public void Read(AssetReader reader)
{
long startPosition = reader.BaseStream.Position;
int count = reader.ReadInt32();
long headerPosition = reader.BaseStream.Position;
int entrySize = HasUnknown(reader.Version) ? 12 : 8;
SubPrograms = new ShaderSubProgram[count];
for (int i = 0; i < count; i++)
{
reader.BaseStream.Position = headerPosition + i * entrySize;
int offset = reader.ReadInt32();
int length = reader.ReadInt32();
int unknown = 0;
if (HasUnknown(reader.Version))
{
unknown = reader.ReadInt32();
}
long dataPosition = startPosition + offset;
reader.BaseStream.Position = dataPosition;
ShaderSubProgram subProgram = new ShaderSubProgram();
subProgram.Read(reader);
if (reader.BaseStream.Position != dataPosition + length)
{
throw new Exception($"Read less {reader.BaseStream.Position - dataPosition} than expected {length}");
}
SubPrograms[i] = subProgram;
}
}
public void Export(ShaderWriter writer, string header)
{
int j = 0;
while (true)
{
int index = header.IndexOf(GpuProgramIndexName, j);
if (index == -1)
{
break;
}
int length = index - j;
writer.WriteString(header, j, length);
j += length + GpuProgramIndexName.Length + 1;
int subIndex = -1;
for (int startIndex = j; j < header.Length; j++)
{
if (!char.IsDigit(header[j]))
{
string numberStr = header.Substring(startIndex, j - startIndex);
subIndex = int.Parse(numberStr);
break;
}
}
ref ShaderSubProgram subProgram = ref SubPrograms[subIndex];
// we don't know shader type so pass vertex
subProgram.Export(writer, ShaderType.Vertex);
}
private void ReadBlob(AssetLayout layout, MemoryStream memStream, uint compressedLength, uint decompressedLength, int segment)
{
byte[] decompressedBuffer = new byte[decompressedLength];
using (Lz4DecodeStream lz4Stream = new Lz4DecodeStream(memStream, compressedLength))
{
lz4Stream.ReadBuffer(decompressedBuffer, 0, decompressedBuffer.Length);
}
using (MemoryStream blobMem = new MemoryStream(decompressedBuffer))
{
using (AssetReader blobReader = new AssetReader(blobMem, EndianType.LittleEndian, layout))
{
if (segment == 0)
{
Entries = blobReader.ReadAssetArray <ShaderSubProgramEntry>();
SubPrograms = new ShaderSubProgram[Entries.Length];
}
ReadSegment(blobReader, segment);
}
}
}
public void Read(AssetReader reader)
{
long startPosition = reader.BaseStream.Position;
int count = reader.ReadInt32();
long headerPosition = reader.BaseStream.Position;
m_subPrograms = new ShaderSubProgram[count];
for (int i = 0; i < count; i++)
{
reader.BaseStream.Position = headerPosition + i * 8;
int offset = reader.ReadInt32();
int length = reader.ReadInt32();
long dataPosition = startPosition + offset;
reader.BaseStream.Position = dataPosition;
ShaderSubProgram subProgram = new ShaderSubProgram();
subProgram.Read(reader);
if (reader.BaseStream.Position != dataPosition + length)
{
throw new Exception($"Read less {reader.BaseStream.Position - dataPosition} than expected {length}");
}
m_subPrograms[i] = subProgram;
}
}
