public static ShaderChannel ToShaderChannel(this ShaderChannel4 _this)
{
switch (_this)
{
case ShaderChannel4.Vertex:
return(ShaderChannel.Vertex);
case ShaderChannel4.Normal:
return(ShaderChannel.Normal);
case ShaderChannel4.Color:
return(ShaderChannel.Color);
case ShaderChannel4.UV0:
return(ShaderChannel.UV0);
case ShaderChannel4.UV1:
return(ShaderChannel.UV1);
case ShaderChannel4.Tangent:
return(ShaderChannel.Tangent);
default:
throw new Exception($"Unsupported channel type {_this}");
}
}
public static ChannelInfo GenerateChannelInfo(Version instanceVersion, StreamInfo[] origin, ShaderChannel channelType)
{
ChannelInfo instance = new ChannelInfo();
ShaderChannel4 channelv4 = channelType.ToShaderChannel4();
int streamIndex = origin.IndexOf(t => t.IsMatch(channelv4));
if (streamIndex >= 0)
{
byte offset = 0;
ref StreamInfo stream = ref origin[streamIndex];
for (ShaderChannel4 i = 0; i < channelv4; i++)
{
if (stream.IsMatch(i))
{
offset += i.ToShaderChannel().GetStride(instanceVersion);
}
}
instance.Stream = (byte)streamIndex;
instance.Offset = offset;
instance.Format = channelType.GetVertexFormat(instanceVersion).ToFormat(instanceVersion);
instance.RawDimension = channelType.GetDimention(instanceVersion);
}
public bool IsMatch(ShaderChannel4 channel)
{
return((ChannelMask & (1 << (int)channel)) != 0);
}
