olegpz
/
ericw-tools
mirror of https://github.com/ericwa/ericw-tools.git
0
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

light: guard against acos returning nan due to fp error in CalcualateVertexNormals

This commit is contained in:
Eric Wasylishen 2016-04-11 01:49:02 -06:00
parent ed6dfbaf76
commit c6d8aff03b
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
light/light.cc
View File

@ -442,7 +442,8 @@ CalcualateVertexNormals(const bsp2_t *bsp)
vec3_t f2_norm;
Face_Normal(bsp, f2, f2_norm);
const vec_t angle = acos(DotProduct(f_norm, f2_norm));
const vec_t cosangle = DotProduct(f_norm, f2_norm);
const vec_t angle = acos(qmax(qmin(1.0f, cosangle), 0.0f));
const vec_t max_angle = DEG2RAD(qmin(f_smoothangle, f2_smoothangle));
// check the angle between the face normals