.TH "MPSIntersectionDistancePrimitiveIndexInstanceIndex" 3 "Mon Jul 9 2018" "Version MetalPerformanceShaders-119.3" "MetalPerformanceShaders.framework" \" -*- nroff -*-
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.SH NAME
MPSIntersectionDistancePrimitiveIndexInstanceIndex \- Intersection result which contains the distance from the ray origin to the intersection point, the index of the intersected primitive, and the index of the intersected instance\&.  

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

.in +1c
.ti -1c
.RI "float \fBdistance\fP"
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.RI "Distance from the ray origin to the intersection point along the ray direction vector such that intersection = ray\&.origin + ray\&.direction * distance\&. Is negative if there is no intersection\&. If the intersection type is MPSIntersectionTypeAny, is a positive value for a hit or a negative value for a miss\&. "
.ti -1c
.RI "unsigned int \fBprimitiveIndex\fP"
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.RI "Index of the intersected primitive\&. Undefined if the ray does not intersect a primitive or if the intersection type is MPSIntersectionTypeAny\&. "
.ti -1c
.RI "unsigned int \fBinstanceIndex\fP"
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.RI "Index of the intersected instance\&. Undefined if the ray does not intersect a primitive, if the acceleration structure is not an instance acceleration structure, or if the intersection type is MPSIntersectionTypeAny\&. "
.in -1c
.SH "Detailed Description"
.PP 
Intersection result which contains the distance from the ray origin to the intersection point, the index of the intersected primitive, and the index of the intersected instance\&. 

This type is available from the Metal Shading Language by including the MetalPerformanceShaders/MetalPerformanceShaders\&.h header\&. 
.SH "Member Data Documentation"
.PP 
.SS "float MPSIntersectionDistancePrimitiveIndexInstanceIndex::distance"

.PP
Distance from the ray origin to the intersection point along the ray direction vector such that intersection = ray\&.origin + ray\&.direction * distance\&. Is negative if there is no intersection\&. If the intersection type is MPSIntersectionTypeAny, is a positive value for a hit or a negative value for a miss\&. 
.SS "unsigned int MPSIntersectionDistancePrimitiveIndexInstanceIndex::instanceIndex"

.PP
Index of the intersected instance\&. Undefined if the ray does not intersect a primitive, if the acceleration structure is not an instance acceleration structure, or if the intersection type is MPSIntersectionTypeAny\&. 
.SS "unsigned int MPSIntersectionDistancePrimitiveIndexInstanceIndex::primitiveIndex"

.PP
Index of the intersected primitive\&. Undefined if the ray does not intersect a primitive or if the intersection type is MPSIntersectionTypeAny\&. 

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