Could you try to create a minimal reproduction case and submit a fogbugz case and reply here with the case number, It looks like you are using/referencing a type from the FoundationContract namespace (or at least burst thinks you are) in burst code. I would like to fix the error message here, because it should be possible to give you a location (or at least a callstack) of where the type usage is coming from I think.
So, we made a fix for that one… to discover that it is an IL construction pattern generated by Roslyn that seems also not supported by Mono at runtime. Could you double check if running the failing Job without Burst is actually working?, as Mono should just crash with a Mono IL Invalid opcode…
FYI we released a new version of burst 1.2.0-preview.11 with the following bug fixes:
• Fix issue ldflda opcode when the input on the stack is a value and not a pointer. (Should fix issue 1203900 @5argon , note that Mono has a similar bug and the same method in Mono will just crash - being tracked here, that means that if you turn off Burst on this Job, Mono should also crash on it)
• Add mechanism to trigger recompilation of jobs and function pointers (This is triggered for example when changing the enable/disable safety checks in the job menu for already compiled job/function pointers)
• Fix issue with a TypeLoadException related when trying to load PDB.
• Fix issue for UWP to avoid an AssemblyResolutionException for types within Windows.* WinMd assemblies. ( @harschell this should fix the UWP issue)
Unless we found a critical issue on this release, this should be our last release for this year and will hopefully be able to release a stable 1.2 version early in January.
4 Likes
After updating, I can see Burst assembly visible for this job now after removed WithoutBurst. Unfortunately I cannot confirm if its behaviour is correct or not because in this same job that I got invalid IL code IL_02c3: stfld, which is related to Entities IL gen and not Burst. This one is not fixed yet on the latest Entities package.
Small question for the “SharedStatic” struct. How does reading/writing that static data affect jobs? Are there gonna be compilation errors if I’m writing to it from a job context ? Or would the job execute only on the main thread ? Or something else ?
hi,Will FloatMode.Deterministic be used in burst 1.3?
Is it expected that IEquatable or any other interface implemented explicitly (bool IEquatable<T>.Equals(... instead of public bool Equals(...) could not be resolved by Burst? I like explicit implementation because IDE works with them better on refactoring and documentation.
Related, does all ECB command enqueue supposed to be burstable by now? If that is so then ecb.SetSharedComponent is still incomplete for the same related reason. It seems type manager wants to do Equals, but cannot detect that my SCD contains no managed field and it fall back to C# engine ones and that is considered a managed method.
I want to try get around it by implementing IEquatable implicitly (if explicitly, same error) on all my SCD, so maybe that make SCD command burstable. However I then get a new error :
- Yes, my SCD is a value type.
- It implies that ecb.SetSharedComponent “wants” to box a value type to managed object but the user just want to enqueue SCB command that is burstable. If this is not allowed, the error should say more directly about it. Or provide a way to tag (attribute?) my SCD that it contains only simple variable types and something like NativeString64, then make only this case burstable.
2 Likes
I’m having this weird error building Standalone OSX (from Mac machine) with Burst 1.2.0 preview.11.
I get no error on Windows standalone build (from Windows machine)
I’m using Unity 2020.1.0a16 with Entities 0.3.0.
I can’t make any sense out of this error 
Error
(0,0): Burst error BC0101: Unexpected error while processing function System.Action.Invoke(System.Action* this)_92B6B07F97881533: System.InvalidOperationException: Unexpected register class in FindLayout at 0: NoClass
at Burst.Compiler.IL.SystemV64ABI.FindLayout (Burst.Compiler.IL.SystemV64ABI+Class[ ] cls, System.Int32& offset, System.Int32 size) [0x00082] in <3d70f809f392451a9e38185e7724e26c>:0
at Burst.Compiler.IL.SystemV64ABI.CastTarget (Burst.Compiler.IL.SystemV64ABI+Class[ ] cls, System.Int32 size) [0x00002] in <3d70f809f392451a9e38185e7724e26c>:0
at Burst.Compiler.IL.SystemV64ABI.FixupImpl (Burst.Compiler.IL.ABIFixupContext context, Burst.Compiler.IL.LogMessageWithSourceLocationDelegate logMessage) [0x00114] in <3d70f809f392451a9e38185e7724e26c>:0
at Burst.Compiler.IL.ABITarget.Fixup (Burst.Compiler.IL.ABIFixupContext context, Burst.Compiler.IL.LogMessageWithSourceLocationDelegate logMessage) [0x000b9] in <3d70f809f392451a9e38185e7724e26c>:0
at Burst.Compiler.IL.ABITarget.MakeABICompliant (Burst.Compiler.IL.Syntax.ILFunctionReference binding, Burst.Compiler.IL.ILCompiler ilCompiler, Mono.Cecil.TypeSystem typeSystem) [0x00181] in <3d70f809f392451a9e38185e7724e26c>:0
at Burst.Compiler.IL.Transforms.ABITransform.MakeABICompliant (Burst.Compiler.IL.Syntax.ILFunctionReference funcRef, Burst.Compiler.IL.ABITarget target) [0x00073] in <3d70f809f392451a9e38185e7724e26c>:0
at Burst.Compiler.IL.Transforms.ABITransform.ABIVisitFunctionSignature (Burst.Compiler.IL.Syntax.ILFunction function) [0x0002a] in <3d70f809f392451a9e38185e7724e26c>:0
at Burst.Compiler.IL.Transforms.ABITransform.VisitImpl (Burst.Compiler.IL.Syntax.ILFunction function) [0x00000] in <3d70f809f392451a9e38185e7724e26c>:0
at Burst.Compiler.IL.ILVisitor.Visit (Burst.Compiler.IL.Syntax.ILFunction ilFunction) [0x00007] in <3d70f809f392451a9e38185e7724e26c>:0
EDIT:
Same problem when building OSX Standalone with Unity 2019.3.0f3 (from Mac)
Explicit interface implementation are not supported today by Burst. They are actually generating a box instruction and we are not currently recovering from that case. Use normal implementation as a workaround.
Afaik, SetSharedComponent is not supported by Burst. This underlying method EntityCommandBuffer.AddEntitySharedComponentCommand takes an object as a parameter which is definitely not possible in burst.
Could you log an issue through Unity bug report so that we can repro it?
I was able to track down what causes the error and it’s due to using Burst Function pointers.
Just having this job in the project is enough to trigger the error when building in Mac → Mac
[BurstCompile]
public struct ActionJob : IJob {
public static JobHandle Schedule(Action action, JobHandle inputDeps) {
return new ActionJob {
Action = new FunctionPointer<Action>(Marshal.GetFunctionPointerForDelegate(action))
}.Schedule(inputDeps);
}
FunctionPointer<Action> Action;
public void Execute() {
Action.Invoke();
}
}
Should I submit the bug anyway or this is enough?
That should be enough, thank you!
We fixed this issue and will be part of the next preview.12 (not sure we will release one before the end of this year though). I haven’t double checked but I believe a temp workaround could be to add a dummy parameter to the delegate (e.g int) to let it pass.
1 Like
I’ve finally found out what is crashing BCTool.exe
Function : GradientCoherentNoise
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
[Unity.Burst.BurstCompile(CompileSynchronously = true)]
public class CrashClass
{
internal const int XNoiseGen = 1619;
internal const int YNoiseGen = 31337;
internal const int ZNoiseGen = 6971;
internal const int SeedNoiseGen = 1013;
internal const int ShiftNoiseGen = 8;
static public readonly double[] RandomVectors =
{
-0.763874, -0.596439, -0.246489, 0.0,
0.396055, 0.904518, -0.158073, 0.0,
-0.499004, -0.8665, -0.0131631, 0.0,
0.468724, -0.824756, 0.316346, 0.0,
0.829598, 0.43195, 0.353816, 0.0,
-0.454473, 0.629497, -0.630228, 0.0,
-0.162349, -0.869962, -0.465628, 0.0,
0.932805, 0.253451, 0.256198, 0.0,
-0.345419, 0.927299, -0.144227, 0.0,
-0.715026, -0.293698, -0.634413, 0.0,
-0.245997, 0.717467, -0.651711, 0.0,
-0.967409, -0.250435, -0.037451, 0.0,
0.901729, 0.397108, -0.170852, 0.0,
0.892657, -0.0720622, -0.444938, 0.0,
0.0260084, -0.0361701, 0.999007, 0.0,
0.949107, -0.19486, 0.247439, 0.0,
0.471803, -0.807064, -0.355036, 0.0,
0.879737, 0.141845, 0.453809, 0.0,
0.570747, 0.696415, 0.435033, 0.0,
-0.141751, -0.988233, -0.0574584, 0.0,
-0.58219, -0.0303005, 0.812488, 0.0,
-0.60922, 0.239482, -0.755975, 0.0,
0.299394, -0.197066, -0.933557, 0.0,
-0.851615, -0.220702, -0.47544, 0.0,
0.848886, 0.341829, -0.403169, 0.0,
-0.156129, -0.687241, 0.709453, 0.0,
-0.665651, 0.626724, 0.405124, 0.0,
0.595914, -0.674582, 0.43569, 0.0,
0.171025, -0.509292, 0.843428, 0.0,
0.78605, 0.536414, -0.307222, 0.0,
0.18905, -0.791613, 0.581042, 0.0,
-0.294916, 0.844994, 0.446105, 0.0,
0.342031, -0.58736, -0.7335, 0.0,
0.57155, 0.7869, 0.232635, 0.0,
0.885026, -0.408223, 0.223791, 0.0,
-0.789518, 0.571645, 0.223347, 0.0,
0.774571, 0.31566, 0.548087, 0.0,
-0.79695, -0.0433603, -0.602487, 0.0,
-0.142425, -0.473249, -0.869339, 0.0,
-0.0698838, 0.170442, 0.982886, 0.0,
0.687815, -0.484748, 0.540306, 0.0,
0.543703, -0.534446, -0.647112, 0.0,
0.97186, 0.184391, -0.146588, 0.0,
0.707084, 0.485713, -0.513921, 0.0,
0.942302, 0.331945, 0.043348, 0.0,
0.499084, 0.599922, 0.625307, 0.0,
-0.289203, 0.211107, 0.9337, 0.0,
0.412433, -0.71667, -0.56239, 0.0,
0.87721, -0.082816, 0.47291, 0.0,
-0.420685, -0.214278, 0.881538, 0.0,
0.752558, -0.0391579, 0.657361, 0.0,
0.0765725, -0.996789, 0.0234082, 0.0,
-0.544312, -0.309435, -0.779727, 0.0,
-0.455358, -0.415572, 0.787368, 0.0,
-0.874586, 0.483746, 0.0330131, 0.0,
0.245172, -0.0838623, 0.965846, 0.0,
0.382293, -0.432813, 0.81641, 0.0,
-0.287735, -0.905514, 0.311853, 0.0,
-0.667704, 0.704955, -0.239186, 0.0,
0.717885, -0.464002, -0.518983, 0.0,
0.976342, -0.214895, 0.0240053, 0.0,
-0.0733096, -0.921136, 0.382276, 0.0,
-0.986284, 0.151224, -0.0661379, 0.0,
-0.899319, -0.429671, 0.0812908, 0.0,
0.652102, -0.724625, 0.222893, 0.0,
0.203761, 0.458023, -0.865272, 0.0,
-0.030396, 0.698724, -0.714745, 0.0,
-0.460232, 0.839138, 0.289887, 0.0,
-0.0898602, 0.837894, 0.538386, 0.0,
-0.731595, 0.0793784, 0.677102, 0.0,
-0.447236, -0.788397, 0.422386, 0.0,
0.186481, 0.645855, -0.740335, 0.0,
-0.259006, 0.935463, 0.240467, 0.0,
0.445839, 0.819655, -0.359712, 0.0,
0.349962, 0.755022, -0.554499, 0.0,
-0.997078, -0.0359577, 0.0673977, 0.0,
-0.431163, -0.147516, -0.890133, 0.0,
0.299648, -0.63914, 0.708316, 0.0,
0.397043, 0.566526, -0.722084, 0.0,
-0.502489, 0.438308, -0.745246, 0.0,
0.0687235, 0.354097, 0.93268, 0.0,
-0.0476651, -0.462597, 0.885286, 0.0,
-0.221934, 0.900739, -0.373383, 0.0,
-0.956107, -0.225676, 0.186893, 0.0,
-0.187627, 0.391487, -0.900852, 0.0,
-0.224209, -0.315405, 0.92209, 0.0,
-0.730807, -0.537068, 0.421283, 0.0,
-0.0353135, -0.816748, 0.575913, 0.0,
-0.941391, 0.176991, -0.287153, 0.0,
-0.154174, 0.390458, 0.90762, 0.0,
-0.283847, 0.533842, 0.796519, 0.0,
-0.482737, -0.850448, 0.209052, 0.0,
-0.649175, 0.477748, 0.591886, 0.0,
0.885373, -0.405387, -0.227543, 0.0,
-0.147261, 0.181623, -0.972279, 0.0,
0.0959236, -0.115847, -0.988624, 0.0,
-0.89724, -0.191348, 0.397928, 0.0,
0.903553, -0.428461, -0.00350461, 0.0,
0.849072, -0.295807, -0.437693, 0.0,
0.65551, 0.741754, -0.141804, 0.0,
0.61598, -0.178669, 0.767232, 0.0,
0.0112967, 0.932256, -0.361623, 0.0,
-0.793031, 0.258012, 0.551845, 0.0,
0.421933, 0.454311, 0.784585, 0.0,
-0.319993, 0.0401618, -0.946568, 0.0,
-0.81571, 0.551307, -0.175151, 0.0,
-0.377644, 0.00322313, 0.925945, 0.0,
0.129759, -0.666581, -0.734052, 0.0,
0.601901, -0.654237, -0.457919, 0.0,
-0.927463, -0.0343576, -0.372334, 0.0,
-0.438663, -0.868301, -0.231578, 0.0,
-0.648845, -0.749138, -0.133387, 0.0,
0.507393, -0.588294, 0.629653, 0.0,
0.726958, 0.623665, 0.287358, 0.0,
0.411159, 0.367614, -0.834151, 0.0,
0.806333, 0.585117, -0.0864016, 0.0,
0.263935, -0.880876, 0.392932, 0.0,
0.421546, -0.201336, 0.884174, 0.0,
-0.683198, -0.569557, -0.456996, 0.0,
-0.117116, -0.0406654, -0.992285, 0.0,
-0.643679, -0.109196, -0.757465, 0.0,
-0.561559, -0.62989, 0.536554, 0.0,
0.0628422, 0.104677, -0.992519, 0.0,
0.480759, -0.2867, -0.828658, 0.0,
-0.228559, -0.228965, -0.946222, 0.0,
-0.10194, -0.65706, -0.746914, 0.0,
0.0689193, -0.678236, 0.731605, 0.0,
0.401019, -0.754026, 0.52022, 0.0,
-0.742141, 0.547083, -0.387203, 0.0,
-0.00210603, -0.796417, -0.604745, 0.0,
0.296725, -0.409909, -0.862513, 0.0,
-0.260932, -0.798201, 0.542945, 0.0,
-0.641628, 0.742379, 0.192838, 0.0,
-0.186009, -0.101514, 0.97729, 0.0,
0.106711, -0.962067, 0.251079, 0.0,
-0.743499, 0.30988, -0.592607, 0.0,
-0.795853, -0.605066, -0.0226607, 0.0,
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0.0847218, -0.489815, -0.8677, 0.0,
-0.381405, 0.788019, -0.483276, 0.0,
0.282042, -0.953394, 0.107205, 0.0,
0.530774, 0.847413, 0.0130696, 0.0,
0.0515397, 0.922524, 0.382484, 0.0,
-0.631467, -0.709046, 0.313852, 0.0,
0.688248, 0.517273, 0.508668, 0.0,
0.646689, -0.333782, -0.685845, 0.0,
-0.932528, -0.247532, -0.262906, 0.0,
0.630609, 0.68757, -0.359973, 0.0,
0.577805, -0.394189, 0.714673, 0.0,
-0.887833, -0.437301, -0.14325, 0.0,
0.690982, 0.174003, 0.701617, 0.0,
-0.866701, 0.0118182, 0.498689, 0.0,
-0.482876, 0.727143, 0.487949, 0.0,
-0.577567, 0.682593, -0.447752, 0.0,
0.373768, 0.0982991, 0.922299, 0.0,
0.170744, 0.964243, -0.202687, 0.0,
0.993654, -0.035791, -0.106632, 0.0,
0.587065, 0.4143, -0.695493, 0.0,
-0.396509, 0.26509, -0.878924, 0.0,
-0.0866853, 0.83553, -0.542563, 0.0,
0.923193, 0.133398, -0.360443, 0.0,
0.00379108, -0.258618, 0.965972, 0.0,
0.239144, 0.245154, -0.939526, 0.0,
0.758731, -0.555871, 0.33961, 0.0,
0.295355, 0.309513, 0.903862, 0.0,
0.0531222, -0.91003, -0.411124, 0.0,
0.270452, 0.0229439, -0.96246, 0.0,
0.563634, 0.0324352, 0.825387, 0.0,
0.156326, 0.147392, 0.976646, 0.0,
-0.0410141, 0.981824, 0.185309, 0.0,
-0.385562, -0.576343, -0.720535, 0.0,
0.388281, 0.904441, 0.176702, 0.0,
0.945561, -0.192859, -0.262146, 0.0,
0.844504, 0.520193, 0.127325, 0.0,
0.0330893, 0.999121, -0.0257505, 0.0,
-0.592616, -0.482475, -0.644999, 0.0,
0.539471, 0.631024, -0.557476, 0.0,
0.655851, -0.027319, -0.754396, 0.0,
0.274465, 0.887659, 0.369772, 0.0,
-0.123419, 0.975177, -0.183842, 0.0,
-0.223429, 0.708045, 0.66989, 0.0,
-0.908654, 0.196302, 0.368528, 0.0,
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0.960535, 0.030592, 0.276472, 0.0,
-0.413146, 0.907537, 0.0754161, 0.0,
-0.847992, 0.350849, -0.397259, 0.0,
0.614736, 0.395841, 0.68221, 0.0,
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-0.268833, -0.738524, -0.618314, 0.0,
0.792737, -0.60001, -0.107502, 0.0,
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0.750105, 0.282165, -0.598101, 0.0,
-0.351199, -0.392294, -0.850155, 0.0,
0.250126, -0.960993, -0.118025, 0.0,
-0.732341, 0.680909, -0.0063274, 0.0,
-0.760674, -0.141009, 0.633634, 0.0,
0.222823, -0.304012, 0.926243, 0.0,
0.209178, 0.505671, 0.836984, 0.0,
0.757914, -0.56629, -0.323857, 0.0,
-0.782926, -0.339196, 0.52151, 0.0,
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0.61879, 0.194119, -0.761194, 0.0,
0.741388, -0.276743, 0.611357, 0.0,
0.707571, 0.702621, 0.0752872, 0.0,
0.156562, 0.819977, 0.550569, 0.0,
-0.793606, 0.440216, 0.42, 0.0,
0.234547, 0.885309, -0.401517, 0.0,
0.132598, 0.80115, -0.58359, 0.0,
-0.377899, -0.639179, 0.669808, 0.0,
-0.865993, -0.396465, 0.304748, 0.0,
-0.624815, -0.44283, 0.643046, 0.0,
-0.485705, 0.825614, -0.287146, 0.0,
-0.971788, 0.175535, 0.157529, 0.0,
-0.456027, 0.392629, 0.798675, 0.0,
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-0.660575, -0.74519, 0.091282, 0.0,
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-0.603467, -0.250192, 0.757121, 0.0,
0.506876, 0.25006, 0.824952, 0.0,
0.255404, 0.966794, 0.00884498, 0.0,
0.466764, -0.874228, -0.133625, 0.0,
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-0.224967, -0.938972, -0.260233, 0.0,
-0.377929, -0.814757, -0.439705, 0.0,
-0.305847, 0.542333, -0.782517, 0.0,
0.26658, -0.902905, -0.337191, 0.0,
0.0275773, 0.322158, -0.946284, 0.0,
0.0185422, 0.716349, 0.697496, 0.0,
-0.20483, 0.978416, 0.0273371, 0.0,
-0.898276, 0.373969, 0.230752, 0.0,
-0.00909378, 0.546594, 0.837349, 0.0,
0.6602, -0.751089, 0.000959236, 0.0,
0.855301, -0.303056, 0.420259, 0.0,
0.797138, 0.0623013, -0.600574, 0.0,
0.48947, -0.866813, 0.0951509, 0.0,
0.251142, 0.674531, 0.694216, 0.0,
-0.578422, -0.737373, -0.348867, 0.0,
-0.254689, -0.514807, 0.818601, 0.0,
0.374972, 0.761612, 0.528529, 0.0,
0.640303, -0.734271, -0.225517, 0.0,
-0.638076, 0.285527, 0.715075, 0.0,
0.772956, -0.15984, -0.613995, 0.0,
0.798217, -0.590628, 0.118356, 0.0,
-0.986276, -0.0578337, -0.154644, 0.0,
-0.312988, -0.94549, 0.0899272, 0.0,
-0.497338, 0.178325, 0.849032, 0.0,
-0.101136, -0.981014, 0.165477, 0.0,
-0.521688, 0.0553434, -0.851339, 0.0,
-0.786182, -0.583814, 0.202678, 0.0,
-0.565191, 0.821858, -0.0714658, 0.0,
0.437895, 0.152598, -0.885981, 0.0,
-0.92394, 0.353436, -0.14635, 0.0,
0.212189, -0.815162, -0.538969, 0.0,
-0.859262, 0.143405, -0.491024, 0.0,
0.991353, 0.112814, 0.0670273, 0.0,
0.0337884, -0.979891, -0.196654, 0.0
};
[Unity.Burst.BurstCompile(CompileSynchronously = true, Debug = false)]
static public double GradientCoherentNoise(double nx, double nz, int seed)
{
int x0 = (nx > 0.0 ? (int)nx : (int)nx - 1);
int x1 = x0 + 1;
int z0 = (nz > 0.0 ? (int)nz : (int)nz - 1);
int z1 = z0 + 1;
double xs = 0, zs = 0;
double ix1 = 0, iy0 = 0, n0 = 0, n1 = 0;
long vectorIndex;
//n0 = GradientNoise(x, z, x0, z0, seed);
vectorIndex = (XNoiseGen * x0 + ZNoiseGen * z0 + SeedNoiseGen * seed) & 0xffffffff;
vectorIndex ^= (vectorIndex >> ShiftNoiseGen);
vectorIndex &= 0xff;
n0 = ((RandomVectors[(vectorIndex << 2)] * (nx - x0)) + (RandomVectors[(vectorIndex << 2) + 2] * (nz - z0))) * 2.12;
//n1 = GradientNoise(x, z, x1, z0, seed);
vectorIndex = (XNoiseGen * x1 + ZNoiseGen * z0 + SeedNoiseGen * seed) & 0xffffffff;
vectorIndex ^= (vectorIndex >> ShiftNoiseGen);
vectorIndex &= 0xff;
n1 = ((RandomVectors[(vectorIndex << 2)] * (nx - x1)) + (RandomVectors[(vectorIndex << 2) + 2] * (nz - z0))) * 2.12;
//iy0 = LinearInterpolate(n0, n1, xs);
iy0 = ((1.0 - xs) * n0) + (xs * n1);
//n0 = GradientNoise(x, z, x0, z1, seed);
vectorIndex = (XNoiseGen * x0 + ZNoiseGen * z1 + SeedNoiseGen * seed) & 0xffffffff;
vectorIndex ^= (vectorIndex >> ShiftNoiseGen);
vectorIndex &= 0xff;
n0 = ((RandomVectors[(vectorIndex << 2)] * (nx - x0)) + (RandomVectors[(vectorIndex << 2) + 2] * (nz - z1))) * 2.12;
//n1 = GradientNoise(x, z, x1, z1, seed);
vectorIndex = (XNoiseGen * x1 + ZNoiseGen * z1 + SeedNoiseGen * seed) & 0xffffffff;
vectorIndex ^= (vectorIndex >> ShiftNoiseGen);
vectorIndex &= 0xff;
n1 = ((RandomVectors[(vectorIndex << 2)] * (nx - x1)) + (RandomVectors[(vectorIndex << 2) + 2] * (nz - z1))) * 2.12;
//ix1 = LinearInterpolate(n0, n1, xs);
ix1 = ((1.0 - xs) * n0) + (xs * n1);
//return LinearInterpolate(iy0, ix1, zs);
return ((1.0 - zs) * iy0) + (zs * ix1);
}
}
Accessing from any burst code to RandomVectors is causing a compiler crash.
That works but just the use of a custom delegate instead of system’s Action fixed the issue.
public delegate void MyAction();
Hey @xoofx , really like the new function pointer stuff - it looks like it’s going to be really useful!
I’m trying to move a lot of our more mundane code to Burst and in particular I’m trying to make a native version of the map function or native arrays. A sketch is:
using System;
using Unity.Burst;
using Unity.Collections;
using Unity.Jobs;
namespace Geometry.NativeFunctionalMethods
{
[BurstCompile]
public struct NativeFunctionalMapJob<T, U> : IJobParallelFor where U : struct
where T : struct
{
[ReadOnly]
private NativeArray<T> input;
[WriteOnly]
private NativeArray<U> output;
private FunctionPointer<Func<T, U>> mapper;
public NativeFunctionalMapJob(NativeArray<T> input, NativeArray<U> output, FunctionPointer<Func<T, U>> mapper)
{
this.input = input;
this.output = output;
this.mapper = mapper;
}
public void Execute(int index)
{
mapper.Invoke(input[index]);
}
}
}
But unfortunately this doesn’t work because when I try to compile a function pointer to pass into this i.e.
FunctionPointer<Func<int, int>> doubleFunctionPointer = BurstCompiler.CompileFunctionPointer<Func<int, int>>(a => 2 * a);
I get an ArgumentException because “The specified Type must not be a generic type definition”. I’ve tried messing around with making the FunctionPointer above a generic i.e. FunctionPointer<V> where V: class but this also doesn’t work because then FunctionPointer<V>.Invoke isn’t callable.
Is there anyway around this, or are there plans to add support for generic FunctionPointers in future?
Thanks,
Cameron
I think the generic pointer is a .Net limitation rather than burst. I remember trying something like that in the past but not sure if it was the same problem you are facing.
i believe i find a burst bug but i can’t reproduce it. it cause data layout broken issue.
for example, i have an enum:
enum EnumField { a, b, c}
then i have a struct:
struct A : IComponentData {
public EnumField e;
}
in my code i set A to EnumField.b in code,
but i actually got EnumField.a in runtime!
i can’t identify my code’s issue, because it’s so simple, i restart my unity in desperate, then everything goes fine, so i can’t reproduce this weird issue, intuition tells me it’s related to burst. (i often use Debug in bursted-code and ignore the managed string warning, i guess long time dev would break memery layout somehow?)
if i’m right, this may relates to some terrible hidden bug.
WebGL when…? :3c
Are there any plans to update Animation Rigging package to the new Burst compiler version. Currently, the dependency is set to 1.1.1 and building with higher versions of Burst produce various errors.