public static int CalculateMipLevels(int width, int height, int depth, MipMapCount mipLevels)
{
if (mipLevels > 1)
{
if (!IsPow2(width) || !IsPow2(height) || !IsPow2(depth))
{
throw new InvalidOperationException("Width/Height/Depth must be power of 2");
}
var maxMips = CountMips(width, height, depth);
if (mipLevels > maxMips)
{
throw new InvalidOperationException($"MipLevels must be <= {maxMips}");
}
}
else if (mipLevels == 0)
{
if (!IsPow2(width) || !IsPow2(height) || !IsPow2(depth))
{
throw new InvalidOperationException("Width/Height/Depth must be power of 2");
}
mipLevels = CountMips(width, height, depth);
}
else
{
mipLevels = 1;
}
return(mipLevels);
}
public static int CalculateMipLevels(int width, int height, MipMapCount mipLevels)
{
if (mipLevels > 1)
{
var maxMips = CountMips(width, height);
if (mipLevels > maxMips)
{
throw new InvalidOperationException($"MipLevels must be <= {maxMips}");
}
}
else if (mipLevels == 0)
{
mipLevels = CountMips(width, height);
}
else
{
mipLevels = 1;
}
return(mipLevels);
}
private static ImageDescription CreateDescription(TextureDimension dimension, int width, int height, int depth, MipMapCount mipMapCount, PixelFormat format, int arraySize)
{
return(new ImageDescription
{
Width = width,
Height = height,
Depth = depth,
ArraySize = arraySize,
Dimension = dimension,
Format = format,
MipLevels = mipMapCount
});
}
public static Image New3D(int width, int height, int depth, MipMapCount mipMapCount, PixelFormat format, IntPtr dataPointer)
{
return(new Image(CreateDescription(TextureDimension.Texture3D, width, width, depth, mipMapCount, format, 1), dataPointer, 0, null, false));
}
public static Image NewCube(int width, MipMapCount mipMapCount, PixelFormat format, IntPtr dataPointer)
{
return(new Image(CreateDescription(TextureDimension.TextureCube, width, width, 1, mipMapCount, format, 6), dataPointer, 0, null, false));
}
public static Image New2D(int width, int height, MipMapCount mipMapCount, PixelFormat format, int arraySize, IntPtr dataPointer)
{
return(new Image(CreateDescription(TextureDimension.Texture2D, width, height, 1, mipMapCount, format, arraySize), dataPointer, 0, null, false));
}
public static Image New3D(int width, int height, int depth, MipMapCount mipMapCount, PixelFormat format)
{
return(New3D(width, height, depth, mipMapCount, format, IntPtr.Zero));
}
public static Image NewCube(int width, MipMapCount mipMapCount, PixelFormat format)
{
return(NewCube(width, mipMapCount, format, IntPtr.Zero));
}
public static Image New2D(int width, int height, MipMapCount mipMapCount, PixelFormat format, int arraySize = 1)
{
return(New2D(width, height, mipMapCount, format, arraySize, IntPtr.Zero));
}
