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Cycles/EEVEE: change point light to double-sided sphere light #108506

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Weizhen Huang merged 18 commits from weizhen/blender:point_light_to_sphere_light into main 2023-06-20 12:23:12 +02:00
Conversation 2 Commits 18 Files Changed 16 +15 -9
1 changed files with 15 additions and 9 deletions
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Showing only changes of commit 19bf32dcc6 - Show all commits

24
intern/cycles/kernel/light/point.h
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@ -56,9 +56,11 @@ ccl_device_inline bool point_light_sample(const ccl_global KernelLight *klight,
ls->P = ls->Ng * klight->spot.radius + klight->co;
}
const float2 uv = map_to_sphere(ls->Ng);
ls->u = uv.x;
ls->v = uv.y;
const Transform itfm = klight->itfm;
const float2 uv = map_to_sphere(transform_direction(&itfm, ls->Ng));
/* NOTE: Return barycentric coordinates in the same notation as Embree and OptiX. */
ls->u = uv.y;
ls->v = 1.0f - uv.x - uv.y;
return true;
}
@ -104,9 +106,11 @@ ccl_device_forceinline void point_light_mnee_sample_update(const ccl_global Kern
/* PDF does not change. */
}
const float2 uv = map_to_sphere(ls->Ng);
ls->u = uv.x;
ls->v = uv.y;
const Transform itfm = klight->itfm;
const float2 uv = map_to_sphere(transform_direction(&itfm, ls->Ng));
/* NOTE: Return barycentric coordinates in the same notation as Embree and OptiX. */
ls->u = uv.y;
ls->v = 1.0f - uv.x - uv.y;
}
ccl_device_inline bool point_light_intersect(const ccl_global KernelLight *klight,
@ -137,9 +141,11 @@ ccl_device_inline bool point_light_sample_from_intersection(
ls->Ng = radius > 0 ? normalize(ls->P - klight->co) : -ray_D;
const float2 uv = map_to_sphere(ls->Ng);
ls->u = uv.x;
ls->v = uv.y;
const Transform itfm = klight->itfm;
const float2 uv = map_to_sphere(transform_direction(&itfm, ls->Ng));
/* NOTE: Return barycentric coordinates in the same notation as Embree and OptiX. */
ls->u = uv.y;
ls->v = 1.0f - uv.x - uv.y;
if (ls->t == FLT_MAX) {
ls->pdf = 0.0f;