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| author | Sergey Sharybin <sergey.vfx@gmail.com> | 2016-06-06 16:56:22 +0300 |
|---|---|---|
| committer | Jeroen Bakker <j.bakker@atmind.nl> | 2016-06-08 22:45:40 +0300 |
| commit | 8047aecf4bd713070646c521859fd13d3f6919db (patch) | |
| tree | b3d565a95bb12234cf8882d34216151625005768 /intern | |
| parent | 3032eb31dfcd2677b96e6653b7dba54f90509b45 (diff) | |
Fix T48571: Cycles/GPU - A lot of fireflies on SSS+Volume
Was some accumulated precision error happening.
Diffstat (limited to 'intern')
| -rw-r--r-- | intern/cycles/kernel/kernel_volume.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/intern/cycles/kernel/kernel_volume.h b/intern/cycles/kernel/kernel_volume.h index e1ea60f372e..0e313b8e88c 100644 --- a/intern/cycles/kernel/kernel_volume.h +++ b/intern/cycles/kernel/kernel_volume.h @@ -1216,6 +1216,7 @@ ccl_device void kernel_volume_stack_update_for_subsurface(KernelGlobals *kg, # else Intersection isect; int step = 0; + float3 Pend = ray->P + ray->D*ray->t; while(step < 2 * VOLUME_STACK_SIZE && scene_intersect_volume(kg, &volume_ray, @@ -1227,7 +1228,9 @@ ccl_device void kernel_volume_stack_update_for_subsurface(KernelGlobals *kg, /* Move ray forward. */ volume_ray.P = ray_offset(stack_sd->P, -stack_sd->Ng); - volume_ray.t -= stack_sd->ray_length; + if(volume_ray.t != FLT_MAX) { + volume_ray.D = normalize_len(Pend - volume_ray.P, &volume_ray.t); + } ++step; } # endif |