diff options
| -rw-r--r-- | intern/cycles/kernel/geom/motion_triangle_shader.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/intern/cycles/kernel/geom/motion_triangle_shader.h b/intern/cycles/kernel/geom/motion_triangle_shader.h index 236e737b785..413a61b380a 100644 --- a/intern/cycles/kernel/geom/motion_triangle_shader.h +++ b/intern/cycles/kernel/geom/motion_triangle_shader.h @@ -68,8 +68,8 @@ ccl_device_noinline void motion_triangle_shader_setup(KernelGlobals kg, sd->N = Ng; /* Compute derivatives of P w.r.t. uv. */ #ifdef __DPDU__ - sd->dPdu = (verts[0] - verts[2]); - sd->dPdv = (verts[1] - verts[2]); + sd->dPdu = (verts[1] - verts[0]); + sd->dPdv = (verts[2] - verts[0]); #endif /* Compute smooth normal. */ if (sd->shader & SHADER_SMOOTH_NORMAL) { @@ -89,7 +89,7 @@ ccl_device_noinline void motion_triangle_shader_setup(KernelGlobals kg, float u = sd->u; float v = sd->v; float w = 1.0f - u - v; - sd->N = (u * normals[0] + v * normals[1] + w * normals[2]); + sd->N = (w * normals[0] + u * normals[1] + v * normals[2]); } } |