diff options
Diffstat (limited to 'intern/cycles/kernel/geom/geom_triangle.h')
| -rw-r--r-- | intern/cycles/kernel/geom/geom_triangle.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/intern/cycles/kernel/geom/geom_triangle.h b/intern/cycles/kernel/geom/geom_triangle.h index 208338a934b..1e7fbd9c7fb 100644 --- a/intern/cycles/kernel/geom/geom_triangle.h +++ b/intern/cycles/kernel/geom/geom_triangle.h @@ -107,6 +107,20 @@ triangle_smooth_normal(KernelGlobals *kg, float3 Ng, int prim, float u, float v) return is_zero(N) ? Ng : N; } +ccl_device_inline float3 +triangle_smooth_normal_unnormalized(KernelGlobals *kg, float3 Ng, int prim, float u, float v) +{ + /* load triangle vertices */ + const uint4 tri_vindex = kernel_tex_fetch(__tri_vindex, prim); + float3 n0 = float4_to_float3(kernel_tex_fetch(__tri_vnormal, tri_vindex.x)); + float3 n1 = float4_to_float3(kernel_tex_fetch(__tri_vnormal, tri_vindex.y)); + float3 n2 = float4_to_float3(kernel_tex_fetch(__tri_vnormal, tri_vindex.z)); + + float3 N = (1.0f - u - v) * n2 + u * n0 + v * n1; + + return is_zero(N) ? Ng : N; +} + /* Ray differentials on triangle */ ccl_device_inline void triangle_dPdudv(KernelGlobals *kg, |