diff options
Diffstat (limited to 'intern/cycles/kernel/kernel_volume.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_volume.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/intern/cycles/kernel/kernel_volume.h b/intern/cycles/kernel/kernel_volume.h index 4d058763f22..ec0c3114213 100644 --- a/intern/cycles/kernel/kernel_volume.h +++ b/intern/cycles/kernel/kernel_volume.h @@ -536,12 +536,17 @@ ccl_device VolumeIntegrateResult kernel_volume_integrate_heterogeneous(KernelGlo ccl_device_noinline VolumeIntegrateResult kernel_volume_integrate(KernelGlobals *kg, PathState *state, ShaderData *sd, Ray *ray, PathRadiance *L, float3 *throughput, RNG *rng) { + /* workaround to fix correlation bug in T38710, can find better solution + * in random number generator later, for now this is done here to not impact + * performance of rendering without volumes */ + RNG tmp_rng = cmj_hash(*rng, state->rng_offset); + shader_setup_from_volume(kg, sd, ray, state->bounce); if(volume_stack_is_heterogeneous(kg, state->volume_stack)) - return kernel_volume_integrate_heterogeneous(kg, state, ray, sd, L, throughput, rng); + return kernel_volume_integrate_heterogeneous(kg, state, ray, sd, L, throughput, &tmp_rng); else - return kernel_volume_integrate_homogeneous(kg, state, ray, sd, L, throughput, rng); + return kernel_volume_integrate_homogeneous(kg, state, ray, sd, L, throughput, &tmp_rng); } /* Volume Stack |