RTCFeatureFlags(3) Embree Ray Tracing Kernels 4 RTCFeatureFlags(3) 

RTCFeatureFlags - specifies features to enable
  for ray queries
    

#include <embree4/rtcore_ray.h>
enum RTCFeatureFlags
{
  RTC_FEATURE_FLAG_NONE = 0,
  
  RTC_FEATURE_FLAG_MOTION_BLUR = 1 << 0,
  RTC_FEATURE_FLAG_TRIANGLE = 1 << 1,
  RTC_FEATURE_FLAG_QUAD = 1 << 2,
  RTC_FEATURE_FLAG_GRID = 1 << 3,
  RTC_FEATURE_FLAG_SUBDIVISION = 1 << 4,
  RTC_FEATURE_FLAG_POINT = ... ,
  RTC_FEATURE_FLAG_CURVES = ... ,
 
  RTC_FEATURE_FLAG_CONE_LINEAR_CURVE = 1 << 5,
  RTC_FEATURE_FLAG_ROUND_LINEAR_CURVE  = 1 << 6,
  RTC_FEATURE_FLAG_FLAT_LINEAR_CURVE = 1 << 7,
  RTC_FEATURE_FLAG_ROUND_BEZIER_CURVE = 1 << 8,
  RTC_FEATURE_FLAG_FLAT_BEZIER_CURVE = 1 << 9,
  RTC_FEATURE_FLAG_NORMAL_ORIENTED_BEZIER_CURVE = 1 << 10,
  RTC_FEATURE_FLAG_ROUND_BSPLINE_CURVE = 1 << 11,
  RTC_FEATURE_FLAG_FLAT_BSPLINE_CURVE = 1 << 12,
  RTC_FEATURE_FLAG_NORMAL_ORIENTED_BSPLINE_CURVE = 1 << 13,
  RTC_FEATURE_FLAG_ROUND_HERMITE_CURVE = 1 << 14,
  RTC_FEATURE_FLAG_FLAT_HERMITE_CURVE = 1 << 15,
  RTC_FEATURE_FLAG_NORMAL_ORIENTED_HERMITE_CURVE = 1 << 16,
  RTC_FEATURE_FLAG_ROUND_CATMULL_ROM_CURVE = 1 << 17,
  RTC_FEATURE_FLAG_FLAT_CATMULL_ROM_CURVE = 1 << 18,
  RTC_FEATURE_FLAG_NORMAL_ORIENTED_CATMULL_ROM_CURVE = 1 << 19,
  RTC_FEATURE_FLAG_SPHERE_POINT = 1 << 20,
  RTC_FEATURE_FLAG_DISC_POINT = 1 << 21,
  RTC_FEATURE_FLAG_ORIENTED_DISC_POINT = 1 << 22,
  RTC_FEATURE_FLAG_ROUND_CURVES = ... ,
  RTC_FEATURE_FLAG_FLAT_CURVES = ... ,
  RTC_FEATURE_FLAG_NORMAL_ORIENTED_CURVES = ... ,
  
  RTC_FEATURE_FLAG_LINEAR_CURVES = ... ,
  RTC_FEATURE_FLAG_BEZIER_CURVES = ... ,
  RTC_FEATURE_FLAG_BSPLINE_CURVES = ... ,
  RTC_FEATURE_FLAG_HERMITE_CURVES = ... ,
  
  RTC_FEATURE_FLAG_INSTANCE = 1 << 23,
  RTC_FEATURE_FLAG_FILTER_FUNCTION_IN_ARGUMENTS = 1 << 24,
  RTC_FEATURE_FLAG_FILTER_FUNCTION_IN_GEOMETRY = 1 << 25,
  RTC_FEATURE_FLAG_FILTER_FUNCTION = ... ,
  RTC_FEATURE_FLAG_USER_GEOMETRY_CALLBACK_IN_ARGUMENTS = 1 << 26,
  RTC_FEATURE_FLAG_USER_GEOMETRY_CALLBACK_IN_GEOMETRY = 1 << 27,
  RTC_FEATURE_FLAG_USER_GEOMETRY = ... ,
  RTC_FEATURE_FLAG_32_BIT_RAY_MASK = 1 << 28,
  RTC_FEATURE_FLAG_ALL = 0xffffffff
};

The RTCFeatureFlags enum specify a bit mask to enable specific ray tracing features for ray query operations. The feature flags are passed to the rtcIntersect1/4/8/16 and rtcOccluded1/4/8/16 functions through the RTCIntersectArguments and RTCOccludedArguments structures. Only a ray tracing feature whose bit is enabled in the feature mask can get used. If a feature bit is not set, the behaviour is undefined, thus the feature may work or not. To enable multiple features the respective features have to get combined using a bitwise OR operation.

The purpose of feature flags is to reduce code size on the GPU by enabling just the features required to render the scene. On the CPU there is no need to use feature flags, and the default of all features enabled (RTC_FEATURE_FLAG_ALL) can just be kept.

The following features can get enabled using feature flags:

•
RTC_FEATURE_FLAG_MOTION_BLUR: Enables motion blur for all geometry types.
•
RTC_FEATURE_FLAG_TRIANGLE: Enables triangle geometries (RTC_GEOMETRY_TYPE_TRIANGLE).
•
RTC_FEATURE_FLAG_QUAD: Enables quad geometries (RTC_GEOMETRY_TYPE_QUAD).
•
RTC_FEATURE_FLAG_GRID: Enables grid geometries (RTC_GEOMETRY_TYPE_GRID).
•
RTC_FEATURE_FLAG_SUBDIVISION: Enables subdivision geometries (RTC_GEOMETRY_TYPE_SUBDIVISION).
•
RTC_FEATURE_FLAG_POINT: Enables all point geometry types (RTC_GEOMETRY_TYPE_XXX_POINT)
•
RTC_FEATURE_FLAG_CURVES: Enables all curve geometry types (RTC_GEOMETRY_TYPE_XXX_YYY_CURVE)
•
RTC_FEATURE_FLAG_ROUND_CURVES: Enables all round curves (RTC_GEOMETRY_TYPE_ROUND_XXX_CURVE).
•
RTC_FEATURE_FLAG_FLAT_CURVES: Enables all flat curves (RTC_GEOMETRY_TYPE_FLAT_XXX_CURVE).
•
RTC_FEATURE_FLAG_NORMAL_ORIENTED_CURVES: Enables all normal oriented curves (RTC_GEOMETRY_TYPE_NORMAL_ORIENTED_XXX_CURVE).
•
RTC_FEATURE_FLAG_LINEAR_CURVES: Enables all linear curves (RTC_GEOMETRY_TYPE_XXX_LINEAR_CURVE).
•
RTC_FEATURE_FLAG_BEZIER_CURVES: Enables all Bézier curves (RTC_GEOMETRY_TYPE_XXX_BEZIER_CURVE).
•
RTC_FEATURE_FLAG_BSPLINE_CURVES: Enables all B-spline curves (RTC_GEOMETRY_TYPE_XXX_BSPLINE_CURVE).
•
RTC_FEATURE_FLAG_HERMITE_CURVES: Enables all Hermite curves (RTC_GEOMETRY_TYPE_XXX_HERMITE_CURVE).
•
RTC_FEATURE_FLAG_CONE_LINEAR_CURVE: Enables cone geometry type (RTC_GEOMETRY_TYPE_CONE_LINEAR_CURVE).
•
RTC_FEATURE_FLAG_ROUND_LINEAR_CURVE: Enables round linear curves (RTC_GEOMETRY_TYPE_ROUND_LINEAR_CURVE).
•
RTC_FEATURE_FLAG_FLAT_LINEAR_CURVE: Enables flat linear curves (RTC_GEOMETRY_TYPE_FLAT_LINEAR_CURVE).
•
RTC_FEATURE_FLAG_ROUND_BEZIER_CURVE: Enables round Bézier curves (RTC_GEOMETRY_TYPE_ROUND_BEZIER_CURVE).
•
RTC_FEATURE_FLAG_FLAT_BEZIER_CURVE: Enables flat Bézier curves (RTC_GEOMETRY_TYPE_FLAT_BEZIER_CURVE).
•
RTC_FEATURE_FLAG_NORMAL_ORIENTED_BEZIER_CURVE: Enables normal oriented Bézier curves (RTC_GEOMETRY_TYPE_NORMAL_ORIENTED_BEZIER_CURVE).
•
RTC_FEATURE_FLAG_ROUND_BSPLINE_CURVE: Enables round B-spline curves (RTC_GEOMETRY_TYPE_ROUND_BSPLINE_CURVE).
•
RTC_FEATURE_FLAG_FLAT_BSPLINE_CURVE: Enables flat B-spline curves (RTC_GEOMETRY_TYPE_FLAT_BSPLINE_CURVE).
•
RTC_FEATURE_FLAG_NORMAL_ORIENTED_BSPLINE_CURVE: Enables normal oriented B-spline curves (RTC_GEOMETRY_TYPE_NORMAL_ORIENTED_BSPLINE_CURVE).
•
RTC_FEATURE_FLAG_ROUND_HERMITE_CURVE: Enables round Hermite curves (RTC_GEOMETRY_TYPE_ROUND_HERMITE_CURVE).
•
RTC_FEATURE_FLAG_FLAT_HERMITE_CURVE: Enables flat Hermite curves (RTC_GEOMETRY_TYPE_FLAT_HERMITE_CURVE).
•
RTC_FEATURE_FLAG_NORMAL_ORIENTED_HERMITE_CURVE: Enables normal oriented Hermite curves (RTC_GEOMETRY_TYPE_NORMAL_ORIENTED_HERMITE_CURVE).
•
RTC_FEATURE_FLAG_ROUND_CATMULL_ROM_CURVE: Enables round Catmull Rom curves (RTC_GEOMETRY_TYPE_ROUND_CATMULL_ROM_CURVE).
•
RTC_FEATURE_FLAG_FLAT_CATMULL_ROM_CURVE: Enables flat Catmull Rom curves (RTC_GEOMETRY_TYPE_FLAT_CATMULL_ROM_CURVE).
•
RTC_FEATURE_FLAG_NORMAL_ORIENTED_CATMULL_ROM_CURVE: Enables normal oriented Catmull Rom curves (RTC_GEOMETRY_TYPE_NORMAL_ORIENTED_CATMULL_ROM_CURVE).
•
RTC_FEATURE_FLAG_SPHERE_POINT: Enables sphere geometry type (RTC_GEOMETRY_TYPE_SPHERE_POINT).
•
RTC_FEATURE_FLAG_DISC_POINT: Enables disc geometry type (RTC_GEOMETRY_TYPE_DISC_POINT).
•
RTC_FEATURE_FLAG_ORIENTED_DISC_POINT: Enables oriented disc geometry types (RTC_GEOMETRY_TYPE_ORIENTED_DISC_POINT).
•
RTC_FEATURE_FLAG_INSTANCE: Enables instance geometries (RTC_GEOMETRY_TYPE_INSTANCE).
•
RTC_FEATURE_FLAG_FILTER_FUNCTION_IN_ARGUMENTS: Enables filter functions passed through intersect arguments.
•
RTC_FEATURE_FLAG_FILTER_FUNCTION_IN_GEOMETRY: Enable filter functions passed through geometry.
•
RTC_FEATURE_FLAG_FILTER_FUNCTION: Enables filter functions (argument and geometry version).
•
RTC_FEATURE_FLAG_USER_GEOMETRY_CALLBACK_IN_ARGUMENTS: Enables RTC_GEOMETRY_TYPE_USER with function pointer passed through intersect arguments.
•
RTC_FEATURE_FLAG_USER_GEOMETRY_CALLBACK_IN_GEOMETRY: Enables RTC_GEOMETRY_TYPE_USER with function pointer passed through geometry object.
•
RTC_FEATURE_FLAG_USER_GEOMETRY: Enables RTC_GEOMETRY_TYPE_USER geometries (both argument and geometry callback versions).
•
RTC_FEATURE_FLAG_32_BIT_RAY_MASK: Enables full 32 bit ray masks. If not used, only the lower 7 bits in the ray mask are handled correctly.
•
RTC_FEATURE_FLAG_ALL: Enables all features (default).

[rtcIntersect1], [rtcIntersect4/8/16], [rtcOccluded1], [rtcOccluded4/8/16],