diff options
Diffstat (limited to 'modules/lightmapper_rd/lm_compute.glsl')
| -rw-r--r-- | modules/lightmapper_rd/lm_compute.glsl | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/modules/lightmapper_rd/lm_compute.glsl b/modules/lightmapper_rd/lm_compute.glsl index a2a480043a..21e039396d 100644 --- a/modules/lightmapper_rd/lm_compute.glsl +++ b/modules/lightmapper_rd/lm_compute.glsl @@ -264,7 +264,16 @@ uint trace_ray(vec3 p_from, vec3 p_to, bool p_any_hit, out float r_distance, out break; } - bvec3 mask = lessThanEqual(side.xyz, min(side.yzx, side.zxy)); + // There should be only one axis updated at a time for DDA to work properly. + bvec3 mask = bvec3(true, false, false); + float m = side.x; + if (side.y < m) { + m = side.y; + mask = bvec3(false, true, false); + } + if (side.z < m) { + mask = bvec3(false, false, true); + } side += vec3(mask) * delta; icell += ivec3(vec3(mask)) * step; iters++; |