unsigned * read_texture(const char *name, int *width, int *height, int *components)
{
unsigned *base, *lptr;
unsigned char *rbuf, *gbuf, *bbuf, *abuf;
ImageRec *image;
int y;
image = ImageOpen(name);
if(!image)
return NULL;
(*width)=image->xsize;
(*height)=image->ysize;
(*components)=image->zsize;
base = (unsigned *)malloc(image->xsize*image->ysize*sizeof(unsigned));
rbuf = (unsigned char *)malloc(image->xsize*sizeof(unsigned char));
gbuf = (unsigned char *)malloc(image->xsize*sizeof(unsigned char));
bbuf = (unsigned char *)malloc(image->xsize*sizeof(unsigned char));
abuf = (unsigned char *)malloc(image->xsize*sizeof(unsigned char));
if(!base || !rbuf || !gbuf || !bbuf)
return NULL;
lptr = base;
for(y=0; y<image->ysize; y++)
{
if(image->zsize>=4)
{
ImageGetRow(image,rbuf,y,0);
ImageGetRow(image,gbuf,y,1);
ImageGetRow(image,bbuf,y,2);
ImageGetRow(image,abuf,y,3);
rgbatorgba(rbuf,gbuf,bbuf,abuf,(unsigned char *)lptr,image->xsize);
lptr += image->xsize;
}
else if(image->zsize==3)
{
ImageGetRow(image,rbuf,y,0);
ImageGetRow(image,gbuf,y,1);
ImageGetRow(image,bbuf,y,2);
rgbtorgba(rbuf,gbuf,bbuf,(unsigned char *)lptr,image->xsize);
lptr += image->xsize;
}
else
{
ImageGetRow(image,rbuf,y,0);
bwtorgba(rbuf,(unsigned char *)lptr,image->xsize);
lptr += image->xsize;
}
}
ImageClose(image);
free(rbuf);
free(gbuf);
free(bbuf);
free(abuf);
return (unsigned *) base;
}
/* Added by David Bourguignon, iMAGIS-GRAVIR/IMAG-INRIA */
GLubyte *
read_rgba_texture(char *name, int *width, int *height)
{
unsigned char *base, *ptr;
unsigned char *rbuf, *gbuf, *bbuf, *abuf;
ImageRec *image;
int y;
image = ImageOpen(name);
if (!image) {
return NULL;
}
(*width)=image->xsize;
(*height)=image->ysize;
if (image->zsize != 4) {
ImageClose(image);
return NULL;
}
base = (unsigned char *)malloc(image->xsize*image->ysize*sizeof(unsigned int)*4);
rbuf = (unsigned char *)malloc(image->xsize*sizeof(unsigned char));
gbuf = (unsigned char *)malloc(image->xsize*sizeof(unsigned char));
bbuf = (unsigned char *)malloc(image->xsize*sizeof(unsigned char));
abuf = (unsigned char *)malloc(image->xsize*sizeof(unsigned char));
if(!base || !rbuf || !gbuf || !bbuf || !abuf) {
if (base) free(base);
if (rbuf) free(rbuf);
if (gbuf) free(gbuf);
if (bbuf) free(bbuf);
if (abuf) free(abuf);
return NULL;
}
ptr = base;
for(y=0; y<image->ysize; y++) {
ImageGetRow(image,rbuf,y,0);
ImageGetRow(image,gbuf,y,1);
ImageGetRow(image,bbuf,y,2);
ImageGetRow(image,abuf,y,3);
rgbatorgba(rbuf,gbuf,bbuf,abuf,ptr,image->xsize);
ptr += (image->xsize * 4);
}
ImageClose(image);
free(rbuf);
free(gbuf);
free(bbuf);
free(abuf);
return (GLubyte *) base;
}