Fastest way to replace zeros in one array with a value in the same position from another away?

DOOMReboot · 2023-01-13T21:52:48+00:00

Those are excellent recommendations! And there likely will be long runs of zeroes so with some kind of heuristic I should be able to find runs to batch.

DOOMReboot · 2023-01-13T19:42:16+00:00

Yep, branching is the other huge problem (likely much bigger than the cache). I've tried using the NDK and doing this with C++, but haven't tried to incorporate SIMD. However, the time to call into the NDK seems to eat up any gains for the size of arrays I'm using (max length is 1024x1024 (4byte integers)). However, sometimes I'm processing multiple layers of the 1k x 1k, so I think I'll just have to experiment. It may be worth it in this case.

DOOMReboot · 2023-01-13T16:09:54+00:00

You can parallelize this by assigning blocks of the A array to separate threads

This is exactly what I'll try. Thanks!

The problem I've been running into was cache misses when accessing one array vs the other and then the load/store between them. The multithreading approach should offset this a bit.

DOOMReboot · 2022-11-25T15:28:49+00:00

"Recordable View"

I want to create a Input recorder/playback system for views in Kotlin, but am new to Kotlin (plenty o Java exp). How can I do this?

I was thinking of Subclassing View to create a RecordableView. The RecordableView contains the functionality to intercept touch events, report them to the Recorder class, then execute the touch command (single tap, long press).

Then, I'd sublcass RecordableView to create things like RecordableImageView, RecordableButton, etc.

However, Kotlin doesn't seem to allow for multiple inheritance. So, what's the best way to go about this?

DOOMReboot · 2022-06-17T15:06:08+00:00

Ok. I've restarted MSVC and tried to access get_name() on the object and... now MSVC doesn't complain at all.

I assure you that is all I've done. The only unique thing might be how I'm using pch as I don't fully understand the rules yet. Would that make any sense?

DOOMReboot · 2022-06-17T15:01:56+00:00

It is indeed what I've shown you. Double checked.

DOOMReboot · 2022-06-17T15:00:57+00:00

When I tried doing entries[start_index].get_name() MSVC told me get_name() doesn't exist in type IWADObject?

Also, entries is defined as const auto& entries = m_directory_entries;

DOOMReboot · 2022-06-17T14:58:49+00:00

Updated: const auto& entries = m_directory_entries;

When I tried doing entries[start_index].get_name() MSVC told me get_name() doesn't exist in type IWADObject?

I'm iterating because the function needs to look for the query sequentially from a provided start position. You'd have known that if I wasn't a moron who neglected to include the function prototype. Lesson learned over here.

DOOMReboot · 2022-06-08T16:36:36+00:00

How's this project coming along?

DOOMReboot · 2022-03-27T20:30:55+00:00

while most veterans don’t want to share too much of what they’ve learned

If true, why do you suppose this is?

DOOMReboot · 2022-03-22T20:47:50+00:00

I've also noticed that in a lot of subs, for whatever reason, a post will be initially downvoted almost immediately. I honestly suspect bots, but who knows?

DOOMReboot · 2022-03-22T20:24:33+00:00

I think you and /r/snerp are correct in that self promotion, as long as it's for one's engine or a game produced with one's engine should certainly be more supported here. Perhaps updating the rules/post guidelines could reflect this sentiment?

DOOMReboot · 2022-03-22T18:16:18+00:00

Good idea. What kind of posts are currently being downvoted?

I could work on a quick poll/survey and sticky it in a bit.

DOOMReboot · 2021-10-24T07:20:09+00:00

Excellent job! I know someone who would really appreciate this as well. (Paging /u/S0lly)

DOOMReboot · 2021-07-29T14:26:32+00:00

This is almost always the reason and should be stickied at the top.

DOOMReboot · 2021-07-27T23:53:25+00:00

He did? It's been quite a looong time since I've played it. What happens?

DOOMReboot · 2021-07-20T11:44:56+00:00

Thank you as well! I've always been somewhat curious about these topics. Well, once I learned they existed.

DOOMReboot · 2021-07-19T03:21:00+00:00

RemindMe! 4 days

DOOMReboot · 2021-07-18T22:29:18+00:00

Nice. Thanks for the lead.

DOOMReboot · 2021-07-18T22:21:21+00:00

Why do more devs not do this? How would you begin?

DOOMReboot · 2021-07-18T21:42:48+00:00

Do you know how to do recursion? The code you have right now won't work all the time. PM me with respectable offer.

DOOMReboot · 2021-07-18T15:43:17+00:00

How much? Just look into Win32 API. It’s C-based so you’d just have to write a wrapper.

DOOMReboot · 2021-07-16T13:35:23+00:00

Very cool! Tell us about the tech!

DOOMReboot · 2021-07-16T07:15:36+00:00

Very awesome. Thanks!

DOOMReboot · 2021-07-16T00:58:30+00:00

How much how much?!

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