diff options
Diffstat (limited to 'intern/cycles/kernel/svm/displace.h')
| -rw-r--r-- | intern/cycles/kernel/svm/displace.h | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/intern/cycles/kernel/svm/displace.h b/intern/cycles/kernel/svm/displace.h index 128023263fd..230f8c73820 100644 --- a/intern/cycles/kernel/svm/displace.h +++ b/intern/cycles/kernel/svm/displace.h @@ -24,18 +24,17 @@ ccl_device_noinline void svm_node_set_bump(KernelGlobals kg, float3 normal_in = stack_valid(normal_offset) ? stack_load_float3(stack, normal_offset) : sd->N; - float3 dPdx = sd->dP.dx; - float3 dPdy = sd->dP.dy; + differential3 dP = differential_from_compact(sd->Ng, sd->dP); if (use_object_space) { object_inverse_normal_transform(kg, sd, &normal_in); - object_inverse_dir_transform(kg, sd, &dPdx); - object_inverse_dir_transform(kg, sd, &dPdy); + object_inverse_dir_transform(kg, sd, &dP.dx); + object_inverse_dir_transform(kg, sd, &dP.dy); } /* get surface tangents from normal */ - float3 Rx = cross(dPdy, normal_in); - float3 Ry = cross(normal_in, dPdx); + float3 Rx = cross(dP.dy, normal_in); + float3 Ry = cross(normal_in, dP.dx); /* get bump values */ uint c_offset, x_offset, y_offset, strength_offset; @@ -46,7 +45,7 @@ ccl_device_noinline void svm_node_set_bump(KernelGlobals kg, float h_y = stack_load_float(stack, y_offset); /* compute surface gradient and determinant */ - float det = dot(dPdx, Rx); + float det = dot(dP.dx, Rx); float3 surfgrad = (h_x - h_c) * Rx + (h_y - h_c) * Ry; float absdet = fabsf(det); |