/// <summary>
/// Reads a quantized Vector4 from the Vertex Stream.
/// It is usually used to store Vertex Color.
/// </summary>
/// <param name="buffer">The Vertex Stream buffer</param>
/// <param name="pos">Position to read from the buffer</param>
/// <param name="q">Quantization of the data</param>
/// <param name="scale">Scale of the vector</param>
/// <returns></returns>
private static RenderBase.OVector4 getVector4(byte[] buffer, int pos, vtxAttributeQuantization q, float scale)
{
switch (q)
{
case vtxAttributeQuantization.single:
return(new RenderBase.OVector4(
BitConverter.ToSingle(buffer, pos) * scale,
BitConverter.ToSingle(buffer, pos + 4) * scale,
BitConverter.ToSingle(buffer, pos + 8) * scale,
BitConverter.ToSingle(buffer, pos + 12) * scale));
case vtxAttributeQuantization.unsignedByte:
return(new RenderBase.OVector4(
buffer[pos] * scale,
buffer[pos + 1] * scale,
buffer[pos + 2] * scale,
buffer[pos + 3] * scale));
case vtxAttributeQuantization.signedByte:
return(new RenderBase.OVector4(
(sbyte)buffer[pos] * scale,
(sbyte)buffer[pos + 1] * scale,
(sbyte)buffer[pos + 2] * scale,
(sbyte)buffer[pos + 3] * scale));
case vtxAttributeQuantization.signedShort:
return(new RenderBase.OVector4(
BitConverter.ToInt16(buffer, pos) * scale,
BitConverter.ToInt16(buffer, pos + 2) * scale,
BitConverter.ToInt16(buffer, pos + 4) * scale,
BitConverter.ToInt16(buffer, pos + 6) * scale));
}
return(null);
}
/// <summary>
/// Reads a quantized Vector4 from the Vertex Stream.
/// It is usually used to store Vertex Color.
/// </summary>
/// <param name="buffer">The Vertex Stream buffer</param>
/// <param name="pos">Position to read from the buffer</param>
/// <param name="q">Quantization of the data</param>
/// <param name="scale">Scale of the vector</param>
/// <returns></returns>
private static RenderBase.OVector4 getVector4(byte[] buffer, int pos, vtxAttributeQuantization q, float scale)
{
switch (q)
{
case vtxAttributeQuantization.single:
return new RenderBase.OVector4(
BitConverter.ToSingle(buffer, pos) * scale,
BitConverter.ToSingle(buffer, pos + 4) * scale,
BitConverter.ToSingle(buffer, pos + 8) * scale,
BitConverter.ToSingle(buffer, pos + 12) * scale);
case vtxAttributeQuantization.unsignedByte:
return new RenderBase.OVector4(
buffer[pos] * scale,
buffer[pos + 1] * scale,
buffer[pos + 2] * scale,
buffer[pos + 3] * scale);
case vtxAttributeQuantization.signedByte:
return new RenderBase.OVector4(
(sbyte)buffer[pos] * scale,
(sbyte)buffer[pos + 1] * scale,
(sbyte)buffer[pos + 2] * scale,
(sbyte)buffer[pos + 3] * scale);
case vtxAttributeQuantization.signedShort:
return new RenderBase.OVector4(
BitConverter.ToInt16(buffer, pos) * scale,
BitConverter.ToInt16(buffer, pos + 2) * scale,
BitConverter.ToInt16(buffer, pos + 4) * scale,
BitConverter.ToInt16(buffer, pos + 6) * scale);
}
return null;
}
