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(DDS): DXT5 compression.

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This commit is contained in:
morkt
2017-04-14 08:28:12 +04:00
parent 3cd7ff697d
commit a42b34fbec
3 changed files with 172 additions and 9 deletions
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30
ArcFormats/DirectDraw/ImageDDS.cs
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@@ -30,7 +30,7 @@ using System.Text;
using System.Windows.Media;
using GameRes.Utility;
namespace GameRes.Formats.Microsoft
namespace GameRes.Formats.DirectDraw
{
internal class DdsMetaData : ImageMetaData
{
@@ -91,17 +91,29 @@ namespace GameRes.Formats.Microsoft
var meta = (DdsMetaData)info;
if (meta.PixelFlags.HasFlag (DdsPF.Yuv | DdsPF.Luminance))
throw new NotSupportedException ("Not supported DDS texture color format");
if (!string.IsNullOrEmpty (meta.FourCC))
throw new NotImplementedException ("Compressed DDS textures not implemented");
if (meta.PixelFlags.HasFlag (DdsPF.Rgb)
&& (0 == meta.RBitMask || 0 == meta.GBitMask || 0 == meta.BBitMask))
throw new InvalidFormatException();
var pixels = ReadPixelData (stream.AsStream, meta);
byte[] pixels;
PixelFormat format;
if (meta.PixelFlags.HasFlag (DdsPF.AlphaPixels) && meta.ABitMask != 0)
if (string.IsNullOrEmpty (meta.FourCC))
{
if (meta.PixelFlags.HasFlag (DdsPF.Rgb)
&& (0 == meta.RBitMask || 0 == meta.GBitMask || 0 == meta.BBitMask))
throw new InvalidFormatException();
pixels = ReadPixelData (stream.AsStream, meta);
if (meta.PixelFlags.HasFlag (DdsPF.AlphaPixels) && meta.ABitMask != 0)
format = PixelFormats.Bgra32;
else
format = PixelFormats.Bgr32;
}
else if ("DXT5" == meta.FourCC)
{
stream.Position = meta.DataOffset;
var input = stream.ReadBytes ((int)meta.Width * (int)meta.Height);
var dxt = new DxtDecoder (input, meta);
pixels = dxt.UnpackDXT5();
format = PixelFormats.Bgra32;
}
else
format = PixelFormats.Bgr32;
throw new NotImplementedException ("Compressed DDS textures not implemented");
return ImageData.Create (info, format, null, pixels);
}