public byte[] WriteMipMap(DdsMipMap mipMap, DdsSaveConfig saveConfig)
{
byte[] outputData;
if (saveConfig.FileFormat >= FileFormat.DXT1 && saveConfig.FileFormat <= FileFormat.DXT5)
{
outputData = DdsSquish.CompressImage(mipMap.MipMap, mipMap.Width, mipMap.Height, saveConfig.GetSquishFlags(), null);
}
else
{
int pixelWidth = (int)header.PitchOrLinearSize / Width;
int mipPitch = pixelWidth * mipMap.Width;
outputData = new byte[mipPitch * mipMap.Height];
outputData.Initialize();
for (int i = 0; i < mipMap.MipMap.Length; i += 4)
{
uint pixelData = 0;
byte R = mipMap.MipMap[i + 0];
byte G = mipMap.MipMap[i + 1];
byte B = mipMap.MipMap[i + 2];
byte A = mipMap.MipMap[i + 3];
switch (saveConfig.FileFormat)
{
case FileFormat.A8R8G8B8: {
pixelData = ((uint)A << 24) |
((uint)R << 16) |
((uint)G << 8) |
((uint)B << 0);
break;
}
case FileFormat.X8R8G8B8: {
pixelData = ((uint)R << 16) |
((uint)G << 8) |
((uint)B << 0);
break;
}
case FileFormat.A8B8G8R8: {
pixelData = ((uint)A << 24) |
((uint)B << 16) |
((uint)G << 8) |
((uint)R << 0);
break;
}
case FileFormat.X8B8G8R8: {
pixelData = ((uint)B << 16) |
((uint)G << 8) |
((uint)R << 0);
break;
}
case FileFormat.A1R5G5B5: {
pixelData = ((uint)(A != 0 ? 1 : 0) << 15) |
((uint)(R >> 3) << 10) |
((uint)(G >> 3) << 5) |
((uint)(B >> 3) << 0);
break;
}
case FileFormat.A4R4G4B4: {
pixelData = ((uint)(A >> 4) << 12) |
((uint)(R >> 4) << 8) |
((uint)(G >> 4) << 4) |
((uint)(B >> 4) << 0);
break;
}
case FileFormat.R8G8B8: {
pixelData = ((uint)R << 16) |
((uint)G << 8) |
((uint)B << 0);
break;
}
case FileFormat.R5G6B5: {
pixelData = ((uint)(R >> 3) << 11) |
((uint)(G >> 2) << 5) |
((uint)(B >> 3) << 0);
break;
}
case FileFormat.G8: {
pixelData = (uint)((R + G + B) / 3.0 + 0.5);
break;
}
}
int pixelOffset = i / 4 * pixelWidth;
for (int j = 0; j < pixelWidth; j++)
{
outputData[pixelOffset + j] = (byte)((pixelData >> (8 * j)) & 0xff);
}
}
}
return(outputData);
}
public byte[] WriteMipMap(DdsMipMap mipMap , DdsSaveConfig saveConfig) {
byte[] outputData;
if (saveConfig.FileFormat >= FileFormat.DXT1 && saveConfig.FileFormat <= FileFormat.DXT5) {
outputData = DdsSquish.CompressImage(mipMap.MipMap, mipMap.Width, mipMap.Height, saveConfig.GetSquishFlags(), null);
}
else {
int pixelWidth = (int)header.PitchOrLinearSize / Width;
int mipPitch = pixelWidth * mipMap.Width;
outputData = new byte[mipPitch * mipMap.Height];
outputData.Initialize();
for(int i = 0; i < mipMap.MipMap.Length; i += 4) {
uint pixelData = 0;
byte R = mipMap.MipMap[i + 0];
byte G = mipMap.MipMap[i + 1];
byte B = mipMap.MipMap[i + 2];
byte A = mipMap.MipMap[i + 3];
switch(saveConfig.FileFormat) {
case FileFormat.A8R8G8B8: {
pixelData = ((uint)A << 24) |
((uint)R << 16) |
((uint)G << 8) |
((uint)B << 0);
break;
}
case FileFormat.X8R8G8B8: {
pixelData = ((uint)R << 16) |
((uint)G << 8) |
((uint)B << 0);
break;
}
case FileFormat.A8B8G8R8: {
pixelData = ((uint)A << 24) |
((uint)B << 16) |
((uint)G << 8) |
((uint)R << 0);
break;
}
case FileFormat.X8B8G8R8: {
pixelData = ((uint)B << 16) |
((uint)G << 8) |
((uint)R << 0);
break;
}
case FileFormat.A1R5G5B5: {
pixelData = ((uint)(A != 0 ? 1 : 0) << 15) |
((uint)(R >> 3) << 10) |
((uint)(G >> 3) << 5) |
((uint)(B >> 3) << 0);
break;
}
case FileFormat.A4R4G4B4: {
pixelData = ((uint)(A >> 4) << 12) |
((uint)(R >> 4) << 8) |
((uint)(G >> 4) << 4) |
((uint)(B >> 4) << 0);
break;
}
case FileFormat.R8G8B8: {
pixelData = ((uint)R << 16) |
((uint)G << 8) |
((uint)B << 0);
break;
}
case FileFormat.R5G6B5: {
pixelData = ((uint)(R >> 3) << 11) |
((uint)(G >> 2) << 5) |
((uint)(B >> 3) << 0);
break;
}
case FileFormat.G8: {
pixelData = (uint)((R + G + B) / 3.0 + 0.5);
break;
}
}
int pixelOffset = i / 4 * pixelWidth;
for(int j = 0; j < pixelWidth; j++) outputData[pixelOffset + j] = (byte)((pixelData >> (8 * j)) & 0xff);
}
}
return outputData;
}
