public static void ConvertToPVRTC(TextureContent sourceContent, int mipLevels, bool premultipliedAlpha, MGCompressionMode bpp)
{
IntPtr dataSizesPtr = IntPtr.Zero;
var texDataPtr = ManagedPVRTC.ManagedPVRTC.CompressTexture(sourceContent.Faces[0][0].GetPixelData(),
sourceContent.Faces[0][0].Height,
sourceContent.Faces[0][0].Width,
mipLevels,
premultipliedAlpha,
bpp == MGCompressionMode.PVRTCFourBitsPerPixel,
ref dataSizesPtr);
// Store the size of each mipLevel
var dataSizesArray = new int[mipLevels];
Marshal.Copy(dataSizesPtr, dataSizesArray, 0, dataSizesArray.Length);
var levelSize = 0;
byte[] levelData;
var sourceWidth = sourceContent.Faces[0][0].Width;
var sourceHeight = sourceContent.Faces[0][0].Height;
// Set the pixel data for each mip level.
sourceContent.Faces[0].Clear();
for (int x = 0; x < mipLevels; x++)
{
levelSize = dataSizesArray[x];
levelData = new byte[levelSize];
Marshal.Copy(texDataPtr, levelData, 0, levelSize);
var levelWidth = Math.Max(sourceWidth >> x, 1);
var levelHeight = Math.Max(sourceHeight >> x, 1);
sourceContent.Faces[0].Add(new MGBitmapContent(levelData, levelWidth, levelHeight, bpp));
texDataPtr = IntPtr.Add(texDataPtr, levelSize);
}
}
public MGBitmapContent(byte[] pData, int width, int height, MGCompressionMode bpp) :
base(width, height)
{
_pixelData = pData;
_bpp = bpp;
}
public static void ConvertToPVRTC(TextureContent sourceContent, int mipLevels, bool premultipliedAlpha, MGCompressionMode bpp)
{
IntPtr dataSizesPtr = IntPtr.Zero;
var texDataPtr = CompressTexture(sourceContent.Faces[0][0].GetPixelData(),
sourceContent.Faces[0][0].Height,
sourceContent.Faces[0][0].Width,
mipLevels,
premultipliedAlpha,
bpp == MGCompressionMode.PVRTCFourBitsPerPixel,
ref dataSizesPtr);
// Store the size of each mipLevel
var dataSizesArray = new int[mipLevels];
Marshal.Copy(dataSizesPtr, dataSizesArray, 0, dataSizesArray.Length);
var levelSize = 0;
byte[] levelData;
var sourceWidth = sourceContent.Faces[0][0].Width;
var sourceHeight = sourceContent.Faces[0][0].Height;
// Set the pixel data for each mip level.
sourceContent.Faces[0].Clear();
for (int x = 0; x < mipLevels; x++)
{
levelSize = dataSizesArray[x];
levelData = new byte[levelSize];
Marshal.Copy(texDataPtr, levelData, 0, levelSize);
var levelWidth = Math.Max(sourceWidth >> x, 1);
var levelHeight = Math.Max(sourceHeight >> x, 1);
sourceContent.Faces[0].Add(new MGBitmapContent(levelData, levelWidth, levelHeight, bpp));
texDataPtr = IntPtr.Add(texDataPtr, levelSize);
}
}
public MGBitmapContent(byte[] pData, int width, int height, MGCompressionMode bpp) :
base(width, height)
{
_pixelData = pData;
_bpp = bpp;
}
