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OpenSim compatible world map. YUCK!!!

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This commit is contained in:
Siana Gearz
2011-02-24 11:31:39 +01:00
parent dcab2ae3a5
commit d2896a0947
20 changed files with 1801 additions and 1933 deletions
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indra/newview/llworldmipmap.cpp
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/**
* @file llworldmipmap.cpp
* @brief Data storage for the S3 mipmap of the entire world.
*
* $LicenseInfo:firstyear=2003&license=viewergpl$
*
* Copyright (c) 2003-2009, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#include "llviewerprecompiledheaders.h"
#include "llworldmipmap.h"
#include "llviewercontrol.h"
#include "llviewerimagelist.h"
#include "math.h" // log()
#include "llworldmap.h"
#include "llviewernetwork.h" //for isProductionGrid();
#include "hippogridmanager.h"
// Turn this on to output tile stats in the standard output
#define DEBUG_TILES_STAT 0
LLWorldMipmap::LLWorldMipmap() :
mCurrentLevel(0)
{
}
LLWorldMipmap::~LLWorldMipmap()
{
reset();
}
// Delete all sublevel maps and clean them
void LLWorldMipmap::reset()
{
for (int level = 0; level < MAP_LEVELS; level++)
{
mWorldObjectsMipMap[level].clear();
}
}
// This method should be called before each use of the mipmap (typically, before each draw), so that to let
// the boost level of unused tiles to drop to 0 (BOOST_NONE).
// Tiles that are accessed have had their boost level pushed to BOOST_MAP_VISIBLE so we can identify them.
// The result of this strategy is that if a tile is not used during 2 consecutive loops, its boost level drops to 0.
void LLWorldMipmap::equalizeBoostLevels()
{
#if DEBUG_TILES_STAT
S32 nb_missing = 0;
S32 nb_tiles = 0;
S32 nb_visible = 0;
#endif // DEBUG_TILES_STAT
// For each level
for (S32 level = 0; level < MAP_LEVELS; level++)
{
sublevel_tiles_t& level_mipmap = mWorldObjectsMipMap[level];
// For each tile
for (sublevel_tiles_t::iterator iter = level_mipmap.begin(); iter != level_mipmap.end(); iter++)
{
LLPointer<LLViewerImage> img = iter->second;
S32 current_boost_level = img->getBoostLevel();
if (current_boost_level == LLViewerImageBoostLevel::BOOST_MAP_VISIBLE)
{
// If level was BOOST_MAP_VISIBLE, the tile has been used in the last draw so keep it high
img->setBoostLevel(LLViewerImageBoostLevel::BOOST_MAP);
}
else
{
// If level was BOOST_MAP only (or anything else...), the tile wasn't used in the last draw
// so we drop its boost level to BOOST_NONE.
img->setBoostLevel(LLViewerImageBoostLevel::BOOST_NONE);
}
#if DEBUG_TILES_STAT
// Increment some stats if compile option on
nb_tiles++;
if (current_boost_level == LLViewerImageBoostLevel::BOOST_MAP_VISIBLE)
{
nb_visible++;
}
if (img->isMissingAsset())
{
nb_missing++;
}
#endif // DEBUG_TILES_STAT
}
}
#if DEBUG_TILES_STAT
LL_INFOS("World Map") << "LLWorldMipmap tile stats : total requested = " << nb_tiles << ", visible = " << nb_visible << ", missing = " << nb_missing << LL_ENDL;
#endif // DEBUG_TILES_STAT
}
// This method should be used when the mipmap is not actively used for a while, e.g., the map UI is hidden
void LLWorldMipmap::dropBoostLevels()
{
// For each level
for (S32 level = 0; level < MAP_LEVELS; level++)
{
sublevel_tiles_t& level_mipmap = mWorldObjectsMipMap[level];
// For each tile
for (sublevel_tiles_t::iterator iter = level_mipmap.begin(); iter != level_mipmap.end(); iter++)
{
LLPointer<LLViewerImage> img = iter->second;
img->setBoostLevel(LLViewerImageBoostLevel::BOOST_NONE);
}
}
}
LLPointer<LLViewerImage> LLWorldMipmap::getObjectsTile(U32 grid_x, U32 grid_y, S32 level, bool load)
{
// Check the input data
llassert(level <= MAP_LEVELS);
llassert(level >= 1);
// If the *loading* level changed, cleared the new level from "missed" tiles
// so that we get a chance to reload them
if (load && (level != mCurrentLevel))
{
cleanMissedTilesFromLevel(level);
mCurrentLevel = level;
}
// Build the region handle
U64 handle = convertGridToHandle(grid_x, grid_y);
// Check if the image is around already
sublevel_tiles_t& level_mipmap = mWorldObjectsMipMap[level-1];
sublevel_tiles_t::iterator found = level_mipmap.find(handle);
// If not there and load on, go load it
if (found == level_mipmap.end())
{
if (load)
{
// Load it
LLPointer<LLViewerImage> img;
//hack for opensims.
if(gHippoGridManager->getConnectedGrid()->getPlatform() == HippoGridInfo::PLATFORM_SECONDLIFE)
img = loadObjectsTile(grid_x, grid_y, level);
else
{
LLSimInfo* info = LLWorldMap::getInstance()->simInfoFromHandle(handle);
if(info)
{
img = gImageList.getImage(info->getMapImageID(), MIPMAP_TRUE, FALSE);
img->setBoostLevel(LLViewerImageBoostLevel::BOOST_MAP);
}
else
return NULL;
}
// </edit>
// Insert the image in the map
level_mipmap.insert(sublevel_tiles_t::value_type( handle, img ));
// Find the element again in the map (it's there now...)
found = level_mipmap.find(handle);
}
else
{
// Return with NULL if not found and we're not trying to load
return NULL;
}
}
// Get the image pointer and check if this asset is missing
LLPointer<LLViewerImage> img = found->second;
if (img->isMissingAsset())
{
// Return NULL if asset missing
return NULL;
}
else
{
// Boost the tile level so to mark it's in use *if* load on
if (load)
{
img->setBoostLevel(LLViewerImageBoostLevel::BOOST_MAP_VISIBLE);
}
return img;
}
}
LLPointer<LLViewerImage> LLWorldMipmap::loadObjectsTile(U32 grid_x, U32 grid_y, S32 level)
{
// Get the grid coordinates
std::string imageurl = gSavedSettings.getString("MapServerURL") + llformat("map-%d-%d-%d-objects.jpg", level, grid_x, grid_y);
// DO NOT COMMIT!! DEBUG ONLY!!!
// Use a local jpeg for every tile to test map speed without S3 access
//imageurl = "file://C:\\Develop\\mapserver-distribute-3\\indra\\build-vc80\\mapserver\\relwithdebinfo\\regions\\00995\\01001\\region-995-1001-prims.jpg";
// END DEBUG
//LL_INFOS("World Map") << "LLWorldMipmap::loadObjectsTile(), URL = " << imageurl << LL_ENDL;
LLPointer<LLViewerImage> img = gImageList.getImageFromUrl(imageurl);
img->setBoostLevel(LLViewerImageBoostLevel::BOOST_MAP);
// Return the smart pointer
return img;
}
// This method is used to clean up a level from tiles marked as "missing".
// The idea is to allow tiles that have been improperly marked missing to be reloaded when retraversing the level again.
// When zooming in and out rapidly, some tiles are never properly loaded and, eventually marked missing.
// This creates "blue" areas in a subresolution that never got a chance to reload if we don't clean up the level.
void LLWorldMipmap::cleanMissedTilesFromLevel(S32 level)
{
// Check the input data
llassert(level <= MAP_LEVELS);
llassert(level >= 0);
// This happens when the object is first initialized
if (level == 0)
{
return;
}
// Iterate through the subresolution level and suppress the tiles that are marked as missing
// Note: erasing in a map while iterating through it is bug prone. Using a postfix increment is mandatory here.
sublevel_tiles_t& level_mipmap = mWorldObjectsMipMap[level-1];
sublevel_tiles_t::iterator it = level_mipmap.begin();
while (it != level_mipmap.end())
{
LLPointer<LLViewerImage> img = it->second;
if (img->isMissingAsset())
{
level_mipmap.erase(it++);
}
else
{
++it;
}
}
return;
}
// static methods
// Compute the level in the world mipmap (between 1 and MAP_LEVELS, as in the URL) given the scale (size of a sim in screen pixels)
S32 LLWorldMipmap::scaleToLevel(F32 scale)
{
// If scale really small, picks up the higest level there is (lowest resolution)
if (scale <= F32_MIN)
return MAP_LEVELS;
// Compute the power of two resolution level knowing the base level
S32 level = llfloor((log(REGION_WIDTH_METERS/scale)/log(2.0f)) + 1.0f);
// Check bounds and return the value
if (level > MAP_LEVELS)
return MAP_LEVELS;
else if (level < 1)
return 1;
else
return level;
}
// Convert world coordinates to mipmap grid coordinates at a given level (between 1 and MAP_LEVELS)
void LLWorldMipmap::globalToMipmap(F64 global_x, F64 global_y, S32 level, U32* grid_x, U32* grid_y)
{
// Check the input data
llassert(level <= MAP_LEVELS);
llassert(level >= 1);
// Convert world coordinates into grid coordinates
*grid_x = lltrunc(global_x/REGION_WIDTH_METERS);
*grid_y = lltrunc(global_y/REGION_WIDTH_METERS);
// Compute the valid grid coordinates at that level of the mipmap
S32 regions_in_tile = 1 << (level - 1);
*grid_x = *grid_x - (*grid_x % regions_in_tile);
*grid_y = *grid_y - (*grid_y % regions_in_tile);
}