bool TGAImage::read_tga_file(const char *filename) {
if (data) delete[] data;
data = NULL;
std::ifstream in;
in.open(filename, std::ios::binary);
if (!in.is_open()) {
std::cerr << "can't open file " << filename << "\n";
in.close();
return false;
}
TGA_Header header;
in.read((char *)&header, sizeof(header));
if (!in.good()) {
in.close();
std::cerr << "an error occured while reading the header\n";
return false;
}
width = header.width;
height = header.height;
bytespp = header.bitsperpixel >> 3;
if (width <= 0 || height <= 0 || (bytespp != GRAYSCALE && bytespp != RGB && bytespp != RGBA)) {
in.close();
std::cerr << "bad bpp (or width/height) value\n";
return false;
}
unsigned long nbytes = bytespp*width*height;
data = new unsigned char[nbytes];
if (3 == header.datatypecode || 2 == header.datatypecode) {
in.read((char *)data, nbytes);
if (!in.good()) {
in.close();
std::cerr << "an error occured while reading the data\n";
return false;
}
}
else if (10 == header.datatypecode || 11 == header.datatypecode) {
if (!load_rle_data(in)) {
in.close();
std::cerr << "an error occured while reading the data\n";
return false;
}
}
else {
in.close();
std::cerr << "unknown file format " << (int)header.datatypecode << "\n";
return false;
}
if (!(header.imagedescriptor & 0x20)) {
flip_vertically();
}
if (header.imagedescriptor & 0x10) {
flip_horizontally();
}
std::cerr << width << "x" << height << "/" << bytespp * 8 << "\n";
in.close();
return true;
}
TextureID ResourceManagerImpl::new_texture_from_file(const unicode& path, TextureFlags flags, bool garbage_collect) {
//Load the texture
auto tex = texture(new_texture(garbage_collect));
window->loader_for("texture", path.encode())->into(tex);
if((flags & TEXTURE_OPTION_FLIP_VERTICALLY) == TEXTURE_OPTION_FLIP_VERTICALLY) {
tex->flip_vertically();
}
tex->upload(
false,
(flags & TEXTURE_OPTION_DISABLE_MIPMAPS) != TEXTURE_OPTION_DISABLE_MIPMAPS,
(flags & TEXTURE_OPTION_CLAMP_TO_EDGE) != TEXTURE_OPTION_CLAMP_TO_EDGE,
(flags & TEXTURE_OPTION_NEAREST_FILTER) != TEXTURE_OPTION_NEAREST_FILTER
);
mark_texture_as_uncollected(tex->id());
return tex->id();
}
