iOS 20 Cool Fashion Art Filter Summary "attached source"

This article summarizes the 20 iOS filters are based on Gpuimage, 3 filters are included in the Gpuimage library, and 17 are the classic filters in Instagram, integrated into one project. Using Gpuimage can be very easy to create our own filter effects will always have the effect you want it. Under the article attached source download

I'm sure you're using the filter, too. The filter implementation is actually not a particularly difficult technique, attached below. Because the main implementation of several filters is a fragment coloring program, it will show

Amaro filter, implemented by the Fwamarofilter class. It's one of the classic filters in the Instagram app for any dark-toned photo

NSString *ConstKfwamaroshaderstring =shader_string (Precision lowpfloat;  Varying HIGHP vec2 texturecoordinate; Uniform sampler2d inputimagetexture; Uniform sampler2d InputImageTexture2; //Blowout;Uniform sampler2d inputImageTexture3;//Overlay;Uniform sampler2d InputImageTexture4;//Map  voidMain () {VEC4 Texel=texture2d (Inputimagetexture, texturecoordinate); VEC3 Bbtexel=texture2d (InputImageTexture2, texturecoordinate). RGB; TEXEL.R=texture2d (InputImageTexture3, VEC2 (BBTEXEL.R, TEXEL.R)). R; TEXEL.G=texture2d (InputImageTexture3, VEC2 (BBTEXEL.G, TEXEL.G)). G; TEXEL.B=texture2d (InputImageTexture3, VEC2 (bbtexel.b, texel.b)). b;     VEC4 mapped; MAPPED.R= Texture2d (InputImageTexture4, VEC2 (TEXEL.R,.16666). R; MAPPED.G= Texture2d (InputImageTexture4, VEC2 (TEXEL.G,.5). G; MAPPED.B= Texture2d (InputImageTexture4, VEC2 (texel.b,.83333). b; MAPPED.A=1.0; Gl_fragcolor=mapped;} );

Amaro

　　

Softelegance filter, implemented by Gpuimagesoftelegancefilter. Retro filter, feel like old on beach ~ ~ ~

　　

Missetikate Filter

　　

The Nashville filter, Nashville is one of the most stunning of Instagram's many filters, and the unique milkshake hue gives the photo a fairy-tale aesthetic feel. Scope of application: To create a romantic aesthetic feeling.

Lordkelvin filter.

　　

Amatorka Filter

　　

The rise filter allows the portrait skin to be well adjusted.

　　

Hudson Filter.

　　

XPROII Filter

　　

1977 Filters

　　

Valencia Filter

　　

Walden Filter

　　

Lomofi Filter

　　

Inkwell Filter

　　

Sierra Filter

　　

Earlybird Filter

　　

Sutro Filter

　　

Toaster filter

　　

Brannan Filter

　　

Hefe Filter

　　

Implementation of "Taking Fwnashvillefilter as an example"

　　Creating a filter class , I inherit all the filter classes from the Gpuimagefiltergroup class, which allows the classes we create to mix other filters. It is actually adding the required input texture image to the FWFilter1 class.

@interface fwnashvillefilter:gpuimagefiltergroup{    *imagesource;}

　

　　creates a filter effect that primarily implements the effect of a filter, including a fragment shader program. It is a concrete implementation of the filter effect

@interface Fwfilter1:gpuimagetwoinputfilter@end

　　

　　Application

+ (UIImage *) Applynashvillefilter: (UIImage *) image{    *filter = [[Fwnashvillefilter alloc] init];    [Filter forceProcessingAtSize:image.size];     *pic = [[Gpuimagepicture alloc] initwithimage:image];    [pic Addtarget:filter];        [pic Processimage];    [Filter usenextframeforimagecapture];     return [Filter Imagefromcurrentframebuffer];}

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iOS 20 Cool Fashion Art Filter Summary "attached source"