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Differential D12888 Diff 43495 intern/cycles/kernel/geom/geom_triangle_intersect.h

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intern/cycles/kernel/geom/geom_triangle_intersect.h

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*/ */
#pragma once #pragma once
#include "kernel/kernel_random.h" #include "kernel/kernel_random.h"
CCL_NAMESPACE_BEGIN CCL_NAMESPACE_BEGIN
ccl_device_inline bool triangle_intersect(ccl_global const KernelGlobals *kg, ccl_device_inline bool triangle_intersect(KernelGlobals kg,
ccl_private Intersection *isect, ccl_private Intersection *isect,
float3 P, float3 P,
float3 dir, float3 dir,
float tmax, float tmax,
uint visibility, uint visibility,
int object, int object,
int prim_addr) int prim_addr)
{ {
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/* Special ray intersection routines for subsurface scattering. In that case we /* Special ray intersection routines for subsurface scattering. In that case we
* only want to intersect with primitives in the same object, and if case of * only want to intersect with primitives in the same object, and if case of
* multiple hits we pick a single random primitive as the intersection point. * multiple hits we pick a single random primitive as the intersection point.
* Returns whether traversal should be stopped. * Returns whether traversal should be stopped.
*/ */
#ifdef __BVH_LOCAL__ #ifdef __BVH_LOCAL__
ccl_device_inline bool triangle_intersect_local(ccl_global const KernelGlobals *kg, ccl_device_inline bool triangle_intersect_local(KernelGlobals kg,
ccl_private LocalIntersection *local_isect, ccl_private LocalIntersection *local_isect,
float3 P, float3 P,
float3 dir, float3 dir,
int object, int object,
int local_object, int local_object,
int prim_addr, int prim_addr,
float tmax, float tmax,
ccl_private uint *lcg_state, ccl_private uint *lcg_state,
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/* Reintersections uses the paper: /* Reintersections uses the paper:
* *
* Tomas Moeller * Tomas Moeller
* Fast, minimum storage ray/triangle intersection * Fast, minimum storage ray/triangle intersection
* http://www.cs.virginia.edu/~gfx/Courses/2003/ImageSynthesis/papers/Acceleration/Fast%20MinimumStorage%20RayTriangle%20Intersection.pdf * http://www.cs.virginia.edu/~gfx/Courses/2003/ImageSynthesis/papers/Acceleration/Fast%20MinimumStorage%20RayTriangle%20Intersection.pdf
*/ */
ccl_device_inline float3 triangle_refine(ccl_global const KernelGlobals *kg, ccl_device_inline float3 triangle_refine(KernelGlobals kg,
ccl_private ShaderData *sd, ccl_private ShaderData *sd,
float3 P, float3 P,
float3 D, float3 D,
float t, float t,
const int isect_object, const int isect_object,
const int isect_prim) const int isect_prim)
{ {
#ifdef __INTERSECTION_REFINE__ #ifdef __INTERSECTION_REFINE__
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#else #else
return P + D * t; return P + D * t;
#endif #endif
} }
/* Same as above, except that t is assumed to be in object space for /* Same as above, except that t is assumed to be in object space for
* instancing. * instancing.
*/ */
ccl_device_inline float3 triangle_refine_local(ccl_global const KernelGlobals *kg, ccl_device_inline float3 triangle_refine_local(KernelGlobals kg,
ccl_private ShaderData *sd, ccl_private ShaderData *sd,
float3 P, float3 P,
float3 D, float3 D,
float t, float t,
const int isect_object, const int isect_object,
const int isect_prim) const int isect_prim)
{ {
#ifdef __KERNEL_OPTIX__ #ifdef __KERNEL_OPTIX__
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