khanat-opennel-code/code/nel/tools/3d/build_interface/main.cpp

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// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// lightmap_optimizer
// ------------------
// the goal is to regroup lightmap of a level into lightmap with a higher level
#include "nel/misc/common.h"
#include "nel/misc/file.h"
#include "nel/misc/bitmap.h"
#include "nel/misc/log.h"
#include "nel/misc/path.h"
#include "nel/misc/uv.h"
#include "nel/misc/cmd_args.h"
#include <vector>
#include <string>
// ---------------------------------------------------------------------------
using namespace std;
using namespace NLMISC;
// ***************************************************************************
void outString(const string &sText)
{
printf("%s\n", sText.c_str());
}
// ***************************************************************************
// test every 4 pixels for 2 reason: DXTC and speed
const uint32 posStep= 4;
// ***************************************************************************
// Try all position to put pSrc in pDst
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bool tryAllPos(NLMISC::CBitmap *pSrc, NLMISC::CBitmap *pDst, sint32 &x, sint32 &y)
{
uint32 i, j;
CObjectVector<uint8> &rSrcPix = pSrc->getPixels();
CObjectVector<uint8> &rDstPix = pDst->getPixels();
// Recalculate real size of the source (without padding to power of 2)
uint32 nSrcWidth = pSrc->getWidth(), nSrcHeight = pSrc->getHeight();
if (nSrcWidth > pDst->getWidth() ) return false;
if (nSrcHeight > pDst->getHeight() ) return false;
// For all position test if the Src plane can be put in
for (j = 0; j <= (pDst->getHeight() - nSrcHeight); j+= posStep)
for (i = 0; i <= (pDst->getWidth() - nSrcWidth); i+= posStep)
{
x = i; y = j;
uint32 a, b;
bool bCanPut = true;
for (b = 0; b < nSrcHeight; ++b)
{
for (a = 0; a < nSrcWidth; ++a)
{
if (rDstPix[4*((x+a)+(y+b)*pDst->getWidth())+3] != 0)
{
bCanPut = false;
break;
}
}
if (bCanPut == false)
break;
}
if (bCanPut)
return true;
}
return false;
}
// ***************************************************************************
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void putPixel(uint8 *dst, uint8 *src, bool alphaTransfert)
{
dst[0] = src[0];
dst[1] = src[1];
dst[2] = src[2];
if (alphaTransfert)
dst[3] = src[3];
else
dst[3] = 255;
}
// ***************************************************************************
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bool putIn(NLMISC::CBitmap *pSrc, NLMISC::CBitmap *pDst, sint32 x, sint32 y, bool alphaTransfert=true)
{
uint8 *rSrcPix = &pSrc->getPixels()[0];
uint8 *rDstPix = &pDst->getPixels()[0];
uint wSrc= pSrc->getWidth();
uint hSrc= pSrc->getHeight();
for (uint b = 0; b < hSrc; ++b)
for (uint a = 0; a < wSrc; ++a)
{
if (rDstPix[4*((x+a)+(y+b)*pDst->getWidth())+3] != 0)
return false;
// write
putPixel(rDstPix + 4*((x+a)+(y+b)*pDst->getWidth()), rSrcPix+ 4*(a+b*pSrc->getWidth()), alphaTransfert);
}
// DXTC compression optim: fill last column block and last row block of 4 pixels with block color (don't let black or undefined)
uint wSrc4= 4*((wSrc+3)/4);
uint hSrc4= 4*((hSrc+3)/4);
// expand on W
if(wSrc<wSrc4)
{
for(uint a=wSrc;a<wSrc4;a++)
{
for(uint b=0;b<hSrc4;b++)
{
putPixel(rDstPix + 4*((x+a)+(y+b)*pDst->getWidth()), rDstPix + 4*((x+wSrc-1)+(y+b)*pDst->getWidth()), alphaTransfert);
}
}
}
// expand on H
if(hSrc<hSrc4)
{
for(uint b=hSrc;b<hSrc4;b++)
{
for(uint a=0;a<wSrc4;a++)
{
putPixel(rDstPix + 4*((x+a)+(y+b)*pDst->getWidth()), rDstPix + 4*((x+a)+(y+hSrc-1)*pDst->getWidth()), alphaTransfert);
}
}
}
return true;
}
// ***************************************************************************
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string getBaseName(const string &fullname)
{
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string basename;
string::size_type pos = fullname.rfind('_');
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if (pos != string::npos) basename = fullname.substr(0, pos+1);
return basename;
}
// ***************************************************************************
// resize the bitmap to the next power of 2 and preserve content
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void enlargeCanvas(NLMISC::CBitmap &b)
{
sint32 nNewWidth = b.getWidth(), nNewHeight = b.getHeight();
if (nNewWidth > nNewHeight)
nNewHeight *= 2;
else
nNewWidth *= 2;
NLMISC::CBitmap b2;
b2.resize (nNewWidth, nNewHeight, NLMISC::CBitmap::RGBA);
CObjectVector<uint8> &rPixelBitmap = b2.getPixels(0);
for (sint32 i = 0; i < nNewWidth*nNewHeight*4; ++i)
rPixelBitmap[i] = 0;
putIn (&b, &b2, 0, 0);
b = b2;
}
bool writeFileDependingOnFilename(const std::string &filename, CBitmap &bitmap)
{
NLMISC::COFile out;
if (out.open(filename))
{
if (toLower(filename).find(".png") != string::npos)
{
bitmap.writePNG(out, 32);
}
else
{
bitmap.writeTGA(out, 32);
}
out.close();
return true;
}
return false;
}
// ***************************************************************************
// main
// ***************************************************************************
int main(int argc, char **argv)
{
CApplicationContext applicationContext;
// Parse Command Line.
NLMISC::CCmdArgs args;
args.setDescription("Build a huge interface texture from several small elements to optimize video memory usage.");
args.addArg("s", "subset", "existing_uv_txt_name", "Build a subset of an existing interface definition while preserving the existing texture ids, to support freeing up VRAM by switching to the subset without rebuilding the entire interface.");
args.addArg("x", "extract", "", "Extract all interface elements from <output_filename> to <input_path>.");
args.addAdditionalArg("output_filename", "PNG or TGA file to generate", true);
args.addAdditionalArg("input_path", "Path that containts interfaces elements", false);
if (!args.parse(argc, argv)) return 1;
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// build as a subset of existing interface
bool buildSubset = false;
string existingUVfilename;
if (args.haveArg("s"))
{
buildSubset = true;
existingUVfilename = args.getArg("s").front();
}
// extract all interface elements
bool extractElements = args.haveArg("x");
std::vector<std::string> inputDirs = args.getAdditionalArg("input_path");
string fmtName = args.getAdditionalArg("output_filename").front();
// append PNG extension if no one provided
if (fmtName.rfind('.') == string::npos) fmtName += ".png";
if (extractElements)
{
if (inputDirs.empty())
{
outString(toString("ERROR: No input directories specified"));
return -1;
}
// name of UV file
existingUVfilename = fmtName.substr(0, fmtName.rfind('.'));
existingUVfilename += ".txt";
// Load existing UV file
CIFile iFile;
string filename = CPath::lookup(existingUVfilename, false);
if (filename.empty() || !iFile.open(filename))
{
outString(toString("ERROR: Unable to open %s", existingUVfilename.c_str()));
return -1;
}
// Load existing bitmap file
CIFile bitmapFile;
if (!bitmapFile.open(fmtName))
{
outString(toString("ERROR: Unable to open %s", fmtName.c_str()));
return -1;
}
// load bitmap
CBitmap textureBitmap;
uint8 colors = textureBitmap.load(bitmapFile);
// file already loaded in memory, close it
bitmapFile.close();
if (colors != 32)
{
outString(toString("ERROR: %s is not a RGBA bitmap", existingUVfilename.c_str()));
return -1;
}
// make sure transparent pixels are black
textureBitmap.makeTransparentPixelsBlack();
float textureWidth = (float)textureBitmap.getWidth();
float textureHeight = (float)textureBitmap.getHeight();
char bufTmp[256], tgaName[256];
string sTGAname;
float uvMinU, uvMinV, uvMaxU, uvMaxV;
while (!iFile.eof())
{
iFile.getline(bufTmp, 256);
if (sscanf(bufTmp, "%s %f %f %f %f", tgaName, &uvMinU, &uvMinV, &uvMaxU, &uvMaxV) != 5)
{
nlwarning("Can't parse %s", bufTmp);
continue;
}
float xf = uvMinU * textureWidth;
float yf = uvMinV * textureHeight;
float widthf = (uvMaxU - uvMinU) * textureWidth;
float heightf = (uvMaxV - uvMinV) * textureHeight;
uint x = (uint)xf;
uint y = (uint)yf;
uint width = (uint)widthf;
uint height = (uint)heightf;
if ((float)x != xf || (float)y != yf || (float)width != widthf || (float)height != heightf)
{
nlwarning("Wrong round");
}
if (width && height)
{
// create bitmap
CBitmap bitmap;
bitmap.resize(width, height);
bitmap.blit(textureBitmap, x, y, width, height, 0, 0);
sTGAname = inputDirs.front() + "/" + tgaName;
if (writeFileDependingOnFilename(sTGAname, bitmap))
{
outString(toString("Writing file %s", sTGAname.c_str()));
}
else
{
outString(toString("Unable to writing file %s", sTGAname.c_str()));
}
}
else
{
outString(toString("Bitmap with wrong size"));
}
}
return 0;
}
vector<string> AllMapNames;
vector<string>::iterator it = inputDirs.begin(), itEnd = inputDirs.end();
while( it != itEnd )
{
string sDir = *it++;
if( !CFile::isDirectory(sDir) )
{
outString(toString("ERROR: directory %s does not exist", sDir.c_str()));
return -1;
}
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CPath::getPathContent(sDir, false, false, true, AllMapNames);
}
vector<NLMISC::CBitmap*> AllMaps;
sint32 j;
// Load all maps
sint32 mapSize = (sint32)AllMapNames.size();
AllMaps.resize( mapSize );
for(sint i = 0; i < mapSize; ++i )
{
NLMISC::CBitmap *pBtmp = NULL;
try
{
pBtmp = new NLMISC::CBitmap;
NLMISC::CIFile inFile;
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if (!inFile.open(AllMapNames[i])) throw NLMISC::Exception(toString("Unable to open %s", AllMapNames[i].c_str()));
uint8 colors = pBtmp->load(inFile);
if (!colors) throw NLMISC::Exception(toString("%s is not a bitmap", AllMapNames[i].c_str()));
if (pBtmp->getPixelFormat() != CBitmap::RGBA)
{
outString(toString("Converting %s to RGBA (32 bits), originally using %u bits...", AllMapNames[i].c_str(), (uint)colors));
pBtmp->convertToType(CBitmap::RGBA);
}
AllMaps[i] = pBtmp;
}
catch (const NLMISC::Exception &e)
{
if (pBtmp) delete pBtmp;
outString(toString("ERROR : %s", e.what()));
return -1;
}
}
// Sort all maps by decreasing size
for (sint i = 0; i < mapSize-1; ++i)
for (j = i+1; j < mapSize; ++j)
{
NLMISC::CBitmap *pBI = AllMaps[i];
NLMISC::CBitmap *pBJ = AllMaps[j];
if ((pBI->getWidth()*pBI->getHeight()) < (pBJ->getWidth()*pBJ->getHeight()))
{
NLMISC::CBitmap *pBTmp = AllMaps[i];
AllMaps[i] = AllMaps[j];
AllMaps[j] = pBTmp;
string sTmp = AllMapNames[i];
AllMapNames[i] = AllMapNames[j];
AllMapNames[j] = sTmp;
}
}
// Place all maps into the global texture
NLMISC::CBitmap GlobalTexture, GlobalMask;
GlobalTexture.resize (1, 1, NLMISC::CBitmap::RGBA);
GlobalMask.resize (1, 1, NLMISC::CBitmap::RGBA);
CObjectVector<uint8> &rPixelBitmap = GlobalTexture.getPixels(0);
rPixelBitmap[0] = rPixelBitmap[1] = rPixelBitmap[2] = rPixelBitmap[3] = 0;
CObjectVector<uint8> &rPixelMask = GlobalMask.getPixels(0);
rPixelMask[0] = rPixelMask[1] = rPixelMask[2] = rPixelMask[3] = 0;
vector<NLMISC::CUV> UVMin, UVMax;
UVMin.resize (mapSize, NLMISC::CUV(0.0f, 0.0f));
UVMax.resize (mapSize, NLMISC::CUV(0.0f, 0.0f));
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for (sint i = 0; i < mapSize; ++i)
{
sint32 x, y;
while (!tryAllPos(AllMaps[i], &GlobalMask, x, y))
{
// Enlarge global texture
enlargeCanvas (GlobalTexture);
enlargeCanvas (GlobalMask);
}
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putIn (AllMaps[i], &GlobalTexture, x, y);
putIn (AllMaps[i], &GlobalMask, x, y, false);
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UVMin[i].U = (float)x;
UVMin[i].V = (float)y;
UVMax[i].U = (float)x+AllMaps[i]->getWidth();
UVMax[i].V = (float)y+AllMaps[i]->getHeight();
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#if 0
// Do not remove this is useful for debugging
writeFileDependingOnFilename(fmtName.substr(0, fmtName.rfind('.')) + "_txt.png", GlobalTexture);
writeFileDependingOnFilename(fmtName.substr(0, fmtName.rfind('.')) + "_msk.png", GlobalMask);
#endif
}
// Convert UV from pixel to ratio
for (sint i = 0; i < mapSize; ++i)
{
UVMin[i].U = UVMin[i].U / (float)GlobalTexture.getWidth();
UVMin[i].V = UVMin[i].V / (float)GlobalTexture.getHeight();
UVMax[i].U = UVMax[i].U / (float)GlobalTexture.getWidth();
UVMax[i].V = UVMax[i].V / (float)GlobalTexture.getHeight();
}
// make sure transparent pixels are black
GlobalTexture.makeTransparentPixelsBlack();
// Write global texture file
if (writeFileDependingOnFilename(fmtName, GlobalTexture))
{
outString(toString("Writing %s", fmtName.c_str()));
}
else
{
outString(toString("ERROR: Unable to write %s", fmtName.c_str()));
}
// Write UV text file
if( !buildSubset )
{
fmtName = fmtName.substr(0, fmtName.rfind('.'));
fmtName += ".txt";
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FILE *f = nlfopen(fmtName, "wb");
if (f != NULL)
{
for (sint i = 0; i < mapSize; ++i)
{
// get the string whitout path
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string fileName = CFile::getFilename(AllMapNames[i]);
fprintf (f, "%s %.12f %.12f %.12f %.12f\n", fileName.c_str(), UVMin[i].U, UVMin[i].V, UVMax[i].U, UVMax[i].V);
}
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fclose (f);
outString(toString("Writing UV file %s", fmtName.c_str()));
}
else
{
outString(toString("ERROR: Cannot write UV file %s", fmtName.c_str()));
}
}
else // build as a subset
{
// Load existing uv file
CIFile iFile;
string filename = CPath::lookup (existingUVfilename, false);
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if( filename.empty() || !iFile.open(filename) )
{
outString(toString("ERROR: Unable to open %s", existingUVfilename.c_str()));
return -1;
}
// Write subset UV text file
fmtName = fmtName.substr(0, fmtName.rfind('.'));
fmtName += ".txt";
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FILE *f = nlfopen(fmtName, "wb");
if (f == NULL)
{
outString(toString("ERROR: Unable to write UV file %s", fmtName.c_str()));
return -1;
}
char bufTmp[256], tgaName[256];
string sTGAname;
float uvMinU, uvMinV, uvMaxU, uvMaxV;
while (!iFile.eof())
{
iFile.getline (bufTmp, 256);
if (sscanf (bufTmp, "%s %f %f %f %f", tgaName, &uvMinU, &uvMinV, &uvMaxU, &uvMaxV) != 5)
{
nlwarning("Can't parse %s", bufTmp);
continue;
}
sTGAname = toLower(string(tgaName));
// search position of extension
std::string tgaExt = CFile::getExtension(sTGAname);
// remove extension
sTGAname = CFile::getFilenameWithoutExtension(sTGAname);
sint i;
string findTGAName;
for (i = 0; i < mapSize; ++i)
{
// get the string whitout path
findTGAName = toLower(CFile::getFilenameWithoutExtension(AllMapNames[i]));
if( findTGAName == sTGAname )
break;
}
// append extension
sTGAname += "." + tgaExt;
if( i == mapSize )
{
// not present in subset: offset existing uv's to (0,0), preserving size
fprintf (f, "%s %.12f %.12f %.12f %.12f\n", sTGAname.c_str(), 0.0f, 0.0f, uvMaxU - uvMinU, uvMaxV - uvMinV);
}
else
{
// present in subset: use new uv's
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fprintf (f, "%s %.12f %.12f %.12f %.12f\n", sTGAname.c_str(), UVMin[i].U, UVMin[i].V, UVMax[i].U, UVMax[i].V);
}
}
fclose (f);
outString(toString("Writing UV file: %s", fmtName.c_str()));
}
return 0;
}