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
2019-04-17 20:57:08 -03:00 · 2019-04-17 20:57:08 -03:00 · 6b23a2c125
commit 6b23a2c125
parent b2e88b04a8
207 changed files with 11514 additions and 6311 deletions
--- a/Ryujinx.Graphics/Shader/Translation/ControlFlowGraph.cs
+++ b/Ryujinx.Graphics/Shader/Translation/ControlFlowGraph.cs
@ -0,0 +1,108 @@
+using Ryujinx.Graphics.Shader.IntermediateRepresentation;
+using System.Collections.Generic;
+
+namespace Ryujinx.Graphics.Shader.Translation
+{
+    static class ControlFlowGraph
+    {
+        public static BasicBlock[] MakeCfg(Operation[] operations)
+        {
+            Dictionary<Operand, BasicBlock> labels = new Dictionary<Operand, BasicBlock>();
+
+            List<BasicBlock> blocks = new List<BasicBlock>();
+
+            BasicBlock currentBlock = null;
+
+            void NextBlock(BasicBlock nextBlock)
+            {
+                if (currentBlock != null && !EndsWithUnconditionalInst(currentBlock.GetLastOp()))
+                {
+                    currentBlock.Next = nextBlock;
+                }
+
+                currentBlock = nextBlock;
+            }
+
+            void NewNextBlock()
+            {
+                BasicBlock block = new BasicBlock(blocks.Count);
+
+                blocks.Add(block);
+
+                NextBlock(block);
+            }
+
+            bool needsNewBlock = true;
+
+            for (int index = 0; index < operations.Length; index++)
+            {
+                Operation operation = operations[index];
+
+                if (operation.Inst == Instruction.MarkLabel)
+                {
+                    Operand label = operation.Dest;
+
+                    if (labels.TryGetValue(label, out BasicBlock nextBlock))
+                    {
+                        nextBlock.Index = blocks.Count;
+
+                        blocks.Add(nextBlock);
+
+                        NextBlock(nextBlock);
+                    }
+                    else
+                    {
+                        NewNextBlock();
+
+                        labels.Add(label, currentBlock);
+                    }
+                }
+                else
+                {
+                    if (needsNewBlock)
+                    {
+                        NewNextBlock();
+                    }
+
+                    currentBlock.Operations.AddLast(operation);
+                }
+
+                needsNewBlock = operation.Inst == Instruction.Branch       ||
+                                operation.Inst == Instruction.BranchIfTrue ||
+                                operation.Inst == Instruction.BranchIfFalse;
+
+                if (needsNewBlock)
+                {
+                    Operand label = operation.Dest;
+
+                    if (!labels.TryGetValue(label, out BasicBlock branchBlock))
+                    {
+                        branchBlock = new BasicBlock();
+
+                        labels.Add(label, branchBlock);
+                    }
+
+                    currentBlock.Branch = branchBlock;
+                }
+            }
+
+            return blocks.ToArray();
+        }
+
+        private static bool EndsWithUnconditionalInst(INode node)
+        {
+            if (node is Operation operation)
+            {
+                switch (operation.Inst)
+                {
+                    case Instruction.Branch:
+                    case Instruction.Discard:
+                    case Instruction.Return:
+                        return true;
+                }
+            }
+
+            return false;
+        }
+    }
+}