325 lines
9.7 KiB
C#
325 lines
9.7 KiB
C#
using Ryujinx.Graphics.Shader.Decoders;
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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
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using Ryujinx.Graphics.Shader.Translation;
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using static Ryujinx.Graphics.Shader.Instructions.InstEmitHelper;
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using static Ryujinx.Graphics.Shader.IntermediateRepresentation.OperandHelper;
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namespace Ryujinx.Graphics.Shader.Instructions
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{
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static partial class InstEmit
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{
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public static void Ald(EmitterContext context)
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{
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OpCodeAttribute op = (OpCodeAttribute)context.CurrOp;
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Operand primVertex = context.Copy(GetSrcC(context));
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for (int index = 0; index < op.Count; index++)
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{
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Register rd = new Register(op.Rd.Index + index, RegisterType.Gpr);
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if (rd.IsRZ)
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{
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break;
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}
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Operand src = Attribute(op.AttributeOffset + index * 4);
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context.Copy(Register(rd), context.LoadAttribute(src, primVertex));
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}
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}
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public static void Ast(EmitterContext context)
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{
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OpCodeAttribute op = (OpCodeAttribute)context.CurrOp;
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for (int index = 0; index < op.Count; index++)
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{
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if (op.Rd.Index + index > RegisterConsts.RegisterZeroIndex)
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{
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break;
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}
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Register rd = new Register(op.Rd.Index + index, RegisterType.Gpr);
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Operand dest = Attribute(op.AttributeOffset + index * 4);
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context.Copy(dest, Register(rd));
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}
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}
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public static void Ipa(EmitterContext context)
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{
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OpCodeIpa op = (OpCodeIpa)context.CurrOp;
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InterpolationQualifier iq = InterpolationQualifier.None;
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switch (op.Mode)
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{
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case InterpolationMode.Pass: iq = InterpolationQualifier.NoPerspective; break;
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}
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Operand srcA = Attribute(op.AttributeOffset, iq);
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Operand srcB = GetSrcB(context);
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Operand res = context.FPSaturate(srcA, op.Saturate);
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context.Copy(GetDest(context), res);
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}
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public static void Isberd(EmitterContext context)
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{
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// This instruction performs a load from ISBE memory,
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// however it seems to be only used to get some vertex
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// input data, so we instead propagate the offset so that
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// it can be used on the attribute load.
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context.Copy(GetDest(context), GetSrcA(context));
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}
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public static void Ld(EmitterContext context)
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{
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LoadLocalOrGlobal(context, isGlobal: false);
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}
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public static void Ldc(EmitterContext context)
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{
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OpCodeLdc op = (OpCodeLdc)context.CurrOp;
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if (op.Size > IntegerSize.B64)
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{
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// TODO: Warning.
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}
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bool isSmallInt = op.Size < IntegerSize.B32;
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int count = op.Size == IntegerSize.B64 ? 2 : 1;
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Operand wordOffset = context.ShiftRightU32(GetSrcA(context), Const(2));
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wordOffset = context.IAdd(wordOffset, Const(op.Offset));
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Operand bitOffset = GetBitOffset(context, GetSrcA(context));
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for (int index = 0; index < count; index++)
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{
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Register rd = new Register(op.Rd.Index + index, RegisterType.Gpr);
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if (rd.IsRZ)
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{
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break;
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}
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Operand offset = context.IAdd(wordOffset, Const(index));
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Operand value = context.LoadConstant(Const(op.Slot), offset);
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if (isSmallInt)
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{
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value = ExtractSmallInt(context, op.Size, wordOffset, value);
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}
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context.Copy(Register(rd), value);
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}
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}
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public static void Ldg(EmitterContext context)
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{
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LoadLocalOrGlobal(context, isGlobal: true);
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}
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public static void Out(EmitterContext context)
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{
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OpCode op = context.CurrOp;
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bool emit = op.RawOpCode.Extract(39);
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bool cut = op.RawOpCode.Extract(40);
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if (!(emit || cut))
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{
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// TODO: Warning.
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}
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if (emit)
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{
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context.EmitVertex();
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}
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if (cut)
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{
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context.EndPrimitive();
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}
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}
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public static void St(EmitterContext context)
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{
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StoreLocalOrGlobal(context, isGlobal: false);
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}
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public static void Stg(EmitterContext context)
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{
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StoreLocalOrGlobal(context, isGlobal: true);
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}
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private static void LoadLocalOrGlobal(EmitterContext context, bool isGlobal)
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{
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OpCodeMemory op = (OpCodeMemory)context.CurrOp;
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if (op.Size > IntegerSize.B128)
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{
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// TODO: Warning.
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}
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bool isSmallInt = op.Size < IntegerSize.B32;
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int count = 1;
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switch (op.Size)
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{
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case IntegerSize.B64: count = 2; break;
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case IntegerSize.B128: count = 4; break;
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}
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Operand baseOffset = context.IAdd(GetSrcA(context), Const(op.Offset));
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// Word offset = byte offset / 4 (one word = 4 bytes).
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Operand wordOffset = context.ShiftRightU32(baseOffset, Const(2));
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Operand bitOffset = GetBitOffset(context, baseOffset);
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for (int index = 0; index < count; index++)
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{
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Register rd = new Register(op.Rd.Index + index, RegisterType.Gpr);
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if (rd.IsRZ)
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{
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break;
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}
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Operand offset = context.IAdd(wordOffset, Const(index));
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Operand value = isGlobal
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? context.LoadGlobal(offset)
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: context.LoadLocal (offset);
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if (isSmallInt)
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{
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value = ExtractSmallInt(context, op.Size, bitOffset, value);
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}
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context.Copy(Register(rd), value);
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}
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}
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private static void StoreLocalOrGlobal(EmitterContext context, bool isGlobal)
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{
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OpCodeMemory op = (OpCodeMemory)context.CurrOp;
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if (op.Size > IntegerSize.B128)
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{
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// TODO: Warning.
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}
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bool isSmallInt = op.Size < IntegerSize.B32;
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int count = 1;
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switch (op.Size)
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{
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case IntegerSize.B64: count = 2; break;
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case IntegerSize.B128: count = 4; break;
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}
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Operand baseOffset = context.IAdd(GetSrcA(context), Const(op.Offset));
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Operand wordOffset = context.ShiftRightU32(baseOffset, Const(2));
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Operand bitOffset = GetBitOffset(context, baseOffset);
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for (int index = 0; index < count; index++)
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{
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Register rd = new Register(op.Rd.Index + index, RegisterType.Gpr);
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if (rd.IsRZ)
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{
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break;
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}
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Operand value = Register(rd);
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Operand offset = context.IAdd(wordOffset, Const(index));
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if (isSmallInt)
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{
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Operand word = isGlobal
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? context.LoadGlobal(offset)
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: context.LoadLocal (offset);
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value = InsertSmallInt(context, op.Size, bitOffset, word, value);
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}
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if (isGlobal)
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{
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context.StoreGlobal(offset, value);
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}
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else
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{
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context.StoreLocal(offset, value);
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}
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}
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}
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private static Operand GetBitOffset(EmitterContext context, Operand baseOffset)
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{
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// Note: byte offset = (baseOffset & 0b11) * 8.
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// Addresses should be always aligned to the integer type,
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// so we don't need to take unaligned addresses into account.
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return context.ShiftLeft(context.BitwiseAnd(baseOffset, Const(3)), Const(3));
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}
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private static Operand ExtractSmallInt(
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EmitterContext context,
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IntegerSize size,
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Operand bitOffset,
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Operand value)
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{
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value = context.ShiftRightU32(value, bitOffset);
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switch (size)
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{
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case IntegerSize.U8: value = ZeroExtendTo32(context, value, 8); break;
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case IntegerSize.U16: value = ZeroExtendTo32(context, value, 16); break;
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case IntegerSize.S8: value = SignExtendTo32(context, value, 8); break;
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case IntegerSize.S16: value = SignExtendTo32(context, value, 16); break;
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}
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return value;
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}
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private static Operand InsertSmallInt(
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EmitterContext context,
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IntegerSize size,
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Operand bitOffset,
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Operand word,
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Operand value)
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{
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switch (size)
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{
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case IntegerSize.U8:
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case IntegerSize.S8:
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value = context.BitwiseAnd(value, Const(0xff));
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value = context.BitfieldInsert(word, value, bitOffset, Const(8));
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break;
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case IntegerSize.U16:
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case IntegerSize.S16:
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value = context.BitwiseAnd(value, Const(0xffff));
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value = context.BitfieldInsert(word, value, bitOffset, Const(16));
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break;
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}
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return value;
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}
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}
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} |