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GPULightmapper: increase ray triangle hit rate #53844

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Oct 15, 2021
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GPULightmapper: increase ray triangle hit rate #53844

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3 changes: 2 additions & 1 deletion modules/lightmapper_rd/lm_compute.glsl
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Original file line number Diff line number Diff line change
Expand Up @@ -94,13 +94,14 @@ params;

//check it, but also return distance and barycentric coords (for uv lookup)
bool ray_hits_triangle(vec3 from, vec3 dir, float max_dist, vec3 p0, vec3 p1, vec3 p2, out float r_distance, out vec3 r_barycentric) {
const float EPSILON = 0.00001;
const vec3 e0 = p1 - p0;
const vec3 e1 = p0 - p2;
vec3 triangle_normal = cross(e1, e0);

float n_dot_dir = dot(triangle_normal, dir);

if (abs(n_dot_dir) < 0.01) {
if (abs(n_dot_dir) < EPSILON) {
return false;
}

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