According to http://doc.iridas.com/index.php?title=LUT_Formats
for 3D textures, the data is also RGB, and ordered in such a way
that the red coordinate changes fastest, then the green coordinate,
and finally, the blue coordinate changes slowest:
Fixes Ticket #3236.
for (k = 0; k < size; k++) {
for (j = 0; j < size; j++) {
for (i = 0; i < size; i++) {
- struct rgbvec *vec = &lut3d->lut[k][j][i];
+ struct rgbvec *vec = &lut3d->lut[i][j][k];
do {
NEXT_LINE(0);