mirror of
https://github.com/GreemDev/Ryujinx.git
synced 2024-12-21 06:15:54 +01:00
170 lines
9.0 KiB
C#
170 lines
9.0 KiB
C#
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using Ryujinx.Graphics.Shader.IntermediateRepresentation;
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using Ryujinx.Graphics.Shader.StructuredIr;
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using static Ryujinx.Graphics.Shader.CodeGen.Glsl.TypeConversion;
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namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions
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{
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static class InstGenHelper
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{
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private static InstInfo[] _infoTbl;
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static InstGenHelper()
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{
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_infoTbl = new InstInfo[(int)Instruction.Count];
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Add(Instruction.Absolute, InstType.CallUnary, "abs");
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Add(Instruction.Add, InstType.OpBinaryCom, "+", 2);
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Add(Instruction.BitfieldExtractS32, InstType.CallTernary, "bitfieldExtract");
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Add(Instruction.BitfieldExtractU32, InstType.CallTernary, "bitfieldExtract");
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Add(Instruction.BitfieldInsert, InstType.CallQuaternary, "bitfieldInsert");
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Add(Instruction.BitfieldReverse, InstType.CallUnary, "bitfieldReverse");
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Add(Instruction.BitwiseAnd, InstType.OpBinaryCom, "&", 6);
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Add(Instruction.BitwiseExclusiveOr, InstType.OpBinaryCom, "^", 7);
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Add(Instruction.BitwiseNot, InstType.OpUnary, "~", 0);
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Add(Instruction.BitwiseOr, InstType.OpBinaryCom, "|", 8);
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Add(Instruction.Ceiling, InstType.CallUnary, "ceil");
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Add(Instruction.Clamp, InstType.CallTernary, "clamp");
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Add(Instruction.ClampU32, InstType.CallTernary, "clamp");
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Add(Instruction.CompareEqual, InstType.OpBinaryCom, "==", 5);
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Add(Instruction.CompareGreater, InstType.OpBinary, ">", 4);
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Add(Instruction.CompareGreaterOrEqual, InstType.OpBinary, ">=", 4);
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Add(Instruction.CompareGreaterOrEqualU32, InstType.OpBinary, ">=", 4);
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Add(Instruction.CompareGreaterU32, InstType.OpBinary, ">", 4);
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Add(Instruction.CompareLess, InstType.OpBinary, "<", 4);
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Add(Instruction.CompareLessOrEqual, InstType.OpBinary, "<=", 4);
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Add(Instruction.CompareLessOrEqualU32, InstType.OpBinary, "<=", 4);
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Add(Instruction.CompareLessU32, InstType.OpBinary, "<", 4);
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Add(Instruction.CompareNotEqual, InstType.OpBinaryCom, "!=", 5);
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Add(Instruction.ConditionalSelect, InstType.OpTernary, "?:", 12);
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Add(Instruction.ConvertFPToS32, InstType.CallUnary, "int");
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Add(Instruction.ConvertS32ToFP, InstType.CallUnary, "float");
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Add(Instruction.ConvertU32ToFP, InstType.CallUnary, "float");
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Add(Instruction.Cosine, InstType.CallUnary, "cos");
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Add(Instruction.Discard, InstType.OpNullary, "discard");
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Add(Instruction.Divide, InstType.OpBinary, "/", 1);
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Add(Instruction.EmitVertex, InstType.CallNullary, "EmitVertex");
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Add(Instruction.EndPrimitive, InstType.CallNullary, "EndPrimitive");
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Add(Instruction.ExponentB2, InstType.CallUnary, "exp2");
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Add(Instruction.Floor, InstType.CallUnary, "floor");
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Add(Instruction.FusedMultiplyAdd, InstType.CallTernary, "fma");
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Add(Instruction.IsNan, InstType.CallUnary, "isnan");
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Add(Instruction.LoadConstant, InstType.Special);
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Add(Instruction.LogarithmB2, InstType.CallUnary, "log2");
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Add(Instruction.LogicalAnd, InstType.OpBinaryCom, "&&", 9);
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Add(Instruction.LogicalExclusiveOr, InstType.OpBinaryCom, "^^", 10);
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Add(Instruction.LogicalNot, InstType.OpUnary, "!", 0);
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Add(Instruction.LogicalOr, InstType.OpBinaryCom, "||", 11);
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Add(Instruction.LoopBreak, InstType.OpNullary, "break");
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Add(Instruction.LoopContinue, InstType.OpNullary, "continue");
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Add(Instruction.PackHalf2x16, InstType.Special);
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Add(Instruction.ShiftLeft, InstType.OpBinary, "<<", 3);
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Add(Instruction.ShiftRightS32, InstType.OpBinary, ">>", 3);
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Add(Instruction.ShiftRightU32, InstType.OpBinary, ">>", 3);
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Add(Instruction.Maximum, InstType.CallBinary, "max");
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Add(Instruction.MaximumU32, InstType.CallBinary, "max");
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Add(Instruction.Minimum, InstType.CallBinary, "min");
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Add(Instruction.MinimumU32, InstType.CallBinary, "min");
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Add(Instruction.Multiply, InstType.OpBinaryCom, "*", 1);
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Add(Instruction.Negate, InstType.OpUnary, "-", 0);
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Add(Instruction.ReciprocalSquareRoot, InstType.CallUnary, "inversesqrt");
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Add(Instruction.Return, InstType.OpNullary, "return");
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Add(Instruction.Sine, InstType.CallUnary, "sin");
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Add(Instruction.SquareRoot, InstType.CallUnary, "sqrt");
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Add(Instruction.Subtract, InstType.OpBinary, "-", 2);
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Add(Instruction.TextureSample, InstType.Special);
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Add(Instruction.TextureSize, InstType.Special);
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Add(Instruction.Truncate, InstType.CallUnary, "trunc");
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Add(Instruction.UnpackHalf2x16, InstType.Special);
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}
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private static void Add(Instruction inst, InstType flags, string opName = null, int precedence = 0)
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{
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_infoTbl[(int)inst] = new InstInfo(flags, opName, precedence);
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}
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public static InstInfo GetInstructionInfo(Instruction inst)
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{
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return _infoTbl[(int)(inst & Instruction.Mask)];
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}
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public static string GetSoureExpr(CodeGenContext context, IAstNode node, VariableType dstType)
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{
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return ReinterpretCast(context, node, OperandManager.GetNodeDestType(node), dstType);
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}
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public static string Enclose(string expr, IAstNode node, Instruction pInst, bool isLhs)
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{
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InstInfo pInfo = GetInstructionInfo(pInst);
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return Enclose(expr, node, pInst, pInfo, isLhs);
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}
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public static string Enclose(string expr, IAstNode node, Instruction pInst, InstInfo pInfo, bool isLhs = false)
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{
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if (NeedsParenthesis(node, pInst, pInfo, isLhs))
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{
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expr = "(" + expr + ")";
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}
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return expr;
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}
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public static bool NeedsParenthesis(IAstNode node, Instruction pInst, InstInfo pInfo, bool isLhs)
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{
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//If the node isn't a operation, then it can only be a operand,
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//and those never needs to be surrounded in parenthesis.
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if (!(node is AstOperation operation))
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{
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//This is sort of a special case, if this is a negative constant,
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//and it is consumed by a unary operation, we need to put on the parenthesis,
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//as in GLSL a sequence like --2 or ~-1 is not valid.
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if (IsNegativeConst(node) && pInfo.Type == InstType.OpUnary)
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{
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return true;
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}
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return false;
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}
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if ((pInfo.Type & (InstType.Call | InstType.Special)) != 0)
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{
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return false;
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}
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InstInfo info = _infoTbl[(int)(operation.Inst & Instruction.Mask)];
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if ((info.Type & (InstType.Call | InstType.Special)) != 0)
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{
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return false;
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}
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if (info.Precedence < pInfo.Precedence)
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{
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return false;
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}
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if (info.Precedence == pInfo.Precedence && isLhs)
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{
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return false;
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}
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if (pInst == operation.Inst && info.Type == InstType.OpBinaryCom)
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{
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return false;
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}
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return true;
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}
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private static bool IsNegativeConst(IAstNode node)
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{
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if (!(node is AstOperand operand))
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{
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return false;
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}
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return operand.Type == OperandType.Constant && operand.Value < 0;
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}
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}
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}
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