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limit alpha channel values to 0xff

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This commit is contained in:
morkt 2015-03-11 16:36:13 +04:00
parent bbc286b0fd
commit 520e7215ba
1 changed files with 3 additions and 2 deletions
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5
ArcFormats/ImageBIP.cs
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@ -83,6 +83,8 @@ namespace GameRes.Formats.PS2
input.ReadInt32(); input.ReadInt32();
uint w = input.ReadUInt16(); uint w = input.ReadUInt16();
uint h = input.ReadUInt16(); uint h = input.ReadUInt16();
if (0 == w || 0 == h)
return null;
var meta = new BipMetaData { Width = w, Height = h, BPP = 32 }; var meta = new BipMetaData { Width = w, Height = h, BPP = 32 };
for (int i = 0; i < tile_count; ++i) for (int i = 0; i < tile_count; ++i)
{ {
@ -100,8 +102,6 @@ namespace GameRes.Formats.PS2
tile.Offset = input.ReadUInt32() + data_offset; tile.Offset = input.ReadUInt32() + data_offset;
meta.Tiles.Add (tile); meta.Tiles.Add (tile);
} }
if (0 == meta.Width || 0 == meta.Height || 0 == meta.Tiles.Count)
return null;
return meta; return meta;
} }
} }
@ -146,6 +146,7 @@ namespace GameRes.Formats.PS2
pixels[p] = pixels[p+2]; pixels[p] = pixels[p+2];
pixels[p+2] = r; pixels[p+2] = r;
int a = 0 == alpha ? 0xff : pixels[p+3] * 0xff / 0x80; int a = 0 == alpha ? 0xff : pixels[p+3] * 0xff / 0x80;
if (a > 0xff) a = 0xff;
pixels[p+3] = (byte)a; pixels[p+3] = (byte)a;
} }
var rect = new Int32Rect (tile.Left+x, tile.Top+y, converted.PixelWidth, converted.PixelHeight); var rect = new Int32Rect (tile.Left+x, tile.Top+y, converted.PixelWidth, converted.PixelHeight);