public static void CompressDxt1(byte *rgb, int top, int left, int bottom, int right, int stride, byte *blocks, int option)
{
if (useSse2)
{
option |= 2;
}
ZunTzuLib.CompressDxt1(rgb, top, left, bottom, right, stride, blocks, option);
}
private static unsafe int loadNextTexture(IntPtr imageLoader, Texture texture, out uint mipmapLevel, out uint x, out uint y)
{
byte *textureBits = (byte *)texture.LockRectangle(0, LockFlags.None).InternalData.ToPointer();
return(ZunTzuLib.LoadNextTile(imageLoader, (IntPtr)textureBits, out mipmapLevel, out x, out y));
}
/// <summary>Must be called in a loop for the tile set to be fully loaded.</summary>
/// <returns>Progress between 0 and 1.</returns>
public IEnumerable <float> LoadIncrementally()
{
if (imageFile.Archive == null ||
(!imageFile.FileName.EndsWith(".jpg", StringComparison.OrdinalIgnoreCase) && !imageFile.FileName.EndsWith(".png", StringComparison.OrdinalIgnoreCase)) ||
(maskFile != null && !maskFile.FileName.EndsWith(".jpg", StringComparison.OrdinalIgnoreCase) && !maskFile.FileName.EndsWith(".png", StringComparison.OrdinalIgnoreCase)))
{
goto fallBack;
}
// optimized native code simd-ed multithreaded pipeline
{
int error;
uint skippedMipMapLevels = (uint)Math.Max(0, (int)graphics.Properties.MapsAndCountersDetailLevel - (int)detailLevel);
IntPtr imageLoader = ZunTzuLib.CreateImageLoader(imageFile.Archive.FileName, imageFile.FileName, (maskFile != null ? maskFile.FileName : ""), skippedMipMapLevels, 1);
try {
uint width;
uint height;
if (0 != (error = ZunTzuLib.GetImageDimensions(imageLoader, out width, out height)))
{
//throw new ApplicationException(string.Format("Error while loading image: code {0}", error));
goto fallBack;
}
size = new SizeF((float)width, (float)height);
for (int i = (int)detailLevel; i > 0; --i)
{
size = new SizeF(size.Width * 2, size.Height * 2);
}
int mipMapLevelCount =
Math.Max(
3, // at least 3 mip-maps
Math.Max(
(int)Math.Ceiling(Math.Log(width / 254, 2) + 1),
(int)Math.Ceiling(Math.Log(height / 254, 2) + 1)));
tiles = new DXTile[mipMapLevelCount + (int)detailLevel][, ];
uint tileCount = 0;
for (int mipMapLevel = (int)detailLevel; mipMapLevel < mipMapLevelCount + (int)detailLevel; ++mipMapLevel)
{
if (mipMapLevel >= (int)graphics.Properties.MapsAndCountersDetailLevel)
{
uint columnCount = (width + 253) / 254;
uint rowCount = (height + 253) / 254;
tiles[mipMapLevel] = new DXTile[columnCount, rowCount];
tileCount += columnCount * rowCount;
}
width = (width + 1) / 2;
height = (height + 1) / 2;
}
uint mipmapLevel; // regardless of detailLevel (i.e. first mipmap is always zero)
uint x;
uint y;
for (uint i = 0; i < tileCount; ++i)
{
Texture texture = new Texture(graphics.Device, 256, 256, 1, 0, (maskFile == null ? Format.Dxt1 : Format.Dxt5), Pool.Managed);
if (0 != (error = loadNextTexture(imageLoader, texture, out mipmapLevel, out x, out y)))
{
texture.UnlockRectangle(0);
//throw new ApplicationException(string.Format("Error while loading image: code {0}", error));
goto fallBack;
}
texture.UnlockRectangle(0);
DXTile tile = new DXTile(this);
tiles[mipmapLevel + (int)detailLevel][x, y] = tile;
tile.Initialize(maskFile == null ? Format.Dxt1 : Format.Dxt5, texture);
yield return((float)(i + 1) / (float)tileCount);
}
} finally {
ZunTzuLib.FreeImageLoader(imageLoader);
}
yield break;
}
fallBack:
{
BitmapResource image = null;
try {
if (maskFile != null)
{
image = new BitmapResource(imageFile, PixelFormat.Format32bppArgb);
BitmapResource mask = null;
try {
mask = new BitmapResource(maskFile, PixelFormat.Format24bppRgb);
applyMask(image, mask);
} finally {
if (mask != null)
{
mask.Dispose();
}
}
}
else
{
image = new BitmapResource(imageFile, PixelFormat.Format24bppRgb);
}
// TODO: find the correct progress for loading the bitmaps
yield return(0.0f);
size = new SizeF((float)image.BitmapData.Width, (float)image.BitmapData.Height);
for (int i = (int)detailLevel; i > 0; --i)
{
size = new SizeF(size.Width * 2, size.Height * 2);
}
foreach (float progress in createMipMappedTilesIncrements(image))
{
yield return(progress);
}
} finally {
if (image != null)
{
image.Dispose();
}
}
}
}
