internal ExtensionRequiredAttribute(VkExtension ext)
{
Extension = ext;
}
/// <summary>
/// Checks if the given extension is enabled on this device.
/// </summary>
/// <param name="ext"></param>
/// <returns></returns>
public bool ExtensionEnabled(VkExtension ext)
{
return(_enabledExtensions.Contains(ext));
}
public static ExtensionDescriptionAttribute Extension(VkExtension id)
{
return(_defById[(int)id]);
}
private void ReadExtension(XElement e)
{
string name = e.Attribute("name")?.Value;
Debug.Assert(name != null);
string numberStr = e.Attribute("number")?.Value;
Debug.Assert(int.TryParse(numberStr, out int number));
var requiresExtensions = e.Attribute("requires")?.Value?.Split(',');
var extension = new VkExtension(name, e.Attribute("type")?.Value, e.Attribute("comment")?.Value, number,
requiresExtensions ?? new string[0]);
foreach (var req in e.Elements("require"))
{
foreach (var en in req.Elements("enum"))
{
var cname = en.Attribute("name")?.Value;
Debug.Assert(cname != null);
var extends = en.Attribute("extends")?.Value;
var offset = en.Attribute("offset")?.Value;
var dir = en.Attribute("dir")?.Value ?? "+";
var value = en.Attribute("value")?.Value;
var bitpos = en.Attribute("bitpos")?.Value;
var comment = en.Attribute("comment")?.Value;
var valueWasString = false;
VkConstant cstType;
if (bitpos == null && value == null)
{
if (offset != null)
{
Debug.Assert(dir == "+" || dir == "-");
value = (ExtBase + (ExtBlockSize * (number - 1)) + int.Parse(offset)).ToString();
if (dir == "-")
{
value = "-(" + value + ")";
}
}
else
{
cstType = _spec.Constants[cname];
extension.ProvidedConstants.Add(cstType);
continue;
}
}
if (value != null && value.StartsWith("\"") && value.EndsWith("\""))
{
value = value.Substring(1, value.Length - 2);
valueWasString = true;
}
if (bitpos != null)
{
cstType = VkConstant.AsBitPosition(cname, comment, bitpos);
}
else
{
Debug.Assert(value != null);
cstType = VkConstant.AsValue(cname, comment, value);
}
if (extends != null)
{
var enumType = (VkEnum)_spec.TypeDefs[extends];
((IList <VkConstant>)enumType.Values).Add(cstType);
}
else if (cstType.Name.EndsWith("_EXTENSION_NAME", StringComparison.OrdinalIgnoreCase))
{
extension.Name = value;
continue;
}
else if (cstType.Name.EndsWith("_SPEC_VERSION", StringComparison.OrdinalIgnoreCase))
{
extension.Version = long.Parse(value);
continue;
}
if (!valueWasString)
{
_spec.Add(cstType);
extension.ProvidedConstants.Add(cstType);
}
}
foreach (var en in req.Elements("type"))
{
extension.ProvidedTypes.Add(_spec.TypeDefs[en.Attribute("name")?.Value]);
}
foreach (var en in req.Elements("command"))
{
extension.ProvidedTypes.Add((VkCommand)_spec.TypeDefs[en.Attribute("name")?.Value]);
}
}
_spec.Add(extension);
}