shaderBundleImpellercArguments function

List<String> shaderBundleImpellercArguments({ required Uri outputBundleFilePath, required String manifestJson, required Uri manifestDirectory, required Uri shaderLibDirectory, List<Uri> includeDirectories = const [], Uri? depfilePath, })

Builds the impellerc argument list for a shader-bundle compile.

The first two --include directories are always the manifest's own directory and impellerc's bundled shader_lib. Any includeDirectories are appended after them, so a package that ships reusable GLSL (for example framework shaders that generated bundles #include) can put its shader directory on the search path.

Exposed so users authoring custom build hooks (and tests) can inspect the exact arguments buildShaderBundleJson passes to impellerc.

Implementation

List<String> shaderBundleImpellercArguments({
  required Uri outputBundleFilePath,
  required String manifestJson,
  required Uri manifestDirectory,
  required Uri shaderLibDirectory,
  List<Uri> includeDirectories = const [],
  Uri? depfilePath,
}) {
  return [
    '--sl=${outputBundleFilePath.toFilePath()}',
    '--shader-bundle=$manifestJson',
    if (depfilePath != null) '--depfile=${depfilePath.toFilePath()}',
    '--include=${manifestDirectory.toFilePath()}',
    '--include=${shaderLibDirectory.toFilePath()}',
    for (final directory in includeDirectories)
      '--include=${directory.toFilePath()}',
  ];
}