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(IPT): support transparent 'cut' images.

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This commit is contained in:
morkt 2019-02-25 13:06:27 +04:00
parent 5fd5a9a44c
commit 1c26c0a856
1 changed files with 9 additions and 3 deletions
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12
Experimental/Artemis/ImageIPT.cs
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@ -93,10 +93,15 @@ namespace GameRes.Formats.Artemis
public override ImageData Read (IBinaryStream file, ImageMetaData info)
{
var meta = (IptMetaData)info;
if (meta.Mode != "diff" && meta.Mode != "cut")
PixelFormat format;
if ("cut" == meta.Mode)
format = PixelFormats.Bgra32;
else if ("diff" == meta.Mode)
format = PixelFormats.Bgr32;
else
throw new InvalidFormatException (string.Format ("Not supported IPT tile mode '{0}'.", meta.Mode));
var canvas = new WriteableBitmap (meta.iWidth, meta.iHeight, ImageData.DefaultDpiX,
ImageData.DefaultDpiY, PixelFormats.Bgr32, null);
ImageData.DefaultDpiY, format, null);
var base_dir = VFS.GetDirectoryName (file.Name);
try
{
@ -167,7 +172,7 @@ namespace GameRes.Formats.Artemis
byte src_alpha = pixels[src+3];
if (src_alpha > 0)
{
if (0xFF == src_alpha)
if (0xFF == src_alpha || 0 == buffer[dst+3])
{
buffer[dst ] = pixels[src];
buffer[dst+1] = pixels[src+1];
@ -179,6 +184,7 @@ namespace GameRes.Formats.Artemis
buffer[dst+1] = (byte)((pixels[src+1] * src_alpha + buffer[dst+1] * (0xFF - src_alpha)) / 0xFF);
buffer[dst+2] = (byte)((pixels[src+2] * src_alpha + buffer[dst+2] * (0xFF - src_alpha)) / 0xFF);
}
buffer[dst+3] = src_alpha;
}
dst += 4;
src += 4;