New shader translator implementation (#654)

* Start implementing a new shader translator

* Fix shift instructions and a typo

* Small refactoring on StructuredProgram, move RemovePhis method to a separate class

* Initial geometry shader support

* Implement TLD4

* Fix -- There's no negation on FMUL32I

* Add constant folding and algebraic simplification optimizations, nits

* Some leftovers from constant folding

* Avoid cast for constant assignments

* Add a branch elimination pass, and misc small fixes

* Remove redundant branches, add expression propagation and other improvements on the code

* Small leftovers -- add missing break and continue, remove unused properties, other improvements

* Add null check to handle empty block cases on block visitor

* Add HADD2 and HMUL2 half float shader instructions

* Optimize pack/unpack sequences, some fixes related to half float instructions

* Add TXQ, TLD, TLDS and TLD4S shader texture instructions, and some support for bindless textures, some refactoring on codegen

* Fix copy paste mistake that caused RZ to be ignored on the AST instruction

* Add workaround for conditional exit, and fix half float instruction with constant buffer

* Add missing 0.0 source for TLDS.LZ variants

* Simplify the switch for TLDS.LZ

* Texture instructions related fixes

* Implement the HFMA instruction, and some misc. fixes

* Enable constant folding on UnpackHalf2x16 instructions

* Refactor HFMA to use OpCode* for opcode decoding rather than on the helper methods

* Remove the old shader translator

* Remove ShaderDeclInfo and other unused things

* Add dual vertex shader support

* Add ShaderConfig, used to pass shader type and maximum cbuffer size

* Move and rename some instruction enums

* Move texture instructions into a separate file

* Move operand GetExpression and locals management to OperandManager

* Optimize opcode decoding using a simple list and binary search

* Add missing condition for do-while on goto elimination

* Misc. fixes on texture instructions

* Simplify TLDS switch

* Address PR feedback, and a nit

1 files changed, 62 insertions, 0 deletions

diff --git a/Ryujinx.Graphics/Shader/IntermediateRepresentation/OperandHelper.cs b/Ryujinx.Graphics/Shader/IntermediateRepresentation/OperandHelper.cs
new file mode 100644
index 00000000..6765f8a4
--- /dev/null
+++ b/Ryujinx.Graphics/Shader/IntermediateRepresentation/OperandHelper.cs
@@ -0,0 +1,62 @@
+using Ryujinx.Graphics.Shader.Decoders;
+using System;
+
+namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
+{
+    static class OperandHelper
+    {
+        public static Operand Attribute(int value)
+        {
+            return new Operand(OperandType.Attribute, value);
+        }
+
+        public static Operand Cbuf(int slot, int offset)
+        {
+            return new Operand(slot, offset);
+        }
+
+        public static Operand Const(int value)
+        {
+            return new Operand(OperandType.Constant, value);
+        }
+
+        public static Operand ConstF(float value)
+        {
+            return new Operand(OperandType.Constant, BitConverter.SingleToInt32Bits(value));
+        }
+
+        public static Operand Label()
+        {
+            return new Operand(OperandType.Label);
+        }
+
+        public static Operand Local()
+        {
+            return new Operand(OperandType.LocalVariable);
+        }
+
+        public static Operand Register(int index, RegisterType type)
+        {
+            return Register(new Register(index, type));
+        }
+
+        public static Operand Register(Register reg)
+        {
+            if (reg.IsRZ)
+            {
+                return Const(0);
+            }
+            else if (reg.IsPT)
+            {
+                return Const(IrConsts.True);
+            }
+
+            return new Operand(reg);
+        }
+
+        public static Operand Undef()
+        {
+            return new Operand(OperandType.Undefined);
+        }
+    }
+}
\ No newline at end of file