diff options
Diffstat (limited to 'source/blender/draw')
| -rw-r--r-- | source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl b/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl index e2aad867901..c47a8bdc4e9 100644 --- a/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl +++ b/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl @@ -48,6 +48,11 @@ void raytrace_screenspace_ray_finalize(inout ScreenSpaceRay ray) if (len_squared(ray.direction.xy) < 0.00001) { ray.direction.xy = vec2(0.0, 0.01); } + /* Avoid divide by 0 error in line_unit_box_intersect_dist, leading to undefined behavior + * (see T86429). */ + if (ray.direction.z == 0.0) { + ray.direction.z = 0.0001; + } float ray_len_sqr = len_squared(ray.direction.xyz); /* Make ray.direction cover one pixel. */ bool is_more_vertical = abs(ray.direction.x) < abs(ray.direction.y); |