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| author | João Araújo <jaraujo98@gmail.com> | 2017-07-26 13:25:24 +0300 |
|---|---|---|
| committer | João Araújo <jaraujo98@gmail.com> | 2017-07-26 13:25:24 +0300 |
| commit | 59908f5eb73670c97c5bb817290a0dac99089900 (patch) | |
| tree | 709de097c1fac2ff7b172a8b50dc8a91d7b74860 /intern/cycles/kernel/geom/geom_triangle.h | |
| parent | 595f2ca2e06e07acaccc473982bde7a5ed644b50 (diff) | |
| parent | edc6bec9d60204cb81d2e7533402630b076d0d32 (diff) | |
Merge remote-tracking branch 'origin/master' into gsoc2016-improved_extrusiongsoc2016-improved_extrusion
Diffstat (limited to 'intern/cycles/kernel/geom/geom_triangle.h')
| -rw-r--r-- | intern/cycles/kernel/geom/geom_triangle.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/intern/cycles/kernel/geom/geom_triangle.h b/intern/cycles/kernel/geom/geom_triangle.h index 47778553b94..105aee8da15 100644 --- a/intern/cycles/kernel/geom/geom_triangle.h +++ b/intern/cycles/kernel/geom/geom_triangle.h @@ -76,7 +76,7 @@ ccl_device_inline void triangle_vertices(KernelGlobals *kg, int prim, float3 P[3 /* Interpolate smooth vertex normal from vertices */ -ccl_device_inline float3 triangle_smooth_normal(KernelGlobals *kg, int prim, float u, float v) +ccl_device_inline float3 triangle_smooth_normal(KernelGlobals *kg, float3 Ng, int prim, float u, float v) { /* load triangle vertices */ const uint4 tri_vindex = kernel_tex_fetch(__tri_vindex, prim); @@ -84,7 +84,9 @@ ccl_device_inline float3 triangle_smooth_normal(KernelGlobals *kg, int prim, flo 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)); - return normalize((1.0f - u - v)*n2 + u*n0 + v*n1); + float3 N = safe_normalize((1.0f - u - v)*n2 + u*n0 + v*n1); + + return is_zero(N)? Ng: N; } /* Ray differentials on triangle */ |