IOS OpenGL ES GPUImage GPUImageWeakPixelInclusionFilter
目录[*]一.简介
[*]二.效果演示
[*]三.源码下载
[*]四.猜你喜欢
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一.简介
GPUImage 共 125 个滤镜, 分为四类
1、Color adjustments : 31 filters , 颜色处理相关
2、Image processing : 40 filters , 图像处理相关.
3、Blending modes : 29 filters , 混合模式相关.
4、Visual effects : 25 filters , 视觉效果相关.
GPUImageWeakPixelInclusionFilter 属于 GPUImage 图像视觉效果相关。shader 源码如下：
/******************************************************************************************/
//@Author:猿说编程
//@Blog(个人博客地址): www.codersrc.com
//@File:IOS – OpenGL ES GPUImage GPUImageWeakPixelInclusionFilter
//@Time:2022/06/26 06:30
//@Motto:不积跬步无以至千里，不积小流无以成江海，程序人生的精彩需要坚持不懈地积累！
/******************************************************************************************/
#if TARGET_IPHONE_SIMULATOR || TARGET_OS_IPHONE
NSString *const kGPUImageWeakPixelInclusionFragmentShaderString = SHADER_STRING
(
precision lowp float;
varying vec2 textureCoordinate;
varying vec2 leftTextureCoordinate;
varying vec2 rightTextureCoordinate;
varying vec2 topTextureCoordinate;
varying vec2 topLeftTextureCoordinate;
varying vec2 topRightTextureCoordinate;
varying vec2 bottomTextureCoordinate;
varying vec2 bottomLeftTextureCoordinate;
varying vec2 bottomRightTextureCoordinate;
uniform sampler2D inputImageTexture;
void main()
{
float bottomLeftIntensity = texture2D(inputImageTexture, bottomLeftTextureCoordinate).r;
float topRightIntensity = texture2D(inputImageTexture, topRightTextureCoordinate).r;
float topLeftIntensity = texture2D(inputImageTexture, topLeftTextureCoordinate).r;
float bottomRightIntensity = texture2D(inputImageTexture, bottomRightTextureCoordinate).r;
float leftIntensity = texture2D(inputImageTexture, leftTextureCoordinate).r;
float rightIntensity = texture2D(inputImageTexture, rightTextureCoordinate).r;
float bottomIntensity = texture2D(inputImageTexture, bottomTextureCoordinate).r;
float topIntensity = texture2D(inputImageTexture, topTextureCoordinate).r;
float centerIntensity = texture2D(inputImageTexture, textureCoordinate).r;
float pixelIntensitySum = bottomLeftIntensity + topRightIntensity + topLeftIntensity + bottomRightIntensity + leftIntensity + rightIntensity + bottomIntensity + topIntensity + centerIntensity;
float sumTest = step(1.5, pixelIntensitySum);
float pixelTest = step(0.01, centerIntensity);
gl_FragColor = vec4(vec3(sumTest * pixelTest), 1.0);
}
);
#else
NSString *const kGPUImageWeakPixelInclusionFragmentShaderString = SHADER_STRING
(
varying vec2 textureCoordinate;
varying vec2 leftTextureCoordinate;
varying vec2 rightTextureCoordinate;
varying vec2 topTextureCoordinate;
varying vec2 topLeftTextureCoordinate;
varying vec2 topRightTextureCoordinate;
varying vec2 bottomTextureCoordinate;
varying vec2 bottomLeftTextureCoordinate;
varying vec2 bottomRightTextureCoordinate;
uniform sampler2D inputImageTexture;
void main()
{
float bottomLeftIntensity = texture2D(inputImageTexture, bottomLeftTextureCoordinate).r;
float topRightIntensity = texture2D(inputImageTexture, topRightTextureCoordinate).r;
float topLeftIntensity = texture2D(inputImageTexture, topLeftTextureCoordinate).r;
float bottomRightIntensity = texture2D(inputImageTexture, bottomRightTextureCoordinate).r;
float leftIntensity = texture2D(inputImageTexture, leftTextureCoordinate).r;
float rightIntensity = texture2D(inputImageTexture, rightTextureCoordinate).r;
float bottomIntensity = texture2D(inputImageTexture, bottomTextureCoordinate).r;
float topIntensity = texture2D(inputImageTexture, topTextureCoordinate).r;
float centerIntensity = texture2D(inputImageTexture, textureCoordinate).r;
float pixelIntensitySum = bottomLeftIntensity + topRightIntensity + topLeftIntensity + bottomRightIntensity + leftIntensity + rightIntensity + bottomIntensity + topIntensity + centerIntensity;
float sumTest = step(1.5, pixelIntensitySum);
float pixelTest = step(0.01, centerIntensity);
gl_FragColor = vec4(vec3(sumTest * pixelTest), 1.0);
}
);
#endif二.效果演示
使用 GPUImageWeakPixelInclusionFilter **,**原图如下：
https://dis.qidao123.com/imgproxy/aHR0cHM6Ly9pbWcyMDIyLmNuYmxvZ3MuY29tL290aGVyLzY0MTYwNC8yMDIyMDcvNjQxNjA0LTIwMjIwNzI2MDgxMTIxMDEzLTQ3MjM4OTE4NS5qcGc=
使用 GPUImageWeakPixelInclusionFilter 效果如下：
https://dis.qidao123.com/imgproxy/aHR0cHM6Ly9pbWcyMDIyLmNuYmxvZ3MuY29tL290aGVyLzY0MTYwNC8yMDIyMDcvNjQxNjA0LTIwMjIwNzI2MDgxMTIxMjg3LTE4NzQ4NjM4NzIucG5n
三.源码下载
OpenGL ES Demo 下载地址 : IOS OpenGL ES GPUImage GPUImageWeakPixelInclusionFilter
https://dis.qidao123.com/imgproxy/aHR0cHM6Ly9pbWcyMDIyLmNuYmxvZ3MuY29tL290aGVyLzY0MTYwNC8yMDIyMDcvNjQxNjA0LTIwMjIwNzI2MDgxMTIxODQyLTEyNTQxMzUwODQucG5n
四.猜你喜欢
[*]IOS OPenGL ES 设置图像亮度 GPUImageBrightnessFilter
[*]IOS OPenGL ES 调节图像曝光度 GPUImageExposureFilter
[*]IOS OpenGL ES 调节图像对比度 GPUImageContrastFilter
[*]IOS OPenGL ES 调节图像饱和度 GPUImageSaturationFilter
[*]IOS OPenGL ES 调节图像伽马线 GPUImageGammaFilter
[*]IOS OpenGL ES 调节图像反色 GPUImageColorInvertFilter
[*]IOS OpenGL ES 调节图像褐色 GPUImageSepiaFilter
[*]IOS OpenGL ES 调节图像灰色 GPUImageGrayscaleFilter
[*]IOS OpenGL ES 调节图像 RGB 通道 GPUImageRGBFilter
[*]IOS OpenGL ES 调节图像不透明度 GPUImageOpacityFilter
[*]IOS OpenGL ES 调节图像阴影 GPUImageHighlightShadowFilter
[*]IOS OpenGL ES 调节图像色彩替换 GPUImageFalseColorFilter
[*]GPUImage – 色彩直方图 GPUImageHistogramFilter
[*]GPUImage – 色彩直方图 GPUImageHistogramGenerator
[*]GPUImage – 像素平均色值 GPUImageAverageColor
[*]GPUImage – 亮度平均 GPUImageLuminosity
[*]IOS OpenGL ES 调节图像色度 GPUImageHueFilter
[*]IOS OpenGL ES 指定颜色抠图 GPUImageChromaKeyFilter
[*]IOS OpenGL ES 调节图像白平衡/色温 GPUImageWhiteBalanceFilter
[*]IOS OpenGL ES 设置图像 lookup 滤镜 GPUImageLookupFilter
[*]IOS OpenGL ES 设置图像滤镜 GPUImageAmatorkaFilter
[*]IOS OpenGL ES 设置图像滤镜 GPUImageSoftEleganceFilter
[*]IOS OpenGL ES 设置图像锐化 GPUImageSharpenFilter
[*]IOS OpenGL ES 绘制十字 GPUImageCrosshairGenerator
[*]IOS OpenGL ES 绘制线条 GPUImageLineGenerator
[*]IOS OpenGL ES 设置图像黑白燥点 GPUImageLocalBinaryPatternFilter
[*]IOS OpenGL ES 设置图像卡通效果（黑色粗线描边） GPUImageToonFilter
[*]IOS OpenGL ES 桑原滤波/水粉画模糊效果 GPUImageKuwaharaFilter
[*]IOS OpenGL ES 黑白马赛克效果 GPUImageMosaicFilter
[*]IOS OpenGL ES 像素化马赛克效果 GPUImagePixellateFilter
[*]IOS OpenGL ES 同心圆像素化马赛克效果 GPUImagePolarPixel
[*]IOS OpenGL ES 黑白网状效果 GPUImageCrosshatchFilter
[*]IOS OpenGL ES 色彩丢失/模糊效果 GPUImageColorPackingFilter
[*]IOS OpenGL ES 图像晕影 GPUImageVignetteFilter
[*]IOS OpenGL ES 图像漩涡 GPUImageSwirlFilter
[*]IOS OpenGL ES 图像鱼眼扩散效果 GPUImageBulgeDistortionFilter
[*]IOS OpenGL ES 图像鱼眼移动效果 GPUImageBulgeDistortionFilter
[*]IOS OpenGL ES 图像凹面镜移动效果 GPUImagePinchDistortionFilter
[*]IOS OpenGL ES 图像凹面镜放大效果 GPUImagePinchDistortionFilter
[*]IOS OpenGL ES 图像哈哈镜效果 GPUImageStretchDistortionFilter
[*]IOS OpenGL ES 图像水晶球效果 GPUImageGlassSphereFilter
[*]IOS OpenGL ES 图像球形折射 GPUImageSphereRefractionFilter
[*]IOS OpenGL ES 图像色调分离噪点效果 GPUImagePosterizeFilter
[*]IOS OpenGL ES 图像 CGA 色彩滤镜 GPUImageCGAColorspaceFilter
[*]IOS OpenGL ES 图像柏林噪点/花边噪点 GPUImagePerlinNoiseFilter
[*]IOS OpenGL ES 图像加亮边缘 GPUImage3x3ConvolutionFilter
[*]IOS OpenGL ES 图像浮雕 3d 效果 GPUImageEmbossFilter
[*]IOS OpenGL ES 图像马赛克圆点 GPUImagePolkaDotFilter
[*]IOS OpenGL ES 图像侵蚀边缘黑白模糊 GPUImageErosionFilter
[*]IOS OpenGL ES 图像侵蚀边缘色彩模糊 GPUImageRGBErosionFilter
[*]IOS OpenGL ES 图像扩展边缘黑白模糊 GPUImageDilationFilter
[*]IOS OpenGL ES 图像扩展边缘彩色模糊 GPUImageRGBDilationFilter
[*]IOS OpenGL ES GPUImage 黑白色调模糊 GPUImageOpeningFilter
[*]IOS OpenGL ES GPUImage 彩色模糊 GPUImageRGBOpeningFilter
[*]IOS OpenGL ES GPUImage 图像黑白色调模糊/暗色提亮 GPUImageClosingFilter
[*]IOS OpenGL ES GPUImage 图像彩色调模糊/暗色提亮 GPUImageRGBClosingFilter
[*]IOS OpenGL ES GPUImage 图像 Lanczos 重取样模糊效果 GPUImageLanczosResamplingFilter
[*]IOS OpenGL ES GPUImage 图像显示亮度最高的像素,其他为黑 GPUImageNonMaximumSuppressionFilter
[*]IOS OpenGL ES GPUImage 图像显示亮度最高的像素,其他为黑 GPUImageThresholdedNonMaximumSuppressionFilter
[*]IOS OpenGL ES GPUImage 图像 Sobel 边缘检测，类似漫画反色 GPUImageSobelEdgeDetectionFilter
[*]IOS OpenGL ES GPUImage GPUImageWeakPixelInclusionFilter
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