MPSImageTent(3)        MetalPerformanceShaders.framework       MPSImageTent(3)

NAME

       MPSImageTent

SYNOPSIS

       #import <MPSImageConvolution.h>

       Inherits MPSImageBox.

   Additional Inherited Members

Detailed Description

       The box filter, while fast, may yield square-ish looking blur effects.
       However, multiple passes of the box filter tend to smooth out with each
       additional pass. For example, two 3-wide box blurs produces the same
       effective convolution as a 5-wide tent blur:

       1   1   1
           1   1   1
       +       1   1   1
       =================
       1   2   3   2   1


        Addition passes tend to approximate a gaussian line shape.

       The MPSImageTent convolves an image with a tent filter. These form a
       tent shape with incrementally increasing sides, for example:

       1   2   3   2   1


       1   2   1
       2   4   2
       1   2   1



       Like the box filter, this arrangement allows for much faster
       algorithms, espcially for for larger blur radii but with a more
       pleasing appearance.

       The tent blur is a separable filter. The implementation is aware of
       this and will act accordingly to give best performance for multi-
       dimensional blurs.

Author

       Generated automatically by Doxygen for
       MetalPerformanceShaders.framework from the source code.





Version MetalPerformanceShaders-Thu2Jul 13 2017                MPSImageTent(3)


Mac OS X 10.13.1 - Generated Tue Nov  7 16:23:24 CST 2017