alexiscn / metalfilters Goto Github PK

比如调整亮度的时候，默认0但是和原图不一致，好像比原图暗一点

Hi there,
I'm working on an application in which I've to add the image filter functionality with filters like instagram and I found MetalFilters is the perfect for me. Only one thing that bother me is that "How to add more custom filters (i.e. how to create custom filter files to add more custom filters)?"
Please help me with this.

Thank You.

Hi Alex,
I'm very thankful for your very useful Repo
Actually, I'm an Android developer, and I've been developing an Instagram like app but I couldn't find All Instagram filters while I've seen your fantastic Repo. In fact, I've been using GLSL, so I convert your metal code but I couldn't find Input Textures that you have used in the Lux program.

Would you please help me?
and did you now GLSL? I'm wondering how did you write all the Instagram filters.

Filters/MTValenciaFilter.metal:23: no matching constructor for initialization of 'metal::float3x3' (aka 'matrix<float, 3, 3>')
我想问下有替代float3x3的函数吗，我想在iOS10下面跑

Hi Dear @alexiscn
Firstly Thank you for your useful repo; it makes our road easier
Actually, I'm trying to use Filters on Video with AVPlayer and MetalPetal MTIVideoComposition, but after videoComposition is exported and added to PlayerItem, Video is not working anymore and freeze.
I will appreciate it If you can help me to solve this issue.

很棒的项目，我对比了instagram photo filter。完全一致！

可以请教一下filter的参数是如何获得的么，最近我在研究Core Image，想尝试一下能不能写出和INS一样的filter效果，不过一致找不到INS filter的参数设置。

This issue happens on the Demo app because some resources cannot be loaded.

Crashed here "Fatal error: Unexpectedly found nil while unwrapping an Optional value"

I just found out that the problem is somewhere in metal file, for example "MTHudsonFragment" in MTHudsonFilter.metal. I do not know what the problem is exactly. Thank you!

Could you tell me your tool to make LUT png ?