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trying to restore transparency handling fix.

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probably missed some bitflag in a header that's responsible for this
behavior.
This commit is contained in:
morkt 2016-10-14 01:51:46 +04:00
parent 44deae320c
commit 8c6b44bb3f
2 changed files with 36 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
ArcFormats/Circus/ImageCRX.cs
View File

@ -152,7 +152,7 @@ namespace GameRes.Formats.Circus
Palette = new BitmapPalette (palette);
}
public void Unpack ()
public void Unpack (bool is_diff = false)
{
if (m_compression >= 3)
{
@ -184,8 +184,7 @@ namespace GameRes.Formats.Circus
int g = m_output[pixel+2];
int r = m_output[pixel+3];
/*
if (alpha != alpha_flip)
if (!is_diff && alpha != alpha_flip)
{
b += (w & 1) + shift;
if (b < 0)
@ -205,7 +204,7 @@ namespace GameRes.Formats.Circus
else if (r > 0xff)
r = 0xff;
}
*/
m_output[pixel] = (byte)b;
m_output[pixel+1] = (byte)g;
m_output[pixel+2] = (byte)r;

68
ArcFormats/Circus/ImageCRXD.cs
View File

@ -136,46 +136,44 @@ namespace GameRes.Formats.Circus
if (null == base_info || base_info.BPP != info.BPP)
throw new InvalidFormatException ("Invalid base image");
using (var reader = new Reader (base_file, base_info))
using (var crx = OpenDiffStream (stream, meta))
using (var diff_reader = new Reader (crx, meta.DiffInfo))
{
reader.Unpack();
using (var crx = OpenDiffStream (stream, meta))
using (var diff_reader = new Reader (crx, meta.DiffInfo))
reader.Unpack (true);
diff_reader.Unpack (true);
var diff_rect = new Rectangle (meta.OffsetX, meta.OffsetY, (int)meta.Width, (int)meta.Height);
var base_rect = new Rectangle (base_info.OffsetX, base_info.OffsetY,
(int)base_info.Width, (int)base_info.Height);
diff_rect = Rectangle.Intersect (diff_rect, base_rect);
if (diff_rect.IsEmpty)
throw new InvalidFormatException ("Empty diff region");
int pixel_size = base_info.BPP / 8;
int x = diff_rect.X - base_rect.X;
int y = diff_rect.Y - base_rect.Y;
int dst = y * reader.Stride + pixel_size * x;
var image = reader.Data;
int dx = diff_rect.X - meta.OffsetX;
int dy = diff_rect.Y - meta.OffsetY;
int src = dy * diff_reader.Stride + pixel_size * dx;
var diff = diff_reader.Data;
int blend_stride = diff_rect.Width * pixel_size;
for (int row = 0; row < diff_rect.Height; ++row)
{
diff_reader.Unpack();
var diff_rect = new Rectangle (meta.OffsetX, meta.OffsetY, (int)meta.Width, (int)meta.Height);
var base_rect = new Rectangle (base_info.OffsetX, base_info.OffsetY,
(int)base_info.Width, (int)base_info.Height);
diff_rect = Rectangle.Intersect (diff_rect, base_rect);
if (diff_rect.IsEmpty)
throw new InvalidFormatException ("Empty diff region");
int pixel_size = base_info.BPP / 8;
int x = diff_rect.X - base_rect.X;
int y = diff_rect.Y - base_rect.Y;
int dst = y * reader.Stride + pixel_size * x;
var image = reader.Data;
int dx = diff_rect.X - meta.OffsetX;
int dy = diff_rect.Y - meta.OffsetY;
int src = dy * diff_reader.Stride + pixel_size * dx;
var diff = diff_reader.Data;
int blend_stride = diff_rect.Width * pixel_size;
for (int row = 0; row < diff_rect.Height; ++row)
for (int i = 0; i < blend_stride; i += pixel_size)
{
for (int i = 0; i < blend_stride; i += pixel_size)
{
image[dst+i ] += diff[src+i];
image[dst+i+1] += diff[src+i+1];
image[dst+i+2] += diff[src+i+2];
if (4 == pixel_size)
image[dst+i+3] -= diff[src+i+3];
}
dst += reader.Stride;
src += diff_reader.Stride;
image[dst+i ] += diff[src+i];
image[dst+i+1] += diff[src+i+1];
image[dst+i+2] += diff[src+i+2];
if (4 == pixel_size)
image[dst+i+3] -= diff[src+i+3];
}
return ImageData.Create (base_info, reader.Format, reader.Palette, image, reader.Stride);
dst += reader.Stride;
src += diff_reader.Stride;
}
return ImageData.Create (base_info, reader.Format, reader.Palette, image, reader.Stride);
}
}
}