diff options
| -rw-r--r-- | source/blender/render/intern/source/bake.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/source/blender/render/intern/source/bake.c b/source/blender/render/intern/source/bake.c index cf724dbcfea..977c30ff20a 100644 --- a/source/blender/render/intern/source/bake.c +++ b/source/blender/render/intern/source/bake.c @@ -223,10 +223,14 @@ static void bake_shade(void *handle, Object *ob, ShadeInput *shi, int UNUSED(qua * It needs to be done because in Blender * the normal used in the renderer points inward. It is generated * this way in calc_vertexnormals(). Should this ever change - * this negate must be removed. */ - shr.combined[0] = (-nor[0]) / 2.0f + 0.5f; - shr.combined[1] = nor[1] / 2.0f + 0.5f; - shr.combined[2] = nor[2] / 2.0f + 0.5f; + * this negate must be removed. + * + * there is also a small 1e-5f bias for precision issues. otherwise + * we randomly get 127 or 128 for neutral colors. we choose 128 + * because it is the convention flat color. * */ + shr.combined[0] = (-nor[0]) / 2.0f + 0.5f + 1e-5f; + shr.combined[1] = nor[1] / 2.0f + 0.5f + 1e-5f; + shr.combined[2] = nor[2] / 2.0f + 0.5f + 1e-5f; } else if (bs->type == RE_BAKE_TEXTURE) { copy_v3_v3(shr.combined, &shi->r); |