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Add a function to debug mipmaps

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This commit is contained in:
Frederic Bouvier
2010-10-25 21:51:27 +02:00
parent c7dd293e01
commit bda5890f17
1 changed files with 38 additions and 0 deletions
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38
simgear/scene/material/mipmap.cxx
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@@ -22,6 +22,7 @@
#include "EffectBuilder.hxx"
#include <limits>
#include <iomanip>
#include <osg/Image>
#include <osg/Vec4>
@@ -226,6 +227,42 @@ osg::Vec4 computeColor( osg::Vec4 colors[2][2][2], bool colorValid[2][2][2], Mip
return result;
}
void dumpMipmap( std::string n, int s, int t, int r, int c, unsigned char *d, const osg::Image::MipmapDataType &o )
{
std::ofstream ofs( (n + ".dump").c_str() );
for ( int i = 0; i < o.size()+1; ++i )
{
ofs << s << " " << t << " " << r << std::endl;
unsigned int offset = 0;
if ( i > 0 )
offset = o[i-1];
unsigned char *p = &d[offset];
for ( int l = 0; l < r; ++l )
{
for ( int k = 0; k < t; ++k )
{
for ( int j = 0; j < s; ++j )
{
ofs << "(";
for ( int m = 0; m < c; ++m )
{
if ( m != 0 )
ofs << " ";
ofs << std::setw(3) << (unsigned int)*p++;
}
ofs << ")";
}
ofs << std::endl;
}
ofs << std::endl;
}
ofs << std::endl;
s >>= 1; if ( s == 0 ) s = 1;
t >>= 1; if ( t == 0 ) t = 1;
r >>= 1; if ( r == 0 ) r = 1;
}
}
osg::Image* computeMipmap( osg::Image* image, MipMapTuple attrs )
{
bool computeMipmap = false;
@@ -349,6 +386,7 @@ osg::Image* computeMipmap( osg::Image* image, MipMapTuple attrs )
t = nt;
r = nr;
}
//dumpMipmap( image->getFileName(), image->s(), image->t(), image->r(), osg::Image::computeNumComponents(image->getPixelFormat()), data, mipmapOffsets );
mipmaps->setImage( image->s(), image->t(), image->r(),
image->getInternalTextureFormat(), image->getPixelFormat(),
image->getDataType(), data, osg::Image::USE_NEW_DELETE, image->getPacking() );