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corrected overlayed IAR images handling.

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This commit is contained in:
morkt 2015-10-30 04:52:56 +04:00
parent b9378e2d2b
commit 7800b6fd3d
1 changed files with 10 additions and 5 deletions
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15
ArcFormats/Sas5/ArcIAR.cs
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@ -177,17 +177,22 @@ namespace GameRes.Formats.Sas5
var overlay_info = overlay.Info;
var base_image = new IarImage (iarc, dir[base_index]);
int base_y = (int)base_image.Info.Height - (int)overlay_info.Height;
byte[] output = base_image.Data;
if (base_y != 0 || overlay_info.Stride != base_image.Info.Stride)
if (overlay_info.Height != base_image.Info.Height || overlay_info.Stride != base_image.Info.Stride)
{
int src_y = 0;
int dst_pos = 0;
if (base_image.Info.Height > overlay_info.Height)
src_y = (int)(base_image.Info.Height - overlay_info.Height);
else if (base_image.Info.Height < overlay_info.Height)
dst_pos = (int)(overlay_info.Height - base_image.Info.Height) * overlay_info.Stride;
byte[] src = base_image.Data;
int base_stride = Math.Min (overlay_info.Stride, base_image.Info.Stride);
output = new byte[overlay_info.Height * overlay_info.Stride];
for (int y = base_y; y < base_image.Info.Height; ++y)
for (int y = src_y; y < base_image.Info.Height; ++y)
{
Buffer.BlockCopy (src, y * base_image.Info.Stride,
output, (y - base_y) * overlay_info.Stride, base_stride);
Buffer.BlockCopy (src, y * base_image.Info.Stride, output, dst_pos, base_stride);
dst_pos += overlay_info.Stride;
}
}
int pixel_size = overlay_info.BPP / 8;