From 6b23a2c125b9c48b5ebea92716004ef68698bb0f Mon Sep 17 00:00:00 2001
From: gdkchan <gab.dark.100@gmail.com>
Date: Wed, 17 Apr 2019 20:57:08 -0300
Subject: 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
---
 .../Shader/IntermediateRepresentation/Operand.cs   | 79 ++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 Ryujinx.Graphics/Shader/IntermediateRepresentation/Operand.cs

(limited to 'Ryujinx.Graphics/Shader/IntermediateRepresentation/Operand.cs')

diff --git a/Ryujinx.Graphics/Shader/IntermediateRepresentation/Operand.cs b/Ryujinx.Graphics/Shader/IntermediateRepresentation/Operand.cs
new file mode 100644
index 00000000..1df88a3d
--- /dev/null
+++ b/Ryujinx.Graphics/Shader/IntermediateRepresentation/Operand.cs
@@ -0,0 +1,79 @@
+using Ryujinx.Graphics.Shader.Decoders;
+using System;
+using System.Collections.Generic;
+
+namespace Ryujinx.Graphics.Shader.IntermediateRepresentation
+{
+    class Operand
+    {
+        private const int CbufSlotBits = 5;
+        private const int CbufSlotLsb  = 32 - CbufSlotBits;
+        private const int CbufSlotMask = (1 << CbufSlotBits) - 1;
+
+        public OperandType Type { get; }
+
+        public int Value { get; }
+
+        public INode AsgOp { get; set; }
+
+        public HashSet<INode> UseOps { get; }
+
+        private Operand()
+        {
+            UseOps = new HashSet<INode>();
+        }
+
+        public Operand(OperandType type) : this()
+        {
+            Type = type;
+        }
+
+        public Operand(OperandType type, int value) : this()
+        {
+            Type  = type;
+            Value = value;
+        }
+
+        public Operand(Register reg) : this()
+        {
+            Type  = OperandType.Register;
+            Value = PackRegInfo(reg.Index, reg.Type);
+        }
+
+        public Operand(int slot, int offset) : this()
+        {
+            Type  = OperandType.ConstantBuffer;
+            Value = PackCbufInfo(slot, offset);
+        }
+
+        private static int PackCbufInfo(int slot, int offset)
+        {
+            return (slot << CbufSlotLsb) | offset;
+        }
+
+        private static int PackRegInfo(int index, RegisterType type)
+        {
+            return ((int)type << 24) | index;
+        }
+
+        public int GetCbufSlot()
+        {
+            return (Value >> CbufSlotLsb) & CbufSlotMask;
+        }
+
+        public int GetCbufOffset()
+        {
+            return Value & ~(CbufSlotMask << CbufSlotLsb);
+        }
+
+        public Register GetRegister()
+        {
+            return new Register(Value & 0xffffff, (RegisterType)(Value >> 24));
+        }
+
+        public float AsFloat()
+        {
+            return BitConverter.Int32BitsToSingle(Value);
+        }
+    }
+}
\ No newline at end of file
-- 
cgit v1.2.3