protected override void Prepare(AssetCompilerContext context, AssetItem assetItem, string targetUrlInStorage, AssetCompilerResult result)
{
var asset = (SpriteSheetAsset)assetItem.Asset;
var gameSettingsAsset = context.GetGameSettingsAsset();
var renderingSettings = gameSettingsAsset.GetOrCreate <RenderingSettings>(context.Platform);
result.BuildSteps = new ListBuildStep();
var prereqSteps = new Queue <BuildStep>();
// create the registry containing the sprite assets texture index association
var imageToTextureUrl = new Dictionary <SpriteInfo, string>();
var colorSpace = context.GetColorSpace();
// create and add import texture commands
if (asset.Sprites != null && !asset.Packing.Enabled)
{
// sort sprites by referenced texture.
var spriteByTextures = asset.Sprites.GroupBy(x => x.Source).ToArray();
for (int i = 0; i < spriteByTextures.Length; i++)
{
// skip the texture if the file is not valid.
var textureFile = spriteByTextures[i].Key;
if (!TextureFileIsValid(textureFile))
{
continue;
}
var textureUrl = SpriteSheetAsset.BuildTextureUrl(assetItem.Location, i);
var spriteAssetArray = spriteByTextures[i].ToArray();
foreach (var spriteAsset in spriteAssetArray)
{
imageToTextureUrl[spriteAsset] = textureUrl;
}
// create an texture asset.
var textureAsset = new TextureAsset
{
Id = AssetId.Empty, // CAUTION: It is important to use an empty GUID here, as we don't want the command to be rebuilt (by default, a new asset is creating a new guid)
IsStreamable = asset.IsStreamable && asset.Type != SpriteSheetType.UI,
IsCompressed = asset.IsCompressed,
GenerateMipmaps = asset.GenerateMipmaps,
Type = new ColorTextureType
{
Alpha = asset.Alpha,
PremultiplyAlpha = asset.PremultiplyAlpha,
ColorKeyColor = asset.ColorKeyColor,
ColorKeyEnabled = asset.ColorKeyEnabled,
UseSRgbSampling = true,
}
};
// Get absolute path of asset source on disk
var assetDirectory = assetItem.FullPath.GetParent();
var assetSource = UPath.Combine(assetDirectory, spriteAssetArray[0].Source);
// add the texture build command.
var textureConvertParameters = new TextureConvertParameters(assetSource, textureAsset, context.Platform, context.GetGraphicsPlatform(assetItem.Package), renderingSettings.DefaultGraphicsProfile, gameSettingsAsset.GetOrCreate <TextureSettings>().TextureQuality, colorSpace);
var textureConvertCommand = new TextureAssetCompiler.TextureConvertCommand(textureUrl, textureConvertParameters, assetItem.Package);
var assetBuildStep = new AssetBuildStep(new AssetItem(textureUrl, textureAsset));
assetBuildStep.Add(textureConvertCommand);
prereqSteps.Enqueue(assetBuildStep);
result.BuildSteps.Add(assetBuildStep);
}
}
if (!result.HasErrors)
{
var parameters = new SpriteSheetParameters(asset, imageToTextureUrl, context.Platform, context.GetGraphicsPlatform(assetItem.Package), renderingSettings.DefaultGraphicsProfile, gameSettingsAsset.GetOrCreate <TextureSettings>().TextureQuality, colorSpace);
var assetBuildStep = new AssetBuildStep(assetItem);
assetBuildStep.Add(new SpriteSheetCommand(targetUrlInStorage, parameters, assetItem.Package));
result.BuildSteps.Add(assetBuildStep);
while (prereqSteps.Count > 0)
{
var prereq = prereqSteps.Dequeue();
BuildStep.LinkBuildSteps(prereq, assetBuildStep);
}
}
}
protected override void Compile(AssetCompilerContext context, string urlInStorage, UFile assetAbsolutePath, SpriteSheetAsset asset, AssetCompilerResult result)
{
var gameSettingsAsset = context.GetGameSettingsAsset();
result.BuildSteps = new AssetBuildStep(AssetItem);
// create the registry containing the sprite assets texture index association
var imageToTextureUrl = new Dictionary <SpriteInfo, string>();
var colorSpace = context.GetColorSpace();
// create and add import texture commands
if (asset.Sprites != null && !asset.Packing.Enabled)
{
// sort sprites by referenced texture.
var spriteByTextures = asset.Sprites.GroupBy(x => x.Source).ToArray();
for (int i = 0; i < spriteByTextures.Length; i++)
{
// skip the texture if the file is not valid.
var textureFile = spriteByTextures[i].Key;
if (!TextureFileIsValid(textureFile))
{
continue;
}
var spriteAssetArray = spriteByTextures[i].ToArray();
foreach (var spriteAsset in spriteAssetArray)
{
imageToTextureUrl[spriteAsset] = SpriteSheetAsset.BuildTextureUrl(urlInStorage, i);
}
// create an texture asset.
var textureAsset = new TextureAsset
{
Id = Guid.Empty, // CAUTION: It is important to use an empty GUID here, as we don't want the command to be rebuilt (by default, a new asset is creating a new guid)
Alpha = asset.Alpha,
Format = asset.Format,
GenerateMipmaps = asset.GenerateMipmaps,
PremultiplyAlpha = asset.PremultiplyAlpha,
ColorKeyColor = asset.ColorKeyColor,
ColorKeyEnabled = asset.ColorKeyEnabled,
ColorSpace = asset.ColorSpace,
Hint = TextureHint.Color
};
// Get absolute path of asset source on disk
var assetDirectory = assetAbsolutePath.GetParent();
var assetSource = UPath.Combine(assetDirectory, spriteAssetArray[0].Source);
// add the texture build command.
result.BuildSteps.Add(
new TextureAssetCompiler.TextureConvertCommand(
SpriteSheetAsset.BuildTextureUrl(urlInStorage, i),
new TextureConvertParameters(assetSource, textureAsset, context.Platform, context.GetGraphicsPlatform(), gameSettingsAsset.DefaultGraphicsProfile, gameSettingsAsset.TextureQuality, colorSpace)));
}
result.BuildSteps.Add(new WaitBuildStep()); // wait the textures to be imported
}
if (!result.HasErrors)
{
var parameters = new SpriteSheetParameters(asset, imageToTextureUrl, context.Platform, context.GetGraphicsPlatform(), gameSettingsAsset.DefaultGraphicsProfile, gameSettingsAsset.TextureQuality, colorSpace);
result.BuildSteps.Add(new SpriteSheetCommand(urlInStorage, parameters));
}
}
