+ // Propagate information about needing mipmaps down the chain,
+ // breaking the phase if we notice an incompatibility.
+ //
+ // Note that we cannot do this propagation as a normal pass,
+ // because it needs information about where the phases end
+ // (we should not propagate the flag across phases).
+ if (node->needs_mipmaps) {
+ if (deps[i]->effect->num_inputs() == 0) {
+ Input *input = static_cast<Input *>(deps[i]->effect);
+ start_new_phase |= !input->can_supply_mipmaps();
+ } else {
+ deps[i]->needs_mipmaps = true;
+ }
+ }
+