public static byte[] packAOToDXT5A(float[] AoVals, int numXVerts)
{
byte[] inData = new byte[AoVals.Length * 4];
int c = 0;
for (int x = 0; x < numXVerts; x++)
{
for (int z = 0; z < numXVerts; z++)
{
int dstIndex = 4 * (x * numXVerts + z);
int srcIndex = (x + numXVerts * z);
float k = AoVals[srcIndex] > 1 ? 1 : AoVals[srcIndex];
inData[dstIndex + 0] = 1;
inData[dstIndex + 1] = 1;
inData[dstIndex + 2] = 1;
inData[dstIndex + 3] = (byte)(k * 255);
}
}
//for (int i = 0; i < AoVals.Length; i++)
//{
// float k = AoVals[i] > 1 ? 1 : AoVals[i];
// inData[c++] = 1;
// inData[c++] = 1;
// inData[c++] = 1;
// inData[c++] = (byte)(k * 255);
//}
byte[] outDat = null;
int outMemSize = 0;
ExportTo360.toCompressedFormat(inData, numXVerts, numXVerts, sizeof(UInt32), BDXTFormat.cDXT5A, eDXTQuality.cDXTQualityBest, ref outDat, ref outMemSize);
//endianswap this data...
int count = outMemSize;
for (int i = 0; i < count - 1; i += 2)
{
byte a = outDat[i];
outDat[i] = outDat[i + 1];
outDat[i + 1] = a;
}
//swizzle this data
inData = null;
return(outDat);
}
private void writeLightData(ref ExportSettings settings, ref ExportResults results)
{
if (!LightManager.hasTerrainLightData())
{
return;
}
DateTime n = DateTime.Now;
int width = TerrainGlobals.getTerrain().getNumXVerts();
int height = TerrainGlobals.getTerrain().getNumZVerts();
Vector3 [] lht = new Vector3[width * height];
//CLM this needs to be changed for batch exporting!
LightManager.rasterTerrainLightsToExportGrid(lht);
//convert our data to a DXT1 texture!
//CLM this is swapped all to shit... WTF!?
byte[] inData = new byte[width * height * 4];
int c = 0;
//for (int i = 0; i < lht.Length; i++)
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
//as an encoding step, divide by our overbright (2)
//now convert back to srgb
int i = x * width + y;
Vector3 v = lht[i];
v.X = (float)Math.Sqrt(BMathLib.Clamp((float)(v.X * 0.5), 0, 1));
v.Y = (float)Math.Sqrt(BMathLib.Clamp((float)(v.Y * 0.5), 0, 1));
v.Z = (float)Math.Sqrt(BMathLib.Clamp((float)(v.Z * 0.5), 0, 1));
inData[c++] = (byte)(BMathLib.Clamp(v.Z * 255 + 0.5f, 0, 255));
inData[c++] = (byte)(BMathLib.Clamp(v.Y * 255 + 0.5f, 0, 255));
inData[c++] = (byte)(BMathLib.Clamp(v.X * 255 + 0.5f, 0, 255));
inData[c++] = 0;
}
}
byte[] outDat = null;
int outMemSize = 0;
ExportTo360.toCompressedFormat(inData, width, height, sizeof(UInt32), BDXTFormat.cDXT1, settings.ExportTextureCompressionQuality, ref outDat, ref outMemSize);
//endianswap this data...
int count = outMemSize;
for (int i = 0; i < count - 1; i += 2)
{
byte a = outDat[i];
outDat[i] = outDat[i + 1];
outDat[i + 1] = a;
}
//tileswap
byte[] tempbytearray = new byte[outDat.Length];
outDat.CopyTo(tempbytearray, 0);
ExportTo360.tileCopy(ref tempbytearray, tempbytearray, (int)width, (int)height, (int)ExportTo360.eTileCopyFormats.cTCFMT_DXT1);
tempbytearray.CopyTo(outDat, 0);
tempbytearray = null;
//WRITE THE CHUNK
ECF.ECFChunkHolder chunkHolder = new ECF.ECFChunkHolder();
chunkHolder.mDataMemStream = new MemoryStream();
BinaryWriter binWriter = new BinaryWriter(chunkHolder.mDataMemStream);
//just write the DXT1 texture
binWriter.Write(Xbox_EndianSwap.endSwapI32(outMemSize));
binWriter.Write(outDat);
ExportTo360.mECF.addChunk((int)eXTD_ChunkID.cXTD_LightingChunk, chunkHolder, binWriter.BaseStream.Length);
binWriter.Close();
binWriter = null;
chunkHolder.Close();
chunkHolder = null;
results.terrainLightingMemorySize = outMemSize;
TimeSpan ts = DateTime.Now - n;
results.terrainLightingTime = ts.TotalMinutes;
lht = null;
inData = null;
outDat = null;
}
