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/**
* @file llgltfmateriallist.cpp
*
* $LicenseInfo:firstyear=2022&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2022, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "llviewerprecompiledheaders.h"
#include "llgltfmateriallist.h"
#include "llassetstorage.h"
#include "lldispatcher.h"
#include "llfetchedgltfmaterial.h"
#include "llfilesystem.h"
#include "llsdserialize.h"
#include "lltinygltfhelper.h"
#include "llviewercontrol.h"
#include "llviewergenericmessage.h"
#include "llviewerobjectlist.h"
#include "tinygltf/tiny_gltf.h"
#include <strstream>
#include "json/reader.h"
#include "json/value.h"
namespace
{
class LLGLTFMaterialOverrideDispatchHandler : public LLDispatchHandler
{
LOG_CLASS(LLGLTFMaterialOverrideDispatchHandler);
public:
LLGLTFMaterialOverrideDispatchHandler() = default;
~LLGLTFMaterialOverrideDispatchHandler() override = default;
bool operator()(const LLDispatcher* dispatcher, const std::string& key, const LLUUID& invoice, const sparam_t& strings) override
{
// receive override data from simulator via LargeGenericMessage
// message should have:
// object_id - UUID of LLViewerObject
// side - S32 index of texture entry
// gltf_json - String of GLTF json for override data
LLSD message;
sparam_t::const_iterator it = strings.begin();
if (it != strings.end()) {
const std::string& llsdRaw = *it++;
std::istringstream llsdData(llsdRaw);
if (!LLSDSerialize::deserialize(message, llsdData, llsdRaw.length()))
{
LL_WARNS() << "LLGLTFMaterialOverrideDispatchHandler: Attempted to read parameter data into LLSD but failed:" << llsdRaw << LL_ENDL;
}
}
LLViewerObject * obj = gObjectList.findObject(message["object_id"].asUUID());
llassert(obj); // should never get an override for an object we don't know about
S32 side = message["side"].asInteger();
std::string gltf_json = message["gltf_json"].asString();
std::string warn_msg, error_msg;
LLPointer<LLGLTFMaterial> override_data = new LLGLTFMaterial();
bool success = override_data->fromJSON(gltf_json, warn_msg, error_msg);
if (!success)
{
LL_WARNS() << "failed to parse GLTF override data. errors: " << error_msg << " | warnings: " << warn_msg << LL_ENDL;
}
else
{
if (obj)
{
obj->setTEGLTFMaterialOverride(side, override_data);
}
}
return true;
}
};
LLGLTFMaterialOverrideDispatchHandler handle_gltf_override_message;
}
LLGLTFMaterialList gGLTFMaterialList;
LLGLTFMaterial* LLGLTFMaterialList::getMaterial(const LLUUID& id)
{
uuid_mat_map_t::iterator iter = mList.find(id);
if (iter == mList.end())
{
LLFetchedGLTFMaterial* mat = new LLFetchedGLTFMaterial();
mList[id] = mat;
if (!mat->mFetching)
{
// if we do multiple getAssetData calls,
// some will get distched, messing ref counter
// Todo: get rid of mat->ref()
mat->mFetching = true;
mat->ref();
gAssetStorage->getAssetData(id, LLAssetType::AT_MATERIAL,
[=](const LLUUID& id, LLAssetType::EType asset_type, void* user_data, S32 status, LLExtStat ext_status)
{
if (status)
{
LL_WARNS() << "Error getting material asset data: " << LLAssetStorage::getErrorString(status) << " (" << status << ")" << LL_ENDL;
}
LLFileSystem file(id, asset_type, LLFileSystem::READ);
auto size = file.getSize();
if (!size)
{
LL_DEBUGS() << "Zero size material." << LL_ENDL;
mat->mFetching = false;
mat->unref();
return;
}
std::vector<char> buffer;
buffer.resize(size);
file.read((U8*)&buffer[0], buffer.size());
LLSD asset;
// read file into buffer
std::istrstream str(&buffer[0], buffer.size());
if (LLSDSerialize::deserialize(asset, str, buffer.size()))
{
if (asset.has("version") && asset["version"] == "1.0")
{
if (asset.has("type") && asset["type"].asString() == "GLTF 2.0")
{
if (asset.has("data") && asset["data"].isString())
{
std::string data = asset["data"];
std::string warn_msg, error_msg;
if (!mat->fromJSON(data, warn_msg, error_msg))
{
LL_WARNS() << "Failed to decode material asset: " << LL_ENDL;
LL_WARNS() << warn_msg << LL_ENDL;
LL_WARNS() << error_msg << LL_ENDL;
}
}
}
}
}
else
{
LL_WARNS() << "Failed to deserialize material LLSD" << LL_ENDL;
}
mat->mFetching = false;
mat->unref();
}, nullptr);
}
return mat;
}
return iter->second;
}
void LLGLTFMaterialList::addMaterial(const LLUUID& id, LLFetchedGLTFMaterial* material)
{
mList[id] = material;
}
void LLGLTFMaterialList::removeMaterial(const LLUUID& id)
{
mList.erase(id);
}
void LLGLTFMaterialList::flushMaterials()
{
// Similar variant to what textures use
static const S32 MIN_UPDATE_COUNT = gSavedSettings.getS32("TextureFetchUpdateMinCount"); // default: 32
//update MIN_UPDATE_COUNT or 5% of materials, whichever is greater
U32 update_count = llmax((U32)MIN_UPDATE_COUNT, (U32)mList.size() / 20);
update_count = llmin(update_count, (U32)mList.size());
const F64 MAX_INACTIVE_TIME = 30.f;
F64 cur_time = LLTimer::getTotalSeconds();
// advance iter one past the last key we updated
uuid_mat_map_t::iterator iter = mList.find(mLastUpdateKey);
if (iter != mList.end()) {
++iter;
}
while (update_count-- > 0)
{
if (iter == mList.end())
{
iter = mList.begin();
}
LLPointer<LLFetchedGLTFMaterial> material = iter->second;
if (material->getNumRefs() == 2) // this one plus one from the list
{
if (!material->mActive
&& cur_time > material->mExpectedFlusTime)
{
iter = mList.erase(iter);
}
else
{
if (material->mActive)
{
material->mExpectedFlusTime = cur_time + MAX_INACTIVE_TIME;
material->mActive = false;
}
++iter;
}
}
else
{
material->mActive = true;
++iter;
}
}
if (iter != mList.end())
{
mLastUpdateKey = iter->first;
}
else
{
mLastUpdateKey.setNull();
}
}
// static
void LLGLTFMaterialList::registerCallbacks()
{
gGenericDispatcher.addHandler("GLTFMaterialOverride", &handle_gltf_override_message);
}
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