private int SetupVertexDeclaration(VertexBufferContent result)
{
var offset = 0;
// We always have a position channel
result.VertexDeclaration.VertexElements.Add(new VertexElement(offset, VertexElementFormat.Vector3,
VertexElementUsage.Position, 0));
offset += VertexElementFormat.Vector3.GetTypeSize();
// Optional channels
foreach (var channel in Channels)
{
VertexElementFormat format;
VertexElementUsage usage;
// Try to determine the vertex format
// TODO: Add support for additional formats as they become testable
if (channel.ElementType == typeof(Vector3))
{
format = VertexElementFormat.Vector3;
}
else if (channel.ElementType == typeof(Vector2))
{
format = VertexElementFormat.Vector2;
}
else
{
throw new InvalidContentException("Unrecognized vertex content type.");
}
// Try to determine the vertex usage
if (!VertexChannelNames.TryDecodeUsage(channel.Name, out usage))
{
throw new InvalidContentException("Unknown vertex element usage.");
}
// Try getting the usage index
var usageIndex = VertexChannelNames.DecodeUsageIndex(channel.Name);
result.VertexDeclaration.VertexElements.Add(new VertexElement(offset, format, usage, usageIndex));
offset += format.GetTypeSize();
result.VertexDeclaration.VertexStride = offset;
}
return(offset);
}
private int SetupVertexDeclaration(VertexBufferContent result)
{
var offset = 0;
// We always have a position channel
result.VertexDeclaration.VertexElements.Add(new VertexElement(offset, VertexElementFormat.Vector3,
VertexElementUsage.Position, 0));
offset += VertexElementFormat.Vector3.GetSize();
// Optional channels
foreach (var channel in Channels)
{
VertexElementFormat format;
VertexElementUsage usage;
// Try to determine the vertex format
if (channel.ElementType == typeof(Single))
{
format = VertexElementFormat.Single;
}
else if (channel.ElementType == typeof(Vector2))
{
format = VertexElementFormat.Vector2;
}
else if (channel.ElementType == typeof(Vector3))
{
format = VertexElementFormat.Vector3;
}
else if (channel.ElementType == typeof(Vector4))
{
format = VertexElementFormat.Vector4;
}
else if (channel.ElementType == typeof(Color))
{
format = VertexElementFormat.Color;
}
else if (channel.ElementType == typeof(Byte4))
{
format = VertexElementFormat.Byte4;
}
else if (channel.ElementType == typeof(Short2))
{
format = VertexElementFormat.Short2;
}
else if (channel.ElementType == typeof(Short4))
{
format = VertexElementFormat.Short4;
}
else if (channel.ElementType == typeof(NormalizedShort2))
{
format = VertexElementFormat.NormalizedShort2;
}
else if (channel.ElementType == typeof(NormalizedShort4))
{
format = VertexElementFormat.NormalizedShort4;
}
else if (channel.ElementType == typeof(HalfVector2))
{
format = VertexElementFormat.HalfVector2;
}
else if (channel.ElementType == typeof(HalfVector4))
{
format = VertexElementFormat.HalfVector4;
}
else
{
throw new InvalidContentException(string.Format("Unrecognized vertex content type: '{0}'", channel.ElementType));
}
// Try to determine the vertex usage
if (!VertexChannelNames.TryDecodeUsage(channel.Name, out usage))
{
throw new InvalidContentException(string.Format("Unknown vertex element usage for channel '{0}'", channel.Name));
}
// Try getting the usage index
var usageIndex = VertexChannelNames.DecodeUsageIndex(channel.Name);
result.VertexDeclaration.VertexElements.Add(new VertexElement(offset, format, usage, usageIndex));
offset += format.GetSize();
result.VertexDeclaration.VertexStride = offset;
}
return(offset);
}
