diff options
| author | L. E. Segovia <leonardo.segovia@cs.uns.edu.ar> | 2018-07-18 12:14:43 +0300 |
|---|---|---|
| committer | Brecht Van Lommel <brechtvanlommel@gmail.com> | 2018-07-18 14:59:06 +0300 |
| commit | 5078b9d2d08a34ae3786100c2301ea960165e7f2 (patch) | |
| tree | 64d375c93428292fbba4f58c8ab4f097874eeefb /intern/cycles/kernel/kernel_volume.h | |
| parent | 566b319335563888e252b2186c93606ad41ff216 (diff) | |
Cycles: add Principled Hair BSDF.
This is a physically-based, easy-to-use shader for rendering hair and fur,
with controls for melanin, roughness and randomization.
Based on the paper "A Practical and Controllable Hair and Fur Model for
Production Path Tracing".
Implemented by Leonardo E. Segovia and Lukas Stockner, part of Google
Summer of Code 2018.
Diffstat (limited to 'intern/cycles/kernel/kernel_volume.h')
| -rw-r--r-- | intern/cycles/kernel/kernel_volume.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/intern/cycles/kernel/kernel_volume.h b/intern/cycles/kernel/kernel_volume.h index a7072c3ad03..d71761a97bc 100644 --- a/intern/cycles/kernel/kernel_volume.h +++ b/intern/cycles/kernel/kernel_volume.h @@ -91,7 +91,7 @@ ccl_device_inline bool volume_shader_sample(KernelGlobals *kg, ccl_device float3 volume_color_transmittance(float3 sigma, float t) { - return make_float3(expf(-sigma.x * t), expf(-sigma.y * t), expf(-sigma.z * t)); + return exp3(-sigma * t); } ccl_device float kernel_volume_channel_get(float3 value, int channel) @@ -234,7 +234,7 @@ ccl_device void kernel_volume_shadow_heterogeneous(KernelGlobals *kg, sum += (-sigma_t * (new_t - t)); if((i & 0x07) == 0) { /* ToDo: Other interval? */ - tp = *throughput * make_float3(expf(sum.x), expf(sum.y), expf(sum.z)); + tp = *throughput * exp3(sum); /* stop if nearly all light is blocked */ if(tp.x < tp_eps && tp.y < tp_eps && tp.z < tp_eps) @@ -246,7 +246,7 @@ ccl_device void kernel_volume_shadow_heterogeneous(KernelGlobals *kg, t = new_t; if(t == ray->t) { /* Update throughput in case we haven't done it above */ - tp = *throughput * make_float3(expf(sum.x), expf(sum.y), expf(sum.z)); + tp = *throughput * exp3(sum); break; } } |