diff options
Diffstat (limited to 'source/blender/draw/intern/shaders/common_subdiv_lib.glsl')
| -rw-r--r-- | source/blender/draw/intern/shaders/common_subdiv_lib.glsl | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/source/blender/draw/intern/shaders/common_subdiv_lib.glsl b/source/blender/draw/intern/shaders/common_subdiv_lib.glsl index e6538d80111..5d71c5e4bb8 100644 --- a/source/blender/draw/intern/shaders/common_subdiv_lib.glsl +++ b/source/blender/draw/intern/shaders/common_subdiv_lib.glsl @@ -140,6 +140,13 @@ void set_vertex_nor(inout PosNorLoop vertex_data, vec3 nor) set_vertex_nor(vertex_data, nor, 0); } +void add_newell_cross_v3_v3v3(inout vec3 n, vec3 v_prev, vec3 v_curr) +{ + n[0] += (v_prev[1] - v_curr[1]) * (v_prev[2] + v_curr[2]); + n[1] += (v_prev[2] - v_curr[2]) * (v_prev[0] + v_curr[0]); + n[2] += (v_prev[0] - v_curr[0]) * (v_prev[1] + v_curr[1]); +} + #define ORIGINDEX_NONE -1 #ifdef SUBDIV_POLYGON_OFFSET |