diff options
Diffstat (limited to 'modules/lightmapper_rd/lm_compute.glsl')
| -rw-r--r-- | modules/lightmapper_rd/lm_compute.glsl | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/modules/lightmapper_rd/lm_compute.glsl b/modules/lightmapper_rd/lm_compute.glsl index 8a9adbc5cc..eb9d817f99 100644 --- a/modules/lightmapper_rd/lm_compute.glsl +++ b/modules/lightmapper_rd/lm_compute.glsl @@ -313,13 +313,16 @@ void main() { if (lights.data[i].type == LIGHT_TYPE_SPOT) { vec3 rel = normalize(position - light_pos); - float angle = acos(dot(rel, lights.data[i].direction)); - if (angle > lights.data[i].spot_angle) { + float cos_spot_angle = lights.data[i].cos_spot_angle; + float cos_angle = dot(rel, lights.data[i].direction); + + if (cos_angle < cos_spot_angle) { continue; //invisible, dont try } - float d = clamp(angle / lights.data[i].spot_angle, 0, 1); - attenuation *= pow(1.0 - d, lights.data[i].spot_attenuation); + float scos = max(cos_angle, cos_spot_angle); + float spot_rim = max(0.0001, (1.0 - scos) / (1.0 - cos_spot_angle)); + attenuation *= 1.0 - pow(spot_rim, lights.data[i].inv_spot_attenuation); } } |