 {
@@ -95,6 +96,8 @@ public:
     void S_ADDC_U32(const GcnInst& inst);
     void S_MULK_I32(const GcnInst& inst);
     void S_ADDK_I32(const GcnInst& inst);
+    void S_MAX_U32(const GcnInst& inst);
+    void S_MIN_U32(const GcnInst& inst);
 
     // Scalar Memory
     void S_LOAD_DWORD(int num_dwords, const GcnInst& inst);
diff --git a/src/shader_recompiler/frontend/translate/vector_alu.cpp b/src/shader_recompiler/frontend/translate/vector_alu.cpp
index 11fffbebc..ba3c3ef3a 100644
--- a/src/shader_recompiler/frontend/translate/vector_alu.cpp
+++ b/src/shader_recompiler/frontend/translate/vector_alu.cpp
@@ -111,6 +111,8 @@ void Translator::EmitVectorAlu(const GcnInst& inst) {
         return V_CMP_F32(ConditionOp::LE, false, inst);
     case Opcode::V_CMP_NGE_F32:
         return V_CMP_F32(ConditionOp::LT, false, inst);
+    case Opcode::V_CMP_U_F32:
+        return V_CMP_F32(ConditionOp::U, false, inst);
     case Opcode::V_CNDMASK_B32:
         return V_CNDMASK_B32(inst);
     case Opcode::V_MAX_I32:
@@ -293,6 +295,8 @@ void Translator::EmitVectorAlu(const GcnInst& inst) {
         return V_CMP_U32(ConditionOp::GE, false, true, inst);
     case Opcode::V_CMPX_TRU_U32:
         return V_CMP_U32(ConditionOp::TRU, false, true, inst);
+    case Opcode::V_CMPX_LG_I32:
+        return V_CMP_U32(ConditionOp::LG, true, true, inst);
 
     case Opcode::V_MBCNT_LO_U32_B32:
         return V_MBCNT_U32_B32(true, inst);
@@ -518,6 +522,8 @@ void Translator::V_CMP_F32(ConditionOp op, bool set_exec, const GcnInst& inst) {
             return ir.FPLessThanEqual(src0, src1);
         case ConditionOp::GE:
             return ir.FPGreaterThanEqual(src0, src1);
+        case ConditionOp::U:
+            return ir.LogicalNot(ir.LogicalAnd(ir.FPIsNan(src0), ir.FPIsNan(src1)));
         default:
             UNREACHABLE();
         }