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| author | Brecht Van Lommel <brechtvanlommel@gmail.com> | 2017-09-14 23:56:32 +0300 |
|---|---|---|
| committer | Brecht Van Lommel <brechtvanlommel@gmail.com> | 2017-09-20 20:38:08 +0300 |
| commit | 095a01a73a35d3af57573fc724d381bcca019f54 (patch) | |
| tree | 3f22c746d1e9ae75365ade400ca08e0ae255788e /intern/cycles/kernel/kernel_path_volume.h | |
| parent | b3afc8917cdeaa98ebfa3f2aa17e8c5a69fdb1e3 (diff) | |
Cycles: slightly improve BSDF sample stratification for path tracing.
Similar to what we did for area lights previously, this should help
preserve stratification when using multiple BSDFs in theory. Improvements
are not easily noticeable in practice though, because the number of BSDFs
is usually low. Still nice to eliminate one sampling dimension.
Diffstat (limited to 'intern/cycles/kernel/kernel_path_volume.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_path_volume.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/intern/cycles/kernel/kernel_path_volume.h b/intern/cycles/kernel/kernel_path_volume.h index f645a109ce9..3cf897ac49c 100644 --- a/intern/cycles/kernel/kernel_path_volume.h +++ b/intern/cycles/kernel/kernel_path_volume.h @@ -77,7 +77,7 @@ bool kernel_path_volume_bounce( float3 phase_omega_in; differential3 phase_domega_in; float phase_u, phase_v; - path_state_rng_2D(kg, state, PRNG_PHASE_U, &phase_u, &phase_v); + path_state_rng_2D(kg, state, PRNG_BSDF_U, &phase_u, &phase_v); int label; label = shader_volume_phase_sample(kg, sd, phase_u, phase_v, &phase_eval, @@ -155,7 +155,7 @@ ccl_device void kernel_branched_path_volume_connect_light( float3 tp = throughput; /* sample position on volume segment */ - float rphase = path_branched_rng_1D(kg, state->rng_hash, state, j, num_samples, PRNG_PHASE); + float rphase = path_branched_rng_1D(kg, state->rng_hash, state, j, num_samples, PRNG_PHASE_CHANNEL); float rscatter = path_branched_rng_1D(kg, state->rng_hash, state, j, num_samples, PRNG_SCATTER_DISTANCE); VolumeIntegrateResult result = kernel_volume_decoupled_scatter(kg, @@ -201,7 +201,7 @@ ccl_device void kernel_branched_path_volume_connect_light( float3 tp = throughput; /* sample position on volume segment */ - float rphase = path_branched_rng_1D(kg, state->rng_hash, state, j, num_samples, PRNG_PHASE); + float rphase = path_branched_rng_1D(kg, state->rng_hash, state, j, num_samples, PRNG_PHASE_CHANNEL); float rscatter = path_branched_rng_1D(kg, state->rng_hash, state, j, num_samples, PRNG_SCATTER_DISTANCE); VolumeIntegrateResult result = kernel_volume_decoupled_scatter(kg, @@ -238,7 +238,7 @@ ccl_device void kernel_branched_path_volume_connect_light( float3 tp = throughput; /* sample position on volume segment */ - float rphase = path_state_rng_1D(kg, state, PRNG_PHASE); + float rphase = path_state_rng_1D(kg, state, PRNG_PHASE_CHANNEL); float rscatter = path_state_rng_1D(kg, state, PRNG_SCATTER_DISTANCE); VolumeIntegrateResult result = kernel_volume_decoupled_scatter(kg, |