99精在线,日韩嗯啊啊视频

一.簡介
二.效果演示
三.源碼下載
四.猜你喜歡

零基礎(chǔ) OpenGL (ES) 學(xué)習(xí)路線推薦 : OpenGL (ES) 學(xué)習(xí)目錄 >> OpenGL ES 基礎(chǔ)

零基礎(chǔ) OpenGL (ES) 學(xué)習(xí)路線推薦 : OpenGL (ES) 學(xué)習(xí)目錄 >> OpenGL ES 轉(zhuǎn)場

零基礎(chǔ) OpenGL (ES) 學(xué)習(xí)路線推薦 : OpenGL (ES) 學(xué)習(xí)目錄 >> OpenGL ES 特效

零基礎(chǔ) OpenGL (ES) 學(xué)習(xí)路線推薦 : OpenGL (ES) 學(xué)習(xí)目錄 >> OpenGL ES 函數(shù)

零基礎(chǔ) OpenGL (ES) 學(xué)習(xí)路線推薦 : OpenGL (ES) 學(xué)習(xí)目錄 >> OpenGL ES GPUImage 使用

零基礎(chǔ) OpenGL (ES) 學(xué)習(xí)路線推薦 : OpenGL (ES) 學(xué)習(xí)目錄 >> OpenGL ES GLSL 編程

一.簡介

GPUImage 共 125 個(gè)濾鏡, 分為四類

1、Color adjustments : 31 filters , 顏色處理相關(guān)
2、Image processing : 40 filters , 圖像處理相關(guān).
3、Blending modes : 29 filters , 混合模式相關(guān).
4、Visual effects : 25 filters , 視覺效果相關(guān).

GPUImageMissEtikateFilter 屬于 GPUImage 顏色處理相關(guān)，用來處理圖片 lookup 濾鏡

GPUImageMissEtikateFilter 基于 Photoshop 行動(dòng)的照片過濾器,類似 GPUImageLookupFilter；

shader 源碼如下：

/******************************************************************************************/
//@Author:猿說編程
//@Blog(個(gè)人博客地址): www.codersrc.com
//@File:IOS – OpenGL ES 設(shè)置圖像濾鏡 GPUImageMissEtikateFilter
//@Time:2022/04/10 07:30
//@Motto:不積跬步無以至千里，不積小流無以成江海，程序人生的精彩需要堅(jiān)持不懈地積累！
/******************************************************************************************/

#if TARGET_IPHONE_SIMULATOR || TARGET_OS_IPHONE
NSString *const kGPUImageLookupFragmentShaderString = SHADER_STRING
(
 varying highp vec2 textureCoordinate;
 varying highp vec2 textureCoordinate2; // TODO: This is not used

 uniform sampler2D inputImageTexture;
 uniform sampler2D inputImageTexture2; // lookup texture

 uniform lowp float intensity;

 void main()
 {
     highp vec4 textureColor = texture2D(inputImageTexture, textureCoordinate);

     highp float blueColor = textureColor.b * 63.0;

     highp vec2 quad1;
     quad1.y = floor(floor(blueColor) / 8.0);
     quad1.x = floor(blueColor) - (quad1.y * 8.0);

     highp vec2 quad2;
     quad2.y = floor(ceil(blueColor) / 8.0);
     quad2.x = ceil(blueColor) - (quad2.y * 8.0);

     highp vec2 texPos1;
     texPos1.x = (quad1.x * 0.125) + 0.5/512.0 + ((0.125 - 1.0/512.0) * textureColor.r);
     texPos1.y = (quad1.y * 0.125) + 0.5/512.0 + ((0.125 - 1.0/512.0) * textureColor.g);

     highp vec2 texPos2;
     texPos2.x = (quad2.x * 0.125) + 0.5/512.0 + ((0.125 - 1.0/512.0) * textureColor.r);
     texPos2.y = (quad2.y * 0.125) + 0.5/512.0 + ((0.125 - 1.0/512.0) * textureColor.g);

     lowp vec4 newColor1 = texture2D(inputImageTexture2, texPos1);
     lowp vec4 newColor2 = texture2D(inputImageTexture2, texPos2);

     lowp vec4 newColor = mix(newColor1, newColor2, fract(blueColor));
     gl_FragColor = mix(textureColor, vec4(newColor.rgb, textureColor.w), intensity);
 }
);
#else
NSString *const kGPUImageLookupFragmentShaderString = SHADER_STRING
(
 varying vec2 textureCoordinate;
 varying vec2 textureCoordinate2; // TODO: This is not used

 uniform sampler2D inputImageTexture;
 uniform sampler2D inputImageTexture2; // lookup texture

 uniform float intensity;

 void main()
 {
     vec4 textureColor = texture2D(inputImageTexture, textureCoordinate);

     float blueColor = textureColor.b * 63.0;

     vec2 quad1;
     quad1.y = floor(floor(blueColor) / 8.0);
     quad1.x = floor(blueColor) - (quad1.y * 8.0);

     vec2 quad2;
     quad2.y = floor(ceil(blueColor) / 8.0);
     quad2.x = ceil(blueColor) - (quad2.y * 8.0);

     vec2 texPos1;
     texPos1.x = (quad1.x * 0.125) + 0.5/512.0 + ((0.125 - 1.0/512.0) * textureColor.r);
     texPos1.y = (quad1.y * 0.125) + 0.5/512.0 + ((0.125 - 1.0/512.0) * textureColor.g);

     vec2 texPos2;
     texPos2.x = (quad2.x * 0.125) + 0.5/512.0 + ((0.125 - 1.0/512.0) * textureColor.r);
     texPos2.y = (quad2.y * 0.125) + 0.5/512.0 + ((0.125 - 1.0/512.0) * textureColor.g);

     vec4 newColor1 = texture2D(inputImageTexture2, texPos1);
     vec4 newColor2 = texture2D(inputImageTexture2, texPos2);

     vec4 newColor = mix(newColor1, newColor2, fract(blueColor));
     gl_FragColor = mix(textureColor, vec4(newColor.rgb, textureColor.w), intensity);
 }
);
#endif