public static List <Chunk> ReadVerts(ILogger log, byte[] fileData, int offset, int endOffset)
{
var chunks = new List <Chunk>();
Chunk currentChunk = new Chunk();
Chunk previousChunk = null;
while (offset < endOffset)
{
int vifCommand = fileData[offset + 3] & 0x7f;
int numCommand = fileData[offset + 2] & 0xff;
int immCommand = DataUtil.getLEShort(fileData, offset);
switch (vifCommand)
{
case NOP_CMD:
DebugWrite(HexUtil.formatHex(offset) + " ");
DebugWriteLine("NOP");
offset += 4;
break;
case STCYCL_CMD:
DebugWrite(HexUtil.formatHex(offset) + " ");
DebugWriteLine("STCYCL: WL: " + (immCommand >> 8) + " CL: " + (immCommand & 0xFF));
offset += 4;
break;
case ITOP_CMD:
DebugWrite(HexUtil.formatHex(offset) + " ");
DebugWriteLine("ITOP: " + immCommand);
offset += 4;
break;
case STMOD_CMD:
DebugWrite(HexUtil.formatHex(offset) + " ");
DebugWriteLine("STMOD: " + immCommand);
offset += 4;
break;
case MSCAL_CMD:
DebugWrite(HexUtil.formatHex(offset) + " ");
DebugWriteLine("MSCAL: " + immCommand);
if (immCommand != 66 && immCommand != 68 && immCommand != 70)
{
DebugWriteLine("**** Microcode " + immCommand + " not supported");
}
currentChunk.mscalID = immCommand;
chunks.Add(currentChunk);
previousChunk = currentChunk;
currentChunk = new Chunk();
offset += 4;
break;
case STMASK_CMD:
DebugWrite(HexUtil.formatHex(offset) + " ");
offset += 4;
int stmask = DataUtil.getLEInt(fileData, offset);
DebugWriteLine("STMASK: " + stmask);
offset += 4;
break;
case FLUSH_CMD:
DebugWrite(HexUtil.formatHex(offset) + " ");
DebugWriteLine("FLUSH");
offset += 4;
break;
case DIRECT_CMD:
DebugWrite(HexUtil.formatHex(offset) + " ");
DebugWriteLine("DIRECT, " + immCommand * 16 + " bytes");
GIFTag[] tags = new GIFTag[immCommand];
for (int i = 0; i < immCommand; i++)
{
tags[i] = new GIFTag();
tags[i].parse(fileData, offset + 4 + i * 16);
}
currentChunk.DIRECTGifTags.AddRange(tags);
offset += 4;
offset += immCommand * 16;
break;
default:
if ((vifCommand & 0x60) == 0x60)
{
// unpack command
bool mask = ((vifCommand & 0x10) == 0x10);
int vn = (vifCommand >> 2) & 3;
int vl = vifCommand & 3;
int addr = immCommand & 0x1ff;
bool flag = (immCommand & 0x8000) == 0x8000;
bool usn = (immCommand & 0x4000) == 0x4000;
DebugWrite(HexUtil.formatHex(offset) + " ");
String debugMsg = "UNPACK: vn: " + vn + ", vl: " + vl + ", Addr: " + addr + ", num: " + numCommand;
if (flag)
{
debugMsg += ", Flag";
}
if (usn)
{
debugMsg += ", Unsigned";
}
if (mask)
{
debugMsg += ", Mask";
}
DebugWriteLine(debugMsg);
offset += 4;
if (vn == 1 && vl == 1)
{
// v2-16
// I don't know why but the UVs come after the MSCAL instruction.
if (previousChunk != null)
{
for (int uvnum = 0; uvnum < numCommand; ++uvnum)
{
short u = DataUtil.getLEShort(fileData, offset);
short v = DataUtil.getLEShort(fileData, offset + 2);
previousChunk.uvs.Add(new UV(u, v));
offset += 4;
}
}
else
{
int numBytes = numCommand * 4;
offset += numBytes;
}
}
else if (vn == 2 && vl == 1)
{
// v3-16
// each vertex is 128 bits, so num is the number of vertices
for (int vnum = 0; vnum < numCommand; ++vnum)
{
if (!usn)
{
short x = DataUtil.getLEShort(fileData, offset);
short y = DataUtil.getLEShort(fileData, offset + 2);
short z = DataUtil.getLEShort(fileData, offset + 4);
offset += 6;
Vertex vertex = new Vertex();
vertex.x = x;
vertex.y = y;
vertex.z = z;
currentChunk.vertices.Add(vertex);
}
else
{
int x = DataUtil.getLEUShort(fileData, offset);
int y = DataUtil.getLEUShort(fileData, offset + 2);
int z = DataUtil.getLEUShort(fileData, offset + 4);
offset += 6;
VLoc vloc = new VLoc();
vloc.v1 = x;
vloc.v2 = y;
vloc.v3 = z;
currentChunk.vlocs.Add(vloc);
}
}
offset = (offset + 3) & ~3;
}
else if (vn == 2 && vl == 2)
{
// v3-8
int idx = offset;
for (int vnum = 0; vnum < numCommand; ++vnum)
{
SByteVector vec = new SByteVector();
vec.x = (sbyte)fileData[idx++];
vec.y = (sbyte)fileData[idx++];
vec.z = (sbyte)fileData[idx++];
currentChunk.normals.Add(vec);
}
int numBytes = ((numCommand * 3) + 3) & ~3;
offset += numBytes;
}
else if (vn == 3 && vl == 0)
{
// v4-32
log.LogLine("v4-32 data, " + numCommand + (numCommand == 1 ? " entry" : " entries") + ", addr=" + addr);
if (1 == numCommand)
{
currentChunk.gifTag0 = new GIFTag();
currentChunk.gifTag0.parse(fileData, offset);
DebugWrite(HexUtil.formatHex(offset) + " ");
DebugWriteLine("GifTag: " + currentChunk.gifTag0.ToString());
}
else if (2 == numCommand)
{
currentChunk.gifTag0 = new GIFTag();
currentChunk.gifTag0.parse(fileData, offset);
currentChunk.gifTag1 = new GIFTag();
currentChunk.gifTag1.parse(fileData, offset + 16);
DebugWrite(HexUtil.formatHex(offset) + " ");
DebugWriteLine("GifTag0: " + currentChunk.gifTag0.ToString());
DebugWrite(HexUtil.formatHex(offset) + " ");
DebugWriteLine("GifTag1: " + currentChunk.gifTag1.ToString());
}
else
{
log.LogLine("unknown number of gif commands.");
}
int numBytes = numCommand * 16;
offset += numBytes;
}
else if (vn == 3 && vl == 1)
{
// v4-16
log.LogLine("v4-16 data, " + numCommand + (numCommand == 1 ? " entry" : " entries") + ", addr=" + addr);
int numShorts = numCommand * 4;
if (usn)
{
currentChunk.extraVlocs = new ushort[numShorts];
for (int i = 0; i < numCommand; ++i)
{
currentChunk.extraVlocs[i * 4] = DataUtil.getLEUShort(fileData, offset + i * 8);
currentChunk.extraVlocs[i * 4 + 1] = DataUtil.getLEUShort(fileData, offset + i * 8 + 2);
currentChunk.extraVlocs[i * 4 + 2] = DataUtil.getLEUShort(fileData, offset + i * 8 + 4);
currentChunk.extraVlocs[i * 4 + 3] = DataUtil.getLEUShort(fileData, offset + i * 8 + 6);
}
}
else
{
log.LogLine("Unsupported tag");
}
offset += numShorts * 2;
}
else if (vn == 3 && vl == 2)
{
// v4-8
int numBytes = numCommand * 4;
currentChunk.vertexWeights = new List <VertexWeight>();
int curVertex = 0;
for (int i = 0; i < numCommand; ++i)
{
VertexWeight vw = new VertexWeight();
vw.startVertex = curVertex;
vw.bone1 = fileData[offset++] / 4;
vw.boneWeight1 = fileData[offset++];
vw.bone2 = fileData[offset++];
if (vw.bone2 == 0xFF)
{
// Single bone
vw.boneWeight2 = 0;
int count = fileData[offset++];
curVertex += count;
}
else
{
vw.bone2 /= 4;
vw.boneWeight2 = fileData[offset++];
++curVertex;
if (vw.boneWeight1 + vw.boneWeight2 < 255)
{
++i;
vw.bone3 = fileData[offset++] / 4;
vw.boneWeight3 = fileData[offset++];
vw.bone4 = fileData[offset++];
int bw4 = fileData[offset++];
if (vw.bone4 != 255)
{
vw.bone4 /= 4;
vw.boneWeight4 = bw4;
}
}
}
vw.endVertex = curVertex - 1;
currentChunk.vertexWeights.Add(vw);
}
}
else
{
DebugWriteLine("Unknown vnvl combination: vn=" + vn + ", vl=" + vl);
offset = endOffset;
}
}
else
{
DebugWriteLine("Unknown command: " + vifCommand);
offset = endOffset;
}
break;
}
}
return(chunks);
}
public override String ToString()
{
return(HexUtil.formatHexUShort(v1) + ", " + HexUtil.formatHexUShort(v2) + ", " + HexUtil.formatHexUShort(v3));
}
