1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
using Ryujinx.Graphics.Shader.CodeGen.Glsl.Instructions;
using Ryujinx.Graphics.Shader.IntermediateRepresentation;
using Ryujinx.Graphics.Shader.StructuredIr;
using Ryujinx.Graphics.Shader.Translation;
using System;
namespace Ryujinx.Graphics.Shader.CodeGen.Glsl
{
static class TypeConversion
{
public static string ReinterpretCast(
CodeGenContext context,
IAstNode node,
AggregateType srcType,
AggregateType dstType)
{
if (node is AstOperand operand && operand.Type == OperandType.Constant)
{
if (NumberFormatter.TryFormat(operand.Value, dstType, out string formatted))
{
return formatted;
}
}
string expr = InstGen.GetExpression(context, node);
return ReinterpretCast(expr, node, srcType, dstType);
}
private static string ReinterpretCast(string expr, IAstNode node, AggregateType srcType, AggregateType dstType)
{
if (srcType == dstType)
{
return expr;
}
if (srcType == AggregateType.FP32)
{
switch (dstType)
{
case AggregateType.Bool: return $"(floatBitsToInt({expr}) != 0)";
case AggregateType.S32: return $"floatBitsToInt({expr})";
case AggregateType.U32: return $"floatBitsToUint({expr})";
}
}
else if (dstType == AggregateType.FP32)
{
switch (srcType)
{
case AggregateType.Bool: return $"intBitsToFloat({ReinterpretBoolToInt(expr, node, AggregateType.S32)})";
case AggregateType.S32: return $"intBitsToFloat({expr})";
case AggregateType.U32: return $"uintBitsToFloat({expr})";
}
}
else if (srcType == AggregateType.Bool)
{
return ReinterpretBoolToInt(expr, node, dstType);
}
else if (dstType == AggregateType.Bool)
{
expr = InstGenHelper.Enclose(expr, node, Instruction.CompareNotEqual, isLhs: true);
return $"({expr} != 0)";
}
else if (dstType == AggregateType.S32)
{
return $"int({expr})";
}
else if (dstType == AggregateType.U32)
{
return $"uint({expr})";
}
throw new ArgumentException($"Invalid reinterpret cast from \"{srcType}\" to \"{dstType}\".");
}
private static string ReinterpretBoolToInt(string expr, IAstNode node, AggregateType dstType)
{
string trueExpr = NumberFormatter.FormatInt(IrConsts.True, dstType);
string falseExpr = NumberFormatter.FormatInt(IrConsts.False, dstType);
expr = InstGenHelper.Enclose(expr, node, Instruction.ConditionalSelect, isLhs: false);
return $"({expr} ? {trueExpr} : {falseExpr})";
}
}
}
|
