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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.StructuredIr;
using Ryujinx.Graphics.Shader.Translation;
using static Ryujinx.Graphics.Shader.CodeGen.Glsl.TypeConversion;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
{
static class InstGenHelper
{
private static readonly InstInfo[] _infoTable;
static InstGenHelper()
{
_infoTable = new InstInfo[(int)Instruction.Count];
#pragma warning disable IDE0055 // Disable formatting
Add(Instruction.AtomicAdd, InstType.AtomicBinary, "atomicAdd");
Add(Instruction.AtomicAnd, InstType.AtomicBinary, "atomicAnd");
Add(Instruction.AtomicCompareAndSwap, InstType.AtomicTernary, "atomicCompSwap");
Add(Instruction.AtomicMaxU32, InstType.AtomicBinary, "atomicMax");
Add(Instruction.AtomicMinU32, InstType.AtomicBinary, "atomicMin");
Add(Instruction.AtomicOr, InstType.AtomicBinary, "atomicOr");
Add(Instruction.AtomicSwap, InstType.AtomicBinary, "atomicExchange");
Add(Instruction.AtomicXor, InstType.AtomicBinary, "atomicXor");
Add(Instruction.Absolute, InstType.CallUnary, "abs");
Add(Instruction.Add, InstType.OpBinaryCom, "+", 2);
Add(Instruction.Ballot, InstType.Special);
Add(Instruction.Barrier, InstType.CallNullary, "barrier");
Add(Instruction.BitCount, InstType.CallUnary, "bitCount");
Add(Instruction.BitfieldExtractS32, InstType.CallTernary, "bitfieldExtract");
Add(Instruction.BitfieldExtractU32, InstType.CallTernary, "bitfieldExtract");
Add(Instruction.BitfieldInsert, InstType.CallQuaternary, "bitfieldInsert");
Add(Instruction.BitfieldReverse, InstType.CallUnary, "bitfieldReverse");
Add(Instruction.BitwiseAnd, InstType.OpBinaryCom, "&", 6);
Add(Instruction.BitwiseExclusiveOr, InstType.OpBinaryCom, "^", 7);
Add(Instruction.BitwiseNot, InstType.OpUnary, "~", 0);
Add(Instruction.BitwiseOr, InstType.OpBinaryCom, "|", 8);
Add(Instruction.Call, InstType.Special);
Add(Instruction.Ceiling, InstType.CallUnary, "ceil");
Add(Instruction.Clamp, InstType.CallTernary, "clamp");
Add(Instruction.ClampU32, InstType.CallTernary, "clamp");
Add(Instruction.CompareEqual, InstType.OpBinaryCom, "==", 5);
Add(Instruction.CompareGreater, InstType.OpBinary, ">", 4);
Add(Instruction.CompareGreaterOrEqual, InstType.OpBinary, ">=", 4);
Add(Instruction.CompareGreaterOrEqualU32, InstType.OpBinary, ">=", 4);
Add(Instruction.CompareGreaterU32, InstType.OpBinary, ">", 4);
Add(Instruction.CompareLess, InstType.OpBinary, "<", 4);
Add(Instruction.CompareLessOrEqual, InstType.OpBinary, "<=", 4);
Add(Instruction.CompareLessOrEqualU32, InstType.OpBinary, "<=", 4);
Add(Instruction.CompareLessU32, InstType.OpBinary, "<", 4);
Add(Instruction.CompareNotEqual, InstType.OpBinaryCom, "!=", 5);
Add(Instruction.ConditionalSelect, InstType.OpTernary, "?:", 12);
Add(Instruction.ConvertFP32ToFP64, InstType.CallUnary, "double");
Add(Instruction.ConvertFP64ToFP32, InstType.CallUnary, "float");
Add(Instruction.ConvertFP32ToS32, InstType.CallUnary, "int");
Add(Instruction.ConvertFP32ToU32, InstType.CallUnary, "uint");
Add(Instruction.ConvertFP64ToS32, InstType.CallUnary, "int");
Add(Instruction.ConvertFP64ToU32, InstType.CallUnary, "uint");
Add(Instruction.ConvertS32ToFP32, InstType.CallUnary, "float");
Add(Instruction.ConvertS32ToFP64, InstType.CallUnary, "double");
Add(Instruction.ConvertU32ToFP32, InstType.CallUnary, "float");
Add(Instruction.ConvertU32ToFP64, InstType.CallUnary, "double");
Add(Instruction.Cosine, InstType.CallUnary, "cos");
Add(Instruction.Ddx, InstType.CallUnary, "dFdx");
Add(Instruction.Ddy, InstType.CallUnary, "dFdy");
Add(Instruction.Discard, InstType.OpNullary, "discard");
Add(Instruction.Divide, InstType.OpBinary, "/", 1);
Add(Instruction.EmitVertex, InstType.CallNullary, "EmitVertex");
Add(Instruction.EndPrimitive, InstType.CallNullary, "EndPrimitive");
Add(Instruction.ExponentB2, InstType.CallUnary, "exp2");
Add(Instruction.FSIBegin, InstType.Special);
Add(Instruction.FSIEnd, InstType.Special);
Add(Instruction.FindLSB, InstType.CallUnary, "findLSB");
Add(Instruction.FindMSBS32, InstType.CallUnary, "findMSB");
Add(Instruction.FindMSBU32, InstType.CallUnary, "findMSB");
Add(Instruction.Floor, InstType.CallUnary, "floor");
Add(Instruction.FusedMultiplyAdd, InstType.CallTernary, "fma");
Add(Instruction.GroupMemoryBarrier, InstType.CallNullary, "groupMemoryBarrier");
Add(Instruction.ImageLoad, InstType.Special);
Add(Instruction.ImageStore, InstType.Special);
Add(Instruction.ImageAtomic, InstType.Special);
Add(Instruction.IsNan, InstType.CallUnary, "isnan");
Add(Instruction.Load, InstType.Special);
Add(Instruction.Lod, InstType.Special);
Add(Instruction.LogarithmB2, InstType.CallUnary, "log2");
Add(Instruction.LogicalAnd, InstType.OpBinaryCom, "&&", 9);
Add(Instruction.LogicalExclusiveOr, InstType.OpBinaryCom, "^^", 10);
Add(Instruction.LogicalNot, InstType.OpUnary, "!", 0);
Add(Instruction.LogicalOr, InstType.OpBinaryCom, "||", 11);
Add(Instruction.LoopBreak, InstType.OpNullary, "break");
Add(Instruction.LoopContinue, InstType.OpNullary, "continue");
Add(Instruction.PackDouble2x32, InstType.Special);
Add(Instruction.PackHalf2x16, InstType.Special);
Add(Instruction.Maximum, InstType.CallBinary, "max");
Add(Instruction.MaximumU32, InstType.CallBinary, "max");
Add(Instruction.MemoryBarrier, InstType.CallNullary, "memoryBarrier");
Add(Instruction.Minimum, InstType.CallBinary, "min");
Add(Instruction.MinimumU32, InstType.CallBinary, "min");
Add(Instruction.Modulo, InstType.CallBinary, "mod");
Add(Instruction.Multiply, InstType.OpBinaryCom, "*", 1);
Add(Instruction.MultiplyHighS32, InstType.CallBinary, HelperFunctionNames.MultiplyHighS32);
Add(Instruction.MultiplyHighU32, InstType.CallBinary, HelperFunctionNames.MultiplyHighU32);
Add(Instruction.Negate, InstType.Special);
Add(Instruction.ReciprocalSquareRoot, InstType.CallUnary, "inversesqrt");
Add(Instruction.Return, InstType.OpNullary, "return");
Add(Instruction.Round, InstType.CallUnary, "roundEven");
Add(Instruction.ShiftLeft, InstType.OpBinary, "<<", 3);
Add(Instruction.ShiftRightS32, InstType.OpBinary, ">>", 3);
Add(Instruction.ShiftRightU32, InstType.OpBinary, ">>", 3);
Add(Instruction.Shuffle, InstType.Special);
Add(Instruction.ShuffleDown, InstType.CallBinary, "subgroupShuffleDown");
Add(Instruction.ShuffleUp, InstType.CallBinary, "subgroupShuffleUp");
Add(Instruction.ShuffleXor, InstType.CallBinary, "subgroupShuffleXor");
Add(Instruction.Sine, InstType.CallUnary, "sin");
Add(Instruction.SquareRoot, InstType.CallUnary, "sqrt");
Add(Instruction.Store, InstType.Special);
Add(Instruction.Subtract, InstType.OpBinary, "-", 2);
Add(Instruction.SwizzleAdd, InstType.CallTernary, HelperFunctionNames.SwizzleAdd);
Add(Instruction.TextureSample, InstType.Special);
Add(Instruction.TextureQuerySamples, InstType.Special);
Add(Instruction.TextureQuerySize, InstType.Special);
Add(Instruction.Truncate, InstType.CallUnary, "trunc");
Add(Instruction.UnpackDouble2x32, InstType.Special);
Add(Instruction.UnpackHalf2x16, InstType.Special);
Add(Instruction.VectorExtract, InstType.Special);
Add(Instruction.VoteAll, InstType.CallUnary, "allInvocationsARB");
Add(Instruction.VoteAllEqual, InstType.CallUnary, "allInvocationsEqualARB");
Add(Instruction.VoteAny, InstType.CallUnary, "anyInvocationARB");
#pragma warning restore IDE0055
}
private static void Add(Instruction inst, InstType flags, string opName = null, int precedence = 0)
{
_infoTable[(int)inst] = new InstInfo(flags, opName, precedence);
}
public static InstInfo GetInstructionInfo(Instruction inst)
{
return _infoTable[(int)(inst & Instruction.Mask)];
}
public static string GetSourceExpr(CodeGenContext context, IAstNode node, AggregateType dstType)
{
return ReinterpretCast(context, node, OperandManager.GetNodeDestType(context, node), dstType);
}
public static string Enclose(string expr, IAstNode node, Instruction pInst, bool isLhs)
{
InstInfo pInfo = GetInstructionInfo(pInst);
return Enclose(expr, node, pInst, pInfo, isLhs);
}
public static string Enclose(string expr, IAstNode node, Instruction pInst, InstInfo pInfo, bool isLhs = false)
{
if (NeedsParenthesis(node, pInst, pInfo, isLhs))
{
expr = "(" + expr + ")";
}
return expr;
}
public static bool NeedsParenthesis(IAstNode node, Instruction pInst, InstInfo pInfo, bool isLhs)
{
// If the node isn't a operation, then it can only be a operand,
// and those never needs to be surrounded in parenthesis.
if (node is not AstOperation operation)
{
// This is sort of a special case, if this is a negative constant,
// and it is consumed by a unary operation, we need to put on the parenthesis,
// as in GLSL a sequence like --2 or ~-1 is not valid.
if (IsNegativeConst(node) && pInfo.Type == InstType.OpUnary)
{
return true;
}
return false;
}
if ((pInfo.Type & (InstType.Call | InstType.Special)) != 0)
{
return false;
}
InstInfo info = _infoTable[(int)(operation.Inst & Instruction.Mask)];
if ((info.Type & (InstType.Call | InstType.Special)) != 0)
{
return false;
}
if (info.Precedence < pInfo.Precedence)
{
return false;
}
if (info.Precedence == pInfo.Precedence && isLhs)
{
return false;
}
if (pInst == operation.Inst && info.Type == InstType.OpBinaryCom)
{
return false;
}
return true;
}
private static bool IsNegativeConst(IAstNode node)
{
if (node is not AstOperand operand)
{
return false;
}
return operand.Type == OperandType.Constant && operand.Value < 0;
}
}
}
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