From 8cd241ca10248786158acade0f7a0bcb725bc7e2 Mon Sep 17 00:00:00 2001
From: kd-11 <karokidii@gmail.com>
Date: Sun, 7 Dec 2025 23:18:47 +0300
Subject: [PATCH] rsx/fp: Implement OR16_LO and OR16_HI instructions

---
 rpcs3/Emu/RSX/Program/FragmentProgramDecompiler.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/rpcs3/Emu/RSX/Program/FragmentProgramDecompiler.cpp b/rpcs3/Emu/RSX/Program/FragmentProgramDecompiler.cpp
index c8b6156065..73e907130e 100644
--- a/rpcs3/Emu/RSX/Program/FragmentProgramDecompiler.cpp
+++ b/rpcs3/Emu/RSX/Program/FragmentProgramDecompiler.cpp
@@ -1116,6 +1116,14 @@ bool FragmentProgramDecompiler::handle_sct_scb(u32 opcode)
 		return true;
 	case RSX_FP_OPCODE_PKB: SetDst(getFloatTypeName(4) + "(uintBitsToFloat(packUnorm4x8($0)))"); return true;
 	case RSX_FP_OPCODE_SIN: SetDst("sin($0.xxxx)"); return true;
+
+	// Custom ISA extensions for 16-bit OR
+	case RSX_FP_OPCODE_OR16_HI:
+		SetDst("$float4(uintBitsToFloat((floatBitsToUint($0.x) & 0x0000ffff) | (packHalf2x16($1.xx) & 0xffff0000)))");
+		return true;
+	case RSX_FP_OPCODE_OR16_LO:
+		SetDst("$float4(uintBitsToFloat((floatBitsToUint($0.x) & 0xffff0000) | (packHalf2x16($1.xx) & 0x0000ffff)))");
+		return true;
 	}
 	return false;
 }