From bccd6ec41fa3a75bbb8a4081f508345e4e0d7aae Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Mon, 2 Mar 2020 00:35:07 -0300
Subject: [PATCH] Correct double immediate

---
 .../Decoders/DecoderHelper.cs                    | 16 ++++++++++++++++
 .../Decoders/OpCodeDArithImm.cs                  | 14 ++++++++++++++
 Ryujinx.Graphics.Shader/Decoders/OpCodeTable.cs  |  6 +++---
 3 files changed, 33 insertions(+), 3 deletions(-)
 create mode 100644 Ryujinx.Graphics.Shader/Decoders/OpCodeDArithImm.cs

diff --git a/Ryujinx.Graphics.Shader/Decoders/DecoderHelper.cs b/Ryujinx.Graphics.Shader/Decoders/DecoderHelper.cs
index 77cd1bf728..7ee9ccb60f 100644
--- a/Ryujinx.Graphics.Shader/Decoders/DecoderHelper.cs
+++ b/Ryujinx.Graphics.Shader/Decoders/DecoderHelper.cs
@@ -54,5 +54,21 @@ namespace Ryujinx.Graphics.Shader.Decoders
 
             return BitConverter.Int32BitsToSingle(imm);
         }
+
+        public static float DecodeD20Immediate(long opCode)
+        {
+            long imm = opCode.Extract(20, 19);
+
+            bool negate = opCode.Extract(56);
+
+            imm <<= 44;
+
+            if (negate)
+            {
+                imm |= 1 << 63;
+            }
+
+            return (float)BitConverter.Int64BitsToDouble(imm);
+        }
     }
 }
\ No newline at end of file
diff --git a/Ryujinx.Graphics.Shader/Decoders/OpCodeDArithImm.cs b/Ryujinx.Graphics.Shader/Decoders/OpCodeDArithImm.cs
new file mode 100644
index 0000000000..99d4cdfdd1
--- /dev/null
+++ b/Ryujinx.Graphics.Shader/Decoders/OpCodeDArithImm.cs
@@ -0,0 +1,14 @@
+using Ryujinx.Graphics.Shader.Instructions;
+
+namespace Ryujinx.Graphics.Shader.Decoders
+{
+    class OpCodeDArithImm : OpCodeFArith, IOpCodeImmF
+    {
+        public float Immediate { get; }
+
+        public OpCodeDArithImm(InstEmitter emitter, ulong address, long opCode) : base(emitter, address, opCode)
+        {
+            Immediate = DecoderHelper.DecodeD20Immediate(opCode);
+        }
+    }
+}
\ No newline at end of file
diff --git a/Ryujinx.Graphics.Shader/Decoders/OpCodeTable.cs b/Ryujinx.Graphics.Shader/Decoders/OpCodeTable.cs
index 0186af38d2..72f66f4aa3 100644
--- a/Ryujinx.Graphics.Shader/Decoders/OpCodeTable.cs
+++ b/Ryujinx.Graphics.Shader/Decoders/OpCodeTable.cs
@@ -46,14 +46,14 @@ namespace Ryujinx.Graphics.Shader.Decoders
             Set("111000100101xx", InstEmit.Brx,     typeof(OpCodeBranchIndir));
             Set("0101000010100x", InstEmit.Csetp,   typeof(OpCodePset));
             Set("0100110001110x", InstEmit.Dadd,    typeof(OpCodeFArithCbuf));
-            Set("0011100x01110x", InstEmit.Dadd,    typeof(OpCodeFArithImm));
+            Set("0011100x01110x", InstEmit.Dadd,    typeof(OpCodeDArithImm));
             Set("0101110001110x", InstEmit.Dadd,    typeof(OpCodeFArithReg));
             Set("010010110111xx", InstEmit.Dfma,    typeof(OpCodeFArithCbuf));
-            Set("0011011x0111xx", InstEmit.Dfma,    typeof(OpCodeFArithImm));
+            Set("0011011x0111xx", InstEmit.Dfma,    typeof(OpCodeDArithImm));
             Set("010100110111xx", InstEmit.Dfma,    typeof(OpCodeFArithRegCbuf));
             Set("010110110111xx", InstEmit.Dfma,    typeof(OpCodeFArithReg));
             Set("0100110010000x", InstEmit.Dmul,    typeof(OpCodeFArithCbuf));
-            Set("0011100x10000x", InstEmit.Dmul,    typeof(OpCodeFArithImm));
+            Set("0011100x10000x", InstEmit.Dmul,    typeof(OpCodeDArithImm));
             Set("0101110010000x", InstEmit.Dmul,    typeof(OpCodeFArithReg));
             Set("111000110000xx", InstEmit.Exit,    typeof(OpCodeExit));
             Set("0100110010101x", InstEmit.F2F,     typeof(OpCodeFArithCbuf));