From ccf4fc3b8d2f5c8fe16ccb33cff812b7f65078ee Mon Sep 17 00:00:00 2001
From: martin <martincharles07@gmail.com>
Date: Wed, 4 Sep 2024 15:41:51 -0500
Subject: [PATCH] add V_CVT_PKNORM_U16_F32

ok time to give it a good old college try next
---
 .../frontend/translate/translate.h            |  3 ++-
 .../frontend/translate/vector_alu.cpp         | 23 +++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/src/shader_recompiler/frontend/translate/translate.h b/src/shader_recompiler/frontend/translate/translate.h
index 6efdc8974..77e30485b 100644
--- a/src/shader_recompiler/frontend/translate/translate.h
+++ b/src/shader_recompiler/frontend/translate/translate.h
@@ -114,6 +114,7 @@ public:
     void V_SAD(const GcnInst& inst);
     void V_MAC_F32(const GcnInst& inst);
     void V_CVT_PKRTZ_F16_F32(const GcnInst& inst);
+    void V_CVT_PKNORM_U16_F32(const GcnInst& inst);
     void V_CVT_F32_F16(const GcnInst& inst);
     void V_CVT_F16_F32(const GcnInst& inst);
     void V_MUL_F32(const GcnInst& inst);
@@ -232,7 +233,7 @@ private:
     [[nodiscard]] T GetSrc64(const InstOperand& operand);
     void SetDst(const InstOperand& operand, const IR::U32F32& value);
     void SetDst64(const InstOperand& operand, const IR::U64F64& value_raw);
-
+    IR::U16 Convert_F32_to_U16_Normalized(const IR::F32& src);
     void LogMissingOpcode(const GcnInst& inst);
 
 private:
diff --git a/src/shader_recompiler/frontend/translate/vector_alu.cpp b/src/shader_recompiler/frontend/translate/vector_alu.cpp
index a07e70785..06fa4c37d 100644
--- a/src/shader_recompiler/frontend/translate/vector_alu.cpp
+++ b/src/shader_recompiler/frontend/translate/vector_alu.cpp
@@ -52,6 +52,8 @@ void Translator::EmitVectorAlu(const GcnInst& inst) {
         return V_CVT_F32_U32(inst);
     case Opcode::V_CVT_PKRTZ_F16_F32:
         return V_CVT_PKRTZ_F16_F32(inst);
+    case Opcode::V_CVT_PKNORM_U16_F32:
+        return V_CVT_PKNORM_U16_F32(inst);
     case Opcode::V_CVT_F32_F16:
         return V_CVT_F32_F16(inst);
     case Opcode::V_CVT_F16_F32:
@@ -342,6 +344,27 @@ void Translator::V_CVT_PKRTZ_F16_F32(const GcnInst& inst) {
     ir.SetVectorReg(dst_reg, ir.PackHalf2x16(vec_f32));
 }
 
+IR::U16 Translator::Convert_F32_to_U16_Normalized(const IR::F32& src) {
+    const IR::F32 as_float = ir.FPMul(src, ir.Imm32((f32)std::numeric_limits<u16>::max()));
+    const IR::U32 as_unsigned = ir.ConvertFToU(32, as_float);
+    return ir.UConvert(16, as_unsigned);
+}
+
+void Translator::V_CVT_PKNORM_U16_F32(const GcnInst& inst) {
+    const IR::VectorReg dst_reg{inst.dst[0].code};
+
+    const IR::F32 src0 = GetSrc<IR::F32>(inst.src[0]);
+    const IR::F32 src1 = GetSrc<IR::F32>(inst.src[1]);
+
+    const IR::Value vec_u16 =
+        ir.CompositeConstruct(
+            Convert_F32_to_U16_Normalized(src0),
+            Convert_F32_to_U16_Normalized(src1)
+        );
+
+    ir.SetVectorReg(dst_reg, ir.PackHalf2x16(vec_u16));
+}
+
 void Translator::V_CVT_F32_F16(const GcnInst& inst) {
     const IR::U32 src0 = GetSrc(inst.src[0]);
     const IR::U16 src0l = ir.UConvert(16, src0);