public override IEnumerable <AssetItem> Import(UFile rawAssetPath, AssetImporterParameters importParameters)
{
var asset = new TextureAsset {
Source = rawAssetPath
};
// Creates the url to the texture
var textureUrl = new UFile(rawAssetPath.GetFileName(), null);
yield return(new AssetItem(textureUrl, asset));
}
public TextureConvertParameters(
UFile sourcePathFromDisk,
TextureAsset texture,
PlatformType platform,
GraphicsPlatform graphicsPlatform,
GraphicsProfile graphicsProfile,
TextureQuality textureQuality,
bool separateAlpha)
{
SourcePathFromDisk = sourcePathFromDisk;
Texture = texture;
Platform = platform;
GraphicsPlatform = graphicsPlatform;
GraphicsProfile = graphicsProfile;
TextureQuality = textureQuality;
SeparateAlpha = separateAlpha;
}
public static ResultStatus ImportAndSaveTextureImage(UFile sourcePath, string outputUrl, TextureAsset textureAsset, TextureConvertParameters parameters, bool separateAlpha, CancellationToken cancellationToken, Logger logger)
{
var assetManager = new AssetManager();
using (var texTool = new TextureTool())
using (var texImage = texTool.Load(sourcePath))
{
// Apply transformations
texTool.Decompress(texImage);
if (cancellationToken.IsCancellationRequested) // abort the process if cancellation is demanded
{
return(ResultStatus.Cancelled);
}
// Resize the image
if (textureAsset.IsSizeInPercentage)
{
texTool.Rescale(texImage, textureAsset.Width / 100.0f, textureAsset.Height / 100.0f, Filter.Rescaling.Lanczos3);
}
else
{
texTool.Resize(texImage, (int)textureAsset.Width, (int)textureAsset.Height, Filter.Rescaling.Lanczos3);
}
if (cancellationToken.IsCancellationRequested) // abort the process if cancellation is demanded
{
return(ResultStatus.Cancelled);
}
// texture size is now determined, we can cache it
var textureSize = new Int2(texImage.Width, texImage.Height);
// Check that the resulting texture size is supported by the targeted graphics profile
if (!TextureSizeSupported(textureAsset.Format, parameters.GraphicsPlatform, parameters.GraphicsProfile, textureSize, textureAsset.GenerateMipmaps, logger))
{
return(ResultStatus.Failed);
}
// Apply the color key
if (textureAsset.ColorKeyEnabled)
{
texTool.ColorKey(texImage, textureAsset.ColorKeyColor);
}
if (cancellationToken.IsCancellationRequested) // abort the process if cancellation is demanded
{
return(ResultStatus.Cancelled);
}
// Pre-multiply alpha
if (textureAsset.PremultiplyAlpha)
{
texTool.PreMultiplyAlpha(texImage);
}
if (cancellationToken.IsCancellationRequested) // abort the process if cancellation is demanded
{
return(ResultStatus.Cancelled);
}
// Generate mipmaps
if (textureAsset.GenerateMipmaps)
{
texTool.GenerateMipMaps(texImage, Filter.MipMapGeneration.Box);
}
if (cancellationToken.IsCancellationRequested) // abort the process if cancellation is demanded
{
return(ResultStatus.Cancelled);
}
// Convert/Compress to output format
// TODO: Change alphaFormat depending on actual image content (auto-detection)?
var outputFormat = DetermineOutputFormat(textureAsset.Format, textureAsset.Alpha, parameters.Platform, parameters.GraphicsPlatform, textureSize, texImage.Format);
texTool.Compress(texImage, outputFormat, (TextureConverter.Requests.TextureQuality)parameters.TextureQuality);
if (cancellationToken.IsCancellationRequested) // abort the process if cancellation is demanded
{
return(ResultStatus.Cancelled);
}
// Save the texture
if (separateAlpha)
{
TextureAlphaComponentSplitter.CreateAndSaveSeparateTextures(texTool, texImage, outputUrl, textureAsset.GenerateMipmaps);
}
else
{
using (var outputImage = texTool.ConvertToParadoxImage(texImage))
{
if (cancellationToken.IsCancellationRequested) // abort the process if cancellation is demanded
{
return(ResultStatus.Cancelled);
}
assetManager.Save(outputUrl, outputImage);
logger.Info("Compression successful [{3}] to ({0}x{1},{2})", outputImage.Description.Width, outputImage.Description.Height, outputImage.Description.Format, outputUrl);
}
}
}
return(ResultStatus.Successful);
}