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limit re-queueing of texture load requests

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This commit is contained in:
David Rose 2008-12-25 00:47:10 +00:00
parent 9d1bba55aa
commit f7770ced0d
1 changed files with 26 additions and 4 deletions
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30
panda/src/display/graphicsStateGuardian.cxx
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@ -2250,12 +2250,34 @@ void GraphicsStateGuardian::
async_reload_texture(TextureContext *tc) {
nassertv(_loader != (Loader *)NULL);
int priority = 0;
if (_current_display_region != (DisplayRegion *)NULL) {
priority = _current_display_region->get_texture_reload_priority();
}
string task_name = string("reload:") + tc->get_texture()->get_name();
PT(AsyncTaskManager) task_mgr = _loader->get_task_manager();
// See if we are already loading this task.
AsyncTaskCollection orig_tasks = task_mgr->find_tasks(task_name);
int num_tasks = orig_tasks.get_num_tasks();
for (int ti = 0; ti < num_tasks; ++ti) {
AsyncTask *task = orig_tasks.get_task(ti);
if (task->is_exact_type(TextureReloadRequest::get_class_type()) &&
DCAST(TextureReloadRequest, task)->get_texture() == tc->get_texture()) {
// This texture is already queued to be reloaded. Don't queue
// it again, just make sure the priority is updated, and return.
task->set_priority(max(task->get_priority(), priority));
return;
}
}
// This texture has not yet been queued to be reloaded. Queue it up
// now.
PT(AsyncTask) request =
new TextureReloadRequest(string("reload:") + tc->get_texture()->get_name(),
new TextureReloadRequest(task_name,
_prepared_objects, tc->get_texture(),
_supports_compressed_texture);
if (_current_display_region != (DisplayRegion *)NULL) {
request->set_priority(_current_display_region->get_texture_reload_priority());
}
request->set_priority(priority);
_loader->load_async(request);
}