/// <summary>
/// Determine whether an API implementation supports this feature.
/// </summary>
/// <param name="version">
/// The <see cref="KhronosVersion"/> that specifies the API version.
/// </param>
/// <param name="extensions">
/// The <see cref="KhronosApi.ExtensionsCollection"/> that specifies the API extensions registry. It can be null.
/// </param>
/// <returns>
/// It returns a <see cref="Boolean"/> that specifies whether this feature is supported by the
/// API having the version <paramref name="version"/> and the extensions registry <paramref name="extensions"/>.
/// </returns>
/// <exception cref="ArgumentNullException">
/// Exception thrown if <paramref name="version"/> is null.
/// </exception>
public bool IsSupported(KhronosVersion version, KhronosApi.ExtensionsCollection extensions)
{
if (version == null)
{
throw new ArgumentNullException(nameof(version));
}
// Feature is an API version?
if (FeatureVersion != null)
{
// API must match
// Note: no need or regex, since Api cannot be a pattern
if (version.Api != FeatureVersion.Api)
{
return(false);
}
// Profile must match, if defined
if (Profile != null && version.Profile != null && Regex.IsMatch(version.Profile, Profile) == false)
{
return(false);
}
// API version must be greater than or equal to the required version
return(version >= FeatureVersion);
}
// No API version: indeed it is an API extension
if (extensions != null)
{
// Check compatible API
// Note: regex is required since extensions can be implemented by multiple APIs
if (Regex.IsMatch(version.Api, Api) == false)
{
return(false);
}
// Last chance: extension name
return(extensions.HasExtensions(FeatureName));
}
else
{
return(false);
}
}