int DeRotatorGraphics::load_texture(const char* fname, GLuint& tex_id)
{
using namespace logging::trivial;
src::severity_logger< severity_level > lg;
// initialize the texture map
glGenTextures(1, &tex_id);
glBindTexture(GL_TEXTURE_2D, tex_id);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
Fl_Shared_Image *image;
// check that the fname exists
using namespace boost::filesystem;
path p(fname);
if(exists(p)){
image = Fl_Shared_Image::get(fname);
}
else {
// fname does not exist in the current directory.
// Check whether this file exists in the Resources directory of
// a Mac bundle
#ifdef __APPLE__
unsigned short ufname[64];
for(int i=0; i<strlen(fname); i++){
ufname[i] = fname[i];
}
CFStringRef s = CFStringCreateWithCharacters(NULL, ufname, strlen(fname));
CFURLRef appUrlRef;
appUrlRef = CFBundleCopyResourceURL(CFBundleGetMainBundle(), s, NULL, NULL);
CFStringRef filePathRef = CFURLCopyPath(appUrlRef);
const char* filePath = CFStringGetCStringPtr(filePathRef, kCFStringEncodingUTF8);
path p1(filePath);
if(exists(p1)){
image = Fl_Shared_Image::get(filePath);
CFRelease(filePathRef);
CFRelease(appUrlRef);
}
else {
LOG_ERROR << "DeRotator::load_texture(): " << filePath
<< " does not exist\n";
CFRelease(filePathRef);
CFRelease(appUrlRef);
return -1;
}
#endif
}
if(image == NULL){
LOG_ERROR << "DeRotator::load_texture(): " << fname
<< " has an unknown format\n";
return -1;
}
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, image->w(), image->h(), 0,
GL_RGBA, GL_UNSIGNED_BYTE, image->data()[0]);
image->release();
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glEnable(GL_TEXTURE_2D);
return 0;
}
