182     if (ry->d.x == 0.0) {  in scalar_volume_texture()
187         tx1 = (bx->min.x - ry->o.x) / ry->d.x;  in scalar_volume_texture()
188         tx2 = (bx->max.x - ry->o.x) / ry->d.x;  in scalar_volume_texture()
204     if (ry->d.y == 0.0) {  in scalar_volume_texture()
209         ty1 = (bx->min.y - ry->o.y) / ry->d.y;  in scalar_volume_texture()
210         ty2 = (bx->max.y - ry->o.y) / ry->d.y;  in scalar_volume_texture()
226     if (ry->d.z == 0.0) {  in scalar_volume_texture()
231         tz1 = (bx->min.z - ry->o.z) / ry->d.z;  in scalar_volume_texture()
232         tz2 = (bx->max.z - ry->o.z) / ry->d.z;  in scalar_volume_texture()
268         pnt.x = ((ry->o.x + (ry->d.x * t)) - bx->min.x) / bln.x;  in scalar_volume_texture()
269         pnt.y = ((ry->o.y + (ry->d.y * t)) - bx->min.y) / bln.y;  in scalar_volume_texture()
270         pnt.z = ((ry->o.z + (ry->d.z * t)) - bx->min.z) / bln.z;  in scalar_volume_texture()