[GPU] Fix casting on shader, support reading gl_Position.w on fragment shader

Ryujinx.Core/OsHle/Services/Vi/NvFlinger.cs

@@ -245,11 +245,15 @@ namespace Ryujinx.Core.OsHle.Services.Android
             int Slot = ParcelReader.ReadInt32();
 
             int BufferCount = ParcelReader.ReadInt32();
+
+            if (BufferCount > 0)
+            {
                 long BufferSize = ParcelReader.ReadInt64();
 
                 BufferQueue[Slot].State = BufferState.Free;
 
                 BufferQueue[Slot].Data = new GbpBuffer(ParcelReader);
+            }
 
             return MakeReplyParcel(Context, 0);
         }
@@ -429,7 +433,7 @@ namespace Ryujinx.Core.OsHle.Services.Android
                         break;
                     }
 
-                    Logging.Debug("Waiting for a free BufferQueue slot...");
+                    Logging.Info("Waiting for a free BufferQueue slot...");
 
                     if (!KeepRunning)
                     {
@@ -443,7 +447,7 @@ namespace Ryujinx.Core.OsHle.Services.Android
             }
             while (KeepRunning);
 
-            Logging.Debug($"Found free BufferQueue slot {Slot}!");
+            Logging.Info($"Found free BufferQueue slot {Slot}!");
 
             return Slot;
         }

Ryujinx.Graphics/Gal/Shader/GlslDecl.cs

@@ -5,6 +5,7 @@ namespace Ryujinx.Graphics.Gal.Shader
     class GlslDecl
     {
         public const int VertexIdAttr    = 0x2fc;
+        public const int GlPositionWAttr = 0x7c;
 
         private const int AttrStartIndex = 8;
         private const int TexStartIndex = 8;

Ryujinx.Graphics/Gal/Shader/GlslDecompiler.cs

@@ -302,8 +302,7 @@ namespace Ryujinx.Graphics.Gal.Shader
                         throw new NotImplementedException(Op.Inst.ToString());
                     }
 
-                    if (!Entry && (Op.OperandB != null ||
+                    if (!Entry && NeedsParentheses(Op))
-                                   Op.OperandC != null))
                     {
                         Expr = "(" + Expr + ")";
                     }
@@ -314,6 +313,25 @@ namespace Ryujinx.Graphics.Gal.Shader
             }
         }
 
+        private static bool NeedsParentheses(ShaderIrOp Op)
+        {
+            switch (Op.Inst)
+            {
+                case ShaderIrInst.Frcp:
+                    return true;
+
+                case ShaderIrInst.Ipa:
+                case ShaderIrInst.Texr:
+                case ShaderIrInst.Texg:
+                case ShaderIrInst.Texb:
+                case ShaderIrInst.Texa:
+                    return false;
+            }
+
+            return Op.OperandB != null ||
+                   Op.OperandC != null;
+        }
+
         private string GetName(ShaderIrOperCbuf Cbuf)
         {
             if (!Decl.Uniforms.TryGetValue((Cbuf.Index, Cbuf.Offs), out ShaderDeclInfo DeclInfo))
@@ -331,16 +349,21 @@ namespace Ryujinx.Graphics.Gal.Shader
 
         private string GetName(ShaderIrOperAbuf Abuf)
         {
-            return GetName(Decl.InAttributes, Abuf);
+            if (Abuf.Offs == GlslDecl.GlPositionWAttr && Decl.ShaderType == GalShaderType.Fragment)
+            {
+                return "(1f / gl_FragCoord.w)";
             }
 
-        private string GetName(IReadOnlyDictionary<int, ShaderDeclInfo> Dict, ShaderIrOperAbuf Abuf)
-        {
             if (Abuf.Offs == GlslDecl.VertexIdAttr)
             {
                 return "gl_VertexID";
             }
 
+            return GetName(Decl.InAttributes, Abuf);
+        }
+
+        private string GetName(IReadOnlyDictionary<int, ShaderDeclInfo> Dict, ShaderIrOperAbuf Abuf)
+        {
             int Index =  Abuf.Offs >> 4;
             int Elem  = (Abuf.Offs >> 2) & 3;
 
@@ -439,7 +462,7 @@ namespace Ryujinx.Graphics.Gal.Shader
 
         private string GetFnegExpr(ShaderIrOp Op) => GetUnaryExpr(Op, "-");
 
-        private string GetFrcpExpr(ShaderIrOp Op) => GetUnaryExpr(Op, "1 / ");
+        private string GetFrcpExpr(ShaderIrOp Op) => GetUnaryExpr(Op, "1f / ");
 
         private string GetFrsqExpr(ShaderIrOp Op) => GetUnaryCall(Op, "inversesqrt");
 
@@ -451,7 +474,7 @@ namespace Ryujinx.Graphics.Gal.Shader
 
         private string GetLsrExpr(ShaderIrOp Op)
         {
-            return "(int)((uint)" + GetOperExpr(Op, Op.OperandA) + " >> " +
+            return "int(uint(" + GetOperExpr(Op, Op.OperandA) + ") >> " +
                                  GetOperExpr(Op, Op.OperandB) + ")";
         }
 
@@ -459,8 +482,15 @@ namespace Ryujinx.Graphics.Gal.Shader
 
         private string GetOrExpr(ShaderIrOp Op) => GetBinaryExpr(Op, "|");
 
-        private string GetStofExpr(ShaderIrOp Op) => GetUnaryExpr(Op, "(float)");
+        private string GetStofExpr(ShaderIrOp Op)
-        private string GetUtofExpr(ShaderIrOp Op) => GetUnaryExpr(Op, "(float)(uint)");
+        {
+            return "float(" + GetOperExpr(Op, Op.OperandA) + ")";
+        }
+
+        private string GetUtofExpr(ShaderIrOp Op)
+        {
+            return "float(uint(" + GetOperExpr(Op, Op.OperandA) + "))";
+        }
 
         private string GetXorExpr(ShaderIrOp Op) => GetBinaryExpr(Op, "^");
 

Ryujinx.Graphics/Gpu/NvGpuEngine3d.cs

@@ -63,8 +63,6 @@ namespace Ryujinx.Graphics.Gpu
             }
         }
 
-        private const long GoodFbAddress = 0x1615b2a00;
-
         private void VertexEndGl(AMemory Memory, NsGpuPBEntry PBEntry)
         {
             SetFrameBuffer(0);

Ryujinx/Ui/Program.cs

@@ -12,6 +12,8 @@ namespace Ryujinx
     {
         static void Main(string[] args)
         {
+            //Ryujinx.Graphics.Gal.Shader.ShaderTest.PrintGlslProgram(File.ReadAllBytes("D:\\shbh_000000000048ba30.bin"));
+
             Config.Read();
 
             AOptimizations.DisableMemoryChecks = !Config.EnableMemoryChecks;