Initial work

Ryujinx.Graphics.Shader/Translation/EmitterContext.cs

@@ -0,0 +1,104 @@
+using Ryujinx.Graphics.Shader.Decoders;
+using Ryujinx.Graphics.Shader.IntermediateRepresentation;
+using System.Collections.Generic;
+
+using static Ryujinx.Graphics.Shader.IntermediateRepresentation.OperandHelper;
+
+namespace Ryujinx.Graphics.Shader.Translation
+{
+    class EmitterContext
+    {
+        public Block  CurrBlock { get; set; }
+        public OpCode CurrOp    { get; set; }
+
+        private ShaderStage _stage;
+
+        private ShaderHeader _header;
+
+        private List<Operation> _operations;
+
+        private Dictionary<ulong, Operand> _labels;
+
+        public EmitterContext(ShaderStage stage, ShaderHeader header)
+        {
+            _stage  = stage;
+            _header = header;
+
+            _operations = new List<Operation>();
+
+            _labels = new Dictionary<ulong, Operand>();
+        }
+
+        public Operand Add(Instruction inst, Operand dest = null, params Operand[] sources)
+        {
+            Operation operation = new Operation(inst, dest, sources);
+
+            Add(operation);
+
+            return dest;
+        }
+
+        public void Add(Operation operation)
+        {
+            _operations.Add(operation);
+        }
+
+        public void MarkLabel(Operand label)
+        {
+            Add(Instruction.MarkLabel, label);
+        }
+
+        public Operand GetLabel(ulong address)
+        {
+            if (!_labels.TryGetValue(address, out Operand label))
+            {
+                label = Label();
+
+                _labels.Add(address, label);
+            }
+
+            return label;
+        }
+
+        public void PrepareForReturn()
+        {
+            if (_stage == ShaderStage.Fragment)
+            {
+                if (_header.OmapDepth)
+                {
+                    Operand dest = Attribute(AttributeConsts.FragmentOutputDepth);
+
+                    Operand src = Register(_header.DepthRegister, RegisterType.Gpr);
+
+                    this.Copy(dest, src);
+                }
+
+                int regIndex = 0;
+
+                for (int attachment = 0; attachment < 8; attachment++)
+                {
+                    OutputMapTarget target = _header.OmapTargets[attachment];
+
+                    for (int component = 0; component < 4; component++)
+                    {
+                        if (target.ComponentEnabled(component))
+                        {
+                            Operand dest = Attribute(AttributeConsts.FragmentOutputColorBase + regIndex * 4);
+
+                            Operand src = Register(regIndex, RegisterType.Gpr);
+
+                            this.Copy(dest, src);
+
+                            regIndex++;
+                        }
+                    }
+                }
+            }
+        }
+
+        public Operation[] GetOperations()
+        {
+            return _operations.ToArray();
+        }
+    }
+}