Rewrite shader decoding stage (#2698)

* Rewrite shader decoding stage * Fix P2R constant buffer encoding * Fix PSET/PSETP * PR feedback * Log unimplemented shader instructions * Implement NOP * Remove using * PR feedback
2021-10-12 17:35:31 -03:00
parent 0510fde25a
commit a7109c767b
168 changed files with 12022 additions and 6388 deletions
--- a/Ryujinx.Graphics.Shader/Instructions/InstEmitShift.cs
+++ b/Ryujinx.Graphics.Shader/Instructions/InstEmitShift.cs
@ -0,0 +1,132 @@
+using Ryujinx.Graphics.Shader.Decoders;
+using Ryujinx.Graphics.Shader.IntermediateRepresentation;
+using Ryujinx.Graphics.Shader.Translation;
+
+using static Ryujinx.Graphics.Shader.Instructions.InstEmitHelper;
+using static Ryujinx.Graphics.Shader.IntermediateRepresentation.OperandHelper;
+
+namespace Ryujinx.Graphics.Shader.Instructions
+{
+    static partial class InstEmit
+    {
+        public static void ShlR(EmitterContext context)
+        {
+            InstShlR op = context.GetOp<InstShlR>();
+
+            EmitShl(context, GetSrcReg(context, op.SrcA), GetSrcReg(context, op.SrcB), op.Dest, op.M);
+        }
+
+        public static void ShlI(EmitterContext context)
+        {
+            InstShlI op = context.GetOp<InstShlI>();
+
+            EmitShl(context, GetSrcReg(context, op.SrcA), GetSrcImm(context, Imm20ToSInt(op.Imm20)), op.Dest, op.M);
+        }
+
+        public static void ShlC(EmitterContext context)
+        {
+            InstShlC op = context.GetOp<InstShlC>();
+
+            EmitShl(context, GetSrcReg(context, op.SrcA), GetSrcCbuf(context, op.CbufSlot, op.CbufOffset), op.Dest, op.M);
+        }
+
+        public static void ShrR(EmitterContext context)
+        {
+            InstShrR op = context.GetOp<InstShrR>();
+
+            var srcA = GetSrcReg(context, op.SrcA);
+            var srcB = GetSrcReg(context, op.SrcB);
+
+            EmitShr(context, srcA, srcB, op.Dest, op.M, op.Brev, op.Signed);
+        }
+
+        public static void ShrI(EmitterContext context)
+        {
+            InstShrI op = context.GetOp<InstShrI>();
+
+            var srcA = GetSrcReg(context, op.SrcA);
+            var srcB = GetSrcImm(context, Imm20ToSInt(op.Imm20));
+
+            EmitShr(context, srcA, srcB, op.Dest, op.M, op.Brev, op.Signed);
+        }
+
+        public static void ShrC(EmitterContext context)
+        {
+            InstShrC op = context.GetOp<InstShrC>();
+
+            var srcA = GetSrcReg(context, op.SrcA);
+            var srcB = GetSrcCbuf(context, op.CbufSlot, op.CbufOffset);
+
+            EmitShr(context, srcA, srcB, op.Dest, op.M, op.Brev, op.Signed);
+        }
+
+        private static void EmitShl(EmitterContext context, Operand srcA, Operand srcB, int rd, bool mask)
+        {
+            if (mask)
+            {
+                srcB = context.BitwiseAnd(srcB, Const(0x1f));
+            }
+
+            Operand res = context.ShiftLeft(srcA, srcB);
+
+            if (!mask)
+            {
+                // Clamped shift value.
+                Operand isLessThan32 = context.ICompareLessUnsigned(srcB, Const(32));
+
+                res = context.ConditionalSelect(isLessThan32, res, Const(0));
+            }
+
+            // TODO: X, CC.
+
+            context.Copy(GetDest(rd), res);
+        }
+
+        private static void EmitShr(
+            EmitterContext context,
+            Operand srcA,
+            Operand srcB,
+            int rd,
+            bool mask,
+            bool bitReverse,
+            bool isSigned)
+        {
+            if (bitReverse)
+            {
+                srcA = context.BitfieldReverse(srcA);
+            }
+
+            if (mask)
+            {
+                srcB = context.BitwiseAnd(srcB, Const(0x1f));
+            }
+
+            Operand res = isSigned
+                ? context.ShiftRightS32(srcA, srcB)
+                : context.ShiftRightU32(srcA, srcB);
+
+            if (!mask)
+            {
+                // Clamped shift value.
+                Operand resShiftBy32;
+
+                if (isSigned)
+                {
+                    resShiftBy32 = context.ShiftRightS32(srcA, Const(31));
+                }
+                else
+                {
+                    resShiftBy32 = Const(0);
+                }
+
+                Operand isLessThan32 = context.ICompareLessUnsigned(srcB, Const(32));
+
+                res = context.ConditionalSelect(isLessThan32, res, resShiftBy32);
+            }
+
+            // TODO: X, CC.
+
+            context.Copy(GetDest(rd), res);
+        }
+    }
+}