kernel_bvh.h File Reference

Go to the source code of this file.

Defines
#define	ENTRYPOINT_SENTINEL   0x76543210
#define	BVH_STACK_SIZE   192
#define	BVH_NODE_SIZE   4
#define	TRI_NODE_SIZE   3
#define	NO_EXTENDED_PRECISION
Functions
__device_inline float3	bvh_inverse_direction (float3 dir)
__device_inline void	bvh_instance_push (KernelGlobals *kg, int object, const Ray *ray, float3 *P, float3 *idir, float *t, const float tmax)
__device_inline void	bvh_instance_pop (KernelGlobals *kg, int object, const Ray *ray, float3 *P, float3 *idir, float *t, const float tmax)
__device_inline void	bvh_node_intersect (KernelGlobals *kg, bool *traverseChild0, bool *traverseChild1, bool *closestChild1, int *nodeAddr0, int *nodeAddr1, float3 P, float3 idir, float t, uint visibility, int nodeAddr)
__device_inline void	bvh_triangle_intersect (KernelGlobals *kg, Intersection *isect, float3 P, float3 idir, uint visibility, int object, int triAddr)
__device_inline bool	scene_intersect (KernelGlobals *kg, const Ray *ray, const uint visibility, Intersection *isect)
__device_inline float3	ray_offset (float3 P, float3 Ng)
__device_inline float3	bvh_triangle_refine (KernelGlobals *kg, const Intersection *isect, const Ray *ray)

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Define Documentation

#define BVH_NODE_SIZE   4

Definition at line 33 of file kernel_bvh.h.

Referenced by bvh_node_intersect(), and scene_intersect().

#define BVH_STACK_SIZE   192

Definition at line 32 of file kernel_bvh.h.

Referenced by scene_intersect().

#define ENTRYPOINT_SENTINEL   0x76543210

Definition at line 30 of file kernel_bvh.h.

Referenced by scene_intersect().

#define NO_EXTENDED_PRECISION

Definition at line 40 of file kernel_bvh.h.

Referenced by bvh_node_intersect().

#define TRI_NODE_SIZE   3

Definition at line 34 of file kernel_bvh.h.

Referenced by bvh_triangle_intersect(), and bvh_triangle_refine().

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Function Documentation

__device_inline void bvh_instance_pop	(	KernelGlobals *	kg,
		int	object,
		const Ray *	ray,
		float3 *	P,
		float3 *	idir,
		float *	t,
		const float	tmax
	)

Definition at line 75 of file kernel_bvh.h.

References bvh_inverse_direction(), Ray::D, FLT_MAX, len(), object_fetch_transform(), OBJECT_TRANSFORM, Ray::P, and transform_direction().

Referenced by scene_intersect().

__device_inline void bvh_instance_push	(	KernelGlobals *	kg,
		int	object,
		const Ray *	ray,
		float3 *	P,
		float3 *	idir,
		float *	t,
		const float	tmax
	)

Definition at line 58 of file kernel_bvh.h.

References bvh_inverse_direction(), Ray::D, FLT_MAX, len(), normalize_len(), object_fetch_transform(), OBJECT_INVERSE_TRANSFORM, Ray::P, transform(), and transform_direction().

Referenced by scene_intersect().

__device_inline float3 bvh_inverse_direction

(

float3

dir

)

Definition at line 45 of file kernel_bvh.h.

References copysignf, fabsf, float3::x, float3::y, and float3::z.

Referenced by bvh_instance_pop(), bvh_instance_push(), and scene_intersect().

__device_inline void bvh_node_intersect	(	KernelGlobals *	kg,
		bool *	traverseChild0,
		bool *	traverseChild1,
		bool *	closestChild1,
		int *	nodeAddr0,
		int *	nodeAddr1,
		float3	P,
		float3	idir,
		float	t,
		uint	visibility,
		int	nodeAddr
	)

Definition at line 87 of file kernel_bvh.h.

References __float_as_int(), BVH_NODE_SIZE, kernel_tex_fetch, max, max4(), min, min4(), NO_EXTENDED_PRECISION, float4::w, float3::x, float4::x, float3::y, float4::y, float3::z, and float4::z.

Referenced by scene_intersect().

__device_inline void bvh_triangle_intersect	(	KernelGlobals *	kg,
		Intersection *	isect,
		float3	P,
		float3	idir,
		uint	visibility,
		int	object,
		int	triAddr
	)

Definition at line 135 of file kernel_bvh.h.

References kernel_tex_fetch, Intersection::object, Intersection::prim, Intersection::t, TRI_NODE_SIZE, Intersection::u, Intersection::v, float4::w, float3::x, float4::x, float3::y, float4::y, float3::z, and float4::z.

Referenced by scene_intersect().

__device_inline float3 bvh_triangle_refine	(	KernelGlobals *	kg,
		const Intersection *	isect,
		const Ray *	ray
	)

Definition at line 344 of file kernel_bvh.h.

References Ray::D, D(), kernel_tex_fetch, normalize_len(), Intersection::object, object_fetch_transform(), OBJECT_INVERSE_TRANSFORM, OBJECT_TRANSFORM, P(), Ray::P, Intersection::prim, Intersection::t, transform(), transform_direction(), TRI_NODE_SIZE, float4::w, float3::x, float4::x, float3::y, float4::y, float3::z, and float4::z.

Referenced by shader_setup_from_ray().

__device_inline float3 ray_offset	(	float3	P,
		float3	Ng
	)

Definition at line 299 of file kernel_bvh.h.

References __float_as_uint(), __uint_as_float(), credits_svn_gen::e, fabsf, float3::x, float3::y, and float3::z.

Referenced by direct_emission(), kernel_path_integrate(), scene_intersect(), and shadow_blocked().

__device_inline bool scene_intersect	(	KernelGlobals *	kg,
		const Ray *	ray,
		const uint	visibility,
		Intersection *	isect
	)

Definition at line 179 of file kernel_bvh.h.

References __float_as_int(), bvh_instance_pop(), bvh_instance_push(), bvh_inverse_direction(), bvh_node_intersect(), BVH_NODE_SIZE, BVH_STACK_SIZE, bvh_triangle_intersect(), Ray::D, ENTRYPOINT_SENTINEL, kernel_assert, kernel_data, kernel_tex_fetch, Intersection::object, P(), Ray::P, PATH_RAY_SHADOW_OPAQUE, Intersection::prim, Ray::t, Intersection::t, Intersection::u, Intersection::v, float4::x, and float4::y.

Referenced by kernel_path_integrate(), and shadow_blocked().