void FeatureDemo::initEnvMap(const std::string& name)
{
mpEnvMap = createTextureFromFile(name, false, isSrgbFormat(mpDefaultFBO->getColorTexture(0)->getFormat()));
if (mpEnvMap->getType() != Texture::Type::Texture2D)
{
logError("Environment map must be a 2D texture");
mpEnvMap = nullptr;
}
}
IPXdevLFont XdevLFontSystemRAI::createFromFontFile(IPXdevLFile& file) {
assert(m_rai && " XdevLFontImpl::createFromFontFile: XdevLFontSystem not initialized.");
std::vector<std::string> fileNames;
xdl_int numberOfTextures = 1;
xdl_uint fontSize = 0;
XdevLString tmp;
file->readString(tmp);
file->readString(tmp);
// Get font size.
file->readString(tmp);
std::stringstream ss(tmp.toString());
ss >> fontSize;
// Create the font instance.
auto font = new XdevLFontRAI();
font->setFontSize(fontSize);
// Reset stringstream.
ss.str("");
ss.clear();
file->readString(tmp);
ss << tmp;
ss >> numberOfTextures;
IPXdevLTexture texture = nullptr;
auto archive = file->getArchive();
for(auto id = 0; id < numberOfTextures; id++) {
XdevLFileName filename;
file->readString(filename);
// Did the user specify a external functions to create a texture out of an image file?
if(createTextureFromFile) {
auto file = archive->open(XdevLOpenForReadOnly(), XdevLFileName(filename));
// Yes, they use that to create the texture.
texture = createTextureFromFile(file.get());
} else {
// No, let's use the lodepng project import PNG files.
std::vector<xdl_uint8> imageIn, imageOut;
auto newFile = archive->open(XdevLOpenForReadOnly(), filename);
imageIn.reserve(newFile->length());
imageIn.resize(newFile->length());
newFile->read(imageIn.data(), newFile->length());
newFile->close();
xdl_uint width, height;
xdl_int error = lodepng::decode(imageOut, width, height, imageIn);
if(error) {
std::cout << "decoder error " << error << ": " << lodepng_error_text(error) << std::endl;
return std::shared_ptr<XdevLFontRAI>();
}
// This flipping is neccessary because the library flips the picture up side down.
// Method is brute force and needs unessarly memory. It creates a vector the same size
// and starts copying which is not effective at all.
std::vector<xdl_uint8> vflipedimage(imageOut);
for(xdl_uint y = 0; y != height; y++) {
for(xdl_uint x = 0; x != width*4; x++) {
vflipedimage[x + y*width*4] = imageOut[x + (height - 1 - y)*width*4];
}
}
texture = m_rai->createTexture();
texture->init(width, height, XDEVL_RGBA, XDEVL_RGBA, vflipedimage.data());
imageOut.clear();
vflipedimage.clear();
}
if(texture == nullptr) {
XDEVL_MODULEX_ERROR(XdevLFontSystemRAI, "XdevLFontImpl::importFromFontFile: Could not create texture: " << filename << std::endl);
assert(texture && "FontTexture not created.");
}
// Setup the texture.
texture->lock();
texture->setTextureFilter(XDEVL_TEXTURE_MIN_FILTER, XDEVL_NEAREST);
texture->setTextureFilter(XDEVL_TEXTURE_MAG_FILTER, XDEVL_NEAREST);
texture->setTextureWrap(XDEVL_TEXTURE_WRAP_S, XDEVL_CLAMP_TO_EDGE);
texture->setTextureWrap(XDEVL_TEXTURE_WRAP_T, XDEVL_CLAMP_TO_EDGE);
texture->unlock();
font->addFontTexture(texture);
}
calculateGlyphInformation(font, file);
return std::shared_ptr<XdevLFontRAI>(font);
}