75 lines
2.0 KiB
C++
75 lines
2.0 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
|
|
//
|
|
// Purpose:
|
|
//
|
|
//===========================================================================//
|
|
|
|
#include "tier0/platform.h"
|
|
#include "tier0/progressbar.h"
|
|
#include "bitmap/float_bm.h"
|
|
#include "mathlib/mathlib.h"
|
|
#include "tier1/strtools.h"
|
|
#include "tier2/tier2.h"
|
|
#include "tier0/memdbgon.h"
|
|
|
|
static float RangeAdjust( float x )
|
|
{
|
|
return (2*(x-.5));
|
|
}
|
|
|
|
static float saturate_and_square( float x )
|
|
{
|
|
x=max(0.f,min(1.f, x) );
|
|
return x * x;
|
|
}
|
|
|
|
#define OO_SQRT_3 0.57735025882720947f
|
|
static Vector bumpBasis[3] = {
|
|
Vector( 0.81649661064147949f, 0.0f, OO_SQRT_3 ),
|
|
Vector( -0.40824833512306213f, 0.70710676908493042f, OO_SQRT_3 ),
|
|
Vector( -0.40824821591377258f, -0.7071068286895752f, OO_SQRT_3 )
|
|
};
|
|
|
|
void main(int argc,char **argv)
|
|
{
|
|
InitCommandLineProgram( argc, argv );
|
|
if (argc != 2)
|
|
{
|
|
printf("format is 'normal2ssbump filename.tga\n");
|
|
}
|
|
else
|
|
{
|
|
ReportProgress( "reading src texture",0,0 );
|
|
FloatBitMap_t src_texture(argv[1]);
|
|
for(int y=0;y<src_texture.Height;y++)
|
|
{
|
|
ReportProgress( "Converting to ssbump format",src_texture.Height,y );
|
|
for(int x=0;x<src_texture.Width;x++)
|
|
{
|
|
Vector n( RangeAdjust( src_texture.Pixel( x,y,0 ) ),
|
|
RangeAdjust( src_texture.Pixel( x,y,1 ) ),
|
|
RangeAdjust( src_texture.Pixel( x,y,2 ) ) );
|
|
Vector dp( saturate_and_square( DotProduct( n, bumpBasis[0] ) ),
|
|
saturate_and_square( DotProduct( n, bumpBasis[1] ) ),
|
|
saturate_and_square( DotProduct( n, bumpBasis[2] ) ) );
|
|
float sum = DotProduct(dp, Vector(1,1,1));
|
|
dp *= 1.0/sum;
|
|
src_texture.Pixel(x,y,0) = dp.x;
|
|
src_texture.Pixel(x,y,1) = dp.y;
|
|
src_texture.Pixel(x,y,2) = dp.z;
|
|
}
|
|
}
|
|
char oname[1024];
|
|
strcpy(oname,argv[1]);
|
|
char *dot=Q_stristr(oname,"_normal");
|
|
if (! dot)
|
|
dot=strchr(oname,'.');
|
|
if (! dot)
|
|
dot=oname+strlen(oname);
|
|
strcpy(dot,"_ssbump.tga");
|
|
printf( "\nWriting %s\n",oname );
|
|
src_texture.WriteTGAFile( oname );
|
|
}
|
|
|
|
}
|