d8223ffa75
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!
(cherry picked from commit c7bc44d5ad)
394 lines
11 KiB
C++
394 lines
11 KiB
C++
/*************************************************************************/
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/* editor_resource_preview.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "editor_resource_preview.h"
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#include "editor_settings.h"
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#include "os/file_access.h"
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#include "io/resource_loader.h"
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#include "io/resource_saver.h"
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#include "globals.h"
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#include "editor_scale.h"
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#include "message_queue.h"
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Ref<Texture> EditorResourcePreviewGenerator::generate_from_path(const String& p_path) {
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RES res = ResourceLoader::load(p_path);
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if (!res.is_valid())
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return res;
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return generate(res);
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}
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EditorResourcePreviewGenerator::EditorResourcePreviewGenerator() {
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}
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EditorResourcePreview* EditorResourcePreview::singleton=NULL;
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void EditorResourcePreview::_thread_func(void *ud) {
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EditorResourcePreview *erp=(EditorResourcePreview*)ud;
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erp->_thread();
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}
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void EditorResourcePreview::_preview_ready(const String& p_str,const Ref<Texture>& p_texture,ObjectID id,const StringName& p_func,const Variant& p_ud) {
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//print_line("preview is ready");
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preview_mutex->lock();
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String path = p_str;
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uint32_t hash=0;
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uint64_t modified_time=0;
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if (p_str.begins_with("ID:")) {
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hash=p_str.get_slicec(':',2).to_int();
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path="ID:"+p_str.get_slicec(':',1);
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} else {
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modified_time = FileAccess::get_modified_time(path);
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}
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Item item;
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item.order=order++;
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item.preview=p_texture;
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item.last_hash=hash;
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item.modified_time=modified_time;
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cache[path]=item;
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preview_mutex->unlock();
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MessageQueue::get_singleton()->push_call(id,p_func,path,p_texture,p_ud);
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}
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Ref<Texture> EditorResourcePreview::_generate_preview(const QueueItem& p_item,const String& cache_base) {
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String type;
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if (p_item.resource.is_valid())
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type=p_item.resource->get_type();
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else
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type=ResourceLoader::get_resource_type(p_item.path);
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//print_line("resource type is: "+type);
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if (type=="")
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return Ref<Texture>(); //could not guess type
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Ref<Texture> generated;
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for(int i=0;i<preview_generators.size();i++) {
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if (!preview_generators[i]->handles(type))
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continue;
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if (p_item.resource.is_valid()) {
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generated = preview_generators[i]->generate(p_item.resource);
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} else {
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generated = preview_generators[i]->generate_from_path(p_item.path);
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}
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break;
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}
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if (!p_item.resource.is_valid()) {
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// cache the preview in case it's a resource on disk
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if (generated.is_valid()) {
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//print_line("was generated");
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int thumbnail_size = EditorSettings::get_singleton()->get("file_dialog/thumbnail_size");
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thumbnail_size*=EDSCALE;
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//wow it generated a preview... save cache
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ResourceSaver::save(cache_base+".png",generated);
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FileAccess *f=FileAccess::open(cache_base+".txt",FileAccess::WRITE);
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f->store_line(itos(thumbnail_size));
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f->store_line(itos(FileAccess::get_modified_time(p_item.path)));
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f->store_line(FileAccess::get_md5(p_item.path));
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memdelete(f);
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} else {
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//print_line("was not generated");
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}
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}
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return generated;
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}
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void EditorResourcePreview::_thread() {
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//print_line("begin thread");
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while(!exit) {
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//print_line("wait for semaphore");
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preview_sem->wait();
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preview_mutex->lock();
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//print_line("blue team go");
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if (queue.size()) {
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QueueItem item = queue.front()->get();
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queue.pop_front();
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if (cache.has(item.path)) {
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//already has it because someone loaded it, just let it know it's ready
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if (item.resource.is_valid()) {
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item.path+=":"+itos(cache[item.path].last_hash); //keep last hash (see description of what this is in condition below)
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}
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_preview_ready(item.path,cache[item.path].preview,item.id,item.function,item.userdata);
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preview_mutex->unlock();
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} else {
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preview_mutex->unlock();
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Ref<Texture> texture;
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//print_line("pop from queue "+item.path);
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int thumbnail_size = EditorSettings::get_singleton()->get("file_dialog/thumbnail_size");
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thumbnail_size*=EDSCALE;
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if (item.resource.is_valid()){
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texture=_generate_preview(item,String());
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//adding hash to the end of path (should be ID:<objid>:<hash>) because of 5 argument limit to call_deferred
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_preview_ready(item.path+":"+itos(item.resource->hash_edited_version()),texture,item.id,item.function,item.userdata);
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} else {
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String temp_path=EditorSettings::get_singleton()->get_settings_path().plus_file("tmp");
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String cache_base = Globals::get_singleton()->globalize_path(item.path).md5_text();
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cache_base = temp_path.plus_file("resthumb-"+cache_base);
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//does not have it, try to load a cached thumbnail
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String file = cache_base+".txt";
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//print_line("cachetxt at "+file);
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FileAccess *f=FileAccess::open(file,FileAccess::READ);
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if (!f) {
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//print_line("generate because not cached");
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//generate
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texture=_generate_preview(item,cache_base);
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} else {
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uint64_t modtime = FileAccess::get_modified_time(item.path);
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int tsize = f->get_line().to_int64();
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uint64_t last_modtime = f->get_line().to_int64();
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bool cache_valid = true;
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if (tsize!=thumbnail_size) {
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cache_valid=false;
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memdelete(f);
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} else if (last_modtime!=modtime) {
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String last_md5 = f->get_line();
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String md5 = FileAccess::get_md5(item.path);
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memdelete(f);
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if (last_md5!=md5) {
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cache_valid=false;
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} else {
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//update modified time
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f=FileAccess::open(file,FileAccess::WRITE);
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f->store_line(itos(modtime));
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f->store_line(md5);
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memdelete(f);
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}
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} else {
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memdelete(f);
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}
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if (cache_valid) {
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texture = ResourceLoader::load(cache_base+".png","ImageTexture",true);
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if (!texture.is_valid()) {
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//well fuck
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cache_valid=false;
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}
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}
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if (!cache_valid) {
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texture=_generate_preview(item,cache_base);
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}
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}
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//print_line("notify of preview ready");
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_preview_ready(item.path,texture,item.id,item.function,item.userdata);
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}
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}
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} else {
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preview_mutex->unlock();
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}
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}
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}
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void EditorResourcePreview::queue_edited_resource_preview(const Ref<Resource>& p_res, Object* p_receiver, const StringName& p_receiver_func, const Variant& p_userdata) {
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ERR_FAIL_NULL(p_receiver);
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ERR_FAIL_COND(!p_res.is_valid());
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preview_mutex->lock();
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String path_id = "ID:"+itos(p_res->get_instance_ID());
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if (cache.has(path_id) && cache[path_id].last_hash==p_res->hash_edited_version()) {
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cache[path_id].order=order++;
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p_receiver->call_deferred(p_receiver_func,path_id,cache[path_id].preview,p_userdata);
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preview_mutex->unlock();
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return;
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}
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cache.erase(path_id); //erase if exists, since it will be regen
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//print_line("send to thread "+p_path);
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QueueItem item;
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item.function=p_receiver_func;
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item.id=p_receiver->get_instance_ID();
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item.resource=p_res;
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item.path=path_id;
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item.userdata=p_userdata;
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queue.push_back(item);
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preview_mutex->unlock();
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preview_sem->post();
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}
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void EditorResourcePreview::queue_resource_preview(const String& p_path, Object* p_receiver, const StringName& p_receiver_func, const Variant& p_userdata) {
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ERR_FAIL_NULL(p_receiver);
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preview_mutex->lock();
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if (cache.has(p_path)) {
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cache[p_path].order=order++;
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p_receiver->call_deferred(p_receiver_func,p_path,cache[p_path].preview,p_userdata);
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preview_mutex->unlock();
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return;
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}
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//print_line("send to thread "+p_path);
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QueueItem item;
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item.function=p_receiver_func;
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item.id=p_receiver->get_instance_ID();
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item.path=p_path;
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item.userdata=p_userdata;
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queue.push_back(item);
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preview_mutex->unlock();
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preview_sem->post();
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}
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void EditorResourcePreview::add_preview_generator(const Ref<EditorResourcePreviewGenerator>& p_generator) {
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preview_generators.push_back(p_generator);
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}
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EditorResourcePreview* EditorResourcePreview::get_singleton() {
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return singleton;
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}
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void EditorResourcePreview::_bind_methods() {
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ObjectTypeDB::bind_method("_preview_ready",&EditorResourcePreview::_preview_ready);
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ObjectTypeDB::bind_method(_MD("check_for_invalidation","path"),&EditorResourcePreview::check_for_invalidation);
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ADD_SIGNAL(MethodInfo("preview_invalidated",PropertyInfo(Variant::STRING,"path")));
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}
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void EditorResourcePreview::check_for_invalidation(const String& p_path) {
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preview_mutex->lock();
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bool call_invalidated=false;
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if (cache.has(p_path)) {
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uint64_t modified_time = FileAccess::get_modified_time(p_path);
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if (modified_time!=cache[p_path].modified_time) {
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cache.erase(p_path);
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call_invalidated=true;
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}
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}
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preview_mutex->unlock();
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if (call_invalidated) {//do outside mutex
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call_deferred("emit_signal","preview_invalidated",p_path);
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}
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}
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EditorResourcePreview::EditorResourcePreview() {
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singleton=this;
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preview_mutex = Mutex::create();
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preview_sem = Semaphore::create();
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order=0;
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exit=false;
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thread = Thread::create(_thread_func,this);
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}
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EditorResourcePreview::~EditorResourcePreview()
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{
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exit=true;
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preview_sem->post();
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Thread::wait_to_finish(thread);
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memdelete(thread);
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memdelete(preview_mutex);
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memdelete(preview_sem);
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}
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