bool ProceduralTexture::loadPNG(char *png_map)
{
LodePNG::Decoder pngDecoder;
std::vector<unsigned char> buffer;
Logger::log("Loading png file %s..\n",png_map);
LodePNG::loadFile(buffer,png_map);
Logger::log("Calling PNG decoder..\n");
pngDecoder.decode(image, buffer);
Logger::log("Checking decoder state..\n");
if(pngDecoder.hasError())
{
Logger::log("[loadTextureFromPng] Error %d\n", pngDecoder.getError());
Logger::log(" while trying to load \'%s\'\n",png_map);
return false;
}
width = pngDecoder.getWidth();
height = pngDecoder.getHeight();
Logger::log("PNG Decoder Info [ width: %d, height: %d ]..\n",width,height);
Logger::log("image size: %d\n",image.size());
Logger::log("isGreyScale: %s\n",pngDecoder.isGreyscaleType()?"true":"false");
Logger::log("isAlphaType: %s\n",pngDecoder.isAlphaType()?"true":"false");
Logger::log("Channels: %d\n",pngDecoder.getChannels());
Logger::log("BPP: %d\n",pngDecoder.getBpp());
return true;
}
// Load image from file [true = success, false otherwise]
bool PNG::load(string pathname){
std::vector<unsigned char> buffer;
LodePNG::loadFile(buffer, pathname); //load the image file with given filename
LodePNG::Decoder decoder;
decoder.inspect(buffer);
if (decoder.isGreyscaleType()){
decoder.getInfoRaw().color.colorType = 0;
decoder.getInfoRaw().color.bitDepth = 16;
// is grayscale
}
decoder.decode(image, buffer);
width = decoder.getWidth();
height = decoder.getHeight();
if(decoder.hasError())
{
return false;
}
return true;
}
static bool Load(Image *img, ImageDesc *desc, uchar *data, int data_size) {
//lodepng를 기반으로 적절히 로딩하기
SR_ASSERT(data != NULL);
SR_ASSERT(data_size > 0);
img->image_data_.clear();
LodePNG::Decoder decoder;
decoder.decode(img->image_data(), data, data_size);
if(decoder.hasError()) {
return false;
} else {
desc->width = decoder.getWidth();
desc->height = decoder.getHeight();
desc->bit_depth = decoder.getInfoPng().color.bitDepth;
desc->bpp = decoder.getBpp();
desc->color_channels = decoder.getChannels();
desc->is_grayscale = decoder.isGreyscaleType() > 0 ? true : false;
desc->is_alpha = decoder.isAlphaType() > 0 ? true : false;
return true;
}
}