2014/10/15 下午 10:08:34

iphone Programming Glossary: excludecircleradius

How do I modify a GPUImageGaussianSelectiveBlurFilter to operate over a rectangle instead of a circle?

http://stackoverflow.com/questions/12257429/how-do-i-modify-a-gpuimagegaussianselectiveblurfilter-to-operate-over-a-rectangl

vec2 textureCoordinate2 uniform sampler2D inputImageTexture uniform sampler2D inputImageTexture2 uniform lowp float excludeCircleRadius uniform lowp vec2 excludeCirclePoint uniform lowp float excludeBlurSize uniform highp float aspectRatio void main lowp vec4.. distance excludeCirclePoint textureCoordinateToUse gl_FragColor mix sharpImageColor blurredImageColor smoothstep excludeCircleRadius excludeBlurSize excludeCircleRadius distanceFromCenter This fragment shader takes in a pixel color value from both the original.. gl_FragColor mix sharpImageColor blurredImageColor smoothstep excludeCircleRadius excludeBlurSize excludeCircleRadius distanceFromCenter This fragment shader takes in a pixel color value from both the original sharp image and a Gaussian blurred..