diff options
| -rw-r--r-- | modules/lightmapper_rd/lm_compute.glsl | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/modules/lightmapper_rd/lm_compute.glsl b/modules/lightmapper_rd/lm_compute.glsl index ce33f2ed1d..cccf7db96e 100644 --- a/modules/lightmapper_rd/lm_compute.glsl +++ b/modules/lightmapper_rd/lm_compute.glsl @@ -205,6 +205,14 @@ uint trace_ray(vec3 p_from, vec3 p_to return RAY_ANY; //any hit good #endif + vec3 position = p_from + dir * distance; + vec3 hit_cell = (position - params.to_cell_offset) * params.to_cell_size; + if (icell != ivec3(hit_cell)) { + // It's possible for the ray to hit a triangle in a position outside the bounds of the cell + // if it's large enough to cover multiple ones. The hit must be ignored if this is the case. + continue; + } + #if defined(MODE_UNOCCLUDE) || defined(MODE_BOUNCE_LIGHT) || defined(MODE_LIGHT_PROBES) if (!backface) { // the case of meshes having both a front and back face in the same plane is more common than |