public void ConvertIndexBuffer(RenderGeometryApiResourceDefinition resourceDefinition, Stream inputStream, Stream outputStream, int indexBufferIndex)
{
var indexBuffer = resourceDefinition.IndexBuffers[indexBufferIndex].Definition;
var indexCount = indexBuffer.Data.Size / 2;
var inIndexStream = new IndexBufferStream(
inputStream,
EndianFormat.BigEndian);
var outIndexStream = new IndexBufferStream(
outputStream,
EndianFormat.LittleEndian);
StreamUtil.Align(outputStream, 4);
indexBuffer.Data.Address = new CacheAddress(CacheAddressType.Resource, (int)outputStream.Position);
for (var j = 0; j < indexCount; j++)
{
outIndexStream.WriteIndex(inIndexStream.ReadIndex());
}
resourceDefinition.IndexBuffers[indexBufferIndex].DefinitionAddress = 0;
resourceDefinition.IndexBuffers[indexBufferIndex].RuntimeAddress = 0;
}
private static void SerializeIndexBuffer(MeshData mesh, Stream outStream)
{
var indexStream = new IndexBufferStream(outStream, IndexBufferFormat.UInt16);
foreach (var index in mesh.Indexes)
{
indexStream.WriteIndex(index);
}
StreamUtil.Align(outStream, 4);
}
public static void ConvertIndexBuffer(CacheVersion inVersion, CacheVersion outVersion, IndexBufferDefinition indexBuffer)
{
using (var outputStream = new MemoryStream())
using (var inputStream = new MemoryStream(indexBuffer.Data.Data))
{
var inIndexStream = new IndexBufferStream(inputStream, CacheVersionDetection.IsLittleEndian(inVersion) ? EndianFormat.LittleEndian : EndianFormat.BigEndian);
var outIndexStream = new IndexBufferStream(outputStream, CacheVersionDetection.IsLittleEndian(outVersion) ? EndianFormat.LittleEndian : EndianFormat.BigEndian);
var indexCount = indexBuffer.Data.Data.Length / 2;
for (var j = 0; j < indexCount; j++)
{
outIndexStream.WriteIndex(inIndexStream.ReadIndex());
}
indexBuffer.Data.Data = outputStream.ToArray();
}
}