.TH "MPSImageHistogramInfo" 3 "Mon Jul 9 2018" "Version MetalPerformanceShaders-119.3" "MetalPerformanceShaders.framework" \" -*- nroff -*-
.ad l
.nh
.SH NAME
MPSImageHistogramInfo \- Specifies information to compute the histogram for channels of an image\&.  

.SH SYNOPSIS
.br
.PP
.PP
\fC#include <MPSImageHistogram\&.h>\fP
.SS "Public Attributes"

.in +1c
.ti -1c
.RI "NSUInteger \fBnumberOfHistogramEntries\fP"
.br
.ti -1c
.RI "BOOL \fBhistogramForAlpha\fP"
.br
.ti -1c
.RI "vector_float4 \fBminPixelValue\fP"
.br
.ti -1c
.RI "vector_float4 \fBmaxPixelValue\fP"
.br
.in -1c
.SH "Detailed Description"
.PP 
Specifies information to compute the histogram for channels of an image\&. 

\fBMPSImageHistogram\&.h\fP  MetalPerformanceShaders\&.framework
.PP
\fBCopyright:\fP
.RS 4
Copyright (c) 2015 Apple Inc\&. All rights reserved\&.  MetalPerformanceShaders histogram filters 
.RE
.PP

.SH "Member Data Documentation"
.PP 
.SS "BOOL MPSImageHistogramInfo::histogramForAlpha"
Specifies whether the histogram for the alpha channel should be computed or not\&. 
.SS "vector_float4 MPSImageHistogramInfo::maxPixelValue"
Specifies the maximum pixel value\&. Any pixel value greater than this will be clipped to this value (for the purposes of histogram calculation), and assigned to the last histogram entry\&. This maximum value is applied to each of the four channels separately\&. 
.SS "vector_float4 MPSImageHistogramInfo::minPixelValue"
Specifies the minimum pixel value\&. Any pixel value less than this will be clipped to this value (for the purposes of histogram calculation), and assigned to the first histogram entry\&. This minimum value is applied to each of the four channels separately\&. 
.SS "NSUInteger MPSImageHistogramInfo::numberOfHistogramEntries"
Specifies the number of histogram entries, or 'bins' for each channel\&. For example, if you want 256 histogram bins then numberOfHistogramEntries must be set to 256\&. The value stored in each histogram bin is a 32-bit unsigned integer\&. The size of the histogram buffer in which these bins will be stored should be >= numberOfHistogramEntries * sizeof(uint32_t) * number of channels in the image\&. numberOfHistogramEntries must be a power of 2 and is a minimum of 256 bins\&. 

.SH "Author"
.PP 
Generated automatically by Doxygen for MetalPerformanceShaders\&.framework from the source code\&.