diff options
Diffstat (limited to 'Ryujinx.Graphics/Shader/CodeGen/Glsl/Instructions/InstGenHelper.cs')
| -rw-r--r-- | Ryujinx.Graphics/Shader/CodeGen/Glsl/Instructions/InstGenHelper.cs | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/Ryujinx.Graphics/Shader/CodeGen/Glsl/Instructions/InstGenHelper.cs b/Ryujinx.Graphics/Shader/CodeGen/Glsl/Instructions/InstGenHelper.cs new file mode 100644 index 00000000..0b860072 --- /dev/null +++ b/Ryujinx.Graphics/Shader/CodeGen/Glsl/Instructions/InstGenHelper.cs @@ -0,0 +1,170 @@ +using Ryujinx.Graphics.Shader.IntermediateRepresentation; +using Ryujinx.Graphics.Shader.StructuredIr; + +using static Ryujinx.Graphics.Shader.CodeGen.Glsl.TypeConversion; + +namespace Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions +{ + static class InstGenHelper + { + private static InstInfo[] _infoTbl; + + static InstGenHelper() + { + _infoTbl = new InstInfo[(int)Instruction.Count]; + + Add(Instruction.Absolute, InstType.CallUnary, "abs"); + Add(Instruction.Add, InstType.OpBinaryCom, "+", 2); + 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.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.ConvertFPToS32, InstType.CallUnary, "int"); + Add(Instruction.ConvertS32ToFP, InstType.CallUnary, "float"); + Add(Instruction.ConvertU32ToFP, InstType.CallUnary, "float"); + Add(Instruction.Cosine, InstType.CallUnary, "cos"); + 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.Floor, InstType.CallUnary, "floor"); + Add(Instruction.FusedMultiplyAdd, InstType.CallTernary, "fma"); + Add(Instruction.IsNan, InstType.CallUnary, "isnan"); + Add(Instruction.LoadConstant, 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.PackHalf2x16, InstType.Special); + Add(Instruction.ShiftLeft, InstType.OpBinary, "<<", 3); + Add(Instruction.ShiftRightS32, InstType.OpBinary, ">>", 3); + Add(Instruction.ShiftRightU32, InstType.OpBinary, ">>", 3); + Add(Instruction.Maximum, InstType.CallBinary, "max"); + Add(Instruction.MaximumU32, InstType.CallBinary, "max"); + Add(Instruction.Minimum, InstType.CallBinary, "min"); + Add(Instruction.MinimumU32, InstType.CallBinary, "min"); + Add(Instruction.Multiply, InstType.OpBinaryCom, "*", 1); + Add(Instruction.Negate, InstType.OpUnary, "-", 0); + Add(Instruction.ReciprocalSquareRoot, InstType.CallUnary, "inversesqrt"); + Add(Instruction.Return, InstType.OpNullary, "return"); + Add(Instruction.Sine, InstType.CallUnary, "sin"); + Add(Instruction.SquareRoot, InstType.CallUnary, "sqrt"); + Add(Instruction.Subtract, InstType.OpBinary, "-", 2); + Add(Instruction.TextureSample, InstType.Special); + Add(Instruction.TextureSize, InstType.Special); + Add(Instruction.Truncate, InstType.CallUnary, "trunc"); + Add(Instruction.UnpackHalf2x16, InstType.Special); + } + + private static void Add(Instruction inst, InstType flags, string opName = null, int precedence = 0) + { + _infoTbl[(int)inst] = new InstInfo(flags, opName, precedence); + } + + public static InstInfo GetInstructionInfo(Instruction inst) + { + return _infoTbl[(int)(inst & Instruction.Mask)]; + } + + public static string GetSoureExpr(CodeGenContext context, IAstNode node, VariableType dstType) + { + return ReinterpretCast(context, node, OperandManager.GetNodeDestType(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 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 = _infoTbl[(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 AstOperand operand)) + { + return false; + } + + return operand.Type == OperandType.Constant && operand.Value < 0; + } + } +}
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