bool ProceduralTexture::savePNG(char *png_map)
{
std::vector<unsigned char> buffer;
//create encoder and set settings and info (optional)
LodePNG::Encoder encoder;
encoder.addText("Comment", "CubicVR Procedural Texture");
encoder.getSettings().zlibsettings.windowSize = 2048;
encoder.encode(buffer, image.empty() ? 0 : &image[0], width, height);
if(encoder.hasError())
{
Logger::log(LOG_ERROR,"[savePng] Error %d\n", encoder.getError());
return false;
}
LodePNG::saveFile(buffer, png_map);
return true;
}
void FW::exportLodePngImage(OutputStream& stream, const Image* image)
{
// Select format and convert.
FW_ASSERT(image);
const Vec2i& size = image->getSize();
bool hasAlpha = image->getFormat().hasChannel(ImageFormat::ChannelType_A);
ImageFormat::ID format = (hasAlpha) ? ImageFormat::R8_G8_B8_A8 : ImageFormat::R8_G8_B8;
Image* converted = NULL;
if (image->getFormat().getID() != format)
{
converted = new Image(size, format);
*converted = *image;
}
// Encode image.
LodePNG::Encoder encoder;
int colorType = (hasAlpha) ? 6 : 2;
encoder.getSettings().autoLeaveOutAlphaChannel = false;
encoder.getInfoRaw().color.colorType = colorType;
encoder.getInfoPng().color.colorType = colorType;
std::vector<U8> dataBuffer;
encoder.encode(dataBuffer, (U8*)((converted) ? converted : image)->getPtr(), size.x, size.y);
if (encoder.hasError())
setError("exportLodePngImage(): LodePNG error %d!", encoder.getError());
// Write to the output stream.
if (!hasError() && !dataBuffer.empty())
stream.write(&dataBuffer[0], (int)dataBuffer.size());
// Clean up.
delete converted;
}