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Clamp barycentric tests in Moller-Trumbore intersection #122

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Clamp barycentric tests in Moller-Trumbore intersection #122

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4 changes: 2 additions & 2 deletions asset/shader/opengl/apple_shadow.frag
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Original file line number Diff line number Diff line change
Expand Up @@ -39,11 +39,11 @@ bool rayTriangleIntersect(
float f = 1.0/a;
vec3 s = ray_origin - triangle.v0;
float u = f * dot(s, h);
if (u < 0.0 || u > 1.0)
if (u < -EPSILON || u > 1.0 + EPSILON)
return false;
vec3 q = cross(s, edge1);
float v = f * dot(ray_direction, q);
if (v < 0.0 || u + v > 1.0)
if (v < -EPSILON || u + v > 1.0 + EPSILON)
return false;
// At this stage we can compute t to find out where the intersection point is on the line.
float t = f * dot(edge2, q);
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